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rebase: update kubernetes and libraries to v1.22.0 version

Browse Source 
Kubernetes v1.22 version has been released and this update
ceph csi dependencies to use the same version.

Signed-off-by: Humble Chirammal <hchiramm@redhat.com>
This commit is contained in:
Humble Chirammal
2021-08-09 12:49:24 +05:30
committed by mergify[bot]
parent e077c1fdf5
commit aa698bc3e1
759 changed files with 61864 additions and 6514 deletions
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.DS_Store
Thumbs.db
.tools/
.idea/
.vscode/
*.iml
*.so
coverage.*
example
instrumentation/google.golang.org/grpc/otelgrpc/example/server/server
instrumentation/google.golang.org/grpc/otelgrpc/example/client/client

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# See https://github.com/golangci/golangci-lint#config-file
run:
issues-exit-code: 1 #Default
tests: true #Default
linters:
enable:
- misspell
- goimports
- golint
- gofmt
issues:
exclude-rules:
# helpers in tests often (rightfully) pass a *testing.T as their first argument
- path: _test\.go
text: "context.Context should be the first parameter of a function"
linters:
- golint
# Yes, they are, but it's okay in a test
- path: _test\.go
text: "exported func.*returns unexported type.*which can be annoying to use"
linters:
- golint
linters-settings:
misspell:
locale: US
#ignore-words:
# - someword
goimports:
local-prefixes: go.opentelemetry.io

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# Changelog
All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
## [Unreleased]
## [0.20.0] - 2021-04-23
### Changed
- The `go.opentelemetry.io/contrib/instrumentation/go.mongodb.org/mongo-driver/mongo/otelmongo` instrumentation now accepts a `WithCommandAttributeDisabled`,
so the caller can specify whether to opt-out of tracing the mongo command. (#712)
- Upgrade to v0.20.0 of `go.opentelemetry.io/otel`. (#758)
- The B3 and Jaeger propagators now store their debug or deferred state in the context.Context instead of the SpanContext. (#758)
## [0.19.0] - 2021-03-19
### Changed
- Upgrade to v0.19.0 of `go.opentelemetry.io/otel`.
## [0.18.0] - 2021-03-04
### Fixed
- `otelmemcache` no longer sets span status to OK instead of leaving it unset. (#477)
- Fix goroutine leak in gRPC `StreamClientInterceptor`. (#581)
### Removed
- Remove service name from `otelmemcache` configuration and span attributes. (#477)
## [0.17.0] - 2021-02-15
### Added
- Add `ot-tracer` propagator (#562)
### Changed
- Rename project default branch from `master` to `main`.
### Fixed
- Added failure message for AWS ECS resource detector for better debugging (#568)
- Goroutine leak in gRPC StreamClientInterceptor while streamer returns an error. (#581)
## [0.16.0] - 2021-01-13
### Fixed
- Fix module path for AWS ECS resource detector (#517)
## [0.15.1] - 2020-12-14
### Added
- Add registry link check to `Makefile` and pre-release script. (#446)
- A new AWS X-Ray ID Generator (#459)
- Migrate CircleCI jobs to GitHub Actions (#476)
- Add CodeQL GitHub Action (#506)
- Add gosec workflow to GitHub Actions (#507)
### Fixed
- Fixes the body replacement in otelhttp to not to mutate a nil body. (#484)
## [0.15.0] - 2020-12-11
### Added
- A new Amazon EKS resource detector. (#465)
- A new `gcp.CloudRun` detector for detecting resource from a Cloud Run instance. (#455)
## [0.14.0] - 2020-11-20
### Added
- `otelhttp.{Get,Head,Post,PostForm}` convenience wrappers for their `http` counterparts. (#390)
- The AWS detector now adds the cloud zone, host image ID, host type, and host name to the returned `Resource`. (#410)
- Add Amazon ECS Resource Detector for AWS X-Ray. (#466)
- Add propagator for AWS X-Ray (#462)
### Changed
- Add semantic version to `Tracer` / `Meter` created by instrumentation packages `otelsaram`, `otelrestful`, `otelmongo`, `otelhttp` and `otelhttptrace`. (#412)
- Update instrumentation guidelines about tracer / meter semantic version. (#412)
- Replace internal tracer and meter helpers by helpers from `go.opentelemetry.io/otel`. (#414)
- gRPC instrumentation sets span attribute `rpc.grpc.status_code`. (#453)
## Fixed
- `/detectors/aws` no longer fails if instance metadata is not available (e.g. not running in AWS) (#401)
- The AWS detector now returns a partial resource and an appropriate error if it encounters an error part way through determining a `Resource` identity. (#410)
- The `host` instrumentation unit test has been updated to not depend on the system it runs on. (#426)
## [0.13.0] - 2020-10-09
## Added
- A Jaeger propagator. (#375)
## Changed
- The `go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc` package instrumentation no longer accepts a `Tracer` as an argument to the interceptor function.
Instead, a new `WithTracerProvider` option is added to configure the `TracerProvider` used when creating the `Tracer` for the instrumentation. (#373)
- The `go.opentelemetry.io/contrib/instrumentation/gopkg.in/macaron.v1/otelmacaron` instrumentation now accepts a `TracerProvider` rather than a `Tracer`. (#374)
- Remove `go.opentelemetry.io/otel/sdk` dependency from instrumentation. (#381)
- Use `httpsnoop` in `go.opentelemetry.io/contrib/instrumentation/github.com/gorilla/mux/otelmux` to ensure `http.ResponseWriter` additional interfaces are preserved. (#388)
### Fixed
- The `go.opentelemetry.io/contrib/instrumentation/github.com/labstack/echo/otelecho.Middleware` no longer sends duplicate errors to the global `ErrorHandler`. (#377, #364)
- The import comment in `go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp` is now correctly quoted. (#379)
- The B3 propagator sets the sample bitmask when the sampling decision is `debug`. (#369)
## [0.12.0] - 2020-09-25
### Changed
- Replace `WithTracer` with `WithTracerProvider` in the `go.opentelemetry.io/contrib/instrumentation/gopkg.in/macaron.v1/otelmacaron` instrumentation. (#374)
### Added
- Benchmark tests for the gRPC instrumentation. (#296)
- Integration testing for the gRPC instrumentation. (#297)
- Allow custom labels to be added to net/http metrics. (#306)
- Added B3 propagator, moving it out of open.telemetry.io/otel repo. (#344)
### Changed
- Unify instrumentation about provider options for `go.mongodb.org/mongo-driver`, `gin-gonic/gin`, `gorilla/mux`,
`labstack/echo`, `emicklei/go-restful`, `bradfitz/gomemcache`, `Shopify/sarama`, `net/http` and `beego`. (#303)
- Update instrumentation guidelines about uniform provider options. Also, update style guide. (#303)
- Make config struct of instrumentation unexported. (#303)
- Instrumentations have been updated to adhere to the [configuration style guide's](https://github.com/open-telemetry/opentelemetry-go/blob/master/CONTRIBUTING.md#config)
updated recommendation to use `newConfig()` instead of `configure()`. (#336)
- A new instrumentation naming scheme is implemented to avoid package name conflicts for instrumented packages while still remaining discoverable. (#359)
- `google.golang.org/grpc` -> `google.golang.org/grpc/otelgrpc`
- `go.mongodb.org/mongo-driver` -> `go.mongodb.org/mongo-driver/mongo/otelmongo`
- `net/http` -> `net/http/otelhttp`
- `net/http/httptrace` -> `net/http/httptrace/otelhttptrace`
- `github.com/labstack/echo` -> `github.com/labstack/echo/otelecho`
- `github.com/bradfitz/gomemcache` -> `github.com/bradfitz/gomemcache/memcache/otelmemcache`
- `github.com/gin-gonic/gin` -> `github.com/gin-gonic/gin/otelgin`
- `github.com/gocql/gocql` -> `github.com/gocql/gocql/otelgocql`
- `github.com/emicklei/go-restful` -> `github.com/emicklei/go-restful/otelrestful`
- `github.com/Shopify/sarama` -> `github.com/Shopify/sarama/otelsarama`
- `github.com/gorilla/mux` -> `github.com/gorilla/mux/otelmux`
- `github.com/astaxie/beego` -> `github.com/astaxie/beego/otelbeego`
- `gopkg.in/macaron.v1` -> `gopkg.in/macaron.v1/otelmacaron`
- Rename `OTelBeegoHandler` to `Handler` in the `go.opentelemetry.io/contrib/instrumentation/github.com/astaxie/beego/otelbeego` package. (#359)
## [0.11.0] - 2020-08-25
### Added
- Top-level `Version()` and `SemVersion()` functions defining the current version of the contrib package. (#225)
- Instrumentation for the `github.com/astaxie/beego` package. (#200)
- Instrumentation for the `github.com/bradfitz/gomemcache` package. (#204)
- Host metrics instrumentation. (#231)
- Cortex histogram and distribution support. (#237)
- Cortex example project. (#238)
- Cortex HTTP authentication. (#246)
### Changed
- Remove service name as a parameter of Sarama instrumentation. (#221)
- Replace `WithTracer` with `WithTracerProvider` in Sarama instrumentation. (#221)
- Switch to use common top-level module `SemVersion()` when creating versioned tracer in `bradfitz/gomemcache`. (#226)
- Use `IntegrationShouldRun` in `gomemcache_test`. (#254)
- Use Go 1.15 for CI builds. (#236)
- Improved configuration for `runtime` instrumentation. (#224)
### Fixed
- Update dependabot configuration to include newly added `bradfitz/gomemcache` package. (#226)
- Correct `runtime` instrumentation name. (#241)
## [0.10.1] - 2020-08-13
### Added
- The `go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc` module has been added to replace the instrumentation that had previoiusly existed in the `go.opentelemetry.io/otel/instrumentation/grpctrace` package. (#189)
- Instrumentation for the stdlib `net/http` and `net/http/httptrace` packages. (#190)
- Initial Cortex exporter. (#202, #205, #210, #211, #215)
### Fixed
- Bump google.golang.org/grpc from 1.30.0 to 1.31.0. (#166)
- Bump go.mongodb.org/mongo-driver from 1.3.5 to 1.4.0 in /instrumentation/go.mongodb.org/mongo-driver. (#170)
- Bump google.golang.org/grpc in /instrumentation/github.com/gin-gonic/gin. (#173)
- Bump google.golang.org/grpc in /instrumentation/github.com/labstack/echo. (#176)
- Bump google.golang.org/grpc from 1.30.0 to 1.31.0 in /instrumentation/github.com/Shopify/sarama. (#179)
- Bump cloud.google.com/go from 0.61.0 to 0.63.0 in /detectors/gcp. (#181, #199)
- Bump github.com/aws/aws-sdk-go from 1.33.15 to 1.34.1 in /detectors/aws. (#184, #192, #193, #198, #201, #203)
- Bump github.com/golangci/golangci-lint from 1.29.0 to 1.30.0 in /tools. (#186)
- Setup CI to run tests that require external resources (Cassandra and MongoDB). (#191)
- Bump github.com/Shopify/sarama from 1.26.4 to 1.27.0 in /instrumentation/github.com/Shopify/sarama. (#206)
## [0.10.0] - 2020-07-31
This release upgrades its [go.opentelemetry.io/otel](https://github.com/open-telemetry/opentelemetry-go/releases/tag/v0.10.0) dependency to v0.10.0 and includes new instrumentation for popular Kafka and Cassandra clients.
### Added
- A detector that generate resources from GCE instance. (#132)
- A detector that generate resources from AWS instances. (#139)
- Instrumentation for the Kafka client github.com/Shopify/sarama. (#134, #153)
- Links and status message for mock span in the internal testing library. (#134)
- Instrumentation for the Cassandra client github.com/gocql/gocql. (#137)
- A detector that generate resources from GKE clusters. (#154)
### Fixed
- Bump github.com/aws/aws-sdk-go from 1.33.8 to 1.33.15 in /detectors/aws. (#155, #157, #159, #162)
- Bump github.com/golangci/golangci-lint from 1.28.3 to 1.29.0 in /tools. (#146)
## [0.9.0] - 2020-07-20
This release upgrades its [go.opentelemetry.io/otel](https://github.com/open-telemetry/opentelemetry-go/releases/tag/v0.9.0) dependency to v0.9.0.
### Fixed
- Bump github.com/emicklei/go-restful/v3 from 3.0.0 to 3.2.0 in /instrumentation/github.com/emicklei/go-restful. (#133)
- Update dependabot configuration to correctly check all included packages. (#131)
- Update `RELEASING.md` with correct `tag.sh` command. (#130)
## [0.8.0] - 2020-07-10
This release upgrades its [go.opentelemetry.io/otel](https://github.com/open-telemetry/opentelemetry-go/releases/tag/v0.8.0) dependency to v0.8.0, includes minor fixes, and new instrumentation.
### Added
- Create this `CHANGELOG.md`. (#114)
- Add `emicklei/go-restful/v3` trace instrumentation. (#115)
### Changed
- Update `CONTRIBUTING.md` to ask for updates to `CHANGELOG.md` with each pull request. (#114)
- Move all `github.com` package instrumentation under a `github.com` directory. (#118)
### Fixed
- Update README to include information about external instrumentation.
To start, this includes native instrumentation found in the `go-redis/redis` package. (#117)
- Bump github.com/golangci/golangci-lint from 1.27.0 to 1.28.2 in /tools. (#122, #123, #125)
- Bump go.mongodb.org/mongo-driver from 1.3.4 to 1.3.5 in /instrumentation/go.mongodb.org/mongo-driver. (#124)
## [0.7.0] - 2020-06-29
This release upgrades its [go.opentelemetry.io/otel](https://github.com/open-telemetry/opentelemetry-go/releases/tag/v0.7.0) dependency to v0.7.0.
### Added
- Create `RELEASING.md` instructions. (#101)
- Apply transitive dependabot go.mod updates as part of a new automatic Github workflow. (#94)
- New dependabot integration to automate package upgrades. (#61)
- Add automatic tag generation script for release. (#60)
### Changed
- Upgrade Datadog metrics exporter to include Resource tags. (#46)
- Added output validation to Datadog example. (#96)
- Move Macaron package to match layout guidelines. (#92)
- Update top-level README and instrumentation README. (#92)
- Bump google.golang.org/grpc from 1.29.1 to 1.30.0. (#99)
- Bump github.com/golangci/golangci-lint from 1.21.0 to 1.27.0 in /tools. (#77)
- Bump go.mongodb.org/mongo-driver from 1.3.2 to 1.3.4 in /instrumentation/go.mongodb.org/mongo-driver. (#76)
- Bump github.com/stretchr/testify from 1.5.1 to 1.6.1. (#74)
- Bump gopkg.in/macaron.v1 from 1.3.5 to 1.3.9 in /instrumentation/macaron. (#68)
- Bump github.com/gin-gonic/gin from 1.6.2 to 1.6.3 in /instrumentation/gin-gonic/gin. (#73)
- Bump github.com/DataDog/datadog-go from 3.5.0+incompatible to 3.7.2+incompatible in /exporters/metric/datadog. (#78)
- Replaced `internal/trace/http.go` helpers with `api/standard` helpers from otel-go repo. (#112)
## [0.6.1] - 2020-06-08
First official tagged release of `contrib` repository.
### Added
- `labstack/echo` trace instrumentation (#42)
- `mongodb` trace instrumentation (#26)
- Go Runtime metrics (#9)
- `gorilla/mux` trace instrumentation (#19)
- `gin-gonic` trace instrumentation (#15)
- `macaron` trace instrumentation (#20)
- `dogstatsd` metrics exporter (#10)
- `datadog` metrics exporter (#22)
- Tags to all modules in repository
- Repository folder structure and automated build (#3)
### Changes
- Prefix support for dogstatsd (#34)
- Update Go Runtime package to use batch observer (#44)
[Unreleased]: https://github.com/open-telemetry/opentelemetry-go-contrib/compare/v0.20.0...HEAD
[0.20.0]: https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v0.20.0
[0.19.0]: https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v0.19.0
[0.18.0]: https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v0.18.0
[0.17.0]: https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v0.17.0
[0.16.0]: https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v0.16.0
[0.15.1]: https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v0.15.1
[0.15.0]: https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v0.15.0
[0.14.0]: https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v0.14.0
[0.13.0]: https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v0.13.0
[0.12.0]: https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v0.12.0
[0.11.0]: https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v0.11.0
[0.10.1]: https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v0.10.1
[0.10.0]: https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v0.10.0
[0.9.0]: https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v0.9.0
[0.8.0]: https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v0.8.0
[0.7.0]: https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v0.7.0
[0.6.1]: https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v0.6.1

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#####################################################
#
# List of approvers for this repository
#
#####################################################
#
# Learn about membership in OpenTelemetry community:
# https://github.com/open-telemetry/community/blob/main/community-membership.md
#
#
# Learn about CODEOWNERS file format:
# https://help.github.com/en/articles/about-code-owners
#
* @jmacd @MrAlias @Aneurysm9 @evantorrie @XSAM @dashpole @paivagustavo
CODEOWNERS @MrAlias @Aneurysm9

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# Contributing to opentelemetry-go-contrib
The Go special interest group (SIG) meets regularly. See the
OpenTelemetry
[community](https://github.com/open-telemetry/community#golang-sdk)
repo for information on this and other language SIGs.
See the [public meeting
notes](https://docs.google.com/document/d/1A63zSWX0x2CyCK_LoNhmQC4rqhLpYXJzXbEPDUQ2n6w/edit#heading=h.9tngw7jdwd6b)
for a summary description of past meetings. To request edit access,
join the meeting or get in touch on
[Slack](https://cloud-native.slack.com/archives/C01NPAXACKT).
## Development
There are some generated files checked into the repo. To make sure
that the generated files are up-to-date, run `make` (or `make
precommit` - the `precommit` target is the default).
The `precommit` target also fixes the formatting of the code and
checks the status of the go module files.
If after running `make precommit` the output of `git status` contains
`nothing to commit, working tree clean` then it means that everything
is up-to-date and properly formatted.
## Pull Requests
### How to Send Pull Requests
Everyone is welcome to contribute code to `opentelemetry-go-contrib` via
GitHub pull requests (PRs).
To create a new PR, fork the project in GitHub and clone the upstream
repo:
```sh
$ git clone https://github.com/open-telemetry/opentelemetry-go-contrib
```
This would put the project in the `opentelemetry-go-contrib` directory in
current working directory.
Enter the newly created directory and add your fork as a new remote:
```sh
$ git remote add <YOUR_FORK> git@github.com:<YOUR_GITHUB_USERNAME>/opentelemetry-go
```
Check out a new branch, make modifications, run linters and tests, update
`CHANGELOG.md` and push the branch to your fork:
```sh
$ git checkout -b <YOUR_BRANCH_NAME>
# edit files
# update changelog
$ make precommit
$ git add -p
$ git commit
$ git push <YOUR_FORK> <YOUR_BRANCH_NAME>
```
Open a pull request against the main `opentelemetry-go-contrib` repo. Be sure to add the pull
request ID to the entry you added to `CHANGELOG.md`.
### How to Receive Comments
* If the PR is not ready for review, please put `[WIP]` in the title,
tag it as `work-in-progress`, or mark it as
[`draft`](https://github.blog/2019-02-14-introducing-draft-pull-requests/).
* Make sure CLA is signed and CI is clear.
### How to Get PRs Merged
A PR is considered to be **ready to merge** when:
* It has received two approvals from Approvers/Maintainers (at
different companies).
* Feedback has been addressed.
* Any substantive changes to your PR will require that you clear any prior
Approval reviews, this includes changes resulting from other feedback. Unless
the approver explicitly stated that their approval will persist across
changes it should be assumed that the PR needs their review again. Other
project members (e.g. approvers, maintainers) can help with this if there are
any questions or if you forget to clear reviews.
* It has been open for review for at least one working day. This gives
people reasonable time to review.
* Trivial change (typo, cosmetic, doc, etc.) doesn't have to wait for
one day.
* `CHANGELOG.md` has been updated to reflect what has been
added, changed, removed, or fixed.
* Urgent fix can take exception as long as it has been actively
communicated.
Any Maintainer can merge the PR once it is **ready to merge**.
## Style Guide
* Make sure to run `make precommit` - this will find and fix the code
formatting.
* Check [opentelemetry-go Style Guide](https://github.com/open-telemetry/opentelemetry-go/blob/main/CONTRIBUTING.md#style-guide)
## Adding a new Contrib package
To add a new contrib package follow an existing one. An empty Sample instrumentation
provides base structure with an example and a test. Each contrib package
should be its own module. A contrib package may contain more than one go package.
### Folder Structure
- instrumentation/\<instrumentation-package> (**Common**)
- instrumentation/\<instrumentation-package>/trace (**specific to trace**)
- instrumentation/\<instrumentation-package>/metrics (**specific to metrics**)
#### Example
- instrumentation/gorm/trace
- instrumentation/kafka/metrics
## Approvers and Maintainers
Approvers:
- [Evan Torrie](https://github.com/evantorrie), Verizon Media
- [Josh MacDonald](https://github.com/jmacd), LightStep
- [Sam Xie](https://github.com/XSAM)
- [David Ashpole](https://github.com/dashpole), Google
- [Gustavo Silva Paiva](https://github.com/paivagustavo), LightStep
Maintainers:
- [Anthony Mirabella](https://github.com/Aneurysm9), Centene
- [Tyler Yahn](https://github.com/MrAlias), New Relic
### Become an Approver or a Maintainer
See the [community membership document in OpenTelemetry community
repo](https://github.com/open-telemetry/community/blob/main/community-membership.md).

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"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
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not limited to compiled object code, generated documentation,
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"Work" shall mean the work of authorship, whether in Source or
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To apply the Apache License to your work, attach the following
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TOOLS_MOD_DIR := ./tools
# All source code and documents. Used in spell check.
ALL_DOCS := $(shell find . -name '*.md' -type f | sort)
# All directories with go.mod files related to opentelemetry library. Used for building, testing and linting.
ALL_GO_MOD_DIRS := $(filter-out $(TOOLS_MOD_DIR), $(shell find . -type f -name 'go.mod' -exec dirname {} \; | sort))
ALL_COVERAGE_MOD_DIRS := $(shell find . -type f -name 'go.mod' -exec dirname {} \; | egrep -v '^./example|^$(TOOLS_MOD_DIR)' | sort)
# URLs to check if all contrib entries exist in the registry.
REGISTRY_BASE_URL = https://raw.githubusercontent.com/open-telemetry/opentelemetry.io/main/content/en/registry
CONTRIB_REPO_URL = https://github.com/open-telemetry/opentelemetry-go-contrib/tree/main
# Mac OS Catalina 10.5.x doesn't support 386. Hence skip 386 test
SKIP_386_TEST = false
UNAME_S := $(shell uname -s)
ifeq ($(UNAME_S),Darwin)
SW_VERS := $(shell sw_vers -productVersion)
ifeq ($(shell echo $(SW_VERS) | egrep '^(10.1[5-9]|1[1-9]|[2-9])'), $(SW_VERS))
SKIP_386_TEST = true
endif
endif
GOTEST_MIN = go test -v -timeout 30s
GOTEST = $(GOTEST_MIN) -race
GOTEST_WITH_COVERAGE = $(GOTEST) -coverprofile=coverage.out -covermode=atomic -coverpkg=./...
.DEFAULT_GOAL := precommit
.PHONY: precommit
TOOLS_DIR := $(abspath ./.tools)
$(TOOLS_DIR)/golangci-lint: $(TOOLS_MOD_DIR)/go.mod $(TOOLS_MOD_DIR)/go.sum $(TOOLS_MOD_DIR)/tools.go
cd $(TOOLS_MOD_DIR) && \
go build -o $(TOOLS_DIR)/golangci-lint github.com/golangci/golangci-lint/cmd/golangci-lint
$(TOOLS_DIR)/misspell: $(TOOLS_MOD_DIR)/go.mod $(TOOLS_MOD_DIR)/go.sum $(TOOLS_MOD_DIR)/tools.go
cd $(TOOLS_MOD_DIR) && \
go build -o $(TOOLS_DIR)/misspell github.com/client9/misspell/cmd/misspell
$(TOOLS_DIR)/stringer: $(TOOLS_MOD_DIR)/go.mod $(TOOLS_MOD_DIR)/go.sum $(TOOLS_MOD_DIR)/tools.go
cd $(TOOLS_MOD_DIR) && \
go build -o $(TOOLS_DIR)/stringer golang.org/x/tools/cmd/stringer
precommit: dependabot-check license-check generate build lint test
.PHONY: test-with-coverage
test-with-coverage:
set -e; \
printf "" > coverage.txt; \
for dir in $(ALL_COVERAGE_MOD_DIRS); do \
echo "go test ./... + coverage in $${dir}"; \
(cd "$${dir}" && \
$(GOTEST_WITH_COVERAGE) ./... && \
go tool cover -html=coverage.out -o coverage.html); \
[ -f "$${dir}/coverage.out" ] && cat "$${dir}/coverage.out" >> coverage.txt; \
done; \
sed -i.bak -e '2,$$ { /^mode: /d; }' coverage.txt && rm coverage.txt.bak
.PHONY: ci
ci: precommit check-clean-work-tree test-with-coverage test-386
.PHONY: test-gocql
test-gocql:
@if ./tools/should_build.sh gocql; then \
set -e; \
docker run --name cass-integ --rm -p 9042:9042 -d cassandra:3; \
CMD=cassandra IMG_NAME=cass-integ ./tools/wait.sh; \
(cd instrumentation/github.com/gocql/gocql/otelgocql && \
$(GOTEST_WITH_COVERAGE) . && \
go tool cover -html=coverage.out -o coverage.html); \
docker stop cass-integ; \
fi
.PHONY: test-mongo-driver
test-mongo-driver:
@if ./tools/should_build.sh mongo-driver; then \
set -e; \
docker run --name mongo-integ --rm -p 27017:27017 -d mongo; \
CMD=mongo IMG_NAME=mongo-integ ./tools/wait.sh; \
(cd instrumentation/go.mongodb.org/mongo-driver/mongo/otelmongo && \
$(GOTEST_WITH_COVERAGE) . && \
go tool cover -html=coverage.out -o coverage.html); \
docker stop mongo-integ; \
fi
.PHONY: test-gomemcache
test-gomemcache:
@if ./tools/should_build.sh gomemcache; then \
set -e; \
docker run --name gomemcache-integ --rm -p 11211:11211 -d memcached; \
CMD=gomemcache IMG_NAME=gomemcache-integ ./tools/wait.sh; \
(cd instrumentation/github.com/bradfitz/gomemcache/memcache/otelmemcache && \
$(GOTEST_WITH_COVERAGE) . && \
go tool cover -html=coverage.out -o coverage.html); \
docker stop gomemcache-integ ; \
fi
.PHONY: check-clean-work-tree
check-clean-work-tree:
@if ! git diff --quiet; then \
echo; \
echo 'Working tree is not clean, did you forget to run "make precommit"?'; \
echo; \
git status; \
exit 1; \
fi
.PHONY: build
build:
# TODO: Fix this on windows.
set -e; for dir in $(ALL_GO_MOD_DIRS); do \
echo "compiling all packages in $${dir}"; \
(cd "$${dir}" && \
go build ./... && \
go test -run xxxxxMatchNothingxxxxx ./... >/dev/null); \
done
.PHONY: test
test:
set -e; for dir in $(ALL_GO_MOD_DIRS); do \
echo "go test ./... + race in $${dir}"; \
(cd "$${dir}" && \
$(GOTEST) ./...); \
done
.PHONY: test-386
test-386:
if [ $(SKIP_386_TEST) = true ] ; then \
echo "skipping the test for GOARCH 386 as it is not supported on the current OS"; \
else \
set -e; for dir in $(ALL_GO_MOD_DIRS); do \
echo "go test ./... GOARCH 386 in $${dir}"; \
(cd "$${dir}" && \
GOARCH=386 $(GOTEST_MIN) ./...); \
done; \
fi
.PHONY: lint
lint: $(TOOLS_DIR)/golangci-lint $(TOOLS_DIR)/misspell
set -e; for dir in $(ALL_GO_MOD_DIRS); do \
echo "golangci-lint in $${dir}"; \
(cd "$${dir}" && \
$(TOOLS_DIR)/golangci-lint run --fix && \
$(TOOLS_DIR)/golangci-lint run); \
done
$(TOOLS_DIR)/misspell -w $(ALL_DOCS)
set -e; for dir in $(ALL_GO_MOD_DIRS) $(TOOLS_MOD_DIR); do \
echo "go mod tidy in $${dir}"; \
(cd "$${dir}" && \
go mod tidy); \
done
.PHONY: generate
generate: $(TOOLS_DIR)/stringer
PATH="$(TOOLS_DIR):$${PATH}" go generate ./...
.PHONY: license-check
license-check:
@licRes=$$(for f in $$(find . -type f \( -iname '*.go' -o -iname '*.sh' \) ! -path './vendor/*' ! -path './exporters/otlp/internal/opentelemetry-proto/*') ; do \
awk '/Copyright The OpenTelemetry Authors|generated|GENERATED/ && NR<=3 { found=1; next } END { if (!found) print FILENAME }' $$f; \
done); \
if [ -n "$${licRes}" ]; then \
echo "license header checking failed:"; echo "$${licRes}"; \
exit 1; \
fi
.PHONY: registry-links-check
registry-links-check:
@checkRes=$$( \
for f in $$( find ./instrumentation ./exporters ./detectors ! -path './instrumentation/net/*' -type f -name 'go.mod' -exec dirname {} \; | egrep -v '/example|/utils' | sort ) \
./instrumentation/net/http; do \
TYPE="instrumentation"; \
if $$(echo "$$f" | grep -q "exporters"); then \
TYPE="exporter"; \
fi; \
if $$(echo "$$f" | grep -q "detectors"); then \
TYPE="detector"; \
fi; \
NAME=$$(echo "$$f" | sed -e 's/.*\///' -e 's/.*otel//'); \
LINK=$(CONTRIB_REPO_URL)/$$(echo "$$f" | sed -e 's/..//' -e 's/\/otel.*$$//'); \
if ! $$(curl -s $(REGISTRY_BASE_URL)/$${TYPE}-go-$${NAME}.md | grep -q "$${LINK}"); then \
echo "$$f"; \
fi \
done; \
); \
if [ -n "$$checkRes" ]; then \
echo "WARNING: registry link check failed for the following packages:"; echo "$${checkRes}"; \
fi
.PHONY: dependabot-check
dependabot-check:
@result=$$( \
for f in $$( find . -type f -name go.mod -exec dirname {} \; | sed 's/^.\/\?/\//' ); \
do grep -q "$$f" .github/dependabot.yml \
|| echo "$$f"; \
done; \
); \
if [ -n "$$result" ]; then \
echo "missing go.mod dependabot check:"; echo "$$result"; \
exit 1; \
fi

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# OpenTelemetry-Go Contrib
[![build_and_test](https://github.com/open-telemetry/opentelemetry-go-contrib/workflows/build_and_test/badge.svg)](https://github.com/open-telemetry/opentelemetry-go-contrib/actions?query=workflow%3Abuild_and_test+branch%3Amain)
[![Docs](https://godoc.org/go.opentelemetry.io/contrib?status.svg)](https://pkg.go.dev/go.opentelemetry.io/contrib)
[![Go Report Card](https://goreportcard.com/badge/go.opentelemetry.io/contrib)](https://goreportcard.com/report/go.opentelemetry.io/contrib)
[![Slack](https://img.shields.io/badge/slack-@cncf/otel--go-brightgreen.svg?logo=slack)](https://cloud-native.slack.com/archives/C01NPAXACKT)
Collection of 3rd-party instrumentation and exporters for [OpenTelemetry-Go](https://github.com/open-telemetry/opentelemetry-go).
## Contents
- [Instrumentation](./instrumentation/): Packages providing OpenTelemetry instrumentation for 3rd-party libraries.
- [Exporters](./exporters/): Packages providing OpenTelemetry exporters for 3rd-party telemetry systems.
- [Propagators](./propagators/): Packages providing OpenTelemetry context propagators for 3rd-party propagation formats.
- [Detectors](./detectors/): Packages providing OpenTelemetry resource detectors for 3rd-party cloud computing environments.
## Project Status
This project is currently in a pre-GA phase. Our progress towards a GA release
candidate is tracked in [this project
board](https://github.com/orgs/open-telemetry/projects/5).
## Contributing
For information on how to contribute, consult [the contributing guidelines](./CONTRIBUTING.md)

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# Release Process
There are two types of release for the `go.opentelemetry.io/contrib` repo
and submodules.
1. **Case 1** A release due to changes independent of the
`go.opentelemetry.io/otel` module, e.g. perhaps a critical bug fix in
one of the contrib modules.
2. **Case 2** A release due to a breaking API change in
`go.opentelemetry.io/otel` which all modules in this repo
depend on.
## Pre-Release
Update go.mod for submodules to depend on the upcoming new release of
the module in this repo, `go.opentelemetry.io/contrib`. Decide on the
next version of the semantic tag to apply to the contrib
module based on whether you fall into Case 1 or Case 2.
### Case 1
If the changes are all internal to this repo, then the new tag will
most often be a patch or minor version upgrade to the existing tag on
this module. Let's call this `<new_contrib_tag>`.
### Case 2
If a new release is required due to breaking changes in
`go.opentelemetry.io/otel`, then the new semantic tag for this repo
should be bumped to match the `go.opentelemetry.io/otel` new tag.
Let's call this `<new_otel_tag>`. The script checks that
`go.opentelemetry.io/otel@v<new_otel_tag>` is a valid tag, so you need
to wait until that tag has been pushed in the main repo.
In nearly all cases, `<new_contrib_tag>` should be the same as
`<new_otel_tag>`.
1. Run `pre_release.sh` script to create a branch `pre_release_<new_contrib_tag>`.
The script will also run `go mod tidy` and `make ci`.
* **Case 1** `./pre_release.sh -t <new_contrib_tag>`
* **Case 2** `./pre_release.sh -o <new_otel_tag> [-t <new_contrib_tag>]`
2. If you used `-o <new_otel_tag>` to rewrite the modules to depend on
a new version of `go.opentelemetry.io/otel`, there will likely be
breaking changes that require fixes to the files in this
`contrib` repo. Make the appropriate fixes to address any API
breaks and run through the
```
git commit -m "fixes due to API changes"
make precommit
```
cycle until everything passes
4. Push the changes to upstream.
```
git diff main
git push
```
5. Create a PR on github and merge the PR once approved.
### Tag
Now create a `<new_contrib_tag>` on the commit hash of the changes made in pre-release step,
1. Run the tag.sh script.
```
./tag.sh <new_contrib_tag> <commit-hash>
```
2. Push tags upstream. Make sure you push upstream for all the sub-module tags as well.
```
git push upstream <new_contrib_tag>
git push upstream <submodules-path/new_contrib_tag>
...
```
## Release
Now create a release for the new `<new_contrib_tag>` on github.
The release body should include all the release notes in the Changelog for this release.
Additionally, the `tag.sh` script generates commit logs since last release which can be used to suppliment the release notes.
<!-- ## Verify Examples -->
<!-- After releasing run following script to verify that examples build outside of the otel repo. -->
<!-- The script copies examples into a different directory and builds them. -->
<!-- ``` -->
<!-- ./verify_examples.sh -->
<!-- ``` -->

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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package contrib contains common values used across all
// instrumentation, exporter, and detector contributions.
package contrib // import "go.opentelemetry.io/contrib"
// Version is the current release version of OpenTelemetry Contrib in use.
func Version() string {
return "0.20.0"
// This string is updated by the pre_release.sh script during release
}
// SemVersion is the semantic version to be supplied to tracer/meter creation.
func SemVersion() string {
return "semver:" + Version()
}

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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// This package provides all of its functionality through its
// submodules. The submodules in the exporters directory provide
// implementations for trace and metric exporters for third-party
// collectors, and submodules in the instrumentation directory provide the
// instrumentation for the popular go libraries.
package contrib

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module go.opentelemetry.io/contrib
go 1.14

0
vendor/go.opentelemetry.io/contrib/go.sum generated vendored Normal file
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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
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61
vendor/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/client.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package otelhttp
import (
"context"
"io"
"net/http"
"net/url"
"strings"
)
// DefaultClient is the default Client and is used by Get, Head, Post and PostForm.
// Please be careful of intitialization order - for example, if you change
// the global propagator, the DefaultClient might still be using the old one
var DefaultClient = &http.Client{Transport: NewTransport(http.DefaultTransport)}
// Get is a convenient replacement for http.Get that adds a span around the request.
func Get(ctx context.Context, url string) (resp *http.Response, err error) {
req, err := http.NewRequestWithContext(ctx, "GET", url, nil)
if err != nil {
return nil, err
}
return DefaultClient.Do(req)
}
// Head is a convenient replacement for http.Head that adds a span around the request.
func Head(ctx context.Context, url string) (resp *http.Response, err error) {
req, err := http.NewRequestWithContext(ctx, "HEAD", url, nil)
if err != nil {
return nil, err
}
return DefaultClient.Do(req)
}
// Post is a convenient replacement for http.Post that adds a span around the request.
func Post(ctx context.Context, url, contentType string, body io.Reader) (resp *http.Response, err error) {
req, err := http.NewRequestWithContext(ctx, "POST", url, body)
if err != nil {
return nil, err
}
req.Header.Set("Content-Type", contentType)
return DefaultClient.Do(req)
}
// PostForm is a convenient replacement for http.PostForm that adds a span around the request.
func PostForm(ctx context.Context, url string, data url.Values) (resp *http.Response, err error) {
return Post(ctx, url, "application/x-www-form-urlencoded", strings.NewReader(data.Encode()))
}

41
vendor/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/common.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package otelhttp
import (
"net/http"
"go.opentelemetry.io/otel/attribute"
)
// Attribute keys that can be added to a span.
const (
ReadBytesKey = attribute.Key("http.read_bytes") // if anything was read from the request body, the total number of bytes read
ReadErrorKey = attribute.Key("http.read_error") // If an error occurred while reading a request, the string of the error (io.EOF is not recorded)
WroteBytesKey = attribute.Key("http.wrote_bytes") // if anything was written to the response writer, the total number of bytes written
WriteErrorKey = attribute.Key("http.write_error") // if an error occurred while writing a reply, the string of the error (io.EOF is not recorded)
)
// Server HTTP metrics
const (
RequestCount = "http.server.request_count" // Incoming request count total
RequestContentLength = "http.server.request_content_length" // Incoming request bytes total
ResponseContentLength = "http.server.response_content_length" // Incoming response bytes total
ServerLatency = "http.server.duration" // Incoming end to end duration, microseconds
)
// Filter is a predicate used to determine whether a given http.request should
// be traced. A Filter must return true if the request should be traced.
type Filter func(*http.Request) bool

173
vendor/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/config.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package otelhttp
import (
"net/http"
"go.opentelemetry.io/contrib"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/metric"
"go.opentelemetry.io/otel/metric/global"
"go.opentelemetry.io/otel/propagation"
"go.opentelemetry.io/otel/trace"
)
const (
instrumentationName = "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"
)
// config represents the configuration options available for the http.Handler
// and http.Transport types.
type config struct {
Tracer trace.Tracer
Meter metric.Meter
Propagators propagation.TextMapPropagator
SpanStartOptions []trace.SpanOption
ReadEvent bool
WriteEvent bool
Filters []Filter
SpanNameFormatter func(string, *http.Request) string
TracerProvider trace.TracerProvider
MeterProvider metric.MeterProvider
}
// Option Interface used for setting *optional* config properties
type Option interface {
Apply(*config)
}
// OptionFunc provides a convenience wrapper for simple Options
// that can be represented as functions.
type OptionFunc func(*config)
func (o OptionFunc) Apply(c *config) {
o(c)
}
// newConfig creates a new config struct and applies opts to it.
func newConfig(opts ...Option) *config {
c := &config{
Propagators: otel.GetTextMapPropagator(),
TracerProvider: otel.GetTracerProvider(),
MeterProvider: global.GetMeterProvider(),
}
for _, opt := range opts {
opt.Apply(c)
}
c.Tracer = c.TracerProvider.Tracer(
instrumentationName,
trace.WithInstrumentationVersion(contrib.SemVersion()),
)
c.Meter = c.MeterProvider.Meter(
instrumentationName,
metric.WithInstrumentationVersion(contrib.SemVersion()),
)
return c
}
// WithTracerProvider specifies a tracer provider to use for creating a tracer.
// If none is specified, the global provider is used.
func WithTracerProvider(provider trace.TracerProvider) Option {
return OptionFunc(func(cfg *config) {
cfg.TracerProvider = provider
})
}
// WithMeterProvider specifies a meter provider to use for creating a meter.
// If none is specified, the global provider is used.
func WithMeterProvider(provider metric.MeterProvider) Option {
return OptionFunc(func(cfg *config) {
cfg.MeterProvider = provider
})
}
// WithPublicEndpoint configures the Handler to link the span with an incoming
// span context. If this option is not provided, then the association is a child
// association instead of a link.
func WithPublicEndpoint() Option {
return OptionFunc(func(c *config) {
c.SpanStartOptions = append(c.SpanStartOptions, trace.WithNewRoot())
})
}
// WithPropagators configures specific propagators. If this
// option isn't specified then
func WithPropagators(ps propagation.TextMapPropagator) Option {
return OptionFunc(func(c *config) {
c.Propagators = ps
})
}
// WithSpanOptions configures an additional set of
// trace.SpanOptions, which are applied to each new span.
func WithSpanOptions(opts ...trace.SpanOption) Option {
return OptionFunc(func(c *config) {
c.SpanStartOptions = append(c.SpanStartOptions, opts...)
})
}
// WithFilter adds a filter to the list of filters used by the handler.
// If any filter indicates to exclude a request then the request will not be
// traced. All filters must allow a request to be traced for a Span to be created.
// If no filters are provided then all requests are traced.
// Filters will be invoked for each processed request, it is advised to make them
// simple and fast.
func WithFilter(f Filter) Option {
return OptionFunc(func(c *config) {
c.Filters = append(c.Filters, f)
})
}
type event int
// Different types of events that can be recorded, see WithMessageEvents
const (
ReadEvents event = iota
WriteEvents
)
// WithMessageEvents configures the Handler to record the specified events
// (span.AddEvent) on spans. By default only summary attributes are added at the
// end of the request.
//
// Valid events are:
// * ReadEvents: Record the number of bytes read after every http.Request.Body.Read
// using the ReadBytesKey
// * WriteEvents: Record the number of bytes written after every http.ResponeWriter.Write
// using the WriteBytesKey
func WithMessageEvents(events ...event) Option {
return OptionFunc(func(c *config) {
for _, e := range events {
switch e {
case ReadEvents:
c.ReadEvent = true
case WriteEvents:
c.WriteEvent = true
}
}
})
}
// WithSpanNameFormatter takes a function that will be called on every
// request and the returned string will become the Span Name
func WithSpanNameFormatter(f func(operation string, r *http.Request) string) Option {
return OptionFunc(func(c *config) {
c.SpanNameFormatter = f
})
}

18
vendor/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/doc.go generated vendored Normal file
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@ -0,0 +1,18 @@
// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package otelhttp provides an http.Handler and functions that are intended
// to be used to add tracing by wrapping existing handlers (with Handler) and
// routes WithRouteTag.
package otelhttp // import "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"

15
vendor/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/go.mod generated vendored Normal file
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module go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp
go 1.14
replace go.opentelemetry.io/contrib => ../../../..
require (
github.com/felixge/httpsnoop v1.0.1
github.com/stretchr/testify v1.7.0
go.opentelemetry.io/contrib v0.20.0
go.opentelemetry.io/otel v0.20.0
go.opentelemetry.io/otel/metric v0.20.0
go.opentelemetry.io/otel/oteltest v0.20.0
go.opentelemetry.io/otel/trace v0.20.0
)

25
vendor/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/go.sum generated vendored Normal file
View File

@ -0,0 +1,25 @@
github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/felixge/httpsnoop v1.0.1 h1:lvB5Jl89CsZtGIWuTcDM1E/vkVs49/Ml7JJe07l8SPQ=
github.com/felixge/httpsnoop v1.0.1/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
go.opentelemetry.io/otel v0.20.0 h1:eaP0Fqu7SXHwvjiqDq83zImeehOHX8doTvU9AwXON8g=
go.opentelemetry.io/otel v0.20.0/go.mod h1:Y3ugLH2oa81t5QO+Lty+zXf8zC9L26ax4Nzoxm/dooo=
go.opentelemetry.io/otel/metric v0.20.0 h1:4kzhXFP+btKm4jwxpjIqjs41A7MakRFUS86bqLHTIw8=
go.opentelemetry.io/otel/metric v0.20.0/go.mod h1:598I5tYlH1vzBjn+BTuhzTCSb/9debfNp6R3s7Pr1eU=
go.opentelemetry.io/otel/oteltest v0.20.0 h1:HiITxCawalo5vQzdHfKeZurV8x7ljcqAgiWzF6Vaeaw=
go.opentelemetry.io/otel/oteltest v0.20.0/go.mod h1:L7bgKf9ZB7qCwT9Up7i9/pn0PWIa9FqQ2IQ8LoxiGnw=
go.opentelemetry.io/otel/trace v0.20.0 h1:1DL6EXUdcg95gukhuRRvLDO/4X5THh/5dIV52lqtnbw=
go.opentelemetry.io/otel/trace v0.20.0/go.mod h1:6GjCW8zgDjwGHGa6GkyeB8+/5vjT16gUEi0Nf1iBdgw=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

225
vendor/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/handler.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package otelhttp
import (
"io"
"net/http"
"time"
"github.com/felixge/httpsnoop"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/metric"
"go.opentelemetry.io/otel/propagation"
"go.opentelemetry.io/otel/semconv"
"go.opentelemetry.io/otel/trace"
)
var _ http.Handler = &Handler{}
// Handler is http middleware that corresponds to the http.Handler interface and
// is designed to wrap a http.Mux (or equivalent), while individual routes on
// the mux are wrapped with WithRouteTag. A Handler will add various attributes
// to the span using the attribute.Keys defined in this package.
type Handler struct {
operation string
handler http.Handler
tracer trace.Tracer
meter metric.Meter
propagators propagation.TextMapPropagator
spanStartOptions []trace.SpanOption
readEvent bool
writeEvent bool
filters []Filter
spanNameFormatter func(string, *http.Request) string
counters map[string]metric.Int64Counter
valueRecorders map[string]metric.Int64ValueRecorder
}
func defaultHandlerFormatter(operation string, _ *http.Request) string {
return operation
}
// NewHandler wraps the passed handler, functioning like middleware, in a span
// named after the operation and with any provided Options.
func NewHandler(handler http.Handler, operation string, opts ...Option) http.Handler {
h := Handler{
handler: handler,
operation: operation,
}
defaultOpts := []Option{
WithSpanOptions(trace.WithSpanKind(trace.SpanKindServer)),
WithSpanNameFormatter(defaultHandlerFormatter),
}
c := newConfig(append(defaultOpts, opts...)...)
h.configure(c)
h.createMeasures()
return &h
}
func (h *Handler) configure(c *config) {
h.tracer = c.Tracer
h.meter = c.Meter
h.propagators = c.Propagators
h.spanStartOptions = c.SpanStartOptions
h.readEvent = c.ReadEvent
h.writeEvent = c.WriteEvent
h.filters = c.Filters
h.spanNameFormatter = c.SpanNameFormatter
}
func handleErr(err error) {
if err != nil {
otel.Handle(err)
}
}
func (h *Handler) createMeasures() {
h.counters = make(map[string]metric.Int64Counter)
h.valueRecorders = make(map[string]metric.Int64ValueRecorder)
requestBytesCounter, err := h.meter.NewInt64Counter(RequestContentLength)
handleErr(err)
responseBytesCounter, err := h.meter.NewInt64Counter(ResponseContentLength)
handleErr(err)
serverLatencyMeasure, err := h.meter.NewInt64ValueRecorder(ServerLatency)
handleErr(err)
h.counters[RequestContentLength] = requestBytesCounter
h.counters[ResponseContentLength] = responseBytesCounter
h.valueRecorders[ServerLatency] = serverLatencyMeasure
}
// ServeHTTP serves HTTP requests (http.Handler)
func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
requestStartTime := time.Now()
for _, f := range h.filters {
if !f(r) {
// Simply pass through to the handler if a filter rejects the request
h.handler.ServeHTTP(w, r)
return
}
}
opts := append([]trace.SpanOption{
trace.WithAttributes(semconv.NetAttributesFromHTTPRequest("tcp", r)...),
trace.WithAttributes(semconv.EndUserAttributesFromHTTPRequest(r)...),
trace.WithAttributes(semconv.HTTPServerAttributesFromHTTPRequest(h.operation, "", r)...),
}, h.spanStartOptions...) // start with the configured options
ctx := h.propagators.Extract(r.Context(), propagation.HeaderCarrier(r.Header))
ctx, span := h.tracer.Start(ctx, h.spanNameFormatter(h.operation, r), opts...)
defer span.End()
readRecordFunc := func(int64) {}
if h.readEvent {
readRecordFunc = func(n int64) {
span.AddEvent("read", trace.WithAttributes(ReadBytesKey.Int64(n)))
}
}
var bw bodyWrapper
// if request body is nil we don't want to mutate the body as it will affect
// the identity of it in a unforeseeable way because we assert ReadCloser
// fullfills a certain interface and it is indeed nil.
if r.Body != nil {
bw.ReadCloser = r.Body
bw.record = readRecordFunc
r.Body = &bw
}
writeRecordFunc := func(int64) {}
if h.writeEvent {
writeRecordFunc = func(n int64) {
span.AddEvent("write", trace.WithAttributes(WroteBytesKey.Int64(n)))
}
}
rww := &respWriterWrapper{ResponseWriter: w, record: writeRecordFunc, ctx: ctx, props: h.propagators}
// Wrap w to use our ResponseWriter methods while also exposing
// other interfaces that w may implement (http.CloseNotifier,
// http.Flusher, http.Hijacker, http.Pusher, io.ReaderFrom).
w = httpsnoop.Wrap(w, httpsnoop.Hooks{
Header: func(httpsnoop.HeaderFunc) httpsnoop.HeaderFunc {
return rww.Header
},
Write: func(httpsnoop.WriteFunc) httpsnoop.WriteFunc {
return rww.Write
},
WriteHeader: func(httpsnoop.WriteHeaderFunc) httpsnoop.WriteHeaderFunc {
return rww.WriteHeader
},
})
labeler := &Labeler{}
ctx = injectLabeler(ctx, labeler)
h.handler.ServeHTTP(w, r.WithContext(ctx))
setAfterServeAttributes(span, bw.read, rww.written, rww.statusCode, bw.err, rww.err)
// Add metrics
attributes := append(labeler.Get(), semconv.HTTPServerMetricAttributesFromHTTPRequest(h.operation, r)...)
h.counters[RequestContentLength].Add(ctx, bw.read, attributes...)
h.counters[ResponseContentLength].Add(ctx, rww.written, attributes...)
elapsedTime := time.Since(requestStartTime).Microseconds()
h.valueRecorders[ServerLatency].Record(ctx, elapsedTime, attributes...)
}
func setAfterServeAttributes(span trace.Span, read, wrote int64, statusCode int, rerr, werr error) {
attributes := []attribute.KeyValue{}
// TODO: Consider adding an event after each read and write, possibly as an
// option (defaulting to off), so as to not create needlessly verbose spans.
if read > 0 {
attributes = append(attributes, ReadBytesKey.Int64(read))
}
if rerr != nil && rerr != io.EOF {
attributes = append(attributes, ReadErrorKey.String(rerr.Error()))
}
if wrote > 0 {
attributes = append(attributes, WroteBytesKey.Int64(wrote))
}
if statusCode > 0 {
attributes = append(attributes, semconv.HTTPAttributesFromHTTPStatusCode(statusCode)...)
span.SetStatus(semconv.SpanStatusFromHTTPStatusCode(statusCode))
}
if werr != nil && werr != io.EOF {
attributes = append(attributes, WriteErrorKey.String(werr.Error()))
}
span.SetAttributes(attributes...)
}
// WithRouteTag annotates a span with the provided route name using the
// RouteKey Tag.
func WithRouteTag(route string, h http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
span := trace.SpanFromContext(r.Context())
span.SetAttributes(semconv.HTTPRouteKey.String(route))
h.ServeHTTP(w, r)
})
}

65
vendor/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/labeler.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package otelhttp
import (
"context"
"sync"
"go.opentelemetry.io/otel/attribute"
)
// Labeler is used to allow instrumented HTTP handlers to add custom attributes to
// the metrics recorded by the net/http instrumentation.
type Labeler struct {
mu sync.Mutex
attributes []attribute.KeyValue
}
// Add attributes to a Labeler.
func (l *Labeler) Add(ls ...attribute.KeyValue) {
l.mu.Lock()
defer l.mu.Unlock()
l.attributes = append(l.attributes, ls...)
}
// Labels returns a copy of the attributes added to the Labeler.
func (l *Labeler) Get() []attribute.KeyValue {
l.mu.Lock()
defer l.mu.Unlock()
ret := make([]attribute.KeyValue, len(l.attributes))
copy(ret, l.attributes)
return ret
}
type labelerContextKeyType int
const lablelerContextKey labelerContextKeyType = 0
func injectLabeler(ctx context.Context, l *Labeler) context.Context {
return context.WithValue(ctx, lablelerContextKey, l)
}
// LabelerFromContext retrieves a Labeler instance from the provided context if
// one is available. If no Labeler was found in the provided context a new, empty
// Labeler is returned and the second return value is false. In this case it is
// safe to use the Labeler but any attributes added to it will not be used.
func LabelerFromContext(ctx context.Context) (*Labeler, bool) {
l, ok := ctx.Value(lablelerContextKey).(*Labeler)
if !ok {
l = &Labeler{}
}
return l, ok
}

136
vendor/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/transport.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package otelhttp
import (
"context"
"io"
"net/http"
"go.opentelemetry.io/otel/propagation"
"go.opentelemetry.io/otel/semconv"
"go.opentelemetry.io/otel/trace"
)
// Transport implements the http.RoundTripper interface and wraps
// outbound HTTP(S) requests with a span.
type Transport struct {
rt http.RoundTripper
tracer trace.Tracer
propagators propagation.TextMapPropagator
spanStartOptions []trace.SpanOption
filters []Filter
spanNameFormatter func(string, *http.Request) string
}
var _ http.RoundTripper = &Transport{}
// NewTransport wraps the provided http.RoundTripper with one that
// starts a span and injects the span context into the outbound request headers.
//
// If the provided http.RoundTripper is nil, http.DefaultTransport will be used
// as the base http.RoundTripper
func NewTransport(base http.RoundTripper, opts ...Option) *Transport {
if base == nil {
base = http.DefaultTransport
}
t := Transport{
rt: base,
}
defaultOpts := []Option{
WithSpanOptions(trace.WithSpanKind(trace.SpanKindClient)),
WithSpanNameFormatter(defaultTransportFormatter),
}
c := newConfig(append(defaultOpts, opts...)...)
t.applyConfig(c)
return &t
}
func (t *Transport) applyConfig(c *config) {
t.tracer = c.Tracer
t.propagators = c.Propagators
t.spanStartOptions = c.SpanStartOptions
t.filters = c.Filters
t.spanNameFormatter = c.SpanNameFormatter
}
func defaultTransportFormatter(_ string, r *http.Request) string {
return r.Method
}
// RoundTrip creates a Span and propagates its context via the provided request's headers
// before handing the request to the configured base RoundTripper. The created span will
// end when the response body is closed or when a read from the body returns io.EOF.
func (t *Transport) RoundTrip(r *http.Request) (*http.Response, error) {
for _, f := range t.filters {
if !f(r) {
// Simply pass through to the base RoundTripper if a filter rejects the request
return t.rt.RoundTrip(r)
}
}
opts := append([]trace.SpanOption{}, t.spanStartOptions...) // start with the configured options
ctx, span := t.tracer.Start(r.Context(), t.spanNameFormatter("", r), opts...)
r = r.WithContext(ctx)
span.SetAttributes(semconv.HTTPClientAttributesFromHTTPRequest(r)...)
t.propagators.Inject(ctx, propagation.HeaderCarrier(r.Header))
res, err := t.rt.RoundTrip(r)
if err != nil {
span.RecordError(err)
span.End()
return res, err
}
span.SetAttributes(semconv.HTTPAttributesFromHTTPStatusCode(res.StatusCode)...)
span.SetStatus(semconv.SpanStatusFromHTTPStatusCode(res.StatusCode))
res.Body = &wrappedBody{ctx: ctx, span: span, body: res.Body}
return res, err
}
type wrappedBody struct {
ctx context.Context
span trace.Span
body io.ReadCloser
}
var _ io.ReadCloser = &wrappedBody{}
func (wb *wrappedBody) Read(b []byte) (int, error) {
n, err := wb.body.Read(b)
switch err {
case nil:
// nothing to do here but fall through to the return
case io.EOF:
wb.span.End()
default:
wb.span.RecordError(err)
}
return n, err
}
func (wb *wrappedBody) Close() error {
wb.span.End()
return wb.body.Close()
}

96
vendor/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/wrap.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package otelhttp
import (
"context"
"io"
"net/http"
"go.opentelemetry.io/otel/propagation"
)
var _ io.ReadCloser = &bodyWrapper{}
// bodyWrapper wraps a http.Request.Body (an io.ReadCloser) to track the number
// of bytes read and the last error
type bodyWrapper struct {
io.ReadCloser
record func(n int64) // must not be nil
read int64
err error
}
func (w *bodyWrapper) Read(b []byte) (int, error) {
n, err := w.ReadCloser.Read(b)
n1 := int64(n)
w.read += n1
w.err = err
w.record(n1)
return n, err
}
func (w *bodyWrapper) Close() error {
return w.ReadCloser.Close()
}
var _ http.ResponseWriter = &respWriterWrapper{}
// respWriterWrapper wraps a http.ResponseWriter in order to track the number of
// bytes written, the last error, and to catch the returned statusCode
// TODO: The wrapped http.ResponseWriter doesn't implement any of the optional
// types (http.Hijacker, http.Pusher, http.CloseNotifier, http.Flusher, etc)
// that may be useful when using it in real life situations.
type respWriterWrapper struct {
http.ResponseWriter
record func(n int64) // must not be nil
// used to inject the header
ctx context.Context
props propagation.TextMapPropagator
written int64
statusCode int
err error
wroteHeader bool
}
func (w *respWriterWrapper) Header() http.Header {
return w.ResponseWriter.Header()
}
func (w *respWriterWrapper) Write(p []byte) (int, error) {
if !w.wroteHeader {
w.WriteHeader(http.StatusOK)
}
n, err := w.ResponseWriter.Write(p)
n1 := int64(n)
w.record(n1)
w.written += n1
w.err = err
return n, err
}
func (w *respWriterWrapper) WriteHeader(statusCode int) {
if w.wroteHeader {
return
}
w.wroteHeader = true
w.statusCode = statusCode
w.props.Inject(w.ctx, propagation.HeaderCarrier(w.Header()))
w.ResponseWriter.WriteHeader(statusCode)
}

158
vendor/go.opentelemetry.io/contrib/pre_release.sh generated vendored Normal file
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#!/usr/bin/env bash
# Copyright The OpenTelemetry Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# This script is used for
# a) creating a new tagged release of go.opentelemetry.io/contrib
# b) bumping the referenced version of go.opentelemetry.io/otel
#
# The options can be used together or individually.
#
set -e
declare CONTRIB_TAG
declare OTEL_TAG
help() {
printf "\n"
printf "Usage: %s [-o otel_tag] [-t tag]\n" "$0"
printf "\t-o Otel release tag. Update all go.mod to reference go.opentelemetry.io/otel <otel_tag>.\n"
printf "\t-t New Contrib unreleased tag. Update all go.mod files with this tag.\n"
exit 1 # Exit script after printing help
}
while getopts "t:o:" opt
do
case "$opt" in
t ) CONTRIB_TAG="$OPTARG" ;;
o ) OTEL_TAG="$OPTARG" ;;
? ) help ;; # Print help
esac
done
declare -r SEMVER_REGEX="^v(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)(\\-[0-9A-Za-z-]+(\\.[0-9A-Za-z-]+)*)?(\\+[0-9A-Za-z-]+(\\.[0-9A-Za-z-]+)*)?$"
validate_tag() {
local tag_=$1
if [[ "${tag_}" =~ ${SEMVER_REGEX} ]]; then
printf "%s is valid semver tag.\n" "${tag_}"
else
printf "%s is not a valid semver tag.\n" "${tag_}"
return 1
fi
}
# Print help in case parameters are empty
if [[ -z "$CONTRIB_TAG" && -z "$OTEL_TAG" ]]
then
printf "At least one of '-o' or '-t' must be specified.\n"
help
fi
## Validate tags first
if [ -n "${OTEL_TAG}" ]; then
validate_tag "${OTEL_TAG}" || exit $?
# check that OTEL_TAG is a currently released tag for go.opentelemetry.io/otel
TMPDIR=$(mktemp -d "/tmp/otel-contrib.XXXXXX") || exit 1
trap "rm -fr ${TMPDIR}" EXIT
(cd "${TMPDIR}" && go mod init tagtest)
# requires go 1.14 for support of '-modfile'
if ! go get -modfile="${TMPDIR}/go.mod" -d -v "go.opentelemetry.io/otel@${OTEL_TAG}"; then
printf "go.opentelemetry.io/otel %s does not exist. Please supply a valid tag\n" "${OTEL_TAG}"
exit 1
fi
fi
if [ -n "${CONTRIB_TAG}" ]; then
validate_tag "${CONTRIB_TAG}" || exit $?
TAG_FOUND=$(git tag --list "${CONTRIB_TAG}")
if [[ ${TAG_FOUND} = "${CONTRIB_TAG}" ]] ; then
printf "Tag %s already exists in this repo\n" "${CONTRIB_TAG}"
exit 1
fi
else
CONTRIB_TAG=${OTEL_TAG} # if contrib_tag not specified, but OTEL_TAG is, then set it to OTEL_TAG
fi
# Get version for contrib.go
OTEL_CONTRIB_VERSION=$(echo "${CONTRIB_TAG}" | egrep -o "${SEMVER_REGEX}")
# Strip leading v
OTEL_CONTRIB_VERSION="${OTEL_CONTRIB_VERSION#v}"
cd "$(dirname "$0")"
if ! git diff --quiet; then \
printf "Working tree is not clean, can't proceed\n"
git status
git diff
exit 1
fi
# Update contrib.go version definition
cp contrib.go contrib.go.bak
sed "s/\(return \"\)[0-9]*\.[0-9]*\.[0-9]*\"/\1${OTEL_CONTRIB_VERSION}\"/" ./contrib.go.bak > ./contrib.go
rm -f ./contrib.go.bak
declare -r BRANCH_NAME=pre_release_${CONTRIB_TAG}
patch_gomods() {
local pkg_=$1
local tag_=$2
# now do the same for all the directories underneath
PACKAGE_DIRS=$(find . -mindepth 2 -type f -name 'go.mod' -exec dirname {} \; | egrep -v 'tools' | sed 's|^\.\/||' | sort)
# quote any '.' characters in the pkg name
local quoted_pkg_=${pkg_//./\\.}
for dir in $PACKAGE_DIRS; do
cp "${dir}/go.mod" "${dir}/go.mod.bak"
sed "s|${quoted_pkg_}\([^ ]*\) v[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*[^0-9]*.*$|${pkg_}\1 ${tag_}|" "${dir}/go.mod.bak" >"${dir}/go.mod"
rm -f "${dir}/go.mod.bak"
done
}
# branch off from existing main
git checkout -b "${BRANCH_NAME}" main
# Update go.mods
if [ -n "${OTEL_TAG}" ]; then
# first update the top most module
go get "go.opentelemetry.io/otel@${OTEL_TAG}"
patch_gomods go.opentelemetry.io/otel "${OTEL_TAG}"
fi
if [ -n "${CONTRIB_TAG}" ]; then
patch_gomods go.opentelemetry.io/contrib "${CONTRIB_TAG}"
fi
git diff
# Run lint to update go.sum
make lint
# Add changes and commit.
git add .
make ci
# Check whether registry links are up to date
make registry-links-check
declare COMMIT_MSG=""
if [ -n "${OTEL_TAG}" ]; then
COMMIT_MSG+="Bumping otel version to ${OTEL_TAG}"
fi
COMMIT_MSG+=". Prepare for releasing ${CONTRIB_TAG}"
git commit -m "${COMMIT_MSG}"
printf "Now run following to verify the changes.\ngit diff main\n"
printf "\nThen push the changes to upstream\n"

178
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#!/usr/bin/env bash
# Copyright The OpenTelemetry Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
readonly PROGNAME=$(basename "$0")
readonly PROGDIR=$(readlink -m "$(dirname "$0")")
readonly EXCLUDE_PACKAGES="tools"
readonly SEMVER_REGEX="v(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)(\\-[0-9A-Za-z-]+(\\.[0-9A-Za-z-]+)*)?(\\+[0-9A-Za-z-]+(\\.[0-9A-Za-z-]+)*)?"
usage() {
cat <<- EOF
Usage: $PROGNAME [OPTIONS] SEMVER_TAG COMMIT_HASH
Creates git tag for all Go packages in project.
OPTIONS:
-h --help Show this help.
ARGUMENTS:
SEMVER_TAG Semantic version to tag with.
COMMIT_HASH Git commit hash to tag.
EOF
}
cmdline() {
local arg commit
for arg
do
local delim=""
case "$arg" in
# Translate long form options to short form.
--help) args="${args}-h ";;
# Pass through for everything else.
*) [[ "${arg:0:1}" == "-" ]] || delim="\""
args="${args}${delim}${arg}${delim} ";;
esac
done
# Reset and process short form options.
eval set -- "$args"
while getopts "h" OPTION
do
case $OPTION in
h)
usage
exit 0
;;
*)
echo "unknown option: $OPTION"
usage
exit 1
;;
esac
done
# Positional arguments.
shift $((OPTIND-1))
readonly TAG="$1"
if [ -z "$TAG" ]
then
echo "missing SEMVER_TAG"
usage
exit 1
fi
if [[ ! "$TAG" =~ $SEMVER_REGEX ]]
then
printf "invalid semantic version: %s\n" "$TAG"
exit 2
fi
if [[ "$( git tag --list "$TAG" )" ]]
then
printf "tag already exists: %s\n" "$TAG"
exit 2
fi
shift
commit="$1"
if [ -z "$commit" ]
then
echo "missing COMMIT_HASH"
usage
exit 1
fi
# Verify rev is for a commit and unify hashes into a complete SHA1.
readonly SHA="$( git rev-parse --quiet --verify "${commit}^{commit}" )"
if [ -z "$SHA" ]
then
printf "invalid commit hash: %s\n" "$commit"
exit 2
fi
if [ "$( git merge-base "$SHA" HEAD )" != "$SHA" ]
then
printf "commit '%s' not found on this branch\n" "$commit"
exit 2
fi
}
package_dirs() {
# Return a list of package directories in the form:
#
# package/directory/a
# package/directory/b
# deeper/package/directory/a
# ...
#
# Making sure to exclude any packages in the EXCLUDE_PACKAGES regexp.
find . -mindepth 2 -type f -name 'go.mod' -exec dirname {} \; \
| grep -E -v "$EXCLUDE_PACKAGES" \
| sed 's/^\.\///' \
| sort
}
git_tag() {
local tag="$1"
local commit="$2"
git tag -a "$tag" -s -m "Version $tag" "$commit"
}
previous_version() {
local current="$1"
# Requires git > 2.0
git tag -l --sort=v:refname \
| grep -E "^${SEMVER_REGEX}$" \
| grep -v "$current" \
| tail -1
}
print_changes() {
local tag="$1"
local previous
previous="$( previous_version "$tag" )"
if [ -n "$previous" ]
then
printf "\nRaw changes made between %s and %s\n" "$previous" "$tag"
printf "======================================\n"
git --no-pager log --pretty=oneline "${previous}..$tag"
fi
}
main() {
local dir
cmdline "$@"
cd "$PROGDIR" || exit 3
# Create tag for root package.
git_tag "$TAG" "$SHA"
printf "created tag: %s\n" "$TAG"
# Create tag for all sub-packages.
for dir in $( package_dirs )
do
git_tag "${dir}/$TAG" "$SHA"
printf "created tag: %s\n" "${dir}/$TAG"
done
print_changes "$TAG"
}
main "$@"

19
vendor/go.opentelemetry.io/otel/.gitignore generated vendored Normal file
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.DS_Store
Thumbs.db
.tools/
.idea/
.vscode/
*.iml
*.so
coverage.*
gen/
/example/jaeger/jaeger
/example/namedtracer/namedtracer
/example/opencensus/opencensus
/example/prometheus/prometheus
/example/prom-collector/prom-collector
/example/zipkin/zipkin
/example/otel-collector/otel-collector

3
vendor/go.opentelemetry.io/otel/.gitmodules generated vendored Normal file
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[submodule "opentelemetry-proto"]
path = exporters/otlp/internal/opentelemetry-proto
url = https://github.com/open-telemetry/opentelemetry-proto

32
vendor/go.opentelemetry.io/otel/.golangci.yml generated vendored Normal file
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# See https://github.com/golangci/golangci-lint#config-file
run:
issues-exit-code: 1 #Default
tests: true #Default
linters:
enable:
- misspell
- goimports
- golint
- gofmt
issues:
exclude-rules:
# helpers in tests often (rightfully) pass a *testing.T as their first argument
- path: _test\.go
text: "context.Context should be the first parameter of a function"
linters:
- golint
# Yes, they are, but it's okay in a test
- path: _test\.go
text: "exported func.*returns unexported type.*which can be annoying to use"
linters:
- golint
linters-settings:
misspell:
locale: US
ignore-words:
- cancelled
goimports:
local-prefixes: go.opentelemetry.io

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vendor/go.opentelemetry.io/otel/CODEOWNERS generated vendored Normal file
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#####################################################
#
# List of approvers for this repository
#
#####################################################
#
# Learn about membership in OpenTelemetry community:
# https://github.com/open-telemetry/community/blob/main/community-membership.md
#
#
# Learn about CODEOWNERS file format:
# https://help.github.com/en/articles/about-code-owners
#
* @jmacd @MrAlias @Aneurysm9 @evantorrie @XSAM @dashpole @paivagustavo
CODEOWNERS @MrAlias @Aneurysm9

380
vendor/go.opentelemetry.io/otel/CONTRIBUTING.md generated vendored Normal file
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# Contributing to opentelemetry-go
The Go special interest group (SIG) meets regularly. See the
OpenTelemetry
[community](https://github.com/open-telemetry/community#golang-sdk)
repo for information on this and other language SIGs.
See the [public meeting
notes](https://docs.google.com/document/d/1A63zSWX0x2CyCK_LoNhmQC4rqhLpYXJzXbEPDUQ2n6w/edit#heading=h.9tngw7jdwd6b)
for a summary description of past meetings. To request edit access,
join the meeting or get in touch on
[Slack](https://cloud-native.slack.com/archives/C01NPAXACKT).
## Development
You can view and edit the source code by cloning this repository:
```bash
git clone https://github.com/open-telemetry/opentelemetry-go.git
```
Run `make test` to run the tests instead of `go test`.
There are some generated files checked into the repo. To make sure
that the generated files are up-to-date, run `make` (or `make
precommit` - the `precommit` target is the default).
The `precommit` target also fixes the formatting of the code and
checks the status of the go module files.
If after running `make precommit` the output of `git status` contains
`nothing to commit, working tree clean` then it means that everything
is up-to-date and properly formatted.
## Pull Requests
### How to Send Pull Requests
Everyone is welcome to contribute code to `opentelemetry-go` via
GitHub pull requests (PRs).
To create a new PR, fork the project in GitHub and clone the upstream
repo:
```sh
$ go get -d go.opentelemetry.io/otel
```
(This may print some warning about "build constraints exclude all Go
files", just ignore it.)
This will put the project in `${GOPATH}/src/go.opentelemetry.io/otel`. You
can alternatively use `git` directly with:
```sh
$ git clone https://github.com/open-telemetry/opentelemetry-go
```
(Note that `git clone` is *not* using the `go.opentelemetry.io/otel` name -
that name is a kind of a redirector to GitHub that `go get` can
understand, but `git` does not.)
This would put the project in the `opentelemetry-go` directory in
current working directory.
Enter the newly created directory and add your fork as a new remote:
```sh
$ git remote add <YOUR_FORK> git@github.com:<YOUR_GITHUB_USERNAME>/opentelemetry-go
```
Check out a new branch, make modifications, run linters and tests, update
`CHANGELOG.md`, and push the branch to your fork:
```sh
$ git checkout -b <YOUR_BRANCH_NAME>
# edit files
# update changelog
$ make precommit
$ git add -p
$ git commit
$ git push <YOUR_FORK> <YOUR_BRANCH_NAME>
```
Open a pull request against the main `opentelemetry-go` repo. Be sure to add the pull
request ID to the entry you added to `CHANGELOG.md`.
### How to Receive Comments
* If the PR is not ready for review, please put `[WIP]` in the title,
tag it as `work-in-progress`, or mark it as
[`draft`](https://github.blog/2019-02-14-introducing-draft-pull-requests/).
* Make sure CLA is signed and CI is clear.
### How to Get PRs Merged
A PR is considered to be **ready to merge** when:
* It has received two approvals from Collaborators/Maintainers (at
different companies). This is not enforced through technical means
and a PR may be **ready to merge** with a single approval if the change
and its approach have been discussed and consensus reached.
* Feedback has been addressed.
* Any substantive changes to your PR will require that you clear any prior
Approval reviews, this includes changes resulting from other feedback. Unless
the approver explicitly stated that their approval will persist across
changes it should be assumed that the PR needs their review again. Other
project members (e.g. approvers, maintainers) can help with this if there are
any questions or if you forget to clear reviews.
* It has been open for review for at least one working day. This gives
people reasonable time to review.
* Trivial changes (typo, cosmetic, doc, etc.) do not have to wait for
one day and may be merged with a single Maintainer's approval.
* `CHANGELOG.md` has been updated to reflect what has been
added, changed, removed, or fixed.
* Urgent fix can take exception as long as it has been actively
communicated.
Any Maintainer can merge the PR once it is **ready to merge**.
## Design Choices
As with other OpenTelemetry clients, opentelemetry-go follows the
[opentelemetry-specification](https://github.com/open-telemetry/opentelemetry-specification).
It's especially valuable to read through the [library
guidelines](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/library-guidelines.md).
### Focus on Capabilities, Not Structure Compliance
OpenTelemetry is an evolving specification, one where the desires and
use cases are clear, but the method to satisfy those uses cases are
not.
As such, Contributions should provide functionality and behavior that
conforms to the specification, but the interface and structure is
flexible.
It is preferable to have contributions follow the idioms of the
language rather than conform to specific API names or argument
patterns in the spec.
For a deeper discussion, see:
https://github.com/open-telemetry/opentelemetry-specification/issues/165
## Style Guide
One of the primary goals of this project is that it is actually used by
developers. With this goal in mind the project strives to build
user-friendly and idiomatic Go code adhering to the Go community's best
practices.
For a non-comprehensive but foundational overview of these best practices
the [Effective Go](https://golang.org/doc/effective_go.html) documentation
is an excellent starting place.
As a convenience for developers building this project the `make precommit`
will format, lint, validate, and in some cases fix the changes you plan to
submit. This check will need to pass for your changes to be able to be
merged.
In addition to idiomatic Go, the project has adopted certain standards for
implementations of common patterns. These standards should be followed as a
default, and if they are not followed documentation needs to be included as
to the reasons why.
### Configuration
When creating an instantiation function for a complex `struct` it is useful
to allow variable number of options to be applied. However, the strong type
system of Go restricts the function design options. There are a few ways to
solve this problem, but we have landed on the following design.
#### `config`
Configuration should be held in a `struct` named `config`, or prefixed with
specific type name this Configuration applies to if there are multiple
`config` in the package. This `struct` must contain configuration options.
```go
// config contains configuration options for a thing.
type config struct {
// options ...
}
```
In general the `config` `struct` will not need to be used externally to the
package and should be unexported. If, however, it is expected that the user
will likely want to build custom options for the configuration, the `config`
should be exported. Please, include in the documentation for the `config`
how the user can extend the configuration.
It is important that `config` are not shared across package boundaries.
Meaning a `config` from one package should not be directly used by another.
Optionally, it is common to include a `newConfig` function (with the same
naming scheme). This function wraps any defaults setting and looping over
all options to create a configured `config`.
```go
// newConfig returns an appropriately configured config.
func newConfig([]Option) config {
// Set default values for config.
config := config{/* […] */}
for _, option := range options {
option.Apply(&config)
}
// Preform any validation here.
return config
}
```
If validation of the `config` options is also preformed this can return an
error as well that is expected to be handled by the instantiation function
or propagated to the user.
Given the design goal of not having the user need to work with the `config`,
the `newConfig` function should also be unexported.
#### `Option`
To set the value of the options a `config` contains, a corresponding
`Option` interface type should be used.
```go
type Option interface {
Apply(*config)
}
```
The name of the interface should be prefixed in the same way the
corresponding `config` is (if at all).
#### Options
All user configurable options for a `config` must have a related unexported
implementation of the `Option` interface and an exported configuration
function that wraps this implementation.
The wrapping function name should be prefixed with `With*` (or in the
special case of a boolean options `Without*`) and should have the following
function signature.
```go
func With*(…) Option { … }
```
##### `bool` Options
```go
type defaultFalseOption bool
func (o defaultFalseOption) Apply(c *config) {
c.Bool = bool(o)
}
// WithOption sets a T* to have an option included.
func WithOption() Option {
return defaultFalseOption(true)
}
```
```go
type defaultTrueOption bool
func (o defaultTrueOption) Apply(c *config) {
c.Bool = bool(o)
}
// WithoutOption sets a T* to have Bool option excluded.
func WithoutOption() Option {
return defaultTrueOption(false)
}
````
##### Declared Type Options
```go
type myTypeOption struct {
MyType MyType
}
func (o myTypeOption) Apply(c *config) {
c.MyType = o.MyType
}
// WithMyType sets T* to have include MyType.
func WithMyType(t MyType) Option {
return myTypeOption{t}
}
```
#### Instantiation
Using this configuration pattern to configure instantiation with a `New*`
function.
```go
func NewT*(options ...Option) T* {…}
```
Any required parameters can be declared before the variadic `options`.
#### Dealing with Overlap
Sometimes there are multiple complex `struct` that share common
configuration and also have distinct configuration. To avoid repeated
portions of `config`s, a common `config` can be used with the union of
options being handled with the `Option` interface.
For example.
```go
// config holds options for all animals.
type config struct {
Weight float64
Color string
MaxAltitude float64
}
// DogOption apply Dog specific options.
type DogOption interface {
ApplyDog(*config)
}
// BirdOption apply Bird specific options.
type BirdOption interface {
ApplyBird(*config)
}
// Option apply options for all animals.
type Option interface {
BirdOption
DogOption
}
type weightOption float64
func (o weightOption) ApplyDog(c *config) { c.Weight = float64(o) }
func (o weightOption) ApplyBird(c *config) { c.Weight = float64(o) }
func WithWeight(w float64) Option { return weightOption(w) }
type furColorOption string
func (o furColorOption) ApplyDog(c *config) { c.Color = string(o) }
func WithFurColor(c string) DogOption { return furColorOption(c) }
type maxAltitudeOption float64
func (o maxAltitudeOption) ApplyBird(c *config) { c.MaxAltitude = float64(o) }
func WithMaxAltitude(a float64) BirdOption { return maxAltitudeOption(a) }
func NewDog(name string, o ...DogOption) Dog {…}
func NewBird(name string, o ...BirdOption) Bird {…}
```
### Interface Type
To allow other developers to better comprehend the code, it is important
to ensure it is sufficiently documented. One simple measure that contributes
to this aim is self-documenting by naming method parameters. Therefore,
where appropriate, methods of every exported interface type should have
their parameters appropriately named.
## Approvers and Maintainers
Approvers:
- [Evan Torrie](https://github.com/evantorrie), Verizon Media
- [Josh MacDonald](https://github.com/jmacd), LightStep
- [Sam Xie](https://github.com/XSAM)
- [David Ashpole](https://github.com/dashpole), Google
- [Gustavo Silva Paiva](https://github.com/paivagustavo), LightStep
Maintainers:
- [Anthony Mirabella](https://github.com/Aneurysm9), AWS
- [Tyler Yahn](https://github.com/MrAlias), Splunk
### Become an Approver or a Maintainer
See the [community membership document in OpenTelemetry community
repo](https://github.com/open-telemetry/community/blob/main/community-membership.md).

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# Copyright The OpenTelemetry Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
EXAMPLES := $(shell ./get_main_pkgs.sh ./example)
TOOLS_MOD_DIR := ./internal/tools
# All source code and documents. Used in spell check.
ALL_DOCS := $(shell find . -name '*.md' -type f | sort)
# All directories with go.mod files related to opentelemetry library. Used for building, testing and linting.
ALL_GO_MOD_DIRS := $(filter-out $(TOOLS_MOD_DIR), $(shell find . -type f -name 'go.mod' -exec dirname {} \; | egrep -v '^./example' | sort)) $(shell find ./example -type f -name 'go.mod' -exec dirname {} \; | sort)
ALL_COVERAGE_MOD_DIRS := $(shell find . -type f -name 'go.mod' -exec dirname {} \; | egrep -v '^./example|^$(TOOLS_MOD_DIR)' | sort)
GO = go
TIMEOUT = 60
.DEFAULT_GOAL := precommit
.PHONY: precommit ci
precommit: dependabot-check license-check lint build examples test-default
ci: precommit check-clean-work-tree test-coverage
# Tools
TOOLS = $(CURDIR)/.tools
$(TOOLS):
@mkdir -p $@
$(TOOLS)/%: | $(TOOLS)
cd $(TOOLS_MOD_DIR) && \
$(GO) build -o $@ $(PACKAGE)
CROSSLINK = $(TOOLS)/crosslink
$(TOOLS)/crosslink: PACKAGE=go.opentelemetry.io/otel/$(TOOLS_MOD_DIR)/crosslink
GOLANGCI_LINT = $(TOOLS)/golangci-lint
$(TOOLS)/golangci-lint: PACKAGE=github.com/golangci/golangci-lint/cmd/golangci-lint
MISSPELL = $(TOOLS)/misspell
$(TOOLS)/misspell: PACKAGE= github.com/client9/misspell/cmd/misspell
STRINGER = $(TOOLS)/stringer
$(TOOLS)/stringer: PACKAGE=golang.org/x/tools/cmd/stringer
$(TOOLS)/gojq: PACKAGE=github.com/itchyny/gojq/cmd/gojq
.PHONY: tools
tools: $(CROSSLINK) $(GOLANGCI_LINT) $(MISSPELL) $(STRINGER) $(TOOLS)/gojq
# Build
.PHONY: examples generate build
examples:
@set -e; for dir in $(EXAMPLES); do \
echo "$(GO) build $${dir}/..."; \
(cd "$${dir}" && \
$(GO) build .); \
done
generate: $(STRINGER)
set -e; for dir in $(ALL_GO_MOD_DIRS); do \
echo "$(GO) generate $${dir}/..."; \
(cd "$${dir}" && \
PATH="$(TOOLS):$${PATH}" $(GO) generate ./...); \
done
build: generate
# Build all package code including testing code.
set -e; for dir in $(ALL_GO_MOD_DIRS); do \
echo "$(GO) build $${dir}/..."; \
(cd "$${dir}" && \
$(GO) build ./... && \
$(GO) list ./... \
| grep -v third_party \
| xargs $(GO) test -vet=off -run xxxxxMatchNothingxxxxx >/dev/null); \
done
# Tests
TEST_TARGETS := test-default test-bench test-short test-verbose test-race
.PHONY: $(TEST_TARGETS) test
test-default: ARGS=-v -race
test-bench: ARGS=-run=xxxxxMatchNothingxxxxx -test.benchtime=1ms -bench=.
test-short: ARGS=-short
test-verbose: ARGS=-v
test-race: ARGS=-race
$(TEST_TARGETS): test
test:
@set -e; for dir in $(ALL_GO_MOD_DIRS); do \
echo "$(GO) test -timeout $(TIMEOUT)s $(ARGS) $${dir}/..."; \
(cd "$${dir}" && \
$(GO) list ./... \
| grep -v third_party \
| xargs $(GO) test -timeout $(TIMEOUT)s $(ARGS)); \
done
COVERAGE_MODE = atomic
COVERAGE_PROFILE = coverage.out
.PHONY: test-coverage
test-coverage:
@set -e; \
printf "" > coverage.txt; \
for dir in $(ALL_COVERAGE_MOD_DIRS); do \
echo "$(GO) test -coverpkg=./... -covermode=$(COVERAGE_MODE) -coverprofile="$(COVERAGE_PROFILE)" $${dir}/..."; \
(cd "$${dir}" && \
$(GO) list ./... \
| grep -v third_party \
| xargs $(GO) test -coverpkg=./... -covermode=$(COVERAGE_MODE) -coverprofile="$(COVERAGE_PROFILE)" && \
$(GO) tool cover -html=coverage.out -o coverage.html); \
[ -f "$${dir}/coverage.out" ] && cat "$${dir}/coverage.out" >> coverage.txt; \
done; \
sed -i.bak -e '2,$$ { /^mode: /d; }' coverage.txt
.PHONY: lint
lint: misspell lint-modules | $(GOLANGCI_LINT)
set -e; for dir in $(ALL_GO_MOD_DIRS); do \
echo "golangci-lint in $${dir}"; \
(cd "$${dir}" && \
$(GOLANGCI_LINT) run --fix && \
$(GOLANGCI_LINT) run); \
done
.PHONY: misspell
misspell: | $(MISSPELL)
$(MISSPELL) -w $(ALL_DOCS)
.PHONY: lint-modules
lint-modules: | $(CROSSLINK)
set -e; for dir in $(ALL_GO_MOD_DIRS) $(TOOLS_MOD_DIR); do \
echo "$(GO) mod tidy in $${dir}"; \
(cd "$${dir}" && \
$(GO) mod tidy); \
done
echo "cross-linking all go modules"
$(CROSSLINK)
.PHONY: license-check
license-check:
@licRes=$$(for f in $$(find . -type f \( -iname '*.go' -o -iname '*.sh' \) ! -path '**/third_party/*' ! -path './exporters/otlp/internal/opentelemetry-proto/*') ; do \
awk '/Copyright The OpenTelemetry Authors|generated|GENERATED/ && NR<=3 { found=1; next } END { if (!found) print FILENAME }' $$f; \
done); \
if [ -n "$${licRes}" ]; then \
echo "license header checking failed:"; echo "$${licRes}"; \
exit 1; \
fi
.PHONY: dependabot-check
dependabot-check:
@result=$$( \
for f in $$( find . -type f -name go.mod -exec dirname {} \; | sed 's/^.\/\?/\//' ); \
do grep -q "$$f" .github/dependabot.yml \
|| echo "$$f"; \
done; \
); \
if [ -n "$$result" ]; then \
echo "missing go.mod dependabot check:"; echo "$$result"; \
exit 1; \
fi
.PHONY: check-clean-work-tree
check-clean-work-tree:
@if ! git diff --quiet; then \
echo; \
echo 'Working tree is not clean, did you forget to run "make precommit"?'; \
echo; \
git status; \
exit 1; \
fi

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# OpenTelemetry-Go
[![CI](https://github.com/open-telemetry/opentelemetry-go/workflows/ci/badge.svg)](https://github.com/open-telemetry/opentelemetry-go/actions?query=workflow%3Aci+branch%3Amain)
[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel)](https://pkg.go.dev/go.opentelemetry.io/otel)
[![Go Report Card](https://goreportcard.com/badge/go.opentelemetry.io/otel)](https://goreportcard.com/report/go.opentelemetry.io/otel)
[![Slack](https://img.shields.io/badge/slack-@cncf/otel--go-brightgreen.svg?logo=slack)](https://cloud-native.slack.com/archives/C01NPAXACKT)
The Go [OpenTelemetry](https://opentelemetry.io/) implementation.
## Project Status
**Warning**: this project is currently in a pre-GA phase. Backwards
incompatible changes may be introduced in subsequent minor version releases as
we work to track the evolving OpenTelemetry specification and user feedback.
Our progress towards a GA release candidate is tracked in [this project
board](https://github.com/orgs/open-telemetry/projects/5). This release
candidate will follow semantic versioning and will be released with a major
version greater than zero.
Progress and status specific to this repository is tracked in our local
[project boards](https://github.com/open-telemetry/opentelemetry-go/projects)
and
[milestones](https://github.com/open-telemetry/opentelemetry-go/milestones).
Project versioning information and stability guarantees can be found in the
[versioning documentation](./VERSIONING.md).
### Compatibility
This project is tested on the following systems.
| OS | Go Version | Architecture |
| ------- | ---------- | ------------ |
| Ubuntu | 1.15 | amd64 |
| Ubuntu | 1.14 | amd64 |
| Ubuntu | 1.15 | 386 |
| Ubuntu | 1.14 | 386 |
| MacOS | 1.15 | amd64 |
| MacOS | 1.14 | amd64 |
| Windows | 1.15 | amd64 |
| Windows | 1.14 | amd64 |
| Windows | 1.15 | 386 |
| Windows | 1.14 | 386 |
While this project should work for other systems, no compatibility guarantees
are made for those systems currently.
## Getting Started
You can find a getting started guide on [opentelemetry.io](https://opentelemetry.io/docs/go/getting-started/).
OpenTelemetry's goal is to provide a single set of APIs to capture distributed
traces and metrics from your application and send them to an observability
platform. This project allows you to do just that for applications written in
Go. There are two steps to this process: instrument your application, and
configure an exporter.
### Instrumentation
To start capturing distributed traces and metric events from your application
it first needs to be instrumented. The easiest way to do this is by using an
instrumentation library for your code. Be sure to check out [the officially
supported instrumentation
libraries](https://github.com/open-telemetry/opentelemetry-go-contrib/tree/main/instrumentation).
If you need to extend the telemetry an instrumentation library provides or want
to build your own instrumentation for your application directly you will need
to use the
[go.opentelemetry.io/otel/api](https://pkg.go.dev/go.opentelemetry.io/otel/api)
package. The included [examples](./example/) are a good way to see some
practical uses of this process.
### Export
Now that your application is instrumented to collect telemetry, it needs an
export pipeline to send that telemetry to an observability platform.
You can find officially supported exporters [here](./exporters/) and in the
companion [contrib
repository](https://github.com/open-telemetry/opentelemetry-go-contrib/tree/main/exporters/metric).
Additionally, there are many vendor specific or 3rd party exporters for
OpenTelemetry. These exporters are broken down by
[trace](https://pkg.go.dev/go.opentelemetry.io/otel/sdk/export/trace?tab=importedby)
and
[metric](https://pkg.go.dev/go.opentelemetry.io/otel/sdk/export/metric?tab=importedby)
support.
## Contributing
See the [contributing documentation](CONTRIBUTING.md).

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# Release Process
## Pre-Release
Update go.mod for submodules to depend on the new release which will happen in the next step.
1. Run the pre-release script. It creates a branch `pre_release_<new tag>` that will contain all release changes.
```
./pre_release.sh -t <new tag>
```
2. Verify the changes.
```
git diff main
```
This should have changed the version for all modules to be `<new tag>`.
3. Update the [Changelog](./CHANGELOG.md).
- Make sure all relevant changes for this release are included and are in language that non-contributors to the project can understand.
To verify this, you can look directly at the commits since the `<last tag>`.
```
git --no-pager log --pretty=oneline "<last tag>..HEAD"
```
- Move all the `Unreleased` changes into a new section following the title scheme (`[<new tag>] - <date of release>`).
- Update all the appropriate links at the bottom.
4. Push the changes to upstream and create a Pull Request on GitHub.
Be sure to include the curated changes from the [Changelog](./CHANGELOG.md) in the description.
## Tag
Once the Pull Request with all the version changes has been approved and merged it is time to tag the merged commit.
***IMPORTANT***: It is critical you use the same tag that you used in the Pre-Release step!
Failure to do so will leave things in a broken state.
***IMPORTANT***: [There is currently no way to remove an incorrectly tagged version of a Go module](https://github.com/golang/go/issues/34189).
It is critical you make sure the version you push upstream is correct.
[Failure to do so will lead to minor emergencies and tough to work around](https://github.com/open-telemetry/opentelemetry-go/issues/331).
1. Run the tag.sh script using the `<commit-hash>` of the commit on the main branch for the merged Pull Request.
```
./tag.sh <new tag> <commit-hash>
```
2. Push tags to the upstream remote (not your fork: `github.com/open-telemetry/opentelemetry-go.git`).
Make sure you push all sub-modules as well.
```
git push upstream <new tag>
git push upstream <submodules-path/new tag>
...
```
## Release
Finally create a Release for the new `<new tag>` on GitHub.
The release body should include all the release notes from the Changelog for this release.
Additionally, the `tag.sh` script generates commit logs since last release which can be used to supplement the release notes.
## Verify Examples
After releasing verify that examples build outside of the repository.
```
./verify_examples.sh
```
The script copies examples into a different directory removes any `replace` declarations in `go.mod` and builds them.
This ensures they build with the published release, not the local copy.
## Contrib Repository
Once verified be sure to [make a release for the `contrib` repository](https://github.com/open-telemetry/opentelemetry-go-contrib/blob/main/RELEASING.md) that uses this release.

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# Versioning
This document describes the versioning policy for this repository. This policy
is designed so the following goals can be achieved.
**Users are provided a codebase of value that is stable and secure.**
## Policy
* Versioning of this project will be idiomatic of a Go project using [Go
modules](https://github.com/golang/go/wiki/Modules).
* [Semantic import
versioning](https://github.com/golang/go/wiki/Modules#semantic-import-versioning)
will be used.
* Versions will comply with [semver 2.0](https://semver.org/spec/v2.0.0.html).
* If a module is version `v2` or higher, the major version of the module
must be included as a `/vN` at the end of the module paths used in
`go.mod` files (e.g., `module go.opentelemetry.io/otel/v2`, `require
go.opentelemetry.io/otel/v2 v2.0.1`) and in the package import path
(e.g., `import "go.opentelemetry.io/otel/v2/trace"`). This includes the
paths used in `go get` commands (e.g., `go get
go.opentelemetry.io/otel/v2@v2.0.1`. Note there is both a `/v2` and a
`@v2.0.1` in that example. One way to think about it is that the module
name now includes the `/v2`, so include `/v2` whenever you are using the
module name).
* If a module is version `v0` or `v1`, do not include the major version in
either the module path or the import path.
* Modules will be used to encapsulate signals and components.
* Experimental modules still under active development will be versioned at
`v0` to imply the stability guarantee defined by
[semver](https://semver.org/spec/v2.0.0.html#spec-item-4).
> Major version zero (0.y.z) is for initial development. Anything MAY
> change at any time. The public API SHOULD NOT be considered stable.
* Mature modules for which we guarantee a stable public API will be versioned
with a major version greater than `v0`.
* The decision to make a module stable will be made on a case-by-case
basis by the maintainers of this project.
* Experimental modules will start their versioning at `v0.0.0` and will
increment their minor version when backwards incompatible changes are
released and increment their patch version when backwards compatible
changes are released.
* All stable modules that use the same major version number will use the
same entire version number.
* Stable modules may be released with an incremented minor or patch
version even though that module has not been changed, but rather so
that it will remain at the same version as other stable modules that
did undergo change.
* When an experimental module becomes stable a new stable module version
will be released and will include this now stable module. The new
stable module version will be an increment of the minor version number
and will be applied to all existing stable modules as well as the newly
stable module being released.
* Versioning of the associated [contrib
repository](https://github.com/open-telemetry/opentelemetry-go-contrib) of
this project will be idiomatic of a Go project using [Go
modules](https://github.com/golang/go/wiki/Modules).
* [Semantic import
versioning](https://github.com/golang/go/wiki/Modules#semantic-import-versioning)
will be used.
* Versions will comply with [semver 2.0](https://semver.org/spec/v2.0.0.html).
* If a module is version `v2` or higher, the
major version of the module must be included as a `/vN` at the end of the
module paths used in `go.mod` files (e.g., `module
go.opentelemetry.io/contrib/instrumentation/host/v2`, `require
go.opentelemetry.io/contrib/instrumentation/host/v2 v2.0.1`) and in the
package import path (e.g., `import
"go.opentelemetry.io/contrib/instrumentation/host/v2"`). This includes
the paths used in `go get` commands (e.g., `go get
go.opentelemetry.io/contrib/instrumentation/host/v2@v2.0.1`. Note there
is both a `/v2` and a `@v2.0.1` in that example. One way to think about
it is that the module name now includes the `/v2`, so include `/v2`
whenever you are using the module name).
* If a module is version `v0` or `v1`, do not include the major version
in either the module path or the import path.
* In addition to public APIs, telemetry produced by stable instrumentation
will remain stable and backwards compatible. This is to avoid breaking
alerts and dashboard.
* Modules will be used to encapsulate instrumentation, detectors, exporters,
propagators, and any other independent sets of related components.
* Experimental modules still under active development will be versioned at
`v0` to imply the stability guarantee defined by
[semver](https://semver.org/spec/v2.0.0.html#spec-item-4).
> Major version zero (0.y.z) is for initial development. Anything MAY
> change at any time. The public API SHOULD NOT be considered stable.
* Mature modules for which we guarantee a stable public API and telemetry will
be versioned with a major version greater than `v0`.
* Experimental modules will start their versioning at `v0.0.0` and will
increment their minor version when backwards incompatible changes are
released and increment their patch version when backwards compatible
changes are released.
* Stable contrib modules cannot depend on experimental modules from this
project.
* All stable contrib modules of the same major version with this project
will use the same entire version as this project.
* Stable modules may be released with an incremented minor or patch
version even though that module's code has not been changed. Instead
the only change that will have been included is to have updated that
modules dependency on this project's stable APIs.
* When an experimental module in contrib becomes stable a new stable
module version will be released and will include this now stable
module. The new stable module version will be an increment of the minor
version number and will be applied to all existing stable contrib
modules, this project's modules, and the newly stable module being
released.
* Contrib modules will be kept up to date with this project's releases.
* Due to the dependency contrib modules will implicitly have on this
project's modules the release of stable contrib modules to match the
released version number will be staggered after this project's release.
There is no explicit time guarantee for how long after this projects
release the contrib release will be. Effort should be made to keep them
as close in time as possible.
* No additional stable release in this project can be made until the
contrib repository has a matching stable release.
* No release can be made in the contrib repository after this project's
stable release except for a stable release of the contrib repository.
* GitHub releases will be made for all releases.
* Go modules will be made available at Go package mirrors.
## Example Versioning Lifecycle
To better understand the implementation of the above policy the following
example is provided. This project is simplified to include only the following
modules and their versions:
* `otel`: `v0.14.0`
* `otel/trace`: `v0.14.0`
* `otel/metric`: `v0.14.0`
* `otel/baggage`: `v0.14.0`
* `otel/sdk/trace`: `v0.14.0`
* `otel/sdk/metric`: `v0.14.0`
These modules have been developed to a point where the `otel/trace`,
`otel/baggage`, and `otel/sdk/trace` modules have reached a point that they
should be considered for a stable release. The `otel/metric` and
`otel/sdk/metric` are still under active development and the `otel` module
depends on both `otel/trace` and `otel/metric`.
The `otel` package is refactored to remove its dependencies on `otel/metric` so
it can be released as stable as well. With that done the following release
candidates are made:
* `otel`: `v1.0.0-rc.1`
* `otel/trace`: `v1.0.0-rc.1`
* `otel/baggage`: `v1.0.0-rc.1`
* `otel/sdk/trace`: `v1.0.0-rc.1`
The `otel/metric` and `otel/sdk/metric` modules remain at `v0.14.0`.
A few minor issues are discovered in the `otel/trace` package. These issues are
resolved with some minor, but backwards incompatible, changes and are released
as a second release candidate:
* `otel`: `v1.0.0-rc.2`
* `otel/trace`: `v1.0.0-rc.2`
* `otel/baggage`: `v1.0.0-rc.2`
* `otel/sdk/trace`: `v1.0.0-rc.2`
Notice that all module version numbers are incremented to adhere to our
versioning policy.
After these release candidates have been evaluated to satisfaction, they are
released as version `v1.0.0`.
* `otel`: `v1.0.0`
* `otel/trace`: `v1.0.0`
* `otel/baggage`: `v1.0.0`
* `otel/sdk/trace`: `v1.0.0`
Since both the `go` utility and the Go module system support [the semantic
versioning definition of
precedence](https://semver.org/spec/v2.0.0.html#spec-item-11), this release
will correctly be interpreted as the successor to the previous release
candidates.
Active development of this project continues. The `otel/metric` module now has
backwards incompatible changes to its API that need to be released and the
`otel/baggage` module has a minor bug fix that needs to be released. The
following release is made:
* `otel`: `v1.0.1`
* `otel/trace`: `v1.0.1`
* `otel/metric`: `v0.15.0`
* `otel/baggage`: `v1.0.1`
* `otel/sdk/trace`: `v1.0.1`
* `otel/sdk/metric`: `v0.15.0`
Notice that, again, all stable module versions are incremented in unison and
the `otel/sdk/metric` package, which depends on the `otel/metric` package, also
bumped its version. This bump of the `otel/sdk/metric` package makes sense
given their coupling, though it is not explicitly required by our versioning
policy.
As we progress, the `otel/metric` and `otel/sdk/metric` packages have reached a
point where they should be evaluated for stability. The `otel` module is
reintegrated with the `otel/metric` package and the following release is made:
* `otel`: `v1.1.0-rc.1`
* `otel/trace`: `v1.1.0-rc.1`
* `otel/metric`: `v1.1.0-rc.1`
* `otel/baggage`: `v1.1.0-rc.1`
* `otel/sdk/trace`: `v1.1.0-rc.1`
* `otel/sdk/metric`: `v1.1.0-rc.1`
All the modules are evaluated and determined to a viable stable release. They
are then released as version `v1.1.0` (the minor version is incremented to
indicate the addition of new signal).
* `otel`: `v1.1.0`
* `otel/trace`: `v1.1.0`
* `otel/metric`: `v1.1.0`
* `otel/baggage`: `v1.1.0`
* `otel/sdk/trace`: `v1.1.0`
* `otel/sdk/metric`: `v1.1.0`

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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// package attribute provides key and value attributes.
//
// This package is currently in a pre-GA phase. Backwards incompatible changes
// may be introduced in subsequent minor version releases as we work to track
// the evolving OpenTelemetry specification and user feedback.
package attribute // import "go.opentelemetry.io/otel/attribute"

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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package attribute // import "go.opentelemetry.io/otel/attribute"
import (
"bytes"
"sync"
"sync/atomic"
)
type (
// Encoder is a mechanism for serializing a label set into a
// specific string representation that supports caching, to
// avoid repeated serialization. An example could be an
// exporter encoding the label set into a wire representation.
Encoder interface {
// Encode returns the serialized encoding of the label
// set using its Iterator. This result may be cached
// by a attribute.Set.
Encode(iterator Iterator) string
// ID returns a value that is unique for each class of
// label encoder. Label encoders allocate these using
// `NewEncoderID`.
ID() EncoderID
}
// EncoderID is used to identify distinct Encoder
// implementations, for caching encoded results.
EncoderID struct {
value uint64
}
// defaultLabelEncoder uses a sync.Pool of buffers to reduce
// the number of allocations used in encoding labels. This
// implementation encodes a comma-separated list of key=value,
// with '/'-escaping of '=', ',', and '\'.
defaultLabelEncoder struct {
// pool is a pool of labelset builders. The buffers in this
// pool grow to a size that most label encodings will not
// allocate new memory.
pool sync.Pool // *bytes.Buffer
}
)
// escapeChar is used to ensure uniqueness of the label encoding where
// keys or values contain either '=' or ','. Since there is no parser
// needed for this encoding and its only requirement is to be unique,
// this choice is arbitrary. Users will see these in some exporters
// (e.g., stdout), so the backslash ('\') is used as a conventional choice.
const escapeChar = '\\'
var (
_ Encoder = &defaultLabelEncoder{}
// encoderIDCounter is for generating IDs for other label
// encoders.
encoderIDCounter uint64
defaultEncoderOnce sync.Once
defaultEncoderID = NewEncoderID()
defaultEncoderInstance *defaultLabelEncoder
)
// NewEncoderID returns a unique label encoder ID. It should be
// called once per each type of label encoder. Preferably in init() or
// in var definition.
func NewEncoderID() EncoderID {
return EncoderID{value: atomic.AddUint64(&encoderIDCounter, 1)}
}
// DefaultEncoder returns a label encoder that encodes labels
// in such a way that each escaped label's key is followed by an equal
// sign and then by an escaped label's value. All key-value pairs are
// separated by a comma.
//
// Escaping is done by prepending a backslash before either a
// backslash, equal sign or a comma.
func DefaultEncoder() Encoder {
defaultEncoderOnce.Do(func() {
defaultEncoderInstance = &defaultLabelEncoder{
pool: sync.Pool{
New: func() interface{} {
return &bytes.Buffer{}
},
},
}
})
return defaultEncoderInstance
}
// Encode is a part of an implementation of the LabelEncoder
// interface.
func (d *defaultLabelEncoder) Encode(iter Iterator) string {
buf := d.pool.Get().(*bytes.Buffer)
defer d.pool.Put(buf)
buf.Reset()
for iter.Next() {
i, keyValue := iter.IndexedLabel()
if i > 0 {
_, _ = buf.WriteRune(',')
}
copyAndEscape(buf, string(keyValue.Key))
_, _ = buf.WriteRune('=')
if keyValue.Value.Type() == STRING {
copyAndEscape(buf, keyValue.Value.AsString())
} else {
_, _ = buf.WriteString(keyValue.Value.Emit())
}
}
return buf.String()
}
// ID is a part of an implementation of the LabelEncoder interface.
func (*defaultLabelEncoder) ID() EncoderID {
return defaultEncoderID
}
// copyAndEscape escapes `=`, `,` and its own escape character (`\`),
// making the default encoding unique.
func copyAndEscape(buf *bytes.Buffer, val string) {
for _, ch := range val {
switch ch {
case '=', ',', escapeChar:
buf.WriteRune(escapeChar)
}
buf.WriteRune(ch)
}
}
// Valid returns true if this encoder ID was allocated by
// `NewEncoderID`. Invalid encoder IDs will not be cached.
func (id EncoderID) Valid() bool {
return id.value != 0
}

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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package attribute // import "go.opentelemetry.io/otel/attribute"
// Iterator allows iterating over the set of labels in order,
// sorted by key.
type Iterator struct {
storage *Set
idx int
}
// MergeIterator supports iterating over two sets of labels while
// eliminating duplicate values from the combined set. The first
// iterator value takes precedence.
type MergeIterator struct {
one oneIterator
two oneIterator
current KeyValue
}
type oneIterator struct {
iter Iterator
done bool
label KeyValue
}
// Next moves the iterator to the next position. Returns false if there
// are no more labels.
func (i *Iterator) Next() bool {
i.idx++
return i.idx < i.Len()
}
// Label returns current KeyValue. Must be called only after Next returns
// true.
func (i *Iterator) Label() KeyValue {
kv, _ := i.storage.Get(i.idx)
return kv
}
// Attribute is a synonym for Label().
func (i *Iterator) Attribute() KeyValue {
return i.Label()
}
// IndexedLabel returns current index and attribute. Must be called only
// after Next returns true.
func (i *Iterator) IndexedLabel() (int, KeyValue) {
return i.idx, i.Label()
}
// Len returns a number of labels in the iterator's `*Set`.
func (i *Iterator) Len() int {
return i.storage.Len()
}
// ToSlice is a convenience function that creates a slice of labels
// from the passed iterator. The iterator is set up to start from the
// beginning before creating the slice.
func (i *Iterator) ToSlice() []KeyValue {
l := i.Len()
if l == 0 {
return nil
}
i.idx = -1
slice := make([]KeyValue, 0, l)
for i.Next() {
slice = append(slice, i.Label())
}
return slice
}
// NewMergeIterator returns a MergeIterator for merging two label sets
// Duplicates are resolved by taking the value from the first set.
func NewMergeIterator(s1, s2 *Set) MergeIterator {
mi := MergeIterator{
one: makeOne(s1.Iter()),
two: makeOne(s2.Iter()),
}
return mi
}
func makeOne(iter Iterator) oneIterator {
oi := oneIterator{
iter: iter,
}
oi.advance()
return oi
}
func (oi *oneIterator) advance() {
if oi.done = !oi.iter.Next(); !oi.done {
oi.label = oi.iter.Label()
}
}
// Next returns true if there is another label available.
func (m *MergeIterator) Next() bool {
if m.one.done && m.two.done {
return false
}
if m.one.done {
m.current = m.two.label
m.two.advance()
return true
}
if m.two.done {
m.current = m.one.label
m.one.advance()
return true
}
if m.one.label.Key == m.two.label.Key {
m.current = m.one.label // first iterator label value wins
m.one.advance()
m.two.advance()
return true
}
if m.one.label.Key < m.two.label.Key {
m.current = m.one.label
m.one.advance()
return true
}
m.current = m.two.label
m.two.advance()
return true
}
// Label returns the current value after Next() returns true.
func (m *MergeIterator) Label() KeyValue {
return m.current
}

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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package attribute // import "go.opentelemetry.io/otel/attribute"
// Key represents the key part in key-value pairs. It's a string. The
// allowed character set in the key depends on the use of the key.
type Key string
// Bool creates a KeyValue instance with a BOOL Value.
//
// If creating both key and a bool value at the same time, then
// instead of calling Key(name).Bool(value) consider using a
// convenience function provided by the api/key package -
// key.Bool(name, value).
func (k Key) Bool(v bool) KeyValue {
return KeyValue{
Key: k,
Value: BoolValue(v),
}
}
// Int64 creates a KeyValue instance with an INT64 Value.
//
// If creating both key and an int64 value at the same time, then
// instead of calling Key(name).Int64(value) consider using a
// convenience function provided by the api/key package -
// key.Int64(name, value).
func (k Key) Int64(v int64) KeyValue {
return KeyValue{
Key: k,
Value: Int64Value(v),
}
}
// Float64 creates a KeyValue instance with a FLOAT64 Value.
//
// If creating both key and a float64 value at the same time, then
// instead of calling Key(name).Float64(value) consider using a
// convenience function provided by the api/key package -
// key.Float64(name, value).
func (k Key) Float64(v float64) KeyValue {
return KeyValue{
Key: k,
Value: Float64Value(v),
}
}
// String creates a KeyValue instance with a STRING Value.
//
// If creating both key and a string value at the same time, then
// instead of calling Key(name).String(value) consider using a
// convenience function provided by the api/key package -
// key.String(name, value).
func (k Key) String(v string) KeyValue {
return KeyValue{
Key: k,
Value: StringValue(v),
}
}
// Int creates a KeyValue instance with an INT64 Value.
//
// If creating both key and an int value at the same time, then
// instead of calling Key(name).Int(value) consider using a
// convenience function provided by the api/key package -
// key.Int(name, value).
func (k Key) Int(v int) KeyValue {
return KeyValue{
Key: k,
Value: IntValue(v),
}
}
// Defined returns true for non-empty keys.
func (k Key) Defined() bool {
return len(k) != 0
}
// Array creates a KeyValue instance with a ARRAY Value.
//
// If creating both key and a array value at the same time, then
// instead of calling Key(name).String(value) consider using a
// convenience function provided by the api/key package -
// key.Array(name, value).
func (k Key) Array(v interface{}) KeyValue {
return KeyValue{
Key: k,
Value: ArrayValue(v),
}
}

108
vendor/go.opentelemetry.io/otel/attribute/kv.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package attribute // import "go.opentelemetry.io/otel/attribute"
import (
"encoding/json"
"fmt"
"reflect"
)
// KeyValue holds a key and value pair.
type KeyValue struct {
Key Key
Value Value
}
// Valid returns if kv is a valid OpenTelemetry attribute.
func (kv KeyValue) Valid() bool {
return kv.Key != "" && kv.Value.Type() != INVALID
}
// Bool creates a new key-value pair with a passed name and a bool
// value.
func Bool(k string, v bool) KeyValue {
return Key(k).Bool(v)
}
// Int64 creates a new key-value pair with a passed name and an int64
// value.
func Int64(k string, v int64) KeyValue {
return Key(k).Int64(v)
}
// Float64 creates a new key-value pair with a passed name and a float64
// value.
func Float64(k string, v float64) KeyValue {
return Key(k).Float64(v)
}
// String creates a new key-value pair with a passed name and a string
// value.
func String(k, v string) KeyValue {
return Key(k).String(v)
}
// Stringer creates a new key-value pair with a passed name and a string
// value generated by the passed Stringer interface.
func Stringer(k string, v fmt.Stringer) KeyValue {
return Key(k).String(v.String())
}
// Int creates a new key-value pair instance with a passed name and
// either an int32 or an int64 value, depending on whether the int
// type is 32 or 64 bits wide.
func Int(k string, v int) KeyValue {
return Key(k).Int(v)
}
// Array creates a new key-value pair with a passed name and a array.
// Only arrays of primitive type are supported.
func Array(k string, v interface{}) KeyValue {
return Key(k).Array(v)
}
// Any creates a new key-value pair instance with a passed name and
// automatic type inference. This is slower, and not type-safe.
func Any(k string, value interface{}) KeyValue {
if value == nil {
return String(k, "<nil>")
}
if stringer, ok := value.(fmt.Stringer); ok {
return String(k, stringer.String())
}
rv := reflect.ValueOf(value)
switch rv.Kind() {
case reflect.Array, reflect.Slice:
return Array(k, value)
case reflect.Bool:
return Bool(k, rv.Bool())
case reflect.Int, reflect.Int8, reflect.Int16:
return Int(k, int(rv.Int()))
case reflect.Int64:
return Int64(k, rv.Int())
case reflect.Float64:
return Float64(k, rv.Float())
case reflect.String:
return String(k, rv.String())
}
if b, err := json.Marshal(value); b != nil && err == nil {
return String(k, string(b))
}
return String(k, fmt.Sprint(value))
}

471
vendor/go.opentelemetry.io/otel/attribute/set.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package attribute // import "go.opentelemetry.io/otel/attribute"
import (
"encoding/json"
"reflect"
"sort"
"sync"
)
type (
// Set is the representation for a distinct label set. It
// manages an immutable set of labels, with an internal cache
// for storing label encodings.
//
// This type supports the `Equivalent` method of comparison
// using values of type `Distinct`.
//
// This type is used to implement:
// 1. Metric labels
// 2. Resource sets
// 3. Correlation map (TODO)
Set struct {
equivalent Distinct
lock sync.Mutex
encoders [maxConcurrentEncoders]EncoderID
encoded [maxConcurrentEncoders]string
}
// Distinct wraps a variable-size array of `KeyValue`,
// constructed with keys in sorted order. This can be used as
// a map key or for equality checking between Sets.
Distinct struct {
iface interface{}
}
// Filter supports removing certain labels from label sets.
// When the filter returns true, the label will be kept in
// the filtered label set. When the filter returns false, the
// label is excluded from the filtered label set, and the
// label instead appears in the `removed` list of excluded labels.
Filter func(KeyValue) bool
// Sortable implements `sort.Interface`, used for sorting
// `KeyValue`. This is an exported type to support a
// memory optimization. A pointer to one of these is needed
// for the call to `sort.Stable()`, which the caller may
// provide in order to avoid an allocation. See
// `NewSetWithSortable()`.
Sortable []KeyValue
)
var (
// keyValueType is used in `computeDistinctReflect`.
keyValueType = reflect.TypeOf(KeyValue{})
// emptySet is returned for empty label sets.
emptySet = &Set{
equivalent: Distinct{
iface: [0]KeyValue{},
},
}
)
const maxConcurrentEncoders = 3
// EmptySet returns a reference to a Set with no elements.
//
// This is a convenience provided for optimized calling utility.
func EmptySet() *Set {
return emptySet
}
// reflect abbreviates `reflect.ValueOf`.
func (d Distinct) reflect() reflect.Value {
return reflect.ValueOf(d.iface)
}
// Valid returns true if this value refers to a valid `*Set`.
func (d Distinct) Valid() bool {
return d.iface != nil
}
// Len returns the number of labels in this set.
func (l *Set) Len() int {
if l == nil || !l.equivalent.Valid() {
return 0
}
return l.equivalent.reflect().Len()
}
// Get returns the KeyValue at ordered position `idx` in this set.
func (l *Set) Get(idx int) (KeyValue, bool) {
if l == nil {
return KeyValue{}, false
}
value := l.equivalent.reflect()
if idx >= 0 && idx < value.Len() {
// Note: The Go compiler successfully avoids an allocation for
// the interface{} conversion here:
return value.Index(idx).Interface().(KeyValue), true
}
return KeyValue{}, false
}
// Value returns the value of a specified key in this set.
func (l *Set) Value(k Key) (Value, bool) {
if l == nil {
return Value{}, false
}
rValue := l.equivalent.reflect()
vlen := rValue.Len()
idx := sort.Search(vlen, func(idx int) bool {
return rValue.Index(idx).Interface().(KeyValue).Key >= k
})
if idx >= vlen {
return Value{}, false
}
keyValue := rValue.Index(idx).Interface().(KeyValue)
if k == keyValue.Key {
return keyValue.Value, true
}
return Value{}, false
}
// HasValue tests whether a key is defined in this set.
func (l *Set) HasValue(k Key) bool {
if l == nil {
return false
}
_, ok := l.Value(k)
return ok
}
// Iter returns an iterator for visiting the labels in this set.
func (l *Set) Iter() Iterator {
return Iterator{
storage: l,
idx: -1,
}
}
// ToSlice returns the set of labels belonging to this set, sorted,
// where keys appear no more than once.
func (l *Set) ToSlice() []KeyValue {
iter := l.Iter()
return iter.ToSlice()
}
// Equivalent returns a value that may be used as a map key. The
// Distinct type guarantees that the result will equal the equivalent
// Distinct value of any label set with the same elements as this,
// where sets are made unique by choosing the last value in the input
// for any given key.
func (l *Set) Equivalent() Distinct {
if l == nil || !l.equivalent.Valid() {
return emptySet.equivalent
}
return l.equivalent
}
// Equals returns true if the argument set is equivalent to this set.
func (l *Set) Equals(o *Set) bool {
return l.Equivalent() == o.Equivalent()
}
// Encoded returns the encoded form of this set, according to
// `encoder`. The result will be cached in this `*Set`.
func (l *Set) Encoded(encoder Encoder) string {
if l == nil || encoder == nil {
return ""
}
id := encoder.ID()
if !id.Valid() {
// Invalid IDs are not cached.
return encoder.Encode(l.Iter())
}
var lookup *string
l.lock.Lock()
for idx := 0; idx < maxConcurrentEncoders; idx++ {
if l.encoders[idx] == id {
lookup = &l.encoded[idx]
break
}
}
l.lock.Unlock()
if lookup != nil {
return *lookup
}
r := encoder.Encode(l.Iter())
l.lock.Lock()
defer l.lock.Unlock()
for idx := 0; idx < maxConcurrentEncoders; idx++ {
if l.encoders[idx] == id {
return l.encoded[idx]
}
if !l.encoders[idx].Valid() {
l.encoders[idx] = id
l.encoded[idx] = r
return r
}
}
// TODO: This is a performance cliff. Find a way for this to
// generate a warning.
return r
}
func empty() Set {
return Set{
equivalent: emptySet.equivalent,
}
}
// NewSet returns a new `Set`. See the documentation for
// `NewSetWithSortableFiltered` for more details.
//
// Except for empty sets, this method adds an additional allocation
// compared with calls that include a `*Sortable`.
func NewSet(kvs ...KeyValue) Set {
// Check for empty set.
if len(kvs) == 0 {
return empty()
}
s, _ := NewSetWithSortableFiltered(kvs, new(Sortable), nil)
return s //nolint
}
// NewSetWithSortable returns a new `Set`. See the documentation for
// `NewSetWithSortableFiltered` for more details.
//
// This call includes a `*Sortable` option as a memory optimization.
func NewSetWithSortable(kvs []KeyValue, tmp *Sortable) Set {
// Check for empty set.
if len(kvs) == 0 {
return empty()
}
s, _ := NewSetWithSortableFiltered(kvs, tmp, nil)
return s //nolint
}
// NewSetWithFiltered returns a new `Set`. See the documentation for
// `NewSetWithSortableFiltered` for more details.
//
// This call includes a `Filter` to include/exclude label keys from
// the return value. Excluded keys are returned as a slice of label
// values.
func NewSetWithFiltered(kvs []KeyValue, filter Filter) (Set, []KeyValue) {
// Check for empty set.
if len(kvs) == 0 {
return empty(), nil
}
return NewSetWithSortableFiltered(kvs, new(Sortable), filter)
}
// NewSetWithSortableFiltered returns a new `Set`.
//
// Duplicate keys are eliminated by taking the last value. This
// re-orders the input slice so that unique last-values are contiguous
// at the end of the slice.
//
// This ensures the following:
//
// - Last-value-wins semantics
// - Caller sees the reordering, but doesn't lose values
// - Repeated call preserve last-value wins.
//
// Note that methods are defined on `*Set`, although this returns `Set`.
// Callers can avoid memory allocations by:
//
// - allocating a `Sortable` for use as a temporary in this method
// - allocating a `Set` for storing the return value of this
// constructor.
//
// The result maintains a cache of encoded labels, by attribute.EncoderID.
// This value should not be copied after its first use.
//
// The second `[]KeyValue` return value is a list of labels that were
// excluded by the Filter (if non-nil).
func NewSetWithSortableFiltered(kvs []KeyValue, tmp *Sortable, filter Filter) (Set, []KeyValue) {
// Check for empty set.
if len(kvs) == 0 {
return empty(), nil
}
*tmp = kvs
// Stable sort so the following de-duplication can implement
// last-value-wins semantics.
sort.Stable(tmp)
*tmp = nil
position := len(kvs) - 1
offset := position - 1
// The requirements stated above require that the stable
// result be placed in the end of the input slice, while
// overwritten values are swapped to the beginning.
//
// De-duplicate with last-value-wins semantics. Preserve
// duplicate values at the beginning of the input slice.
for ; offset >= 0; offset-- {
if kvs[offset].Key == kvs[position].Key {
continue
}
position--
kvs[offset], kvs[position] = kvs[position], kvs[offset]
}
if filter != nil {
return filterSet(kvs[position:], filter)
}
return Set{
equivalent: computeDistinct(kvs[position:]),
}, nil
}
// filterSet reorders `kvs` so that included keys are contiguous at
// the end of the slice, while excluded keys precede the included keys.
func filterSet(kvs []KeyValue, filter Filter) (Set, []KeyValue) {
var excluded []KeyValue
// Move labels that do not match the filter so
// they're adjacent before calling computeDistinct().
distinctPosition := len(kvs)
// Swap indistinct keys forward and distinct keys toward the
// end of the slice.
offset := len(kvs) - 1
for ; offset >= 0; offset-- {
if filter(kvs[offset]) {
distinctPosition--
kvs[offset], kvs[distinctPosition] = kvs[distinctPosition], kvs[offset]
continue
}
}
excluded = kvs[:distinctPosition]
return Set{
equivalent: computeDistinct(kvs[distinctPosition:]),
}, excluded
}
// Filter returns a filtered copy of this `Set`. See the
// documentation for `NewSetWithSortableFiltered` for more details.
func (l *Set) Filter(re Filter) (Set, []KeyValue) {
if re == nil {
return Set{
equivalent: l.equivalent,
}, nil
}
// Note: This could be refactored to avoid the temporary slice
// allocation, if it proves to be expensive.
return filterSet(l.ToSlice(), re)
}
// computeDistinct returns a `Distinct` using either the fixed- or
// reflect-oriented code path, depending on the size of the input.
// The input slice is assumed to already be sorted and de-duplicated.
func computeDistinct(kvs []KeyValue) Distinct {
iface := computeDistinctFixed(kvs)
if iface == nil {
iface = computeDistinctReflect(kvs)
}
return Distinct{
iface: iface,
}
}
// computeDistinctFixed computes a `Distinct` for small slices. It
// returns nil if the input is too large for this code path.
func computeDistinctFixed(kvs []KeyValue) interface{} {
switch len(kvs) {
case 1:
ptr := new([1]KeyValue)
copy((*ptr)[:], kvs)
return *ptr
case 2:
ptr := new([2]KeyValue)
copy((*ptr)[:], kvs)
return *ptr
case 3:
ptr := new([3]KeyValue)
copy((*ptr)[:], kvs)
return *ptr
case 4:
ptr := new([4]KeyValue)
copy((*ptr)[:], kvs)
return *ptr
case 5:
ptr := new([5]KeyValue)
copy((*ptr)[:], kvs)
return *ptr
case 6:
ptr := new([6]KeyValue)
copy((*ptr)[:], kvs)
return *ptr
case 7:
ptr := new([7]KeyValue)
copy((*ptr)[:], kvs)
return *ptr
case 8:
ptr := new([8]KeyValue)
copy((*ptr)[:], kvs)
return *ptr
case 9:
ptr := new([9]KeyValue)
copy((*ptr)[:], kvs)
return *ptr
case 10:
ptr := new([10]KeyValue)
copy((*ptr)[:], kvs)
return *ptr
default:
return nil
}
}
// computeDistinctReflect computes a `Distinct` using reflection,
// works for any size input.
func computeDistinctReflect(kvs []KeyValue) interface{} {
at := reflect.New(reflect.ArrayOf(len(kvs), keyValueType)).Elem()
for i, keyValue := range kvs {
*(at.Index(i).Addr().Interface().(*KeyValue)) = keyValue
}
return at.Interface()
}
// MarshalJSON returns the JSON encoding of the `*Set`.
func (l *Set) MarshalJSON() ([]byte, error) {
return json.Marshal(l.equivalent.iface)
}
// Len implements `sort.Interface`.
func (l *Sortable) Len() int {
return len(*l)
}
// Swap implements `sort.Interface`.
func (l *Sortable) Swap(i, j int) {
(*l)[i], (*l)[j] = (*l)[j], (*l)[i]
}
// Less implements `sort.Interface`.
func (l *Sortable) Less(i, j int) bool {
return (*l)[i].Key < (*l)[j].Key
}

28
vendor/go.opentelemetry.io/otel/attribute/type_string.go generated vendored Normal file
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// Code generated by "stringer -type=Type"; DO NOT EDIT.
package attribute
import "strconv"
func _() {
// An "invalid array index" compiler error signifies that the constant values have changed.
// Re-run the stringer command to generate them again.
var x [1]struct{}
_ = x[INVALID-0]
_ = x[BOOL-1]
_ = x[INT64-2]
_ = x[FLOAT64-3]
_ = x[STRING-4]
_ = x[ARRAY-5]
}
const _Type_name = "INVALIDBOOLINT64FLOAT64STRINGARRAY"
var _Type_index = [...]uint8{0, 7, 11, 16, 23, 29, 34}
func (i Type) String() string {
if i < 0 || i >= Type(len(_Type_index)-1) {
return "Type(" + strconv.FormatInt(int64(i), 10) + ")"
}
return _Type_name[_Type_index[i]:_Type_index[i+1]]
}

204
vendor/go.opentelemetry.io/otel/attribute/value.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package attribute // import "go.opentelemetry.io/otel/attribute"
import (
"encoding/json"
"fmt"
"reflect"
"strconv"
"go.opentelemetry.io/otel/internal"
)
//go:generate stringer -type=Type
// Type describes the type of the data Value holds.
type Type int
// Value represents the value part in key-value pairs.
type Value struct {
vtype Type
numeric uint64
stringly string
// TODO Lazy value type?
array interface{}
}
const (
// INVALID is used for a Value with no value set.
INVALID Type = iota
// BOOL is a boolean Type Value.
BOOL
// INT64 is a 64-bit signed integral Type Value.
INT64
// FLOAT64 is a 64-bit floating point Type Value.
FLOAT64
// STRING is a string Type Value.
STRING
// ARRAY is an array Type Value used to store 1-dimensional slices or
// arrays of bool, int, int32, int64, uint, uint32, uint64, float,
// float32, float64, or string types.
ARRAY
)
// BoolValue creates a BOOL Value.
func BoolValue(v bool) Value {
return Value{
vtype: BOOL,
numeric: internal.BoolToRaw(v),
}
}
// Int64Value creates an INT64 Value.
func Int64Value(v int64) Value {
return Value{
vtype: INT64,
numeric: internal.Int64ToRaw(v),
}
}
// Float64Value creates a FLOAT64 Value.
func Float64Value(v float64) Value {
return Value{
vtype: FLOAT64,
numeric: internal.Float64ToRaw(v),
}
}
// StringValue creates a STRING Value.
func StringValue(v string) Value {
return Value{
vtype: STRING,
stringly: v,
}
}
// IntValue creates an INT64 Value.
func IntValue(v int) Value {
return Int64Value(int64(v))
}
// ArrayValue creates an ARRAY value from an array or slice.
// Only arrays or slices of bool, int, int64, float, float64, or string types are allowed.
// Specifically, arrays and slices can not contain other arrays, slices, structs, or non-standard
// types. If the passed value is not an array or slice of these types an
// INVALID value is returned.
func ArrayValue(v interface{}) Value {
switch reflect.TypeOf(v).Kind() {
case reflect.Array, reflect.Slice:
// get array type regardless of dimensions
typ := reflect.TypeOf(v).Elem()
kind := typ.Kind()
switch kind {
case reflect.Bool, reflect.Int, reflect.Int64,
reflect.Float64, reflect.String:
val := reflect.ValueOf(v)
length := val.Len()
frozen := reflect.Indirect(reflect.New(reflect.ArrayOf(length, typ)))
reflect.Copy(frozen, val)
return Value{
vtype: ARRAY,
array: frozen.Interface(),
}
default:
return Value{vtype: INVALID}
}
}
return Value{vtype: INVALID}
}
// Type returns a type of the Value.
func (v Value) Type() Type {
return v.vtype
}
// AsBool returns the bool value. Make sure that the Value's type is
// BOOL.
func (v Value) AsBool() bool {
return internal.RawToBool(v.numeric)
}
// AsInt64 returns the int64 value. Make sure that the Value's type is
// INT64.
func (v Value) AsInt64() int64 {
return internal.RawToInt64(v.numeric)
}
// AsFloat64 returns the float64 value. Make sure that the Value's
// type is FLOAT64.
func (v Value) AsFloat64() float64 {
return internal.RawToFloat64(v.numeric)
}
// AsString returns the string value. Make sure that the Value's type
// is STRING.
func (v Value) AsString() string {
return v.stringly
}
// AsArray returns the array Value as an interface{}.
func (v Value) AsArray() interface{} {
return v.array
}
type unknownValueType struct{}
// AsInterface returns Value's data as interface{}.
func (v Value) AsInterface() interface{} {
switch v.Type() {
case ARRAY:
return v.AsArray()
case BOOL:
return v.AsBool()
case INT64:
return v.AsInt64()
case FLOAT64:
return v.AsFloat64()
case STRING:
return v.stringly
}
return unknownValueType{}
}
// Emit returns a string representation of Value's data.
func (v Value) Emit() string {
switch v.Type() {
case ARRAY:
return fmt.Sprint(v.array)
case BOOL:
return strconv.FormatBool(v.AsBool())
case INT64:
return strconv.FormatInt(v.AsInt64(), 10)
case FLOAT64:
return fmt.Sprint(v.AsFloat64())
case STRING:
return v.stringly
default:
return "unknown"
}
}
// MarshalJSON returns the JSON encoding of the Value.
func (v Value) MarshalJSON() ([]byte, error) {
var jsonVal struct {
Type string
Value interface{}
}
jsonVal.Type = v.Type().String()
jsonVal.Value = v.AsInterface()
return json.Marshal(jsonVal)
}

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vendor/go.opentelemetry.io/otel/codes/codes.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package codes // import "go.opentelemetry.io/otel/codes"
import (
"encoding/json"
"fmt"
"strconv"
)
const (
// Unset is the default status code.
Unset Code = 0
// Error indicates the operation contains an error.
Error Code = 1
// Ok indicates operation has been validated by an Application developers
// or Operator to have completed successfully, or contain no error.
Ok Code = 2
maxCode = 3
)
// Code is an 32-bit representation of a status state.
type Code uint32
var codeToStr = map[Code]string{
Unset: "Unset",
Error: "Error",
Ok: "Ok",
}
var strToCode = map[string]Code{
`"Unset"`: Unset,
`"Error"`: Error,
`"Ok"`: Ok,
}
// String returns the Code as a string.
func (c Code) String() string {
return codeToStr[c]
}
// UnmarshalJSON unmarshals b into the Code.
//
// This is based on the functionality in the gRPC codes package:
// https://github.com/grpc/grpc-go/blob/bb64fee312b46ebee26be43364a7a966033521b1/codes/codes.go#L218-L244
func (c *Code) UnmarshalJSON(b []byte) error {
// From json.Unmarshaler: By convention, to approximate the behavior of
// Unmarshal itself, Unmarshalers implement UnmarshalJSON([]byte("null")) as
// a no-op.
if string(b) == "null" {
return nil
}
if c == nil {
return fmt.Errorf("nil receiver passed to UnmarshalJSON")
}
var x interface{}
if err := json.Unmarshal(b, &x); err != nil {
return err
}
switch x.(type) {
case string:
if jc, ok := strToCode[string(b)]; ok {
*c = jc
return nil
}
return fmt.Errorf("invalid code: %q", string(b))
case float64:
if ci, err := strconv.ParseUint(string(b), 10, 32); err == nil {
if ci >= maxCode {
return fmt.Errorf("invalid code: %q", ci)
}
*c = Code(ci)
return nil
}
return fmt.Errorf("invalid code: %q", string(b))
default:
return fmt.Errorf("invalid code: %q", string(b))
}
}
// MarshalJSON returns c as the JSON encoding of c.
func (c *Code) MarshalJSON() ([]byte, error) {
if c == nil {
return []byte("null"), nil
}
str, ok := codeToStr[*c]
if !ok {
return nil, fmt.Errorf("invalid code: %d", *c)
}
return []byte(fmt.Sprintf("%q", str)), nil
}

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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/*
Package codes defines the canonical error codes used by OpenTelemetry.
This package is currently in a pre-GA phase. Backwards incompatible changes
may be introduced in subsequent minor version releases as we work to track
the evolving OpenTelemetry specification and user feedback.
It conforms to [the OpenTelemetry
specification](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/trace/api.md#statuscanonicalcode).
*/
package codes // import "go.opentelemetry.io/otel/codes"

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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/*
Package otel provides global access to the OpenTelemetry API. The subpackages of
the otel package provide an implementation of the OpenTelemetry API.
This package is currently in a pre-GA phase. Backwards incompatible changes
may be introduced in subsequent minor version releases as we work to track the
evolving OpenTelemetry specification and user feedback.
The provided API is used to instrument code and measure data about that code's
performance and operation. The measured data, by default, is not processed or
transmitted anywhere. An implementation of the OpenTelemetry SDK, like the
default SDK implementation (go.opentelemetry.io/otel/sdk), and associated
exporters are used to process and transport this data.
To read the getting started guide, see https://opentelemetry.io/docs/go/getting-started/.
To read more about tracing, see go.opentelemetry.io/otel/trace.
To read more about metrics, see go.opentelemetry.io/otel/metric.
To read more about propagation, see go.opentelemetry.io/otel/propagation and
go.opentelemetry.io/otel/baggage.
*/
package otel // import "go.opentelemetry.io/otel"

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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package otel // import "go.opentelemetry.io/otel"
// ErrorHandler handles irremediable events.
type ErrorHandler interface {
// Handle handles any error deemed irremediable by an OpenTelemetry
// component.
Handle(error)
}

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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
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APPENDIX: How to apply the Apache License to your work.
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Unless required by applicable law or agreed to in writing, software
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
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# OpenTelemetry Collector Go Exporter
[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel/exporters/otlp)](https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp)
This exporter exports OpenTelemetry spans and metrics to the OpenTelemetry Collector.
## Installation and Setup
The exporter can be installed using standard `go` functionality.
```bash
$ go get -u go.opentelemetry.io/otel/exporters/otlp
```
A new exporter can be created using the `NewExporter` function.
## Retries
The exporter will not, by default, retry failed requests to the collector.
However, it is configured in a way that it can be easily enabled.
To enable retries, the `GRPC_GO_RETRY` environment variable needs to be set to `on`. For example,
```
GRPC_GO_RETRY=on go run .
```
The [default service config](https://github.com/grpc/proposal/blob/master/A6-client-retries.md) used by default is defined to retry failed requests with exponential backoff (`0.3seconds * (2)^retry`) with [a max of `5` retries](https://github.com/open-telemetry/oteps/blob/be2a3fcbaa417ebbf5845cd485d34fdf0ab4a2a4/text/0035-opentelemetry-protocol.md#export-response)).
These retries are only attempted for reponses that are [deemed "retry-able" by the collector](https://github.com/grpc/proposal/blob/master/A6-client-retries.md#validation-of-retrypolicy).

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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package otlp contains an exporter for the OpenTelemetry protocol buffers.
//
// This package is currently in a pre-GA phase. Backwards incompatible changes
// may be introduced in subsequent minor version releases as we work to track
// the evolving OpenTelemetry specification and user feedback.
package otlp // import "go.opentelemetry.io/otel/exporters/otlp"

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module go.opentelemetry.io/otel/exporters/otlp
go 1.14
replace (
go.opentelemetry.io/otel => ../..
go.opentelemetry.io/otel/sdk => ../../sdk
)
require (
github.com/google/go-cmp v0.5.5
github.com/stretchr/testify v1.7.0
go.opentelemetry.io/otel v0.20.0
go.opentelemetry.io/otel/metric v0.20.0
go.opentelemetry.io/otel/sdk v0.20.0
go.opentelemetry.io/otel/sdk/export/metric v0.20.0
go.opentelemetry.io/otel/sdk/metric v0.20.0
go.opentelemetry.io/otel/trace v0.20.0
go.opentelemetry.io/proto/otlp v0.7.0
google.golang.org/grpc v1.37.0
google.golang.org/protobuf v1.26.0
)
replace go.opentelemetry.io/otel/bridge/opencensus => ../../bridge/opencensus
replace go.opentelemetry.io/otel/bridge/opentracing => ../../bridge/opentracing
replace go.opentelemetry.io/otel/example/jaeger => ../../example/jaeger
replace go.opentelemetry.io/otel/example/namedtracer => ../../example/namedtracer
replace go.opentelemetry.io/otel/example/opencensus => ../../example/opencensus
replace go.opentelemetry.io/otel/example/otel-collector => ../../example/otel-collector
replace go.opentelemetry.io/otel/example/prom-collector => ../../example/prom-collector
replace go.opentelemetry.io/otel/example/prometheus => ../../example/prometheus
replace go.opentelemetry.io/otel/example/zipkin => ../../example/zipkin
replace go.opentelemetry.io/otel/exporters/metric/prometheus => ../metric/prometheus
replace go.opentelemetry.io/otel/exporters/otlp => ./
replace go.opentelemetry.io/otel/exporters/stdout => ../stdout
replace go.opentelemetry.io/otel/exporters/trace/jaeger => ../trace/jaeger
replace go.opentelemetry.io/otel/exporters/trace/zipkin => ../trace/zipkin
replace go.opentelemetry.io/otel/internal/tools => ../../internal/tools
replace go.opentelemetry.io/otel/metric => ../../metric
replace go.opentelemetry.io/otel/oteltest => ../../oteltest
replace go.opentelemetry.io/otel/sdk/export/metric => ../../sdk/export/metric
replace go.opentelemetry.io/otel/sdk/metric => ../../sdk/metric
replace go.opentelemetry.io/otel/trace => ../../trace

123
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@ -0,0 +1,123 @@
cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
github.com/benbjohnson/clock v1.0.3 h1:vkLuvpK4fmtSCuo60+yC63p7y0BmQ8gm5ZXGuBCJyXg=
github.com/benbjohnson/clock v1.0.3/go.mod h1:bGMdMPoPVvcYyt1gHDf4J2KE153Yf9BuiUKYMaxlTDM=
github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
github.com/envoyproxy/go-control-plane v0.9.9-0.20201210154907-fd9021fe5dad/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk=
github.com/envoyproxy/go-control-plane v0.9.9-0.20210217033140-668b12f5399d/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk=
github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.3/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw=
github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=
github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w=
github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8=
github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
github.com/golang/protobuf v1.5.0 h1:LUVKkCeviFUMKqHa4tXIIij/lbhnMbP7Fn5wKdKkRh4=
github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
github.com/grpc-ecosystem/grpc-gateway v1.16.0 h1:gmcG1KaJ57LophUzW0Hy8NmPhnMZb4M0+kPpLofRdBo=
github.com/grpc-ecosystem/grpc-gateway v1.16.0/go.mod h1:BDjrQk3hbvj6Nolgz8mAMFbcEtjT1g+wF4CSlocrBnw=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
go.opentelemetry.io/proto/otlp v0.7.0 h1:rwOQPCuKAKmwGKq2aVNnYIibI6wnV7EvzgfTCzcdGg8=
go.opentelemetry.io/proto/otlp v0.7.0/go.mod h1:PqfVotwruBrMGOCsRd/89rSnXhoiJIqeYNgFYFoEGnI=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
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golang.org/x/net v0.0.0-20200822124328-c89045814202 h1:VvcQYSHwXgi7W+TpUR6A9g6Up98WAHf3f/ulnJ62IyA=
golang.org/x/net v0.0.0-20200822124328-c89045814202/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd h1:xhmwyvizuTgC2qz7ZlMluP20uW+C3Rm0FD/WLDX8884=
golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
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golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
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golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
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google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013 h1:+kGHl1aib/qcwaRi1CbqBZ1rk19r85MNUf8HaBghugY=
google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
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google.golang.org/grpc v1.37.0 h1:uSZWeQJX5j11bIQ4AJoj+McDBo29cY1MCoC1wO3ts+c=
google.golang.org/grpc v1.37.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
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google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
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google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
google.golang.org/protobuf v1.26.0 h1:bxAC2xTBsZGibn2RTntX0oH50xLsqy1OxA9tTL3p/lk=
google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

196
vendor/go.opentelemetry.io/otel/exporters/otlp/internal/otlpconfig/envconfig.go generated vendored Normal file
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@ -0,0 +1,196 @@
// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package otlpconfig
import (
"crypto/tls"
"fmt"
"io/ioutil"
"net/url"
"os"
"strconv"
"strings"
"time"
"go.opentelemetry.io/otel/exporters/otlp"
"go.opentelemetry.io/otel"
)
func ApplyGRPCEnvConfigs(cfg *Config) {
e := EnvOptionsReader{
GetEnv: os.Getenv,
ReadFile: ioutil.ReadFile,
}
e.ApplyGRPCEnvConfigs(cfg)
}
func ApplyHTTPEnvConfigs(cfg *Config) {
e := EnvOptionsReader{
GetEnv: os.Getenv,
ReadFile: ioutil.ReadFile,
}
e.ApplyHTTPEnvConfigs(cfg)
}
type EnvOptionsReader struct {
GetEnv func(string) string
ReadFile func(filename string) ([]byte, error)
}
func (e *EnvOptionsReader) ApplyHTTPEnvConfigs(cfg *Config) {
opts := e.GetOptionsFromEnv()
for _, opt := range opts {
opt.ApplyHTTPOption(cfg)
}
}
func (e *EnvOptionsReader) ApplyGRPCEnvConfigs(cfg *Config) {
opts := e.GetOptionsFromEnv()
for _, opt := range opts {
opt.ApplyGRPCOption(cfg)
}
}
func (e *EnvOptionsReader) GetOptionsFromEnv() []GenericOption {
var opts []GenericOption
// Endpoint
if v, ok := e.getEnvValue("ENDPOINT"); ok {
opts = append(opts, WithEndpoint(v))
}
if v, ok := e.getEnvValue("TRACES_ENDPOINT"); ok {
opts = append(opts, WithTracesEndpoint(v))
}
if v, ok := e.getEnvValue("METRICS_ENDPOINT"); ok {
opts = append(opts, WithMetricsEndpoint(v))
}
// Certificate File
if path, ok := e.getEnvValue("CERTIFICATE"); ok {
if tls, err := e.readTLSConfig(path); err == nil {
opts = append(opts, WithTLSClientConfig(tls))
} else {
otel.Handle(fmt.Errorf("failed to configure otlp exporter certificate '%s': %w", path, err))
}
}
if path, ok := e.getEnvValue("TRACES_CERTIFICATE"); ok {
if tls, err := e.readTLSConfig(path); err == nil {
opts = append(opts, WithTracesTLSClientConfig(tls))
} else {
otel.Handle(fmt.Errorf("failed to configure otlp traces exporter certificate '%s': %w", path, err))
}
}
if path, ok := e.getEnvValue("METRICS_CERTIFICATE"); ok {
if tls, err := e.readTLSConfig(path); err == nil {
opts = append(opts, WithMetricsTLSClientConfig(tls))
} else {
otel.Handle(fmt.Errorf("failed to configure otlp metrics exporter certificate '%s': %w", path, err))
}
}
// Headers
if h, ok := e.getEnvValue("HEADERS"); ok {
opts = append(opts, WithHeaders(stringToHeader(h)))
}
if h, ok := e.getEnvValue("TRACES_HEADERS"); ok {
opts = append(opts, WithTracesHeaders(stringToHeader(h)))
}
if h, ok := e.getEnvValue("METRICS_HEADERS"); ok {
opts = append(opts, WithMetricsHeaders(stringToHeader(h)))
}
// Compression
if c, ok := e.getEnvValue("COMPRESSION"); ok {
opts = append(opts, WithCompression(stringToCompression(c)))
}
if c, ok := e.getEnvValue("TRACES_COMPRESSION"); ok {
opts = append(opts, WithTracesCompression(stringToCompression(c)))
}
if c, ok := e.getEnvValue("METRICS_COMPRESSION"); ok {
opts = append(opts, WithMetricsCompression(stringToCompression(c)))
}
// Timeout
if t, ok := e.getEnvValue("TIMEOUT"); ok {
if d, err := strconv.Atoi(t); err == nil {
opts = append(opts, WithTimeout(time.Duration(d)*time.Millisecond))
}
}
if t, ok := e.getEnvValue("TRACES_TIMEOUT"); ok {
if d, err := strconv.Atoi(t); err == nil {
opts = append(opts, WithTracesTimeout(time.Duration(d)*time.Millisecond))
}
}
if t, ok := e.getEnvValue("METRICS_TIMEOUT"); ok {
if d, err := strconv.Atoi(t); err == nil {
opts = append(opts, WithMetricsTimeout(time.Duration(d)*time.Millisecond))
}
}
return opts
}
// getEnvValue gets an OTLP environment variable value of the specified key using the GetEnv function.
// This function already prepends the OTLP prefix to all key lookup.
func (e *EnvOptionsReader) getEnvValue(key string) (string, bool) {
v := strings.TrimSpace(e.GetEnv(fmt.Sprintf("OTEL_EXPORTER_OTLP_%s", key)))
return v, v != ""
}
func (e *EnvOptionsReader) readTLSConfig(path string) (*tls.Config, error) {
b, err := e.ReadFile(path)
if err != nil {
return nil, err
}
return CreateTLSConfig(b)
}
func stringToCompression(value string) otlp.Compression {
switch value {
case "gzip":
return otlp.GzipCompression
}
return otlp.NoCompression
}
func stringToHeader(value string) map[string]string {
headersPairs := strings.Split(value, ",")
headers := make(map[string]string)
for _, header := range headersPairs {
nameValue := strings.SplitN(header, "=", 2)
if len(nameValue) < 2 {
continue
}
name, err := url.QueryUnescape(nameValue[0])
if err != nil {
continue
}
trimmedName := strings.TrimSpace(name)
value, err := url.QueryUnescape(nameValue[1])
if err != nil {
continue
}
trimmedValue := strings.TrimSpace(value)
headers[trimmedName] = trimmedValue
}
return headers
}

376
vendor/go.opentelemetry.io/otel/exporters/otlp/internal/otlpconfig/options.go generated vendored Normal file
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@ -0,0 +1,376 @@
// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package otlpconfig // import "go.opentelemetry.io/otel/exporters/otlp/internal/otlpconfig"
import (
"crypto/tls"
"fmt"
"time"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
"go.opentelemetry.io/otel/exporters/otlp"
)
const (
// DefaultMaxAttempts describes how many times the driver
// should retry the sending of the payload in case of a
// retryable error.
DefaultMaxAttempts int = 5
// DefaultTracesPath is a default URL path for endpoint that
// receives spans.
DefaultTracesPath string = "/v1/traces"
// DefaultMetricsPath is a default URL path for endpoint that
// receives metrics.
DefaultMetricsPath string = "/v1/metrics"
// DefaultBackoff is a default base backoff time used in the
// exponential backoff strategy.
DefaultBackoff time.Duration = 300 * time.Millisecond
// DefaultTimeout is a default max waiting time for the backend to process
// each span or metrics batch.
DefaultTimeout time.Duration = 10 * time.Second
// DefaultServiceConfig is the gRPC service config used if none is
// provided by the user.
DefaultServiceConfig = `{
"methodConfig":[{
"name":[
{ "service":"opentelemetry.proto.collector.metrics.v1.MetricsService" },
{ "service":"opentelemetry.proto.collector.trace.v1.TraceService" }
],
"retryPolicy":{
"MaxAttempts":5,
"InitialBackoff":"0.3s",
"MaxBackoff":"5s",
"BackoffMultiplier":2,
"RetryableStatusCodes":[
"CANCELLED",
"DEADLINE_EXCEEDED",
"RESOURCE_EXHAUSTED",
"ABORTED",
"OUT_OF_RANGE",
"UNAVAILABLE",
"DATA_LOSS"
]
}
}]
}`
)
type (
SignalConfig struct {
Endpoint string
Insecure bool
TLSCfg *tls.Config
Headers map[string]string
Compression otlp.Compression
Timeout time.Duration
URLPath string
// gRPC configurations
GRPCCredentials credentials.TransportCredentials
}
Config struct {
// Signal specific configurations
Metrics SignalConfig
Traces SignalConfig
// General configurations
MaxAttempts int
Backoff time.Duration
// HTTP configuration
Marshaler otlp.Marshaler
// gRPC configurations
ReconnectionPeriod time.Duration
ServiceConfig string
DialOptions []grpc.DialOption
}
)
func NewDefaultConfig() Config {
c := Config{
Traces: SignalConfig{
Endpoint: fmt.Sprintf("%s:%d", otlp.DefaultCollectorHost, otlp.DefaultCollectorPort),
URLPath: DefaultTracesPath,
Compression: otlp.NoCompression,
Timeout: DefaultTimeout,
},
Metrics: SignalConfig{
Endpoint: fmt.Sprintf("%s:%d", otlp.DefaultCollectorHost, otlp.DefaultCollectorPort),
URLPath: DefaultMetricsPath,
Compression: otlp.NoCompression,
Timeout: DefaultTimeout,
},
MaxAttempts: DefaultMaxAttempts,
Backoff: DefaultBackoff,
ServiceConfig: DefaultServiceConfig,
}
return c
}
type (
// GenericOption applies an option to the HTTP or gRPC driver.
GenericOption interface {
ApplyHTTPOption(*Config)
ApplyGRPCOption(*Config)
// A private method to prevent users implementing the
// interface and so future additions to it will not
// violate compatibility.
private()
}
// HTTPOption applies an option to the HTTP driver.
HTTPOption interface {
ApplyHTTPOption(*Config)
// A private method to prevent users implementing the
// interface and so future additions to it will not
// violate compatibility.
private()
}
// GRPCOption applies an option to the gRPC driver.
GRPCOption interface {
ApplyGRPCOption(*Config)
// A private method to prevent users implementing the
// interface and so future additions to it will not
// violate compatibility.
private()
}
)
// genericOption is an option that applies the same logic
// for both gRPC and HTTP.
type genericOption struct {
fn func(*Config)
}
func (g *genericOption) ApplyGRPCOption(cfg *Config) {
g.fn(cfg)
}
func (g *genericOption) ApplyHTTPOption(cfg *Config) {
g.fn(cfg)
}
func (genericOption) private() {}
func newGenericOption(fn func(cfg *Config)) GenericOption {
return &genericOption{fn: fn}
}
// splitOption is an option that applies different logics
// for gRPC and HTTP.
type splitOption struct {
httpFn func(*Config)
grpcFn func(*Config)
}
func (g *splitOption) ApplyGRPCOption(cfg *Config) {
g.grpcFn(cfg)
}
func (g *splitOption) ApplyHTTPOption(cfg *Config) {
g.httpFn(cfg)
}
func (splitOption) private() {}
func newSplitOption(httpFn func(cfg *Config), grpcFn func(cfg *Config)) GenericOption {
return &splitOption{httpFn: httpFn, grpcFn: grpcFn}
}
// httpOption is an option that is only applied to the HTTP driver.
type httpOption struct {
fn func(*Config)
}
func (h *httpOption) ApplyHTTPOption(cfg *Config) {
h.fn(cfg)
}
func (httpOption) private() {}
func NewHTTPOption(fn func(cfg *Config)) HTTPOption {
return &httpOption{fn: fn}
}
// grpcOption is an option that is only applied to the gRPC driver.
type grpcOption struct {
fn func(*Config)
}
func (h *grpcOption) ApplyGRPCOption(cfg *Config) {
h.fn(cfg)
}
func (grpcOption) private() {}
func NewGRPCOption(fn func(cfg *Config)) GRPCOption {
return &grpcOption{fn: fn}
}
// Generic Options
func WithEndpoint(endpoint string) GenericOption {
return newGenericOption(func(cfg *Config) {
cfg.Traces.Endpoint = endpoint
cfg.Metrics.Endpoint = endpoint
})
}
func WithTracesEndpoint(endpoint string) GenericOption {
return newGenericOption(func(cfg *Config) {
cfg.Traces.Endpoint = endpoint
})
}
func WithMetricsEndpoint(endpoint string) GenericOption {
return newGenericOption(func(cfg *Config) {
cfg.Metrics.Endpoint = endpoint
})
}
func WithCompression(compression otlp.Compression) GenericOption {
return newGenericOption(func(cfg *Config) {
cfg.Traces.Compression = compression
cfg.Metrics.Compression = compression
})
}
func WithTracesCompression(compression otlp.Compression) GenericOption {
return newGenericOption(func(cfg *Config) {
cfg.Traces.Compression = compression
})
}
func WithMetricsCompression(compression otlp.Compression) GenericOption {
return newGenericOption(func(cfg *Config) {
cfg.Metrics.Compression = compression
})
}
func WithTracesURLPath(urlPath string) GenericOption {
return newGenericOption(func(cfg *Config) {
cfg.Traces.URLPath = urlPath
})
}
func WithMetricsURLPath(urlPath string) GenericOption {
return newGenericOption(func(cfg *Config) {
cfg.Metrics.URLPath = urlPath
})
}
func WithMaxAttempts(maxAttempts int) GenericOption {
return newGenericOption(func(cfg *Config) {
cfg.MaxAttempts = maxAttempts
})
}
func WithBackoff(duration time.Duration) GenericOption {
return newGenericOption(func(cfg *Config) {
cfg.Backoff = duration
})
}
func WithTLSClientConfig(tlsCfg *tls.Config) GenericOption {
return newSplitOption(func(cfg *Config) {
cfg.Traces.TLSCfg = tlsCfg.Clone()
cfg.Metrics.TLSCfg = tlsCfg.Clone()
}, func(cfg *Config) {
cfg.Traces.GRPCCredentials = credentials.NewTLS(tlsCfg)
cfg.Metrics.GRPCCredentials = credentials.NewTLS(tlsCfg)
})
}
func WithTracesTLSClientConfig(tlsCfg *tls.Config) GenericOption {
return newSplitOption(func(cfg *Config) {
cfg.Traces.TLSCfg = tlsCfg.Clone()
}, func(cfg *Config) {
cfg.Traces.GRPCCredentials = credentials.NewTLS(tlsCfg)
})
}
func WithMetricsTLSClientConfig(tlsCfg *tls.Config) GenericOption {
return newSplitOption(func(cfg *Config) {
cfg.Metrics.TLSCfg = tlsCfg.Clone()
}, func(cfg *Config) {
cfg.Metrics.GRPCCredentials = credentials.NewTLS(tlsCfg)
})
}
func WithInsecure() GenericOption {
return newGenericOption(func(cfg *Config) {
cfg.Traces.Insecure = true
cfg.Metrics.Insecure = true
})
}
func WithInsecureTraces() GenericOption {
return newGenericOption(func(cfg *Config) {
cfg.Traces.Insecure = true
})
}
func WithInsecureMetrics() GenericOption {
return newGenericOption(func(cfg *Config) {
cfg.Metrics.Insecure = true
})
}
func WithHeaders(headers map[string]string) GenericOption {
return newGenericOption(func(cfg *Config) {
cfg.Traces.Headers = headers
cfg.Metrics.Headers = headers
})
}
func WithTracesHeaders(headers map[string]string) GenericOption {
return newGenericOption(func(cfg *Config) {
cfg.Traces.Headers = headers
})
}
func WithMetricsHeaders(headers map[string]string) GenericOption {
return newGenericOption(func(cfg *Config) {
cfg.Metrics.Headers = headers
})
}
func WithTimeout(duration time.Duration) GenericOption {
return newGenericOption(func(cfg *Config) {
cfg.Traces.Timeout = duration
cfg.Metrics.Timeout = duration
})
}
func WithTracesTimeout(duration time.Duration) GenericOption {
return newGenericOption(func(cfg *Config) {
cfg.Traces.Timeout = duration
})
}
func WithMetricsTimeout(duration time.Duration) GenericOption {
return newGenericOption(func(cfg *Config) {
cfg.Metrics.Timeout = duration
})
}

69
vendor/go.opentelemetry.io/otel/exporters/otlp/internal/otlpconfig/tls.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package otlpconfig
import (
"crypto/tls"
"crypto/x509"
"errors"
"io/ioutil"
)
const (
WeakCertificate = `
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
`
WeakPrivateKey = `
-----BEGIN PRIVATE KEY-----
MIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQgN8HEXiXhvByrJ1zK
SFT6Y2l2KqDWwWzKf+t4CyWrNKehRANCAAS9nWSkmPCxShxnp43F+PrOtbGV7sNf
kbQ/kxzi9Ego0ZJdiXxkmv/C05QFddCW7Y0ZsJCLHGogQsYnWJBXUZOV
-----END PRIVATE KEY-----
`
)
// ReadTLSConfigFromFile reads a PEM certificate file and creates
// a tls.Config that will use this certifate to verify a server certificate.
func ReadTLSConfigFromFile(path string) (*tls.Config, error) {
b, err := ioutil.ReadFile(path)
if err != nil {
return nil, err
}
return CreateTLSConfig(b)
}
// CreateTLSConfig creates a tls.Config from a raw certificate bytes
// to verify a server certificate.
func CreateTLSConfig(certBytes []byte) (*tls.Config, error) {
cp := x509.NewCertPool()
if ok := cp.AppendCertsFromPEM(certBytes); !ok {
return nil, errors.New("failed to append certificate to the cert pool")
}
return &tls.Config{
RootCAs: cp,
}, nil
}

141
vendor/go.opentelemetry.io/otel/exporters/otlp/internal/transform/attribute.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package transform
import (
"reflect"
"go.opentelemetry.io/otel/attribute"
commonpb "go.opentelemetry.io/proto/otlp/common/v1"
"go.opentelemetry.io/otel/sdk/resource"
)
// Attributes transforms a slice of KeyValues into a slice of OTLP attribute key-values.
func Attributes(attrs []attribute.KeyValue) []*commonpb.KeyValue {
if len(attrs) == 0 {
return nil
}
out := make([]*commonpb.KeyValue, 0, len(attrs))
for _, kv := range attrs {
out = append(out, toAttribute(kv))
}
return out
}
// ResourceAttributes transforms a Resource into a slice of OTLP attribute key-values.
func ResourceAttributes(resource *resource.Resource) []*commonpb.KeyValue {
if resource.Len() == 0 {
return nil
}
out := make([]*commonpb.KeyValue, 0, resource.Len())
for iter := resource.Iter(); iter.Next(); {
out = append(out, toAttribute(iter.Attribute()))
}
return out
}
func toAttribute(v attribute.KeyValue) *commonpb.KeyValue {
result := &commonpb.KeyValue{
Key: string(v.Key),
Value: new(commonpb.AnyValue),
}
switch v.Value.Type() {
case attribute.BOOL:
result.Value.Value = &commonpb.AnyValue_BoolValue{
BoolValue: v.Value.AsBool(),
}
case attribute.INT64:
result.Value.Value = &commonpb.AnyValue_IntValue{
IntValue: v.Value.AsInt64(),
}
case attribute.FLOAT64:
result.Value.Value = &commonpb.AnyValue_DoubleValue{
DoubleValue: v.Value.AsFloat64(),
}
case attribute.STRING:
result.Value.Value = &commonpb.AnyValue_StringValue{
StringValue: v.Value.AsString(),
}
case attribute.ARRAY:
result.Value.Value = &commonpb.AnyValue_ArrayValue{
ArrayValue: &commonpb.ArrayValue{
Values: arrayValues(v),
},
}
default:
result.Value.Value = &commonpb.AnyValue_StringValue{
StringValue: "INVALID",
}
}
return result
}
func arrayValues(kv attribute.KeyValue) []*commonpb.AnyValue {
a := kv.Value.AsArray()
aType := reflect.TypeOf(a)
var valueFunc func(reflect.Value) *commonpb.AnyValue
switch aType.Elem().Kind() {
case reflect.Bool:
valueFunc = func(v reflect.Value) *commonpb.AnyValue {
return &commonpb.AnyValue{
Value: &commonpb.AnyValue_BoolValue{
BoolValue: v.Bool(),
},
}
}
case reflect.Int, reflect.Int64:
valueFunc = func(v reflect.Value) *commonpb.AnyValue {
return &commonpb.AnyValue{
Value: &commonpb.AnyValue_IntValue{
IntValue: v.Int(),
},
}
}
case reflect.Uintptr:
valueFunc = func(v reflect.Value) *commonpb.AnyValue {
return &commonpb.AnyValue{
Value: &commonpb.AnyValue_IntValue{
IntValue: int64(v.Uint()),
},
}
}
case reflect.Float64:
valueFunc = func(v reflect.Value) *commonpb.AnyValue {
return &commonpb.AnyValue{
Value: &commonpb.AnyValue_DoubleValue{
DoubleValue: v.Float(),
},
}
}
case reflect.String:
valueFunc = func(v reflect.Value) *commonpb.AnyValue {
return &commonpb.AnyValue{
Value: &commonpb.AnyValue_StringValue{
StringValue: v.String(),
},
}
}
}
results := make([]*commonpb.AnyValue, aType.Len())
for i, aValue := 0, reflect.ValueOf(a); i < aValue.Len(); i++ {
results[i] = valueFunc(aValue.Index(i))
}
return results
}

31
vendor/go.opentelemetry.io/otel/exporters/otlp/internal/transform/instrumentation.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package transform
import (
commonpb "go.opentelemetry.io/proto/otlp/common/v1"
"go.opentelemetry.io/otel/sdk/instrumentation"
)
func instrumentationLibrary(il instrumentation.Library) *commonpb.InstrumentationLibrary {
if il == (instrumentation.Library{}) {
return nil
}
return &commonpb.InstrumentationLibrary{
Name: il.Name,
Version: il.Version,
}
}

631
vendor/go.opentelemetry.io/otel/exporters/otlp/internal/transform/metric.go generated vendored Normal file
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@ -0,0 +1,631 @@
// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package transform provides translations for opentelemetry-go concepts and
// structures to otlp structures.
package transform
import (
"context"
"errors"
"fmt"
"strings"
"sync"
"time"
"go.opentelemetry.io/otel/attribute"
commonpb "go.opentelemetry.io/proto/otlp/common/v1"
metricpb "go.opentelemetry.io/proto/otlp/metrics/v1"
resourcepb "go.opentelemetry.io/proto/otlp/resource/v1"
"go.opentelemetry.io/otel/metric/number"
export "go.opentelemetry.io/otel/sdk/export/metric"
"go.opentelemetry.io/otel/sdk/export/metric/aggregation"
"go.opentelemetry.io/otel/sdk/instrumentation"
"go.opentelemetry.io/otel/sdk/resource"
)
var (
// ErrUnimplementedAgg is returned when a transformation of an unimplemented
// aggregator is attempted.
ErrUnimplementedAgg = errors.New("unimplemented aggregator")
// ErrIncompatibleAgg is returned when
// aggregation.Kind implies an interface conversion that has
// failed
ErrIncompatibleAgg = errors.New("incompatible aggregation type")
// ErrUnknownValueType is returned when a transformation of an unknown value
// is attempted.
ErrUnknownValueType = errors.New("invalid value type")
// ErrContextCanceled is returned when a context cancellation halts a
// transformation.
ErrContextCanceled = errors.New("context canceled")
// ErrTransforming is returned when an unexected error is encoutered transforming.
ErrTransforming = errors.New("transforming failed")
)
// result is the product of transforming Records into OTLP Metrics.
type result struct {
Resource *resource.Resource
InstrumentationLibrary instrumentation.Library
Metric *metricpb.Metric
Err error
}
// toNanos returns the number of nanoseconds since the UNIX epoch.
func toNanos(t time.Time) uint64 {
if t.IsZero() {
return 0
}
return uint64(t.UnixNano())
}
// CheckpointSet transforms all records contained in a checkpoint into
// batched OTLP ResourceMetrics.
func CheckpointSet(ctx context.Context, exportSelector export.ExportKindSelector, cps export.CheckpointSet, numWorkers uint) ([]*metricpb.ResourceMetrics, error) {
records, errc := source(ctx, exportSelector, cps)
// Start a fixed number of goroutines to transform records.
transformed := make(chan result)
var wg sync.WaitGroup
wg.Add(int(numWorkers))
for i := uint(0); i < numWorkers; i++ {
go func() {
defer wg.Done()
transformer(ctx, exportSelector, records, transformed)
}()
}
go func() {
wg.Wait()
close(transformed)
}()
// Synchronously collect the transformed records and transmit.
rms, err := sink(ctx, transformed)
if err != nil {
return nil, err
}
// source is complete, check for any errors.
if err := <-errc; err != nil {
return nil, err
}
return rms, nil
}
// source starts a goroutine that sends each one of the Records yielded by
// the CheckpointSet on the returned chan. Any error encoutered will be sent
// on the returned error chan after seeding is complete.
func source(ctx context.Context, exportSelector export.ExportKindSelector, cps export.CheckpointSet) (<-chan export.Record, <-chan error) {
errc := make(chan error, 1)
out := make(chan export.Record)
// Seed records into process.
go func() {
defer close(out)
// No select is needed since errc is buffered.
errc <- cps.ForEach(exportSelector, func(r export.Record) error {
select {
case <-ctx.Done():
return ErrContextCanceled
case out <- r:
}
return nil
})
}()
return out, errc
}
// transformer transforms records read from the passed in chan into
// OTLP Metrics which are sent on the out chan.
func transformer(ctx context.Context, exportSelector export.ExportKindSelector, in <-chan export.Record, out chan<- result) {
for r := range in {
m, err := Record(exportSelector, r)
// Propagate errors, but do not send empty results.
if err == nil && m == nil {
continue
}
res := result{
Resource: r.Resource(),
InstrumentationLibrary: instrumentation.Library{
Name: r.Descriptor().InstrumentationName(),
Version: r.Descriptor().InstrumentationVersion(),
},
Metric: m,
Err: err,
}
select {
case <-ctx.Done():
return
case out <- res:
}
}
}
// sink collects transformed Records and batches them.
//
// Any errors encoutered transforming input will be reported with an
// ErrTransforming as well as the completed ResourceMetrics. It is up to the
// caller to handle any incorrect data in these ResourceMetrics.
func sink(ctx context.Context, in <-chan result) ([]*metricpb.ResourceMetrics, error) {
var errStrings []string
type resourceBatch struct {
Resource *resourcepb.Resource
// Group by instrumentation library name and then the MetricDescriptor.
InstrumentationLibraryBatches map[instrumentation.Library]map[string]*metricpb.Metric
}
// group by unique Resource string.
grouped := make(map[attribute.Distinct]resourceBatch)
for res := range in {
if res.Err != nil {
errStrings = append(errStrings, res.Err.Error())
continue
}
rID := res.Resource.Equivalent()
rb, ok := grouped[rID]
if !ok {
rb = resourceBatch{
Resource: Resource(res.Resource),
InstrumentationLibraryBatches: make(map[instrumentation.Library]map[string]*metricpb.Metric),
}
grouped[rID] = rb
}
mb, ok := rb.InstrumentationLibraryBatches[res.InstrumentationLibrary]
if !ok {
mb = make(map[string]*metricpb.Metric)
rb.InstrumentationLibraryBatches[res.InstrumentationLibrary] = mb
}
mID := res.Metric.GetName()
m, ok := mb[mID]
if !ok {
mb[mID] = res.Metric
continue
}
switch res.Metric.Data.(type) {
case *metricpb.Metric_IntGauge:
m.GetIntGauge().DataPoints = append(m.GetIntGauge().DataPoints, res.Metric.GetIntGauge().DataPoints...)
case *metricpb.Metric_IntHistogram:
m.GetIntHistogram().DataPoints = append(m.GetIntHistogram().DataPoints, res.Metric.GetIntHistogram().DataPoints...)
case *metricpb.Metric_IntSum:
m.GetIntSum().DataPoints = append(m.GetIntSum().DataPoints, res.Metric.GetIntSum().DataPoints...)
case *metricpb.Metric_DoubleGauge:
m.GetDoubleGauge().DataPoints = append(m.GetDoubleGauge().DataPoints, res.Metric.GetDoubleGauge().DataPoints...)
case *metricpb.Metric_DoubleHistogram:
m.GetDoubleHistogram().DataPoints = append(m.GetDoubleHistogram().DataPoints, res.Metric.GetDoubleHistogram().DataPoints...)
case *metricpb.Metric_DoubleSum:
m.GetDoubleSum().DataPoints = append(m.GetDoubleSum().DataPoints, res.Metric.GetDoubleSum().DataPoints...)
default:
}
}
if len(grouped) == 0 {
return nil, nil
}
var rms []*metricpb.ResourceMetrics
for _, rb := range grouped {
rm := &metricpb.ResourceMetrics{Resource: rb.Resource}
for il, mb := range rb.InstrumentationLibraryBatches {
ilm := &metricpb.InstrumentationLibraryMetrics{
Metrics: make([]*metricpb.Metric, 0, len(mb)),
}
if il != (instrumentation.Library{}) {
ilm.InstrumentationLibrary = &commonpb.InstrumentationLibrary{
Name: il.Name,
Version: il.Version,
}
}
for _, m := range mb {
ilm.Metrics = append(ilm.Metrics, m)
}
rm.InstrumentationLibraryMetrics = append(rm.InstrumentationLibraryMetrics, ilm)
}
rms = append(rms, rm)
}
// Report any transform errors.
if len(errStrings) > 0 {
return rms, fmt.Errorf("%w:\n -%s", ErrTransforming, strings.Join(errStrings, "\n -"))
}
return rms, nil
}
// Record transforms a Record into an OTLP Metric. An ErrIncompatibleAgg
// error is returned if the Record Aggregator is not supported.
func Record(exportSelector export.ExportKindSelector, r export.Record) (*metricpb.Metric, error) {
agg := r.Aggregation()
switch agg.Kind() {
case aggregation.MinMaxSumCountKind:
mmsc, ok := agg.(aggregation.MinMaxSumCount)
if !ok {
return nil, fmt.Errorf("%w: %T", ErrIncompatibleAgg, agg)
}
return minMaxSumCount(r, mmsc)
case aggregation.HistogramKind:
h, ok := agg.(aggregation.Histogram)
if !ok {
return nil, fmt.Errorf("%w: %T", ErrIncompatibleAgg, agg)
}
return histogramPoint(r, exportSelector.ExportKindFor(r.Descriptor(), aggregation.HistogramKind), h)
case aggregation.SumKind:
s, ok := agg.(aggregation.Sum)
if !ok {
return nil, fmt.Errorf("%w: %T", ErrIncompatibleAgg, agg)
}
sum, err := s.Sum()
if err != nil {
return nil, err
}
return sumPoint(r, sum, r.StartTime(), r.EndTime(), exportSelector.ExportKindFor(r.Descriptor(), aggregation.SumKind), r.Descriptor().InstrumentKind().Monotonic())
case aggregation.LastValueKind:
lv, ok := agg.(aggregation.LastValue)
if !ok {
return nil, fmt.Errorf("%w: %T", ErrIncompatibleAgg, agg)
}
value, tm, err := lv.LastValue()
if err != nil {
return nil, err
}
return gaugePoint(r, value, time.Time{}, tm)
case aggregation.ExactKind:
e, ok := agg.(aggregation.Points)
if !ok {
return nil, fmt.Errorf("%w: %T", ErrIncompatibleAgg, agg)
}
pts, err := e.Points()
if err != nil {
return nil, err
}
return gaugeArray(r, pts)
default:
return nil, fmt.Errorf("%w: %T", ErrUnimplementedAgg, agg)
}
}
func gaugeArray(record export.Record, points []aggregation.Point) (*metricpb.Metric, error) {
desc := record.Descriptor()
labels := record.Labels()
m := &metricpb.Metric{
Name: desc.Name(),
Description: desc.Description(),
Unit: string(desc.Unit()),
}
pbLabels := stringKeyValues(labels.Iter())
switch nk := desc.NumberKind(); nk {
case number.Int64Kind:
var pts []*metricpb.IntDataPoint
for _, s := range points {
pts = append(pts, &metricpb.IntDataPoint{
Labels: pbLabels,
StartTimeUnixNano: toNanos(record.StartTime()),
TimeUnixNano: toNanos(record.EndTime()),
Value: s.Number.CoerceToInt64(nk),
})
}
m.Data = &metricpb.Metric_IntGauge{
IntGauge: &metricpb.IntGauge{
DataPoints: pts,
},
}
case number.Float64Kind:
var pts []*metricpb.DoubleDataPoint
for _, s := range points {
pts = append(pts, &metricpb.DoubleDataPoint{
Labels: pbLabels,
StartTimeUnixNano: toNanos(record.StartTime()),
TimeUnixNano: toNanos(record.EndTime()),
Value: s.Number.CoerceToFloat64(nk),
})
}
m.Data = &metricpb.Metric_DoubleGauge{
DoubleGauge: &metricpb.DoubleGauge{
DataPoints: pts,
},
}
default:
return nil, fmt.Errorf("%w: %v", ErrUnknownValueType, nk)
}
return m, nil
}
func gaugePoint(record export.Record, num number.Number, start, end time.Time) (*metricpb.Metric, error) {
desc := record.Descriptor()
labels := record.Labels()
m := &metricpb.Metric{
Name: desc.Name(),
Description: desc.Description(),
Unit: string(desc.Unit()),
}
switch n := desc.NumberKind(); n {
case number.Int64Kind:
m.Data = &metricpb.Metric_IntGauge{
IntGauge: &metricpb.IntGauge{
DataPoints: []*metricpb.IntDataPoint{
{
Value: num.CoerceToInt64(n),
Labels: stringKeyValues(labels.Iter()),
StartTimeUnixNano: toNanos(start),
TimeUnixNano: toNanos(end),
},
},
},
}
case number.Float64Kind:
m.Data = &metricpb.Metric_DoubleGauge{
DoubleGauge: &metricpb.DoubleGauge{
DataPoints: []*metricpb.DoubleDataPoint{
{
Value: num.CoerceToFloat64(n),
Labels: stringKeyValues(labels.Iter()),
StartTimeUnixNano: toNanos(start),
TimeUnixNano: toNanos(end),
},
},
},
}
default:
return nil, fmt.Errorf("%w: %v", ErrUnknownValueType, n)
}
return m, nil
}
func exportKindToTemporality(ek export.ExportKind) metricpb.AggregationTemporality {
switch ek {
case export.DeltaExportKind:
return metricpb.AggregationTemporality_AGGREGATION_TEMPORALITY_DELTA
case export.CumulativeExportKind:
return metricpb.AggregationTemporality_AGGREGATION_TEMPORALITY_CUMULATIVE
}
return metricpb.AggregationTemporality_AGGREGATION_TEMPORALITY_UNSPECIFIED
}
func sumPoint(record export.Record, num number.Number, start, end time.Time, ek export.ExportKind, monotonic bool) (*metricpb.Metric, error) {
desc := record.Descriptor()
labels := record.Labels()
m := &metricpb.Metric{
Name: desc.Name(),
Description: desc.Description(),
Unit: string(desc.Unit()),
}
switch n := desc.NumberKind(); n {
case number.Int64Kind:
m.Data = &metricpb.Metric_IntSum{
IntSum: &metricpb.IntSum{
IsMonotonic: monotonic,
AggregationTemporality: exportKindToTemporality(ek),
DataPoints: []*metricpb.IntDataPoint{
{
Value: num.CoerceToInt64(n),
Labels: stringKeyValues(labels.Iter()),
StartTimeUnixNano: toNanos(start),
TimeUnixNano: toNanos(end),
},
},
},
}
case number.Float64Kind:
m.Data = &metricpb.Metric_DoubleSum{
DoubleSum: &metricpb.DoubleSum{
IsMonotonic: monotonic,
AggregationTemporality: exportKindToTemporality(ek),
DataPoints: []*metricpb.DoubleDataPoint{
{
Value: num.CoerceToFloat64(n),
Labels: stringKeyValues(labels.Iter()),
StartTimeUnixNano: toNanos(start),
TimeUnixNano: toNanos(end),
},
},
},
}
default:
return nil, fmt.Errorf("%w: %v", ErrUnknownValueType, n)
}
return m, nil
}
// minMaxSumCountValue returns the values of the MinMaxSumCount Aggregator
// as discrete values.
func minMaxSumCountValues(a aggregation.MinMaxSumCount) (min, max, sum number.Number, count uint64, err error) {
if min, err = a.Min(); err != nil {
return
}
if max, err = a.Max(); err != nil {
return
}
if sum, err = a.Sum(); err != nil {
return
}
if count, err = a.Count(); err != nil {
return
}
return
}
// minMaxSumCount transforms a MinMaxSumCount Aggregator into an OTLP Metric.
func minMaxSumCount(record export.Record, a aggregation.MinMaxSumCount) (*metricpb.Metric, error) {
desc := record.Descriptor()
labels := record.Labels()
min, max, sum, count, err := minMaxSumCountValues(a)
if err != nil {
return nil, err
}
m := &metricpb.Metric{
Name: desc.Name(),
Description: desc.Description(),
Unit: string(desc.Unit()),
}
buckets := []uint64{min.AsRaw(), max.AsRaw()}
bounds := []float64{0.0, 100.0}
switch n := desc.NumberKind(); n {
case number.Int64Kind:
m.Data = &metricpb.Metric_IntHistogram{
IntHistogram: &metricpb.IntHistogram{
DataPoints: []*metricpb.IntHistogramDataPoint{
{
Sum: sum.CoerceToInt64(n),
Labels: stringKeyValues(labels.Iter()),
StartTimeUnixNano: toNanos(record.StartTime()),
TimeUnixNano: toNanos(record.EndTime()),
Count: uint64(count),
BucketCounts: buckets,
ExplicitBounds: bounds,
},
},
},
}
case number.Float64Kind:
m.Data = &metricpb.Metric_DoubleHistogram{
DoubleHistogram: &metricpb.DoubleHistogram{
DataPoints: []*metricpb.DoubleHistogramDataPoint{
{
Sum: sum.CoerceToFloat64(n),
Labels: stringKeyValues(labels.Iter()),
StartTimeUnixNano: toNanos(record.StartTime()),
TimeUnixNano: toNanos(record.EndTime()),
Count: uint64(count),
BucketCounts: buckets,
ExplicitBounds: bounds,
},
},
},
}
default:
return nil, fmt.Errorf("%w: %v", ErrUnknownValueType, n)
}
return m, nil
}
func histogramValues(a aggregation.Histogram) (boundaries []float64, counts []uint64, err error) {
var buckets aggregation.Buckets
if buckets, err = a.Histogram(); err != nil {
return
}
boundaries, counts = buckets.Boundaries, buckets.Counts
if len(counts) != len(boundaries)+1 {
err = ErrTransforming
return
}
return
}
// histogram transforms a Histogram Aggregator into an OTLP Metric.
func histogramPoint(record export.Record, ek export.ExportKind, a aggregation.Histogram) (*metricpb.Metric, error) {
desc := record.Descriptor()
labels := record.Labels()
boundaries, counts, err := histogramValues(a)
if err != nil {
return nil, err
}
count, err := a.Count()
if err != nil {
return nil, err
}
sum, err := a.Sum()
if err != nil {
return nil, err
}
m := &metricpb.Metric{
Name: desc.Name(),
Description: desc.Description(),
Unit: string(desc.Unit()),
}
switch n := desc.NumberKind(); n {
case number.Int64Kind:
m.Data = &metricpb.Metric_IntHistogram{
IntHistogram: &metricpb.IntHistogram{
AggregationTemporality: exportKindToTemporality(ek),
DataPoints: []*metricpb.IntHistogramDataPoint{
{
Sum: sum.CoerceToInt64(n),
Labels: stringKeyValues(labels.Iter()),
StartTimeUnixNano: toNanos(record.StartTime()),
TimeUnixNano: toNanos(record.EndTime()),
Count: uint64(count),
BucketCounts: counts,
ExplicitBounds: boundaries,
},
},
},
}
case number.Float64Kind:
m.Data = &metricpb.Metric_DoubleHistogram{
DoubleHistogram: &metricpb.DoubleHistogram{
AggregationTemporality: exportKindToTemporality(ek),
DataPoints: []*metricpb.DoubleHistogramDataPoint{
{
Sum: sum.CoerceToFloat64(n),
Labels: stringKeyValues(labels.Iter()),
StartTimeUnixNano: toNanos(record.StartTime()),
TimeUnixNano: toNanos(record.EndTime()),
Count: uint64(count),
BucketCounts: counts,
ExplicitBounds: boundaries,
},
},
},
}
default:
return nil, fmt.Errorf("%w: %v", ErrUnknownValueType, n)
}
return m, nil
}
// stringKeyValues transforms a label iterator into an OTLP StringKeyValues.
func stringKeyValues(iter attribute.Iterator) []*commonpb.StringKeyValue {
l := iter.Len()
if l == 0 {
return nil
}
result := make([]*commonpb.StringKeyValue, 0, l)
for iter.Next() {
kv := iter.Label()
result = append(result, &commonpb.StringKeyValue{
Key: string(kv.Key),
Value: kv.Value.Emit(),
})
}
return result
}

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vendor/go.opentelemetry.io/otel/exporters/otlp/internal/transform/resource.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package transform
import (
resourcepb "go.opentelemetry.io/proto/otlp/resource/v1"
"go.opentelemetry.io/otel/sdk/resource"
)
// Resource transforms a Resource into an OTLP Resource.
func Resource(r *resource.Resource) *resourcepb.Resource {
if r == nil {
return nil
}
return &resourcepb.Resource{Attributes: ResourceAttributes(r)}
}

218
vendor/go.opentelemetry.io/otel/exporters/otlp/internal/transform/span.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package transform
import (
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/codes"
tracepb "go.opentelemetry.io/proto/otlp/trace/v1"
"go.opentelemetry.io/otel/sdk/instrumentation"
tracesdk "go.opentelemetry.io/otel/sdk/trace"
"go.opentelemetry.io/otel/trace"
)
const (
maxMessageEventsPerSpan = 128
)
// SpanData transforms a slice of SpanSnapshot into a slice of OTLP
// ResourceSpans.
func SpanData(sdl []*tracesdk.SpanSnapshot) []*tracepb.ResourceSpans {
if len(sdl) == 0 {
return nil
}
rsm := make(map[attribute.Distinct]*tracepb.ResourceSpans)
type ilsKey struct {
r attribute.Distinct
il instrumentation.Library
}
ilsm := make(map[ilsKey]*tracepb.InstrumentationLibrarySpans)
var resources int
for _, sd := range sdl {
if sd == nil {
continue
}
rKey := sd.Resource.Equivalent()
iKey := ilsKey{
r: rKey,
il: sd.InstrumentationLibrary,
}
ils, iOk := ilsm[iKey]
if !iOk {
// Either the resource or instrumentation library were unknown.
ils = &tracepb.InstrumentationLibrarySpans{
InstrumentationLibrary: instrumentationLibrary(sd.InstrumentationLibrary),
Spans: []*tracepb.Span{},
}
}
ils.Spans = append(ils.Spans, span(sd))
ilsm[iKey] = ils
rs, rOk := rsm[rKey]
if !rOk {
resources++
// The resource was unknown.
rs = &tracepb.ResourceSpans{
Resource: Resource(sd.Resource),
InstrumentationLibrarySpans: []*tracepb.InstrumentationLibrarySpans{ils},
}
rsm[rKey] = rs
continue
}
// The resource has been seen before. Check if the instrumentation
// library lookup was unknown because if so we need to add it to the
// ResourceSpans. Otherwise, the instrumentation library has already
// been seen and the append we did above will be included it in the
// InstrumentationLibrarySpans reference.
if !iOk {
rs.InstrumentationLibrarySpans = append(rs.InstrumentationLibrarySpans, ils)
}
}
// Transform the categorized map into a slice
rss := make([]*tracepb.ResourceSpans, 0, resources)
for _, rs := range rsm {
rss = append(rss, rs)
}
return rss
}
// span transforms a Span into an OTLP span.
func span(sd *tracesdk.SpanSnapshot) *tracepb.Span {
if sd == nil {
return nil
}
tid := sd.SpanContext.TraceID()
sid := sd.SpanContext.SpanID()
s := &tracepb.Span{
TraceId: tid[:],
SpanId: sid[:],
TraceState: sd.SpanContext.TraceState().String(),
Status: status(sd.StatusCode, sd.StatusMessage),
StartTimeUnixNano: uint64(sd.StartTime.UnixNano()),
EndTimeUnixNano: uint64(sd.EndTime.UnixNano()),
Links: links(sd.Links),
Kind: spanKind(sd.SpanKind),
Name: sd.Name,
Attributes: Attributes(sd.Attributes),
Events: spanEvents(sd.MessageEvents),
DroppedAttributesCount: uint32(sd.DroppedAttributeCount),
DroppedEventsCount: uint32(sd.DroppedMessageEventCount),
DroppedLinksCount: uint32(sd.DroppedLinkCount),
}
if psid := sd.Parent.SpanID(); psid.IsValid() {
s.ParentSpanId = psid[:]
}
return s
}
// status transform a span code and message into an OTLP span status.
func status(status codes.Code, message string) *tracepb.Status {
var c tracepb.Status_StatusCode
switch status {
case codes.Error:
c = tracepb.Status_STATUS_CODE_ERROR
default:
c = tracepb.Status_STATUS_CODE_OK
}
return &tracepb.Status{
Code: c,
Message: message,
}
}
// links transforms span Links to OTLP span links.
func links(links []trace.Link) []*tracepb.Span_Link {
if len(links) == 0 {
return nil
}
sl := make([]*tracepb.Span_Link, 0, len(links))
for _, otLink := range links {
// This redefinition is necessary to prevent otLink.*ID[:] copies
// being reused -- in short we need a new otLink per iteration.
otLink := otLink
tid := otLink.TraceID()
sid := otLink.SpanID()
sl = append(sl, &tracepb.Span_Link{
TraceId: tid[:],
SpanId: sid[:],
Attributes: Attributes(otLink.Attributes),
})
}
return sl
}
// spanEvents transforms span Events to an OTLP span events.
func spanEvents(es []trace.Event) []*tracepb.Span_Event {
if len(es) == 0 {
return nil
}
evCount := len(es)
if evCount > maxMessageEventsPerSpan {
evCount = maxMessageEventsPerSpan
}
events := make([]*tracepb.Span_Event, 0, evCount)
messageEvents := 0
// Transform message events
for _, e := range es {
if messageEvents >= maxMessageEventsPerSpan {
break
}
messageEvents++
events = append(events,
&tracepb.Span_Event{
Name: e.Name,
TimeUnixNano: uint64(e.Time.UnixNano()),
Attributes: Attributes(e.Attributes),
// TODO (rghetia) : Add Drop Counts when supported.
},
)
}
return events
}
// spanKind transforms a SpanKind to an OTLP span kind.
func spanKind(kind trace.SpanKind) tracepb.Span_SpanKind {
switch kind {
case trace.SpanKindInternal:
return tracepb.Span_SPAN_KIND_INTERNAL
case trace.SpanKindClient:
return tracepb.Span_SPAN_KIND_CLIENT
case trace.SpanKindServer:
return tracepb.Span_SPAN_KIND_SERVER
case trace.SpanKindProducer:
return tracepb.Span_SPAN_KIND_PRODUCER
case trace.SpanKindConsumer:
return tracepb.Span_SPAN_KIND_CONSUMER
default:
return tracepb.Span_SPAN_KIND_UNSPECIFIED
}
}

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vendor/go.opentelemetry.io/otel/exporters/otlp/options.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package otlp // import "go.opentelemetry.io/otel/exporters/otlp"
import (
metricsdk "go.opentelemetry.io/otel/sdk/export/metric"
)
const (
// DefaultCollectorPort is the port the Exporter will attempt connect to
// if no collector port is provided.
DefaultCollectorPort uint16 = 4317
// DefaultCollectorHost is the host address the Exporter will attempt
// connect to if no collector address is provided.
DefaultCollectorHost string = "localhost"
)
// ExporterOption are setting options passed to an Exporter on creation.
type ExporterOption func(*config)
type config struct {
exportKindSelector metricsdk.ExportKindSelector
}
// WithMetricExportKindSelector defines the ExportKindSelector used
// for selecting AggregationTemporality (i.e., Cumulative vs. Delta
// aggregation). If not specified otherwise, exporter will use a
// cumulative export kind selector.
func WithMetricExportKindSelector(selector metricsdk.ExportKindSelector) ExporterOption {
return func(cfg *config) {
cfg.exportKindSelector = selector
}
}

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vendor/go.opentelemetry.io/otel/exporters/otlp/optiontypes.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package otlp // import "go.opentelemetry.io/otel/exporters/otlp"
// Compression describes the compression used for payloads sent to the
// collector.
type Compression int
const (
// NoCompression tells the driver to send payloads without
// compression.
NoCompression Compression = iota
// GzipCompression tells the driver to send payloads after
// compressing them with gzip.
GzipCompression
)
// Marshaler describes the kind of message format sent to the collector
type Marshaler int
const (
// MarshalProto tells the driver to send using the protobuf binary format.
MarshalProto Marshaler = iota
// MarshalJSON tells the driver to send using json format.
MarshalJSON
)

179
vendor/go.opentelemetry.io/otel/exporters/otlp/otlp.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package otlp // import "go.opentelemetry.io/otel/exporters/otlp"
import (
"context"
"errors"
"sync"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/metric"
metricsdk "go.opentelemetry.io/otel/sdk/export/metric"
"go.opentelemetry.io/otel/sdk/export/metric/aggregation"
"go.opentelemetry.io/otel/sdk/metric/selector/simple"
sdktrace "go.opentelemetry.io/otel/sdk/trace"
"go.opentelemetry.io/otel/sdk/metric/controller/basic"
processor "go.opentelemetry.io/otel/sdk/metric/processor/basic"
tracesdk "go.opentelemetry.io/otel/sdk/trace"
)
// Exporter is an OpenTelemetry exporter. It exports both traces and metrics
// from OpenTelemetry instrumented to code using OpenTelemetry protocol
// buffers to a configurable receiver.
type Exporter struct {
cfg config
driver ProtocolDriver
mu sync.RWMutex
started bool
startOnce sync.Once
stopOnce sync.Once
}
var _ tracesdk.SpanExporter = (*Exporter)(nil)
var _ metricsdk.Exporter = (*Exporter)(nil)
// NewExporter constructs a new Exporter and starts it.
func NewExporter(ctx context.Context, driver ProtocolDriver, opts ...ExporterOption) (*Exporter, error) {
exp := NewUnstartedExporter(driver, opts...)
if err := exp.Start(ctx); err != nil {
return nil, err
}
return exp, nil
}
// NewUnstartedExporter constructs a new Exporter and does not start it.
func NewUnstartedExporter(driver ProtocolDriver, opts ...ExporterOption) *Exporter {
cfg := config{
// Note: the default ExportKindSelector is specified
// as Cumulative:
// https://github.com/open-telemetry/opentelemetry-specification/issues/731
exportKindSelector: metricsdk.CumulativeExportKindSelector(),
}
for _, opt := range opts {
opt(&cfg)
}
return &Exporter{
cfg: cfg,
driver: driver,
}
}
var (
errAlreadyStarted = errors.New("already started")
)
// Start establishes connections to the OpenTelemetry collector. Starting an
// already started exporter returns an error.
func (e *Exporter) Start(ctx context.Context) error {
var err = errAlreadyStarted
e.startOnce.Do(func() {
e.mu.Lock()
e.started = true
e.mu.Unlock()
err = e.driver.Start(ctx)
})
return err
}
// Shutdown closes all connections and releases resources currently being used
// by the exporter. If the exporter is not started this does nothing. A shut
// down exporter can't be started again. Shutting down an already shut down
// exporter does nothing.
func (e *Exporter) Shutdown(ctx context.Context) error {
e.mu.RLock()
started := e.started
e.mu.RUnlock()
if !started {
return nil
}
var err error
e.stopOnce.Do(func() {
err = e.driver.Stop(ctx)
e.mu.Lock()
e.started = false
e.mu.Unlock()
})
return err
}
// Export transforms and batches metric Records into OTLP Metrics and
// transmits them to the configured collector.
func (e *Exporter) Export(parent context.Context, cps metricsdk.CheckpointSet) error {
return e.driver.ExportMetrics(parent, cps, e.cfg.exportKindSelector)
}
// ExportKindFor reports back to the OpenTelemetry SDK sending this Exporter
// metric telemetry that it needs to be provided in a configured format.
func (e *Exporter) ExportKindFor(desc *metric.Descriptor, kind aggregation.Kind) metricsdk.ExportKind {
return e.cfg.exportKindSelector.ExportKindFor(desc, kind)
}
// ExportSpans transforms and batches trace SpanSnapshots into OTLP Trace and
// transmits them to the configured collector.
func (e *Exporter) ExportSpans(ctx context.Context, ss []*tracesdk.SpanSnapshot) error {
return e.driver.ExportTraces(ctx, ss)
}
// NewExportPipeline sets up a complete export pipeline
// with the recommended TracerProvider setup.
func NewExportPipeline(ctx context.Context, driver ProtocolDriver, exporterOpts ...ExporterOption) (*Exporter,
*sdktrace.TracerProvider, *basic.Controller, error) {
exp, err := NewExporter(ctx, driver, exporterOpts...)
if err != nil {
return nil, nil, nil, err
}
tracerProvider := sdktrace.NewTracerProvider(
sdktrace.WithBatcher(exp),
)
cntr := basic.New(
processor.New(
simple.NewWithInexpensiveDistribution(),
exp,
),
)
return exp, tracerProvider, cntr, nil
}
// InstallNewPipeline instantiates a NewExportPipeline with the
// recommended configuration and registers it globally.
func InstallNewPipeline(ctx context.Context, driver ProtocolDriver, exporterOpts ...ExporterOption) (*Exporter,
*sdktrace.TracerProvider, *basic.Controller, error) {
exp, tp, cntr, err := NewExportPipeline(ctx, driver, exporterOpts...)
if err != nil {
return nil, nil, nil, err
}
otel.SetTracerProvider(tp)
err = cntr.Start(ctx)
if err != nil {
return nil, nil, nil, err
}
return exp, tp, cntr, err
}

278
vendor/go.opentelemetry.io/otel/exporters/otlp/otlpgrpc/connection.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package otlpgrpc
import (
"context"
"math/rand"
"sync"
"sync/atomic"
"time"
"unsafe"
"google.golang.org/grpc/encoding/gzip"
"go.opentelemetry.io/otel/exporters/otlp"
"go.opentelemetry.io/otel/exporters/otlp/internal/otlpconfig"
"google.golang.org/grpc"
"google.golang.org/grpc/metadata"
)
type connection struct {
// Ensure pointer is 64-bit aligned for atomic operations on both 32 and 64 bit machines.
lastConnectErrPtr unsafe.Pointer
// mu protects the connection as it is accessed by the
// exporter goroutines and background connection goroutine
mu sync.Mutex
cc *grpc.ClientConn
// these fields are read-only after constructor is finished
cfg otlpconfig.Config
sCfg otlpconfig.SignalConfig
metadata metadata.MD
newConnectionHandler func(cc *grpc.ClientConn)
// these channels are created once
disconnectedCh chan bool
backgroundConnectionDoneCh chan struct{}
stopCh chan struct{}
// this is for tests, so they can replace the closing
// routine without a worry of modifying some global variable
// or changing it back to original after the test is done
closeBackgroundConnectionDoneCh func(ch chan struct{})
}
func newConnection(cfg otlpconfig.Config, sCfg otlpconfig.SignalConfig, handler func(cc *grpc.ClientConn)) *connection {
c := new(connection)
c.newConnectionHandler = handler
c.cfg = cfg
c.sCfg = sCfg
if len(c.sCfg.Headers) > 0 {
c.metadata = metadata.New(c.sCfg.Headers)
}
c.closeBackgroundConnectionDoneCh = func(ch chan struct{}) {
close(ch)
}
return c
}
func (c *connection) startConnection(ctx context.Context) {
c.stopCh = make(chan struct{})
c.disconnectedCh = make(chan bool, 1)
c.backgroundConnectionDoneCh = make(chan struct{})
if err := c.connect(ctx); err == nil {
c.setStateConnected()
} else {
c.setStateDisconnected(err)
}
go c.indefiniteBackgroundConnection()
}
func (c *connection) lastConnectError() error {
errPtr := (*error)(atomic.LoadPointer(&c.lastConnectErrPtr))
if errPtr == nil {
return nil
}
return *errPtr
}
func (c *connection) saveLastConnectError(err error) {
var errPtr *error
if err != nil {
errPtr = &err
}
atomic.StorePointer(&c.lastConnectErrPtr, unsafe.Pointer(errPtr))
}
func (c *connection) setStateDisconnected(err error) {
c.saveLastConnectError(err)
select {
case c.disconnectedCh <- true:
default:
}
c.newConnectionHandler(nil)
}
func (c *connection) setStateConnected() {
c.saveLastConnectError(nil)
}
func (c *connection) connected() bool {
return c.lastConnectError() == nil
}
const defaultConnReattemptPeriod = 10 * time.Second
func (c *connection) indefiniteBackgroundConnection() {
defer func() {
c.closeBackgroundConnectionDoneCh(c.backgroundConnectionDoneCh)
}()
connReattemptPeriod := c.cfg.ReconnectionPeriod
if connReattemptPeriod <= 0 {
connReattemptPeriod = defaultConnReattemptPeriod
}
// No strong seeding required, nano time can
// already help with pseudo uniqueness.
rng := rand.New(rand.NewSource(time.Now().UnixNano() + rand.Int63n(1024)))
// maxJitterNanos: 70% of the connectionReattemptPeriod
maxJitterNanos := int64(0.7 * float64(connReattemptPeriod))
for {
// Otherwise these will be the normal scenarios to enable
// reconnection if we trip out.
// 1. If we've stopped, return entirely
// 2. Otherwise block until we are disconnected, and
// then retry connecting
select {
case <-c.stopCh:
return
case <-c.disconnectedCh:
// Quickly check if we haven't stopped at the
// same time.
select {
case <-c.stopCh:
return
default:
}
// Normal scenario that we'll wait for
}
if err := c.connect(context.Background()); err == nil {
c.setStateConnected()
} else {
// this code is unreachable in most cases
// c.connect does not establish connection
c.setStateDisconnected(err)
}
// Apply some jitter to avoid lockstep retrials of other
// collector-exporters. Lockstep retrials could result in an
// innocent DDOS, by clogging the machine's resources and network.
jitter := time.Duration(rng.Int63n(maxJitterNanos))
select {
case <-c.stopCh:
return
case <-time.After(connReattemptPeriod + jitter):
}
}
}
func (c *connection) connect(ctx context.Context) error {
cc, err := c.dialToCollector(ctx)
if err != nil {
return err
}
c.setConnection(cc)
c.newConnectionHandler(cc)
return nil
}
// setConnection sets cc as the client connection and returns true if
// the connection state changed.
func (c *connection) setConnection(cc *grpc.ClientConn) bool {
c.mu.Lock()
defer c.mu.Unlock()
// If previous clientConn is same as the current then just return.
// This doesn't happen right now as this func is only called with new ClientConn.
// It is more about future-proofing.
if c.cc == cc {
return false
}
// If the previous clientConn was non-nil, close it
if c.cc != nil {
_ = c.cc.Close()
}
c.cc = cc
return true
}
func (c *connection) dialToCollector(ctx context.Context) (*grpc.ClientConn, error) {
dialOpts := []grpc.DialOption{}
if c.cfg.ServiceConfig != "" {
dialOpts = append(dialOpts, grpc.WithDefaultServiceConfig(c.cfg.ServiceConfig))
}
if c.sCfg.GRPCCredentials != nil {
dialOpts = append(dialOpts, grpc.WithTransportCredentials(c.sCfg.GRPCCredentials))
} else if c.sCfg.Insecure {
dialOpts = append(dialOpts, grpc.WithInsecure())
}
if c.sCfg.Compression == otlp.GzipCompression {
dialOpts = append(dialOpts, grpc.WithDefaultCallOptions(grpc.UseCompressor(gzip.Name)))
}
if len(c.cfg.DialOptions) != 0 {
dialOpts = append(dialOpts, c.cfg.DialOptions...)
}
ctx, cancel := c.contextWithStop(ctx)
defer cancel()
ctx = c.contextWithMetadata(ctx)
return grpc.DialContext(ctx, c.sCfg.Endpoint, dialOpts...)
}
func (c *connection) contextWithMetadata(ctx context.Context) context.Context {
if c.metadata.Len() > 0 {
return metadata.NewOutgoingContext(ctx, c.metadata)
}
return ctx
}
func (c *connection) shutdown(ctx context.Context) error {
close(c.stopCh)
// Ensure that the backgroundConnector returns
select {
case <-c.backgroundConnectionDoneCh:
case <-ctx.Done():
return ctx.Err()
}
c.mu.Lock()
cc := c.cc
c.cc = nil
c.mu.Unlock()
if cc != nil {
return cc.Close()
}
return nil
}
func (c *connection) contextWithStop(ctx context.Context) (context.Context, context.CancelFunc) {
// Unify the parent context Done signal with the connection's
// stop channel.
ctx, cancel := context.WithCancel(ctx)
go func(ctx context.Context, cancel context.CancelFunc) {
select {
case <-ctx.Done():
// Nothing to do, either cancelled or deadline
// happened.
case <-c.stopCh:
cancel()
}
}(ctx, cancel)
return ctx, cancel
}

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vendor/go.opentelemetry.io/otel/exporters/otlp/otlpgrpc/doc.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/*
Package otlpgrpc provides an implementation of otlp.ProtocolDriver
that connects to the collector and sends traces and metrics using
gRPC.
This package is currently in a pre-GA phase. Backwards incompatible
changes may be introduced in subsequent minor version releases as we
work to track the evolving OpenTelemetry specification and user
feedback.
*/
package otlpgrpc // import "go.opentelemetry.io/otel/exporters/otlp/otlpgrpc"

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vendor/go.opentelemetry.io/otel/exporters/otlp/otlpgrpc/driver.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package otlpgrpc // import "go.opentelemetry.io/otel/exporters/otlp/otlpgrpc"
import (
"context"
"errors"
"fmt"
"sync"
"go.opentelemetry.io/otel/exporters/otlp/internal/otlpconfig"
"google.golang.org/grpc"
"go.opentelemetry.io/otel/exporters/otlp"
"go.opentelemetry.io/otel/exporters/otlp/internal/transform"
metricsdk "go.opentelemetry.io/otel/sdk/export/metric"
tracesdk "go.opentelemetry.io/otel/sdk/trace"
colmetricpb "go.opentelemetry.io/proto/otlp/collector/metrics/v1"
coltracepb "go.opentelemetry.io/proto/otlp/collector/trace/v1"
metricpb "go.opentelemetry.io/proto/otlp/metrics/v1"
tracepb "go.opentelemetry.io/proto/otlp/trace/v1"
)
type driver struct {
metricsDriver metricsDriver
tracesDriver tracesDriver
}
type metricsDriver struct {
connection *connection
lock sync.Mutex
metricsClient colmetricpb.MetricsServiceClient
}
type tracesDriver struct {
connection *connection
lock sync.Mutex
tracesClient coltracepb.TraceServiceClient
}
var (
errNoClient = errors.New("no client")
)
// NewDriver creates a new gRPC protocol driver.
func NewDriver(opts ...Option) otlp.ProtocolDriver {
cfg := otlpconfig.NewDefaultConfig()
otlpconfig.ApplyGRPCEnvConfigs(&cfg)
for _, opt := range opts {
opt.ApplyGRPCOption(&cfg)
}
d := &driver{}
d.tracesDriver = tracesDriver{
connection: newConnection(cfg, cfg.Traces, d.tracesDriver.handleNewConnection),
}
d.metricsDriver = metricsDriver{
connection: newConnection(cfg, cfg.Metrics, d.metricsDriver.handleNewConnection),
}
return d
}
func (md *metricsDriver) handleNewConnection(cc *grpc.ClientConn) {
md.lock.Lock()
defer md.lock.Unlock()
if cc != nil {
md.metricsClient = colmetricpb.NewMetricsServiceClient(cc)
} else {
md.metricsClient = nil
}
}
func (td *tracesDriver) handleNewConnection(cc *grpc.ClientConn) {
td.lock.Lock()
defer td.lock.Unlock()
if cc != nil {
td.tracesClient = coltracepb.NewTraceServiceClient(cc)
} else {
td.tracesClient = nil
}
}
// Start implements otlp.ProtocolDriver. It establishes a connection
// to the collector.
func (d *driver) Start(ctx context.Context) error {
d.tracesDriver.connection.startConnection(ctx)
d.metricsDriver.connection.startConnection(ctx)
return nil
}
// Stop implements otlp.ProtocolDriver. It shuts down the connection
// to the collector.
func (d *driver) Stop(ctx context.Context) error {
if err := d.tracesDriver.connection.shutdown(ctx); err != nil {
return err
}
return d.metricsDriver.connection.shutdown(ctx)
}
// ExportMetrics implements otlp.ProtocolDriver. It transforms metrics
// to protobuf binary format and sends the result to the collector.
func (d *driver) ExportMetrics(ctx context.Context, cps metricsdk.CheckpointSet, selector metricsdk.ExportKindSelector) error {
if !d.metricsDriver.connection.connected() {
return fmt.Errorf("metrics exporter is disconnected from the server %s: %w", d.metricsDriver.connection.sCfg.Endpoint, d.metricsDriver.connection.lastConnectError())
}
ctx, cancel := d.metricsDriver.connection.contextWithStop(ctx)
defer cancel()
ctx, tCancel := context.WithTimeout(ctx, d.metricsDriver.connection.sCfg.Timeout)
defer tCancel()
rms, err := transform.CheckpointSet(ctx, selector, cps, 1)
if err != nil {
return err
}
if len(rms) == 0 {
return nil
}
return d.metricsDriver.uploadMetrics(ctx, rms)
}
func (md *metricsDriver) uploadMetrics(ctx context.Context, protoMetrics []*metricpb.ResourceMetrics) error {
ctx = md.connection.contextWithMetadata(ctx)
err := func() error {
md.lock.Lock()
defer md.lock.Unlock()
if md.metricsClient == nil {
return errNoClient
}
_, err := md.metricsClient.Export(ctx, &colmetricpb.ExportMetricsServiceRequest{
ResourceMetrics: protoMetrics,
})
return err
}()
if err != nil {
md.connection.setStateDisconnected(err)
}
return err
}
// ExportTraces implements otlp.ProtocolDriver. It transforms spans to
// protobuf binary format and sends the result to the collector.
func (d *driver) ExportTraces(ctx context.Context, ss []*tracesdk.SpanSnapshot) error {
if !d.tracesDriver.connection.connected() {
return fmt.Errorf("traces exporter is disconnected from the server %s: %w", d.tracesDriver.connection.sCfg.Endpoint, d.tracesDriver.connection.lastConnectError())
}
ctx, cancel := d.tracesDriver.connection.contextWithStop(ctx)
defer cancel()
ctx, tCancel := context.WithTimeout(ctx, d.tracesDriver.connection.sCfg.Timeout)
defer tCancel()
protoSpans := transform.SpanData(ss)
if len(protoSpans) == 0 {
return nil
}
return d.tracesDriver.uploadTraces(ctx, protoSpans)
}
func (td *tracesDriver) uploadTraces(ctx context.Context, protoSpans []*tracepb.ResourceSpans) error {
ctx = td.connection.contextWithMetadata(ctx)
err := func() error {
td.lock.Lock()
defer td.lock.Unlock()
if td.tracesClient == nil {
return errNoClient
}
_, err := td.tracesClient.Export(ctx, &coltracepb.ExportTraceServiceRequest{
ResourceSpans: protoSpans,
})
return err
}()
if err != nil {
td.connection.setStateDisconnected(err)
}
return err
}

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vendor/go.opentelemetry.io/otel/exporters/otlp/otlpgrpc/options.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package otlpgrpc
import (
"fmt"
"time"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/exporters/otlp"
"go.opentelemetry.io/otel/exporters/otlp/internal/otlpconfig"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
)
// Option applies an option to the gRPC driver.
type Option interface {
otlpconfig.GRPCOption
}
// WithInsecure disables client transport security for the exporter's gRPC connection
// just like grpc.WithInsecure() https://pkg.go.dev/google.golang.org/grpc#WithInsecure
// does. Note, by default, client security is required unless WithInsecure is used.
func WithInsecure() Option {
return otlpconfig.WithInsecure()
}
// WithTracesInsecure disables client transport security for the traces exporter's gRPC connection
// just like grpc.WithInsecure() https://pkg.go.dev/google.golang.org/grpc#WithInsecure
// does. Note, by default, client security is required unless WithInsecure is used.
func WithTracesInsecure() Option {
return otlpconfig.WithInsecureTraces()
}
// WithInsecureMetrics disables client transport security for the metrics exporter's gRPC connection
// just like grpc.WithInsecure() https://pkg.go.dev/google.golang.org/grpc#WithInsecure
// does. Note, by default, client security is required unless WithInsecure is used.
func WithInsecureMetrics() Option {
return otlpconfig.WithInsecureMetrics()
}
// WithEndpoint allows one to set the endpoint that the exporter will
// connect to the collector on. If unset, it will instead try to use
// connect to DefaultCollectorHost:DefaultCollectorPort.
func WithEndpoint(endpoint string) Option {
return otlpconfig.WithEndpoint(endpoint)
}
// WithTracesEndpoint allows one to set the traces endpoint that the exporter will
// connect to the collector on. If unset, it will instead try to use
// connect to DefaultCollectorHost:DefaultCollectorPort.
func WithTracesEndpoint(endpoint string) Option {
return otlpconfig.WithTracesEndpoint(endpoint)
}
// WithMetricsEndpoint allows one to set the metrics endpoint that the exporter will
// connect to the collector on. If unset, it will instead try to use
// connect to DefaultCollectorHost:DefaultCollectorPort.
func WithMetricsEndpoint(endpoint string) Option {
return otlpconfig.WithMetricsEndpoint(endpoint)
}
// WithReconnectionPeriod allows one to set the delay between next connection attempt
// after failing to connect with the collector.
func WithReconnectionPeriod(rp time.Duration) otlpconfig.GRPCOption {
return otlpconfig.NewGRPCOption(func(cfg *otlpconfig.Config) {
cfg.ReconnectionPeriod = rp
})
}
func compressorToCompression(compressor string) otlp.Compression {
switch compressor {
case "gzip":
return otlp.GzipCompression
}
otel.Handle(fmt.Errorf("invalid compression type: '%s', using no compression as default", compressor))
return otlp.NoCompression
}
// WithCompressor will set the compressor for the gRPC client to use when sending requests.
// It is the responsibility of the caller to ensure that the compressor set has been registered
// with google.golang.org/grpc/encoding. This can be done by encoding.RegisterCompressor. Some
// compressors auto-register on import, such as gzip, which can be registered by calling
// `import _ "google.golang.org/grpc/encoding/gzip"`.
func WithCompressor(compressor string) Option {
return otlpconfig.WithCompression(compressorToCompression(compressor))
}
// WithTracesCompression will set the compressor for the gRPC client to use when sending traces requests.
// It is the responsibility of the caller to ensure that the compressor set has been registered
// with google.golang.org/grpc/encoding. This can be done by encoding.RegisterCompressor. Some
// compressors auto-register on import, such as gzip, which can be registered by calling
// `import _ "google.golang.org/grpc/encoding/gzip"`.
func WithTracesCompression(compressor string) Option {
return otlpconfig.WithTracesCompression(compressorToCompression(compressor))
}
// WithMetricsCompression will set the compressor for the gRPC client to use when sending metrics requests.
// It is the responsibility of the caller to ensure that the compressor set has been registered
// with google.golang.org/grpc/encoding. This can be done by encoding.RegisterCompressor. Some
// compressors auto-register on import, such as gzip, which can be registered by calling
// `import _ "google.golang.org/grpc/encoding/gzip"`.
func WithMetricsCompression(compressor string) Option {
return otlpconfig.WithMetricsCompression(compressorToCompression(compressor))
}
// WithHeaders will send the provided headers with gRPC requests.
func WithHeaders(headers map[string]string) Option {
return otlpconfig.WithHeaders(headers)
}
// WithTracesHeaders will send the provided headers with gRPC traces requests.
func WithTracesHeaders(headers map[string]string) Option {
return otlpconfig.WithTracesHeaders(headers)
}
// WithMetricsHeaders will send the provided headers with gRPC metrics requests.
func WithMetricsHeaders(headers map[string]string) Option {
return otlpconfig.WithMetricsHeaders(headers)
}
// WithTLSCredentials allows the connection to use TLS credentials
// when talking to the server. It takes in grpc.TransportCredentials instead
// of say a Certificate file or a tls.Certificate, because the retrieving of
// these credentials can be done in many ways e.g. plain file, in code tls.Config
// or by certificate rotation, so it is up to the caller to decide what to use.
func WithTLSCredentials(creds credentials.TransportCredentials) Option {
return otlpconfig.NewGRPCOption(func(cfg *otlpconfig.Config) {
cfg.Traces.GRPCCredentials = creds
cfg.Metrics.GRPCCredentials = creds
})
}
// WithTracesTLSCredentials allows the connection to use TLS credentials
// when talking to the traces server. It takes in grpc.TransportCredentials instead
// of say a Certificate file or a tls.Certificate, because the retrieving of
// these credentials can be done in many ways e.g. plain file, in code tls.Config
// or by certificate rotation, so it is up to the caller to decide what to use.
func WithTracesTLSCredentials(creds credentials.TransportCredentials) Option {
return otlpconfig.NewGRPCOption(func(cfg *otlpconfig.Config) {
cfg.Traces.GRPCCredentials = creds
})
}
// WithMetricsTLSCredentials allows the connection to use TLS credentials
// when talking to the metrics server. It takes in grpc.TransportCredentials instead
// of say a Certificate file or a tls.Certificate, because the retrieving of
// these credentials can be done in many ways e.g. plain file, in code tls.Config
// or by certificate rotation, so it is up to the caller to decide what to use.
func WithMetricsTLSCredentials(creds credentials.TransportCredentials) Option {
return otlpconfig.NewGRPCOption(func(cfg *otlpconfig.Config) {
cfg.Metrics.GRPCCredentials = creds
})
}
// WithServiceConfig defines the default gRPC service config used.
func WithServiceConfig(serviceConfig string) Option {
return otlpconfig.NewGRPCOption(func(cfg *otlpconfig.Config) {
cfg.ServiceConfig = serviceConfig
})
}
// WithDialOption opens support to any grpc.DialOption to be used. If it conflicts
// with some other configuration the GRPC specified via the collector the ones here will
// take preference since they are set last.
func WithDialOption(opts ...grpc.DialOption) Option {
return otlpconfig.NewGRPCOption(func(cfg *otlpconfig.Config) {
cfg.DialOptions = opts
})
}
// WithTimeout tells the driver the max waiting time for the backend to process
// each spans or metrics batch. If unset, the default will be 10 seconds.
func WithTimeout(duration time.Duration) Option {
return otlpconfig.WithTimeout(duration)
}
// WithTracesTimeout tells the driver the max waiting time for the backend to process
// each spans batch. If unset, the default will be 10 seconds.
func WithTracesTimeout(duration time.Duration) Option {
return otlpconfig.WithTracesTimeout(duration)
}
// WithMetricsTimeout tells the driver the max waiting time for the backend to process
// each metrics batch. If unset, the default will be 10 seconds.
func WithMetricsTimeout(duration time.Duration) Option {
return otlpconfig.WithMetricsTimeout(duration)
}

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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package otlp // import "go.opentelemetry.io/otel/exporters/otlp"
import (
"context"
"sync"
metricsdk "go.opentelemetry.io/otel/sdk/export/metric"
tracesdk "go.opentelemetry.io/otel/sdk/trace"
)
// ProtocolDriver is an interface used by OTLP exporter. It's
// responsible for connecting to and disconnecting from the collector,
// and for transforming traces and metrics into wire format and
// transmitting them to the collector.
type ProtocolDriver interface {
// Start should establish connection(s) to endpoint(s). It is
// called just once by the exporter, so the implementation
// does not need to worry about idempotence and locking.
Start(ctx context.Context) error
// Stop should close the connections. The function is called
// only once by the exporter, so the implementation does not
// need to worry about idempotence, but it may be called
// concurrently with ExportMetrics or ExportTraces, so proper
// locking is required. The function serves as a
// synchronization point - after the function returns, the
// process of closing connections is assumed to be finished.
Stop(ctx context.Context) error
// ExportMetrics should transform the passed metrics to the
// wire format and send it to the collector. May be called
// concurrently with ExportTraces, so the manager needs to
// take this into account by doing proper locking.
ExportMetrics(ctx context.Context, cps metricsdk.CheckpointSet, selector metricsdk.ExportKindSelector) error
// ExportTraces should transform the passed traces to the wire
// format and send it to the collector. May be called
// concurrently with ExportMetrics, so the manager needs to
// take this into account by doing proper locking.
ExportTraces(ctx context.Context, ss []*tracesdk.SpanSnapshot) error
}
// SplitConfig is used to configure a split driver.
type SplitConfig struct {
// ForMetrics driver will be used for sending metrics to the
// collector.
ForMetrics ProtocolDriver
// ForTraces driver will be used for sending spans to the
// collector.
ForTraces ProtocolDriver
}
type splitDriver struct {
metric ProtocolDriver
trace ProtocolDriver
}
var _ ProtocolDriver = (*splitDriver)(nil)
// NewSplitDriver creates a protocol driver which contains two other
// protocol drivers and will forward traces to one of them and metrics
// to another.
func NewSplitDriver(cfg SplitConfig) ProtocolDriver {
return &splitDriver{
metric: cfg.ForMetrics,
trace: cfg.ForTraces,
}
}
// Start implements ProtocolDriver. It starts both drivers at the same
// time.
func (d *splitDriver) Start(ctx context.Context) error {
wg := sync.WaitGroup{}
wg.Add(2)
var (
metricErr error
traceErr error
)
go func() {
defer wg.Done()
metricErr = d.metric.Start(ctx)
}()
go func() {
defer wg.Done()
traceErr = d.trace.Start(ctx)
}()
wg.Wait()
if metricErr != nil {
return metricErr
}
if traceErr != nil {
return traceErr
}
return nil
}
// Stop implements ProtocolDriver. It stops both drivers at the same
// time.
func (d *splitDriver) Stop(ctx context.Context) error {
wg := sync.WaitGroup{}
wg.Add(2)
var (
metricErr error
traceErr error
)
go func() {
defer wg.Done()
metricErr = d.metric.Stop(ctx)
}()
go func() {
defer wg.Done()
traceErr = d.trace.Stop(ctx)
}()
wg.Wait()
if metricErr != nil {
return metricErr
}
if traceErr != nil {
return traceErr
}
return nil
}
// ExportMetrics implements ProtocolDriver. It forwards the call to
// the driver used for sending metrics.
func (d *splitDriver) ExportMetrics(ctx context.Context, cps metricsdk.CheckpointSet, selector metricsdk.ExportKindSelector) error {
return d.metric.ExportMetrics(ctx, cps, selector)
}
// ExportTraces implements ProtocolDriver. It forwards the call to the
// driver used for sending spans.
func (d *splitDriver) ExportTraces(ctx context.Context, ss []*tracesdk.SpanSnapshot) error {
return d.trace.ExportTraces(ctx, ss)
}

41
vendor/go.opentelemetry.io/otel/get_main_pkgs.sh generated vendored Normal file
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@ -0,0 +1,41 @@
#!/usr/bin/env bash
# Copyright The OpenTelemetry Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
set -euo pipefail
top_dir='.'
if [[ $# -gt 0 ]]; then
top_dir="${1}"
fi
p=$(pwd)
mod_dirs=()
# Note `mapfile` does not exist in older bash versions:
# https://stackoverflow.com/questions/41475261/need-alternative-to-readarray-mapfile-for-script-on-older-version-of-bash
while IFS= read -r line; do
mod_dirs+=("$line")
done < <(find "${top_dir}" -type f -name 'go.mod' -exec dirname {} \; | sort)
for mod_dir in "${mod_dirs[@]}"; do
cd "${mod_dir}"
while IFS= read -r line; do
echo ".${line#${p}}"
done < <(go list --find -f '{{.Name}}|{{.Dir}}' ./... | grep '^main|' | cut -f 2- -d '|')
cd "${p}"
done

55
vendor/go.opentelemetry.io/otel/go.mod generated vendored Normal file
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@ -0,0 +1,55 @@
module go.opentelemetry.io/otel
go 1.14
require (
github.com/google/go-cmp v0.5.5
github.com/stretchr/testify v1.7.0
go.opentelemetry.io/otel/metric v0.20.0
go.opentelemetry.io/otel/oteltest v0.20.0
go.opentelemetry.io/otel/trace v0.20.0
)
replace go.opentelemetry.io/otel => ./
replace go.opentelemetry.io/otel/bridge/opencensus => ./bridge/opencensus
replace go.opentelemetry.io/otel/bridge/opentracing => ./bridge/opentracing
replace go.opentelemetry.io/otel/example/jaeger => ./example/jaeger
replace go.opentelemetry.io/otel/example/namedtracer => ./example/namedtracer
replace go.opentelemetry.io/otel/example/opencensus => ./example/opencensus
replace go.opentelemetry.io/otel/example/otel-collector => ./example/otel-collector
replace go.opentelemetry.io/otel/example/prom-collector => ./example/prom-collector
replace go.opentelemetry.io/otel/example/prometheus => ./example/prometheus
replace go.opentelemetry.io/otel/example/zipkin => ./example/zipkin
replace go.opentelemetry.io/otel/exporters/metric/prometheus => ./exporters/metric/prometheus
replace go.opentelemetry.io/otel/exporters/otlp => ./exporters/otlp
replace go.opentelemetry.io/otel/exporters/stdout => ./exporters/stdout
replace go.opentelemetry.io/otel/exporters/trace/jaeger => ./exporters/trace/jaeger
replace go.opentelemetry.io/otel/exporters/trace/zipkin => ./exporters/trace/zipkin
replace go.opentelemetry.io/otel/internal/tools => ./internal/tools
replace go.opentelemetry.io/otel/sdk => ./sdk
replace go.opentelemetry.io/otel/metric => ./metric
replace go.opentelemetry.io/otel/oteltest => ./oteltest
replace go.opentelemetry.io/otel/sdk/export/metric => ./sdk/export/metric
replace go.opentelemetry.io/otel/sdk/metric => ./sdk/metric
replace go.opentelemetry.io/otel/trace => ./trace

15
vendor/go.opentelemetry.io/otel/go.sum generated vendored Normal file
View File

@ -0,0 +1,15 @@
github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

89
vendor/go.opentelemetry.io/otel/handler.go generated vendored Normal file
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@ -0,0 +1,89 @@
// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package otel // import "go.opentelemetry.io/otel"
import (
"log"
"os"
"sync"
"sync/atomic"
)
var (
// globalErrorHandler provides an ErrorHandler that can be used
// throughout an OpenTelemetry instrumented project. When a user
// specified ErrorHandler is registered (`SetErrorHandler`) all calls to
// `Handle` and will be delegated to the registered ErrorHandler.
globalErrorHandler = &loggingErrorHandler{
l: log.New(os.Stderr, "", log.LstdFlags),
}
// delegateErrorHandlerOnce ensures that a user provided ErrorHandler is
// only ever registered once.
delegateErrorHandlerOnce sync.Once
// Comiple time check that loggingErrorHandler implements ErrorHandler.
_ ErrorHandler = (*loggingErrorHandler)(nil)
)
// loggingErrorHandler logs all errors to STDERR.
type loggingErrorHandler struct {
delegate atomic.Value
l *log.Logger
}
// setDelegate sets the ErrorHandler delegate if one is not already set.
func (h *loggingErrorHandler) setDelegate(d ErrorHandler) {
if h.delegate.Load() != nil {
// Delegate already registered
return
}
h.delegate.Store(d)
}
// Handle implements ErrorHandler.
func (h *loggingErrorHandler) Handle(err error) {
if d := h.delegate.Load(); d != nil {
d.(ErrorHandler).Handle(err)
return
}
h.l.Print(err)
}
// GetErrorHandler returns the global ErrorHandler instance. If no ErrorHandler
// instance has been set (`SetErrorHandler`), the default ErrorHandler which
// logs errors to STDERR is returned.
func GetErrorHandler() ErrorHandler {
return globalErrorHandler
}
// SetErrorHandler sets the global ErrorHandler to be h.
func SetErrorHandler(h ErrorHandler) {
delegateErrorHandlerOnce.Do(func() {
current := GetErrorHandler()
if current == h {
return
}
if internalHandler, ok := current.(*loggingErrorHandler); ok {
internalHandler.setDelegate(h)
}
})
}
// Handle is a convience function for ErrorHandler().Handle(err)
func Handle(err error) {
GetErrorHandler().Handle(err)
}

338
vendor/go.opentelemetry.io/otel/internal/baggage/baggage.go generated vendored Normal file
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@ -0,0 +1,338 @@
// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package baggage provides types and functions to manage W3C Baggage.
package baggage
import (
"context"
"go.opentelemetry.io/otel/attribute"
)
type rawMap map[attribute.Key]attribute.Value
type keySet map[attribute.Key]struct{}
// Map is an immutable storage for correlations.
type Map struct {
m rawMap
}
// MapUpdate contains information about correlation changes to be
// made.
type MapUpdate struct {
// DropSingleK contains a single key to be dropped from
// correlations. Use this to avoid an overhead of a slice
// allocation if there is only one key to drop.
DropSingleK attribute.Key
// DropMultiK contains all the keys to be dropped from
// correlations.
DropMultiK []attribute.Key
// SingleKV contains a single key-value pair to be added to
// correlations. Use this to avoid an overhead of a slice
// allocation if there is only one key-value pair to add.
SingleKV attribute.KeyValue
// MultiKV contains all the key-value pairs to be added to
// correlations.
MultiKV []attribute.KeyValue
}
func newMap(raw rawMap) Map {
return Map{
m: raw,
}
}
// NewEmptyMap creates an empty correlations map.
func NewEmptyMap() Map {
return newMap(nil)
}
// NewMap creates a map with the contents of the update applied. In
// this function, having an update with DropSingleK or DropMultiK
// makes no sense - those fields are effectively ignored.
func NewMap(update MapUpdate) Map {
return NewEmptyMap().Apply(update)
}
// Apply creates a copy of the map with the contents of the update
// applied. Apply will first drop the keys from DropSingleK and
// DropMultiK, then add key-value pairs from SingleKV and MultiKV.
func (m Map) Apply(update MapUpdate) Map {
delSet, addSet := getModificationSets(update)
mapSize := getNewMapSize(m.m, delSet, addSet)
r := make(rawMap, mapSize)
for k, v := range m.m {
// do not copy items we want to drop
if _, ok := delSet[k]; ok {
continue
}
// do not copy items we would overwrite
if _, ok := addSet[k]; ok {
continue
}
r[k] = v
}
if update.SingleKV.Key.Defined() {
r[update.SingleKV.Key] = update.SingleKV.Value
}
for _, kv := range update.MultiKV {
r[kv.Key] = kv.Value
}
if len(r) == 0 {
r = nil
}
return newMap(r)
}
func getModificationSets(update MapUpdate) (delSet, addSet keySet) {
deletionsCount := len(update.DropMultiK)
if update.DropSingleK.Defined() {
deletionsCount++
}
if deletionsCount > 0 {
delSet = make(map[attribute.Key]struct{}, deletionsCount)
for _, k := range update.DropMultiK {
delSet[k] = struct{}{}
}
if update.DropSingleK.Defined() {
delSet[update.DropSingleK] = struct{}{}
}
}
additionsCount := len(update.MultiKV)
if update.SingleKV.Key.Defined() {
additionsCount++
}
if additionsCount > 0 {
addSet = make(map[attribute.Key]struct{}, additionsCount)
for _, k := range update.MultiKV {
addSet[k.Key] = struct{}{}
}
if update.SingleKV.Key.Defined() {
addSet[update.SingleKV.Key] = struct{}{}
}
}
return
}
func getNewMapSize(m rawMap, delSet, addSet keySet) int {
mapSizeDiff := 0
for k := range addSet {
if _, ok := m[k]; !ok {
mapSizeDiff++
}
}
for k := range delSet {
if _, ok := m[k]; ok {
if _, inAddSet := addSet[k]; !inAddSet {
mapSizeDiff--
}
}
}
return len(m) + mapSizeDiff
}
// Value gets a value from correlations map and returns a boolean
// value indicating whether the key exist in the map.
func (m Map) Value(k attribute.Key) (attribute.Value, bool) {
value, ok := m.m[k]
return value, ok
}
// HasValue returns a boolean value indicating whether the key exist
// in the map.
func (m Map) HasValue(k attribute.Key) bool {
_, has := m.Value(k)
return has
}
// Len returns a length of the map.
func (m Map) Len() int {
return len(m.m)
}
// Foreach calls a passed callback once on each key-value pair until
// all the key-value pairs of the map were iterated or the callback
// returns false, whichever happens first.
func (m Map) Foreach(f func(attribute.KeyValue) bool) {
for k, v := range m.m {
if !f(attribute.KeyValue{
Key: k,
Value: v,
}) {
return
}
}
}
type correlationsType struct{}
// SetHookFunc describes a type of a callback that is called when
// storing baggage in the context.
type SetHookFunc func(context.Context) context.Context
// GetHookFunc describes a type of a callback that is called when
// getting baggage from the context.
type GetHookFunc func(context.Context, Map) Map
// value under this key is either of type Map or correlationsData
var correlationsKey = &correlationsType{}
type correlationsData struct {
m Map
setHook SetHookFunc
getHook GetHookFunc
}
func (d correlationsData) isHookless() bool {
return d.setHook == nil && d.getHook == nil
}
type hookKind int
const (
hookKindSet hookKind = iota
hookKindGet
)
func (d *correlationsData) overrideHook(kind hookKind, setHook SetHookFunc, getHook GetHookFunc) {
switch kind {
case hookKindSet:
d.setHook = setHook
case hookKindGet:
d.getHook = getHook
}
}
// ContextWithSetHook installs a hook function that will be invoked
// every time ContextWithMap is called. To avoid unnecessary callback
// invocations (recursive or not), the callback can temporarily clear
// the hooks from the context with the ContextWithNoHooks function.
//
// Note that NewContext also calls ContextWithMap, so the hook will be
// invoked.
//
// Passing nil SetHookFunc creates a context with no set hook to call.
//
// This function should not be used by applications or libraries. It
// is mostly for interoperation with other observability APIs.
func ContextWithSetHook(ctx context.Context, hook SetHookFunc) context.Context {
return contextWithHook(ctx, hookKindSet, hook, nil)
}
// ContextWithGetHook installs a hook function that will be invoked
// every time MapFromContext is called. To avoid unnecessary callback
// invocations (recursive or not), the callback can temporarily clear
// the hooks from the context with the ContextWithNoHooks function.
//
// Note that NewContext also calls MapFromContext, so the hook will be
// invoked.
//
// Passing nil GetHookFunc creates a context with no get hook to call.
//
// This function should not be used by applications or libraries. It
// is mostly for interoperation with other observability APIs.
func ContextWithGetHook(ctx context.Context, hook GetHookFunc) context.Context {
return contextWithHook(ctx, hookKindGet, nil, hook)
}
func contextWithHook(ctx context.Context, kind hookKind, setHook SetHookFunc, getHook GetHookFunc) context.Context {
switch v := ctx.Value(correlationsKey).(type) {
case correlationsData:
v.overrideHook(kind, setHook, getHook)
if v.isHookless() {
return context.WithValue(ctx, correlationsKey, v.m)
}
return context.WithValue(ctx, correlationsKey, v)
case Map:
return contextWithOneHookAndMap(ctx, kind, setHook, getHook, v)
default:
m := NewEmptyMap()
return contextWithOneHookAndMap(ctx, kind, setHook, getHook, m)
}
}
func contextWithOneHookAndMap(ctx context.Context, kind hookKind, setHook SetHookFunc, getHook GetHookFunc, m Map) context.Context {
d := correlationsData{m: m}
d.overrideHook(kind, setHook, getHook)
if d.isHookless() {
return ctx
}
return context.WithValue(ctx, correlationsKey, d)
}
// ContextWithNoHooks creates a context with all the hooks
// disabled. Also returns old set and get hooks. This function can be
// used to temporarily clear the context from hooks and then reinstate
// them by calling ContextWithSetHook and ContextWithGetHook functions
// passing the hooks returned by this function.
//
// This function should not be used by applications or libraries. It
// is mostly for interoperation with other observability APIs.
func ContextWithNoHooks(ctx context.Context) (context.Context, SetHookFunc, GetHookFunc) {
switch v := ctx.Value(correlationsKey).(type) {
case correlationsData:
return context.WithValue(ctx, correlationsKey, v.m), v.setHook, v.getHook
default:
return ctx, nil, nil
}
}
// ContextWithMap returns a context with the Map entered into it.
func ContextWithMap(ctx context.Context, m Map) context.Context {
switch v := ctx.Value(correlationsKey).(type) {
case correlationsData:
v.m = m
ctx = context.WithValue(ctx, correlationsKey, v)
if v.setHook != nil {
ctx = v.setHook(ctx)
}
return ctx
default:
return context.WithValue(ctx, correlationsKey, m)
}
}
// ContextWithNoCorrelationData returns a context stripped of correlation
// data.
func ContextWithNoCorrelationData(ctx context.Context) context.Context {
return context.WithValue(ctx, correlationsKey, nil)
}
// NewContext returns a context with the map from passed context
// updated with the passed key-value pairs.
func NewContext(ctx context.Context, keyvalues ...attribute.KeyValue) context.Context {
return ContextWithMap(ctx, MapFromContext(ctx).Apply(MapUpdate{
MultiKV: keyvalues,
}))
}
// MapFromContext gets the current Map from a Context.
func MapFromContext(ctx context.Context) Map {
switch v := ctx.Value(correlationsKey).(type) {
case correlationsData:
if v.getHook != nil {
return v.getHook(ctx, v.m)
}
return v.m
case Map:
return v
default:
return NewEmptyMap()
}
}

348
vendor/go.opentelemetry.io/otel/internal/global/meter.go generated vendored Normal file
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@ -0,0 +1,348 @@
// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package global
import (
"context"
"sync"
"sync/atomic"
"unsafe"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/metric"
"go.opentelemetry.io/otel/metric/number"
"go.opentelemetry.io/otel/metric/registry"
)
// This file contains the forwarding implementation of MeterProvider used as
// the default global instance. Metric events using instruments provided by
// this implementation are no-ops until the first Meter implementation is set
// as the global provider.
//
// The implementation here uses Mutexes to maintain a list of active Meters in
// the MeterProvider and Instruments in each Meter, under the assumption that
// these interfaces are not performance-critical.
//
// We have the invariant that setDelegate() will be called before a new
// MeterProvider implementation is registered as the global provider. Mutexes
// in the MeterProvider and Meters ensure that each instrument has a delegate
// before the global provider is set.
//
// Bound instrument operations are implemented by delegating to the
// instrument after it is registered, with a sync.Once initializer to
// protect against races with Release().
//
// Metric uniqueness checking is implemented by calling the exported
// methods of the api/metric/registry package.
type meterKey struct {
Name, Version string
}
type meterProvider struct {
delegate metric.MeterProvider
// lock protects `delegate` and `meters`.
lock sync.Mutex
// meters maintains a unique entry for every named Meter
// that has been registered through the global instance.
meters map[meterKey]*meterEntry
}
type meterImpl struct {
delegate unsafe.Pointer // (*metric.MeterImpl)
lock sync.Mutex
syncInsts []*syncImpl
asyncInsts []*asyncImpl
}
type meterEntry struct {
unique metric.MeterImpl
impl meterImpl
}
type instrument struct {
descriptor metric.Descriptor
}
type syncImpl struct {
delegate unsafe.Pointer // (*metric.SyncImpl)
instrument
}
type asyncImpl struct {
delegate unsafe.Pointer // (*metric.AsyncImpl)
instrument
runner metric.AsyncRunner
}
// SyncImpler is implemented by all of the sync metric
// instruments.
type SyncImpler interface {
SyncImpl() metric.SyncImpl
}
// AsyncImpler is implemented by all of the async
// metric instruments.
type AsyncImpler interface {
AsyncImpl() metric.AsyncImpl
}
type syncHandle struct {
delegate unsafe.Pointer // (*metric.BoundInstrumentImpl)
inst *syncImpl
labels []attribute.KeyValue
initialize sync.Once
}
var _ metric.MeterProvider = &meterProvider{}
var _ metric.MeterImpl = &meterImpl{}
var _ metric.InstrumentImpl = &syncImpl{}
var _ metric.BoundSyncImpl = &syncHandle{}
var _ metric.AsyncImpl = &asyncImpl{}
func (inst *instrument) Descriptor() metric.Descriptor {
return inst.descriptor
}
// MeterProvider interface and delegation
func newMeterProvider() *meterProvider {
return &meterProvider{
meters: map[meterKey]*meterEntry{},
}
}
func (p *meterProvider) setDelegate(provider metric.MeterProvider) {
p.lock.Lock()
defer p.lock.Unlock()
p.delegate = provider
for key, entry := range p.meters {
entry.impl.setDelegate(key.Name, key.Version, provider)
}
p.meters = nil
}
func (p *meterProvider) Meter(instrumentationName string, opts ...metric.MeterOption) metric.Meter {
p.lock.Lock()
defer p.lock.Unlock()
if p.delegate != nil {
return p.delegate.Meter(instrumentationName, opts...)
}
key := meterKey{
Name: instrumentationName,
Version: metric.NewMeterConfig(opts...).InstrumentationVersion,
}
entry, ok := p.meters[key]
if !ok {
entry = &meterEntry{}
entry.unique = registry.NewUniqueInstrumentMeterImpl(&entry.impl)
p.meters[key] = entry
}
return metric.WrapMeterImpl(entry.unique, key.Name, metric.WithInstrumentationVersion(key.Version))
}
// Meter interface and delegation
func (m *meterImpl) setDelegate(name, version string, provider metric.MeterProvider) {
m.lock.Lock()
defer m.lock.Unlock()
d := new(metric.MeterImpl)
*d = provider.Meter(name, metric.WithInstrumentationVersion(version)).MeterImpl()
m.delegate = unsafe.Pointer(d)
for _, inst := range m.syncInsts {
inst.setDelegate(*d)
}
m.syncInsts = nil
for _, obs := range m.asyncInsts {
obs.setDelegate(*d)
}
m.asyncInsts = nil
}
func (m *meterImpl) NewSyncInstrument(desc metric.Descriptor) (metric.SyncImpl, error) {
m.lock.Lock()
defer m.lock.Unlock()
if meterPtr := (*metric.MeterImpl)(atomic.LoadPointer(&m.delegate)); meterPtr != nil {
return (*meterPtr).NewSyncInstrument(desc)
}
inst := &syncImpl{
instrument: instrument{
descriptor: desc,
},
}
m.syncInsts = append(m.syncInsts, inst)
return inst, nil
}
// Synchronous delegation
func (inst *syncImpl) setDelegate(d metric.MeterImpl) {
implPtr := new(metric.SyncImpl)
var err error
*implPtr, err = d.NewSyncInstrument(inst.descriptor)
if err != nil {
// TODO: There is no standard way to deliver this error to the user.
// See https://github.com/open-telemetry/opentelemetry-go/issues/514
// Note that the default SDK will not generate any errors yet, this is
// only for added safety.
panic(err)
}
atomic.StorePointer(&inst.delegate, unsafe.Pointer(implPtr))
}
func (inst *syncImpl) Implementation() interface{} {
if implPtr := (*metric.SyncImpl)(atomic.LoadPointer(&inst.delegate)); implPtr != nil {
return (*implPtr).Implementation()
}
return inst
}
func (inst *syncImpl) Bind(labels []attribute.KeyValue) metric.BoundSyncImpl {
if implPtr := (*metric.SyncImpl)(atomic.LoadPointer(&inst.delegate)); implPtr != nil {
return (*implPtr).Bind(labels)
}
return &syncHandle{
inst: inst,
labels: labels,
}
}
func (bound *syncHandle) Unbind() {
bound.initialize.Do(func() {})
implPtr := (*metric.BoundSyncImpl)(atomic.LoadPointer(&bound.delegate))
if implPtr == nil {
return
}
(*implPtr).Unbind()
}
// Async delegation
func (m *meterImpl) NewAsyncInstrument(
desc metric.Descriptor,
runner metric.AsyncRunner,
) (metric.AsyncImpl, error) {
m.lock.Lock()
defer m.lock.Unlock()
if meterPtr := (*metric.MeterImpl)(atomic.LoadPointer(&m.delegate)); meterPtr != nil {
return (*meterPtr).NewAsyncInstrument(desc, runner)
}
inst := &asyncImpl{
instrument: instrument{
descriptor: desc,
},
runner: runner,
}
m.asyncInsts = append(m.asyncInsts, inst)
return inst, nil
}
func (obs *asyncImpl) Implementation() interface{} {
if implPtr := (*metric.AsyncImpl)(atomic.LoadPointer(&obs.delegate)); implPtr != nil {
return (*implPtr).Implementation()
}
return obs
}
func (obs *asyncImpl) setDelegate(d metric.MeterImpl) {
implPtr := new(metric.AsyncImpl)
var err error
*implPtr, err = d.NewAsyncInstrument(obs.descriptor, obs.runner)
if err != nil {
// TODO: There is no standard way to deliver this error to the user.
// See https://github.com/open-telemetry/opentelemetry-go/issues/514
// Note that the default SDK will not generate any errors yet, this is
// only for added safety.
panic(err)
}
atomic.StorePointer(&obs.delegate, unsafe.Pointer(implPtr))
}
// Metric updates
func (m *meterImpl) RecordBatch(ctx context.Context, labels []attribute.KeyValue, measurements ...metric.Measurement) {
if delegatePtr := (*metric.MeterImpl)(atomic.LoadPointer(&m.delegate)); delegatePtr != nil {
(*delegatePtr).RecordBatch(ctx, labels, measurements...)
}
}
func (inst *syncImpl) RecordOne(ctx context.Context, number number.Number, labels []attribute.KeyValue) {
if instPtr := (*metric.SyncImpl)(atomic.LoadPointer(&inst.delegate)); instPtr != nil {
(*instPtr).RecordOne(ctx, number, labels)
}
}
// Bound instrument initialization
func (bound *syncHandle) RecordOne(ctx context.Context, number number.Number) {
instPtr := (*metric.SyncImpl)(atomic.LoadPointer(&bound.inst.delegate))
if instPtr == nil {
return
}
var implPtr *metric.BoundSyncImpl
bound.initialize.Do(func() {
implPtr = new(metric.BoundSyncImpl)
*implPtr = (*instPtr).Bind(bound.labels)
atomic.StorePointer(&bound.delegate, unsafe.Pointer(implPtr))
})
if implPtr == nil {
implPtr = (*metric.BoundSyncImpl)(atomic.LoadPointer(&bound.delegate))
}
// This may still be nil if instrument was created and bound
// without a delegate, then the instrument was set to have a
// delegate and unbound.
if implPtr == nil {
return
}
(*implPtr).RecordOne(ctx, number)
}
func AtomicFieldOffsets() map[string]uintptr {
return map[string]uintptr{
"meterProvider.delegate": unsafe.Offsetof(meterProvider{}.delegate),
"meterImpl.delegate": unsafe.Offsetof(meterImpl{}.delegate),
"syncImpl.delegate": unsafe.Offsetof(syncImpl{}.delegate),
"asyncImpl.delegate": unsafe.Offsetof(asyncImpl{}.delegate),
"syncHandle.delegate": unsafe.Offsetof(syncHandle{}.delegate),
}
}

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vendor/go.opentelemetry.io/otel/internal/global/propagator.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package global
import (
"context"
"sync"
"go.opentelemetry.io/otel/propagation"
)
// textMapPropagator is a default TextMapPropagator that delegates calls to a
// registered delegate if one is set, otherwise it defaults to delegating the
// calls to a the default no-op propagation.TextMapPropagator.
type textMapPropagator struct {
mtx sync.Mutex
once sync.Once
delegate propagation.TextMapPropagator
noop propagation.TextMapPropagator
}
// Compile-time guarantee that textMapPropagator implements the
// propagation.TextMapPropagator interface.
var _ propagation.TextMapPropagator = (*textMapPropagator)(nil)
func newTextMapPropagator() *textMapPropagator {
return &textMapPropagator{
noop: propagation.NewCompositeTextMapPropagator(),
}
}
// SetDelegate sets a delegate propagation.TextMapPropagator that all calls are
// forwarded to. Delegation can only be performed once, all subsequent calls
// perform no delegation.
func (p *textMapPropagator) SetDelegate(delegate propagation.TextMapPropagator) {
if delegate == nil {
return
}
p.mtx.Lock()
p.once.Do(func() { p.delegate = delegate })
p.mtx.Unlock()
}
// effectiveDelegate returns the current delegate of p if one is set,
// otherwise the default noop TextMapPropagator is returned. This method
// can be called concurrently.
func (p *textMapPropagator) effectiveDelegate() propagation.TextMapPropagator {
p.mtx.Lock()
defer p.mtx.Unlock()
if p.delegate != nil {
return p.delegate
}
return p.noop
}
// Inject set cross-cutting concerns from the Context into the carrier.
func (p *textMapPropagator) Inject(ctx context.Context, carrier propagation.TextMapCarrier) {
p.effectiveDelegate().Inject(ctx, carrier)
}
// Extract reads cross-cutting concerns from the carrier into a Context.
func (p *textMapPropagator) Extract(ctx context.Context, carrier propagation.TextMapCarrier) context.Context {
return p.effectiveDelegate().Extract(ctx, carrier)
}
// Fields returns the keys whose values are set with Inject.
func (p *textMapPropagator) Fields() []string {
return p.effectiveDelegate().Fields()
}

143
vendor/go.opentelemetry.io/otel/internal/global/state.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package global
import (
"sync"
"sync/atomic"
"go.opentelemetry.io/otel/metric"
"go.opentelemetry.io/otel/propagation"
"go.opentelemetry.io/otel/trace"
)
type (
tracerProviderHolder struct {
tp trace.TracerProvider
}
meterProviderHolder struct {
mp metric.MeterProvider
}
propagatorsHolder struct {
tm propagation.TextMapPropagator
}
)
var (
globalTracer = defaultTracerValue()
globalMeter = defaultMeterValue()
globalPropagators = defaultPropagatorsValue()
delegateMeterOnce sync.Once
delegateTraceOnce sync.Once
delegateTextMapPropagatorOnce sync.Once
)
// TracerProvider is the internal implementation for global.TracerProvider.
func TracerProvider() trace.TracerProvider {
return globalTracer.Load().(tracerProviderHolder).tp
}
// SetTracerProvider is the internal implementation for global.SetTracerProvider.
func SetTracerProvider(tp trace.TracerProvider) {
delegateTraceOnce.Do(func() {
current := TracerProvider()
if current == tp {
// Setting the provider to the prior default is nonsense, panic.
// Panic is acceptable because we are likely still early in the
// process lifetime.
panic("invalid TracerProvider, the global instance cannot be reinstalled")
} else if def, ok := current.(*tracerProvider); ok {
def.setDelegate(tp)
}
})
globalTracer.Store(tracerProviderHolder{tp: tp})
}
// MeterProvider is the internal implementation for global.MeterProvider.
func MeterProvider() metric.MeterProvider {
return globalMeter.Load().(meterProviderHolder).mp
}
// SetMeterProvider is the internal implementation for global.SetMeterProvider.
func SetMeterProvider(mp metric.MeterProvider) {
delegateMeterOnce.Do(func() {
current := MeterProvider()
if current == mp {
// Setting the provider to the prior default is nonsense, panic.
// Panic is acceptable because we are likely still early in the
// process lifetime.
panic("invalid MeterProvider, the global instance cannot be reinstalled")
} else if def, ok := current.(*meterProvider); ok {
def.setDelegate(mp)
}
})
globalMeter.Store(meterProviderHolder{mp: mp})
}
// TextMapPropagator is the internal implementation for global.TextMapPropagator.
func TextMapPropagator() propagation.TextMapPropagator {
return globalPropagators.Load().(propagatorsHolder).tm
}
// SetTextMapPropagator is the internal implementation for global.SetTextMapPropagator.
func SetTextMapPropagator(p propagation.TextMapPropagator) {
// For the textMapPropagator already returned by TextMapPropagator
// delegate to p.
delegateTextMapPropagatorOnce.Do(func() {
if current := TextMapPropagator(); current == p {
// Setting the provider to the prior default is nonsense, panic.
// Panic is acceptable because we are likely still early in the
// process lifetime.
panic("invalid TextMapPropagator, the global instance cannot be reinstalled")
} else if def, ok := current.(*textMapPropagator); ok {
def.SetDelegate(p)
}
})
// Return p when subsequent calls to TextMapPropagator are made.
globalPropagators.Store(propagatorsHolder{tm: p})
}
func defaultTracerValue() *atomic.Value {
v := &atomic.Value{}
v.Store(tracerProviderHolder{tp: &tracerProvider{}})
return v
}
func defaultMeterValue() *atomic.Value {
v := &atomic.Value{}
v.Store(meterProviderHolder{mp: newMeterProvider()})
return v
}
func defaultPropagatorsValue() *atomic.Value {
v := &atomic.Value{}
v.Store(propagatorsHolder{tm: newTextMapPropagator()})
return v
}
// ResetForTest restores the initial global state, for testing purposes.
func ResetForTest() {
globalTracer = defaultTracerValue()
globalMeter = defaultMeterValue()
globalPropagators = defaultPropagatorsValue()
delegateMeterOnce = sync.Once{}
delegateTraceOnce = sync.Once{}
delegateTextMapPropagatorOnce = sync.Once{}
}

147
vendor/go.opentelemetry.io/otel/internal/global/trace.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package global
/*
This file contains the forwarding implementation of the TracerProvider used as
the default global instance. Prior to initialization of an SDK, Tracers
returned by the global TracerProvider will provide no-op functionality. This
means that all Span created prior to initialization are no-op Spans.
Once an SDK has been initialized, all provided no-op Tracers are swapped for
Tracers provided by the SDK defined TracerProvider. However, any Span started
prior to this initialization does not change its behavior. Meaning, the Span
remains a no-op Span.
The implementation to track and swap Tracers locks all new Tracer creation
until the swap is complete. This assumes that this operation is not
performance-critical. If that assumption is incorrect, be sure to configure an
SDK prior to any Tracer creation.
*/
import (
"context"
"sync"
"sync/atomic"
"go.opentelemetry.io/otel/internal/trace/noop"
"go.opentelemetry.io/otel/trace"
)
// tracerProvider is a placeholder for a configured SDK TracerProvider.
//
// All TracerProvider functionality is forwarded to a delegate once
// configured.
type tracerProvider struct {
mtx sync.Mutex
tracers map[il]*tracer
delegate trace.TracerProvider
}
// Compile-time guarantee that tracerProvider implements the TracerProvider
// interface.
var _ trace.TracerProvider = &tracerProvider{}
// setDelegate configures p to delegate all TracerProvider functionality to
// provider.
//
// All Tracers provided prior to this function call are switched out to be
// Tracers provided by provider.
//
// It is guaranteed by the caller that this happens only once.
func (p *tracerProvider) setDelegate(provider trace.TracerProvider) {
p.mtx.Lock()
defer p.mtx.Unlock()
p.delegate = provider
if len(p.tracers) == 0 {
return
}
for _, t := range p.tracers {
t.setDelegate(provider)
}
p.tracers = nil
}
// Tracer implements TracerProvider.
func (p *tracerProvider) Tracer(name string, opts ...trace.TracerOption) trace.Tracer {
p.mtx.Lock()
defer p.mtx.Unlock()
if p.delegate != nil {
return p.delegate.Tracer(name, opts...)
}
// At this moment it is guaranteed that no sdk is installed, save the tracer in the tracers map.
key := il{
name: name,
version: trace.NewTracerConfig(opts...).InstrumentationVersion,
}
if p.tracers == nil {
p.tracers = make(map[il]*tracer)
}
if val, ok := p.tracers[key]; ok {
return val
}
t := &tracer{name: name, opts: opts}
p.tracers[key] = t
return t
}
type il struct {
name string
version string
}
// tracer is a placeholder for a trace.Tracer.
//
// All Tracer functionality is forwarded to a delegate once configured.
// Otherwise, all functionality is forwarded to a NoopTracer.
type tracer struct {
name string
opts []trace.TracerOption
delegate atomic.Value
}
// Compile-time guarantee that tracer implements the trace.Tracer interface.
var _ trace.Tracer = &tracer{}
// setDelegate configures t to delegate all Tracer functionality to Tracers
// created by provider.
//
// All subsequent calls to the Tracer methods will be passed to the delegate.
//
// It is guaranteed by the caller that this happens only once.
func (t *tracer) setDelegate(provider trace.TracerProvider) {
t.delegate.Store(provider.Tracer(t.name, t.opts...))
}
// Start implements trace.Tracer by forwarding the call to t.delegate if
// set, otherwise it forwards the call to a NoopTracer.
func (t *tracer) Start(ctx context.Context, name string, opts ...trace.SpanOption) (context.Context, trace.Span) {
delegate := t.delegate.Load()
if delegate != nil {
return delegate.(trace.Tracer).Start(ctx, name, opts...)
}
return noop.Tracer.Start(ctx, name, opts...)
}

148
vendor/go.opentelemetry.io/otel/internal/metric/async.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package metric
import (
"context"
"errors"
"fmt"
"sync"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/metric"
)
var ErrInvalidAsyncRunner = errors.New("unknown async runner type")
// AsyncCollector is an interface used between the MeterImpl and the
// AsyncInstrumentState helper below. This interface is implemented by
// the SDK to provide support for running observer callbacks.
type AsyncCollector interface {
// CollectAsync passes a batch of observations to the MeterImpl.
CollectAsync(labels []attribute.KeyValue, observation ...metric.Observation)
}
// AsyncInstrumentState manages an ordered set of asynchronous
// instruments and the distinct runners, taking into account batch
// observer callbacks.
type AsyncInstrumentState struct {
lock sync.Mutex
// errorOnce will use the otel.Handler to report an error
// once in case of an invalid runner attempting to run.
errorOnce sync.Once
// runnerMap keeps the set of runners that will run each
// collection interval. Singletons are entered with a real
// instrument each, batch observers are entered with a nil
// instrument, ensuring that when a singleton callback is used
// repeatedly, it is executed repeatedly in the interval, while
// when a batch callback is used repeatedly, it only executes
// once per interval.
runnerMap map[asyncRunnerPair]struct{}
// runners maintains the set of runners in the order they were
// registered.
runners []asyncRunnerPair
// instruments maintains the set of instruments in the order
// they were registered.
instruments []metric.AsyncImpl
}
// asyncRunnerPair is a map entry for Observer callback runners.
type asyncRunnerPair struct {
// runner is used as a map key here. The API ensures
// that all callbacks are pointers for this reason.
runner metric.AsyncRunner
// inst refers to a non-nil instrument when `runner` is a
// AsyncSingleRunner.
inst metric.AsyncImpl
}
// NewAsyncInstrumentState returns a new *AsyncInstrumentState, for
// use by MeterImpl to manage running the set of observer callbacks in
// the correct order.
func NewAsyncInstrumentState() *AsyncInstrumentState {
return &AsyncInstrumentState{
runnerMap: map[asyncRunnerPair]struct{}{},
}
}
// Instruments returns the asynchronous instruments managed by this
// object, the set that should be checkpointed after observers are
// run.
func (a *AsyncInstrumentState) Instruments() []metric.AsyncImpl {
a.lock.Lock()
defer a.lock.Unlock()
return a.instruments
}
// Register adds a new asynchronous instrument to by managed by this
// object. This should be called during NewAsyncInstrument() and
// assumes that errors (e.g., duplicate registration) have already
// been checked.
func (a *AsyncInstrumentState) Register(inst metric.AsyncImpl, runner metric.AsyncRunner) {
a.lock.Lock()
defer a.lock.Unlock()
a.instruments = append(a.instruments, inst)
// asyncRunnerPair reflects this callback in the asyncRunners
// list. If this is a batch runner, the instrument is nil.
// If this is a single-Observer runner, the instrument is
// included. This ensures that batch callbacks are called
// once and single callbacks are called once per instrument.
rp := asyncRunnerPair{
runner: runner,
}
if _, ok := runner.(metric.AsyncSingleRunner); ok {
rp.inst = inst
}
if _, ok := a.runnerMap[rp]; !ok {
a.runnerMap[rp] = struct{}{}
a.runners = append(a.runners, rp)
}
}
// Run executes the complete set of observer callbacks.
func (a *AsyncInstrumentState) Run(ctx context.Context, collector AsyncCollector) {
a.lock.Lock()
runners := a.runners
a.lock.Unlock()
for _, rp := range runners {
// The runner must be a single or batch runner, no
// other implementations are possible because the
// interface has un-exported methods.
if singleRunner, ok := rp.runner.(metric.AsyncSingleRunner); ok {
singleRunner.Run(ctx, rp.inst, collector.CollectAsync)
continue
}
if multiRunner, ok := rp.runner.(metric.AsyncBatchRunner); ok {
multiRunner.Run(ctx, collector.CollectAsync)
continue
}
a.errorOnce.Do(func() {
otel.Handle(fmt.Errorf("%w: type %T (reported once)", ErrInvalidAsyncRunner, rp))
})
}
}

55
vendor/go.opentelemetry.io/otel/internal/rawhelpers.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package internal
import (
"math"
"unsafe"
)
func BoolToRaw(b bool) uint64 {
if b {
return 1
}
return 0
}
func RawToBool(r uint64) bool {
return r != 0
}
func Int64ToRaw(i int64) uint64 {
return uint64(i)
}
func RawToInt64(r uint64) int64 {
return int64(r)
}
func Float64ToRaw(f float64) uint64 {
return math.Float64bits(f)
}
func RawToFloat64(r uint64) float64 {
return math.Float64frombits(r)
}
func RawPtrToFloat64Ptr(r *uint64) *float64 {
return (*float64)(unsafe.Pointer(r))
}
func RawPtrToInt64Ptr(r *uint64) *int64 {
return (*int64)(unsafe.Pointer(r))
}

35
vendor/go.opentelemetry.io/otel/internal/trace/noop/noop.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package noop provides noop tracing implementations for tracer and span.
package noop
import (
"context"
"go.opentelemetry.io/otel/trace"
)
var (
// Tracer is a noop tracer that starts noop spans.
Tracer trace.Tracer
// Span is a noop Span.
Span trace.Span
)
func init() {
Tracer = trace.NewNoopTracerProvider().Tracer("")
_, Span = Tracer.Start(context.Background(), "")
}

201
vendor/go.opentelemetry.io/otel/metric/LICENSE generated vendored Normal file
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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
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5. Submission of Contributions. Unless You explicitly state otherwise,
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on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
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of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
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Licensed under the Apache License, Version 2.0 (the "License");
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package metric // import "go.opentelemetry.io/otel/metric"
import (
"go.opentelemetry.io/otel/unit"
)
// InstrumentConfig contains options for metric instrument descriptors.
type InstrumentConfig struct {
// Description describes the instrument in human-readable terms.
Description string
// Unit describes the measurement unit for a instrument.
Unit unit.Unit
// InstrumentationName is the name of the library providing
// instrumentation.
InstrumentationName string
// InstrumentationVersion is the version of the library providing
// instrumentation.
InstrumentationVersion string
}
// InstrumentOption is an interface for applying metric instrument options.
type InstrumentOption interface {
// ApplyMeter is used to set a InstrumentOption value of a
// InstrumentConfig.
ApplyInstrument(*InstrumentConfig)
}
// NewInstrumentConfig creates a new InstrumentConfig
// and applies all the given options.
func NewInstrumentConfig(opts ...InstrumentOption) InstrumentConfig {
var config InstrumentConfig
for _, o := range opts {
o.ApplyInstrument(&config)
}
return config
}
// WithDescription applies provided description.
func WithDescription(desc string) InstrumentOption {
return descriptionOption(desc)
}
type descriptionOption string
func (d descriptionOption) ApplyInstrument(config *InstrumentConfig) {
config.Description = string(d)
}
// WithUnit applies provided unit.
func WithUnit(unit unit.Unit) InstrumentOption {
return unitOption(unit)
}
type unitOption unit.Unit
func (u unitOption) ApplyInstrument(config *InstrumentConfig) {
config.Unit = unit.Unit(u)
}
// WithInstrumentationName sets the instrumentation name.
func WithInstrumentationName(name string) InstrumentOption {
return instrumentationNameOption(name)
}
type instrumentationNameOption string
func (i instrumentationNameOption) ApplyInstrument(config *InstrumentConfig) {
config.InstrumentationName = string(i)
}
// MeterConfig contains options for Meters.
type MeterConfig struct {
// InstrumentationVersion is the version of the library providing
// instrumentation.
InstrumentationVersion string
}
// MeterOption is an interface for applying Meter options.
type MeterOption interface {
// ApplyMeter is used to set a MeterOption value of a MeterConfig.
ApplyMeter(*MeterConfig)
}
// NewMeterConfig creates a new MeterConfig and applies
// all the given options.
func NewMeterConfig(opts ...MeterOption) MeterConfig {
var config MeterConfig
for _, o := range opts {
o.ApplyMeter(&config)
}
return config
}
// InstrumentationOption is an interface for applying instrumentation specific
// options.
type InstrumentationOption interface {
InstrumentOption
MeterOption
}
// WithInstrumentationVersion sets the instrumentation version.
func WithInstrumentationVersion(version string) InstrumentationOption {
return instrumentationVersionOption(version)
}
type instrumentationVersionOption string
func (i instrumentationVersionOption) ApplyMeter(config *MeterConfig) {
config.InstrumentationVersion = string(i)
}
func (i instrumentationVersionOption) ApplyInstrument(config *InstrumentConfig) {
config.InstrumentationVersion = string(i)
}

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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/*
Package metric provides an implementation of the metrics part of the
OpenTelemetry API.
This package is currently in a pre-GA phase. Backwards incompatible changes
may be introduced in subsequent minor version releases as we work to track the
evolving OpenTelemetry specification and user feedback.
Measurements can be made about an operation being performed or the state of a
system in general. These measurements can be crucial to the reliable operation
of code and provide valuable insights about the inner workings of a system.
Measurements are made using instruments provided by this package. The type of
instrument used will depend on the type of measurement being made and of what
part of a system is being measured.
Instruments are categorized as Synchronous or Asynchronous and independently
as Adding or Grouping. Synchronous instruments are called by the user with a
Context. Asynchronous instruments are called by the SDK during collection.
Additive instruments are semantically intended for capturing a sum. Grouping
instruments are intended for capturing a distribution.
Additive instruments may be monotonic, in which case they are non-decreasing
and naturally define a rate.
The synchronous instrument names are:
Counter: additive, monotonic
UpDownCounter: additive
ValueRecorder: grouping
and the asynchronous instruments are:
SumObserver: additive, monotonic
UpDownSumObserver: additive
ValueObserver: grouping
All instruments are provided with support for either float64 or int64 input
values.
An instrument is created using a Meter. Additionally, a Meter is used to
record batches of synchronous measurements or asynchronous observations. A
Meter is obtained using a MeterProvider. A Meter, like a Tracer, is unique to
the instrumentation it instruments and must be named and versioned when
created with a MeterProvider with the name and version of the instrumentation
library.
Instrumentation should be designed to accept a MeterProvider from which it can
create its own unique Meter. Alternatively, the registered global
MeterProvider from the go.opentelemetry.io/otel package can be used as a
default.
*/
package metric // import "go.opentelemetry.io/otel/metric"

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vendor/go.opentelemetry.io/otel/metric/global/metric.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package global // import "go.opentelemetry.io/otel/metric/global"
import (
"go.opentelemetry.io/otel/internal/global"
"go.opentelemetry.io/otel/metric"
)
// Meter creates an implementation of the Meter interface from the global
// MeterProvider. The instrumentationName must be the name of the library
// providing instrumentation. This name may be the same as the instrumented
// code only if that code provides built-in instrumentation. If the
// instrumentationName is empty, then a implementation defined default name
// will be used instead.
//
// This is short for MeterProvider().Meter(name)
func Meter(instrumentationName string, opts ...metric.MeterOption) metric.Meter {
return GetMeterProvider().Meter(instrumentationName, opts...)
}
// GetMeterProvider returns the registered global meter provider. If
// none is registered then a default meter provider is returned that
// forwards the Meter interface to the first registered Meter.
//
// Use the meter provider to create a named meter. E.g.
// meter := global.MeterProvider().Meter("example.com/foo")
// or
// meter := global.Meter("example.com/foo")
func GetMeterProvider() metric.MeterProvider {
return global.MeterProvider()
}
// SetMeterProvider registers `mp` as the global meter provider.
func SetMeterProvider(mp metric.MeterProvider) {
global.SetMeterProvider(mp)
}

54
vendor/go.opentelemetry.io/otel/metric/go.mod generated vendored Normal file
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module go.opentelemetry.io/otel/metric
go 1.14
replace go.opentelemetry.io/otel => ../
replace go.opentelemetry.io/otel/bridge/opencensus => ../bridge/opencensus
replace go.opentelemetry.io/otel/bridge/opentracing => ../bridge/opentracing
replace go.opentelemetry.io/otel/example/jaeger => ../example/jaeger
replace go.opentelemetry.io/otel/example/namedtracer => ../example/namedtracer
replace go.opentelemetry.io/otel/example/opencensus => ../example/opencensus
replace go.opentelemetry.io/otel/example/otel-collector => ../example/otel-collector
replace go.opentelemetry.io/otel/example/prom-collector => ../example/prom-collector
replace go.opentelemetry.io/otel/example/prometheus => ../example/prometheus
replace go.opentelemetry.io/otel/example/zipkin => ../example/zipkin
replace go.opentelemetry.io/otel/exporters/metric/prometheus => ../exporters/metric/prometheus
replace go.opentelemetry.io/otel/exporters/otlp => ../exporters/otlp
replace go.opentelemetry.io/otel/exporters/stdout => ../exporters/stdout
replace go.opentelemetry.io/otel/exporters/trace/jaeger => ../exporters/trace/jaeger
replace go.opentelemetry.io/otel/exporters/trace/zipkin => ../exporters/trace/zipkin
replace go.opentelemetry.io/otel/internal/tools => ../internal/tools
replace go.opentelemetry.io/otel/metric => ./
replace go.opentelemetry.io/otel/oteltest => ../oteltest
replace go.opentelemetry.io/otel/sdk => ../sdk
replace go.opentelemetry.io/otel/sdk/export/metric => ../sdk/export/metric
replace go.opentelemetry.io/otel/sdk/metric => ../sdk/metric
replace go.opentelemetry.io/otel/trace => ../trace
require (
github.com/google/go-cmp v0.5.5
github.com/stretchr/testify v1.7.0
go.opentelemetry.io/otel v0.20.0
go.opentelemetry.io/otel/oteltest v0.20.0
)

15
vendor/go.opentelemetry.io/otel/metric/go.sum generated vendored Normal file
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@ -0,0 +1,15 @@
github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

28
vendor/go.opentelemetry.io/otel/metric/instrumentkind_string.go generated vendored Normal file
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// Code generated by "stringer -type=InstrumentKind"; DO NOT EDIT.
package metric
import "strconv"
func _() {
// An "invalid array index" compiler error signifies that the constant values have changed.
// Re-run the stringer command to generate them again.
var x [1]struct{}
_ = x[ValueRecorderInstrumentKind-0]
_ = x[ValueObserverInstrumentKind-1]
_ = x[CounterInstrumentKind-2]
_ = x[UpDownCounterInstrumentKind-3]
_ = x[SumObserverInstrumentKind-4]
_ = x[UpDownSumObserverInstrumentKind-5]
}
const _InstrumentKind_name = "ValueRecorderInstrumentKindValueObserverInstrumentKindCounterInstrumentKindUpDownCounterInstrumentKindSumObserverInstrumentKindUpDownSumObserverInstrumentKind"
var _InstrumentKind_index = [...]uint8{0, 27, 54, 75, 102, 127, 158}
func (i InstrumentKind) String() string {
if i < 0 || i >= InstrumentKind(len(_InstrumentKind_index)-1) {
return "InstrumentKind(" + strconv.FormatInt(int64(i), 10) + ")"
}
return _InstrumentKind_name[_InstrumentKind_index[i]:_InstrumentKind_index[i+1]]
}

577
vendor/go.opentelemetry.io/otel/metric/metric.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package metric // import "go.opentelemetry.io/otel/metric"
import (
"context"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/metric/number"
"go.opentelemetry.io/otel/unit"
)
// MeterProvider supports named Meter instances.
type MeterProvider interface {
// Meter creates an implementation of the Meter interface.
// The instrumentationName must be the name of the library providing
// instrumentation. This name may be the same as the instrumented code
// only if that code provides built-in instrumentation. If the
// instrumentationName is empty, then a implementation defined default
// name will be used instead.
Meter(instrumentationName string, opts ...MeterOption) Meter
}
// Meter is the creator of metric instruments.
//
// An uninitialized Meter is a no-op implementation.
type Meter struct {
impl MeterImpl
name, version string
}
// RecordBatch atomically records a batch of measurements.
func (m Meter) RecordBatch(ctx context.Context, ls []attribute.KeyValue, ms ...Measurement) {
if m.impl == nil {
return
}
m.impl.RecordBatch(ctx, ls, ms...)
}
// NewBatchObserver creates a new BatchObserver that supports
// making batches of observations for multiple instruments.
func (m Meter) NewBatchObserver(callback BatchObserverFunc) BatchObserver {
return BatchObserver{
meter: m,
runner: newBatchAsyncRunner(callback),
}
}
// NewInt64Counter creates a new integer Counter instrument with the
// given name, customized with options. May return an error if the
// name is invalid (e.g., empty) or improperly registered (e.g.,
// duplicate registration).
func (m Meter) NewInt64Counter(name string, options ...InstrumentOption) (Int64Counter, error) {
return wrapInt64CounterInstrument(
m.newSync(name, CounterInstrumentKind, number.Int64Kind, options))
}
// NewFloat64Counter creates a new floating point Counter with the
// given name, customized with options. May return an error if the
// name is invalid (e.g., empty) or improperly registered (e.g.,
// duplicate registration).
func (m Meter) NewFloat64Counter(name string, options ...InstrumentOption) (Float64Counter, error) {
return wrapFloat64CounterInstrument(
m.newSync(name, CounterInstrumentKind, number.Float64Kind, options))
}
// NewInt64UpDownCounter creates a new integer UpDownCounter instrument with the
// given name, customized with options. May return an error if the
// name is invalid (e.g., empty) or improperly registered (e.g.,
// duplicate registration).
func (m Meter) NewInt64UpDownCounter(name string, options ...InstrumentOption) (Int64UpDownCounter, error) {
return wrapInt64UpDownCounterInstrument(
m.newSync(name, UpDownCounterInstrumentKind, number.Int64Kind, options))
}
// NewFloat64UpDownCounter creates a new floating point UpDownCounter with the
// given name, customized with options. May return an error if the
// name is invalid (e.g., empty) or improperly registered (e.g.,
// duplicate registration).
func (m Meter) NewFloat64UpDownCounter(name string, options ...InstrumentOption) (Float64UpDownCounter, error) {
return wrapFloat64UpDownCounterInstrument(
m.newSync(name, UpDownCounterInstrumentKind, number.Float64Kind, options))
}
// NewInt64ValueRecorder creates a new integer ValueRecorder instrument with the
// given name, customized with options. May return an error if the
// name is invalid (e.g., empty) or improperly registered (e.g.,
// duplicate registration).
func (m Meter) NewInt64ValueRecorder(name string, opts ...InstrumentOption) (Int64ValueRecorder, error) {
return wrapInt64ValueRecorderInstrument(
m.newSync(name, ValueRecorderInstrumentKind, number.Int64Kind, opts))
}
// NewFloat64ValueRecorder creates a new floating point ValueRecorder with the
// given name, customized with options. May return an error if the
// name is invalid (e.g., empty) or improperly registered (e.g.,
// duplicate registration).
func (m Meter) NewFloat64ValueRecorder(name string, opts ...InstrumentOption) (Float64ValueRecorder, error) {
return wrapFloat64ValueRecorderInstrument(
m.newSync(name, ValueRecorderInstrumentKind, number.Float64Kind, opts))
}
// NewInt64ValueObserver creates a new integer ValueObserver instrument
// with the given name, running a given callback, and customized with
// options. May return an error if the name is invalid (e.g., empty)
// or improperly registered (e.g., duplicate registration).
func (m Meter) NewInt64ValueObserver(name string, callback Int64ObserverFunc, opts ...InstrumentOption) (Int64ValueObserver, error) {
if callback == nil {
return wrapInt64ValueObserverInstrument(NoopAsync{}, nil)
}
return wrapInt64ValueObserverInstrument(
m.newAsync(name, ValueObserverInstrumentKind, number.Int64Kind, opts,
newInt64AsyncRunner(callback)))
}
// NewFloat64ValueObserver creates a new floating point ValueObserver with
// the given name, running a given callback, and customized with
// options. May return an error if the name is invalid (e.g., empty)
// or improperly registered (e.g., duplicate registration).
func (m Meter) NewFloat64ValueObserver(name string, callback Float64ObserverFunc, opts ...InstrumentOption) (Float64ValueObserver, error) {
if callback == nil {
return wrapFloat64ValueObserverInstrument(NoopAsync{}, nil)
}
return wrapFloat64ValueObserverInstrument(
m.newAsync(name, ValueObserverInstrumentKind, number.Float64Kind, opts,
newFloat64AsyncRunner(callback)))
}
// NewInt64SumObserver creates a new integer SumObserver instrument
// with the given name, running a given callback, and customized with
// options. May return an error if the name is invalid (e.g., empty)
// or improperly registered (e.g., duplicate registration).
func (m Meter) NewInt64SumObserver(name string, callback Int64ObserverFunc, opts ...InstrumentOption) (Int64SumObserver, error) {
if callback == nil {
return wrapInt64SumObserverInstrument(NoopAsync{}, nil)
}
return wrapInt64SumObserverInstrument(
m.newAsync(name, SumObserverInstrumentKind, number.Int64Kind, opts,
newInt64AsyncRunner(callback)))
}
// NewFloat64SumObserver creates a new floating point SumObserver with
// the given name, running a given callback, and customized with
// options. May return an error if the name is invalid (e.g., empty)
// or improperly registered (e.g., duplicate registration).
func (m Meter) NewFloat64SumObserver(name string, callback Float64ObserverFunc, opts ...InstrumentOption) (Float64SumObserver, error) {
if callback == nil {
return wrapFloat64SumObserverInstrument(NoopAsync{}, nil)
}
return wrapFloat64SumObserverInstrument(
m.newAsync(name, SumObserverInstrumentKind, number.Float64Kind, opts,
newFloat64AsyncRunner(callback)))
}
// NewInt64UpDownSumObserver creates a new integer UpDownSumObserver instrument
// with the given name, running a given callback, and customized with
// options. May return an error if the name is invalid (e.g., empty)
// or improperly registered (e.g., duplicate registration).
func (m Meter) NewInt64UpDownSumObserver(name string, callback Int64ObserverFunc, opts ...InstrumentOption) (Int64UpDownSumObserver, error) {
if callback == nil {
return wrapInt64UpDownSumObserverInstrument(NoopAsync{}, nil)
}
return wrapInt64UpDownSumObserverInstrument(
m.newAsync(name, UpDownSumObserverInstrumentKind, number.Int64Kind, opts,
newInt64AsyncRunner(callback)))
}
// NewFloat64UpDownSumObserver creates a new floating point UpDownSumObserver with
// the given name, running a given callback, and customized with
// options. May return an error if the name is invalid (e.g., empty)
// or improperly registered (e.g., duplicate registration).
func (m Meter) NewFloat64UpDownSumObserver(name string, callback Float64ObserverFunc, opts ...InstrumentOption) (Float64UpDownSumObserver, error) {
if callback == nil {
return wrapFloat64UpDownSumObserverInstrument(NoopAsync{}, nil)
}
return wrapFloat64UpDownSumObserverInstrument(
m.newAsync(name, UpDownSumObserverInstrumentKind, number.Float64Kind, opts,
newFloat64AsyncRunner(callback)))
}
// NewInt64ValueObserver creates a new integer ValueObserver instrument
// with the given name, running in a batch callback, and customized with
// options. May return an error if the name is invalid (e.g., empty)
// or improperly registered (e.g., duplicate registration).
func (b BatchObserver) NewInt64ValueObserver(name string, opts ...InstrumentOption) (Int64ValueObserver, error) {
if b.runner == nil {
return wrapInt64ValueObserverInstrument(NoopAsync{}, nil)
}
return wrapInt64ValueObserverInstrument(
b.meter.newAsync(name, ValueObserverInstrumentKind, number.Int64Kind, opts, b.runner))
}
// NewFloat64ValueObserver creates a new floating point ValueObserver with
// the given name, running in a batch callback, and customized with
// options. May return an error if the name is invalid (e.g., empty)
// or improperly registered (e.g., duplicate registration).
func (b BatchObserver) NewFloat64ValueObserver(name string, opts ...InstrumentOption) (Float64ValueObserver, error) {
if b.runner == nil {
return wrapFloat64ValueObserverInstrument(NoopAsync{}, nil)
}
return wrapFloat64ValueObserverInstrument(
b.meter.newAsync(name, ValueObserverInstrumentKind, number.Float64Kind, opts,
b.runner))
}
// NewInt64SumObserver creates a new integer SumObserver instrument
// with the given name, running in a batch callback, and customized with
// options. May return an error if the name is invalid (e.g., empty)
// or improperly registered (e.g., duplicate registration).
func (b BatchObserver) NewInt64SumObserver(name string, opts ...InstrumentOption) (Int64SumObserver, error) {
if b.runner == nil {
return wrapInt64SumObserverInstrument(NoopAsync{}, nil)
}
return wrapInt64SumObserverInstrument(
b.meter.newAsync(name, SumObserverInstrumentKind, number.Int64Kind, opts, b.runner))
}
// NewFloat64SumObserver creates a new floating point SumObserver with
// the given name, running in a batch callback, and customized with
// options. May return an error if the name is invalid (e.g., empty)
// or improperly registered (e.g., duplicate registration).
func (b BatchObserver) NewFloat64SumObserver(name string, opts ...InstrumentOption) (Float64SumObserver, error) {
if b.runner == nil {
return wrapFloat64SumObserverInstrument(NoopAsync{}, nil)
}
return wrapFloat64SumObserverInstrument(
b.meter.newAsync(name, SumObserverInstrumentKind, number.Float64Kind, opts,
b.runner))
}
// NewInt64UpDownSumObserver creates a new integer UpDownSumObserver instrument
// with the given name, running in a batch callback, and customized with
// options. May return an error if the name is invalid (e.g., empty)
// or improperly registered (e.g., duplicate registration).
func (b BatchObserver) NewInt64UpDownSumObserver(name string, opts ...InstrumentOption) (Int64UpDownSumObserver, error) {
if b.runner == nil {
return wrapInt64UpDownSumObserverInstrument(NoopAsync{}, nil)
}
return wrapInt64UpDownSumObserverInstrument(
b.meter.newAsync(name, UpDownSumObserverInstrumentKind, number.Int64Kind, opts, b.runner))
}
// NewFloat64UpDownSumObserver creates a new floating point UpDownSumObserver with
// the given name, running in a batch callback, and customized with
// options. May return an error if the name is invalid (e.g., empty)
// or improperly registered (e.g., duplicate registration).
func (b BatchObserver) NewFloat64UpDownSumObserver(name string, opts ...InstrumentOption) (Float64UpDownSumObserver, error) {
if b.runner == nil {
return wrapFloat64UpDownSumObserverInstrument(NoopAsync{}, nil)
}
return wrapFloat64UpDownSumObserverInstrument(
b.meter.newAsync(name, UpDownSumObserverInstrumentKind, number.Float64Kind, opts,
b.runner))
}
// MeterImpl returns the underlying MeterImpl of this Meter.
func (m Meter) MeterImpl() MeterImpl {
return m.impl
}
// newAsync constructs one new asynchronous instrument.
func (m Meter) newAsync(
name string,
mkind InstrumentKind,
nkind number.Kind,
opts []InstrumentOption,
runner AsyncRunner,
) (
AsyncImpl,
error,
) {
if m.impl == nil {
return NoopAsync{}, nil
}
desc := NewDescriptor(name, mkind, nkind, opts...)
desc.config.InstrumentationName = m.name
desc.config.InstrumentationVersion = m.version
return m.impl.NewAsyncInstrument(desc, runner)
}
// newSync constructs one new synchronous instrument.
func (m Meter) newSync(
name string,
metricKind InstrumentKind,
numberKind number.Kind,
opts []InstrumentOption,
) (
SyncImpl,
error,
) {
if m.impl == nil {
return NoopSync{}, nil
}
desc := NewDescriptor(name, metricKind, numberKind, opts...)
desc.config.InstrumentationName = m.name
desc.config.InstrumentationVersion = m.version
return m.impl.NewSyncInstrument(desc)
}
// MeterMust is a wrapper for Meter interfaces that panics when any
// instrument constructor encounters an error.
type MeterMust struct {
meter Meter
}
// BatchObserverMust is a wrapper for BatchObserver that panics when
// any instrument constructor encounters an error.
type BatchObserverMust struct {
batch BatchObserver
}
// Must constructs a MeterMust implementation from a Meter, allowing
// the application to panic when any instrument constructor yields an
// error.
func Must(meter Meter) MeterMust {
return MeterMust{meter: meter}
}
// NewInt64Counter calls `Meter.NewInt64Counter` and returns the
// instrument, panicking if it encounters an error.
func (mm MeterMust) NewInt64Counter(name string, cos ...InstrumentOption) Int64Counter {
if inst, err := mm.meter.NewInt64Counter(name, cos...); err != nil {
panic(err)
} else {
return inst
}
}
// NewFloat64Counter calls `Meter.NewFloat64Counter` and returns the
// instrument, panicking if it encounters an error.
func (mm MeterMust) NewFloat64Counter(name string, cos ...InstrumentOption) Float64Counter {
if inst, err := mm.meter.NewFloat64Counter(name, cos...); err != nil {
panic(err)
} else {
return inst
}
}
// NewInt64UpDownCounter calls `Meter.NewInt64UpDownCounter` and returns the
// instrument, panicking if it encounters an error.
func (mm MeterMust) NewInt64UpDownCounter(name string, cos ...InstrumentOption) Int64UpDownCounter {
if inst, err := mm.meter.NewInt64UpDownCounter(name, cos...); err != nil {
panic(err)
} else {
return inst
}
}
// NewFloat64UpDownCounter calls `Meter.NewFloat64UpDownCounter` and returns the
// instrument, panicking if it encounters an error.
func (mm MeterMust) NewFloat64UpDownCounter(name string, cos ...InstrumentOption) Float64UpDownCounter {
if inst, err := mm.meter.NewFloat64UpDownCounter(name, cos...); err != nil {
panic(err)
} else {
return inst
}
}
// NewInt64ValueRecorder calls `Meter.NewInt64ValueRecorder` and returns the
// instrument, panicking if it encounters an error.
func (mm MeterMust) NewInt64ValueRecorder(name string, mos ...InstrumentOption) Int64ValueRecorder {
if inst, err := mm.meter.NewInt64ValueRecorder(name, mos...); err != nil {
panic(err)
} else {
return inst
}
}
// NewFloat64ValueRecorder calls `Meter.NewFloat64ValueRecorder` and returns the
// instrument, panicking if it encounters an error.
func (mm MeterMust) NewFloat64ValueRecorder(name string, mos ...InstrumentOption) Float64ValueRecorder {
if inst, err := mm.meter.NewFloat64ValueRecorder(name, mos...); err != nil {
panic(err)
} else {
return inst
}
}
// NewInt64ValueObserver calls `Meter.NewInt64ValueObserver` and
// returns the instrument, panicking if it encounters an error.
func (mm MeterMust) NewInt64ValueObserver(name string, callback Int64ObserverFunc, oos ...InstrumentOption) Int64ValueObserver {
if inst, err := mm.meter.NewInt64ValueObserver(name, callback, oos...); err != nil {
panic(err)
} else {
return inst
}
}
// NewFloat64ValueObserver calls `Meter.NewFloat64ValueObserver` and
// returns the instrument, panicking if it encounters an error.
func (mm MeterMust) NewFloat64ValueObserver(name string, callback Float64ObserverFunc, oos ...InstrumentOption) Float64ValueObserver {
if inst, err := mm.meter.NewFloat64ValueObserver(name, callback, oos...); err != nil {
panic(err)
} else {
return inst
}
}
// NewInt64SumObserver calls `Meter.NewInt64SumObserver` and
// returns the instrument, panicking if it encounters an error.
func (mm MeterMust) NewInt64SumObserver(name string, callback Int64ObserverFunc, oos ...InstrumentOption) Int64SumObserver {
if inst, err := mm.meter.NewInt64SumObserver(name, callback, oos...); err != nil {
panic(err)
} else {
return inst
}
}
// NewFloat64SumObserver calls `Meter.NewFloat64SumObserver` and
// returns the instrument, panicking if it encounters an error.
func (mm MeterMust) NewFloat64SumObserver(name string, callback Float64ObserverFunc, oos ...InstrumentOption) Float64SumObserver {
if inst, err := mm.meter.NewFloat64SumObserver(name, callback, oos...); err != nil {
panic(err)
} else {
return inst
}
}
// NewInt64UpDownSumObserver calls `Meter.NewInt64UpDownSumObserver` and
// returns the instrument, panicking if it encounters an error.
func (mm MeterMust) NewInt64UpDownSumObserver(name string, callback Int64ObserverFunc, oos ...InstrumentOption) Int64UpDownSumObserver {
if inst, err := mm.meter.NewInt64UpDownSumObserver(name, callback, oos...); err != nil {
panic(err)
} else {
return inst
}
}
// NewFloat64UpDownSumObserver calls `Meter.NewFloat64UpDownSumObserver` and
// returns the instrument, panicking if it encounters an error.
func (mm MeterMust) NewFloat64UpDownSumObserver(name string, callback Float64ObserverFunc, oos ...InstrumentOption) Float64UpDownSumObserver {
if inst, err := mm.meter.NewFloat64UpDownSumObserver(name, callback, oos...); err != nil {
panic(err)
} else {
return inst
}
}
// NewBatchObserver returns a wrapper around BatchObserver that panics
// when any instrument constructor returns an error.
func (mm MeterMust) NewBatchObserver(callback BatchObserverFunc) BatchObserverMust {
return BatchObserverMust{
batch: mm.meter.NewBatchObserver(callback),
}
}
// NewInt64ValueObserver calls `BatchObserver.NewInt64ValueObserver` and
// returns the instrument, panicking if it encounters an error.
func (bm BatchObserverMust) NewInt64ValueObserver(name string, oos ...InstrumentOption) Int64ValueObserver {
if inst, err := bm.batch.NewInt64ValueObserver(name, oos...); err != nil {
panic(err)
} else {
return inst
}
}
// NewFloat64ValueObserver calls `BatchObserver.NewFloat64ValueObserver` and
// returns the instrument, panicking if it encounters an error.
func (bm BatchObserverMust) NewFloat64ValueObserver(name string, oos ...InstrumentOption) Float64ValueObserver {
if inst, err := bm.batch.NewFloat64ValueObserver(name, oos...); err != nil {
panic(err)
} else {
return inst
}
}
// NewInt64SumObserver calls `BatchObserver.NewInt64SumObserver` and
// returns the instrument, panicking if it encounters an error.
func (bm BatchObserverMust) NewInt64SumObserver(name string, oos ...InstrumentOption) Int64SumObserver {
if inst, err := bm.batch.NewInt64SumObserver(name, oos...); err != nil {
panic(err)
} else {
return inst
}
}
// NewFloat64SumObserver calls `BatchObserver.NewFloat64SumObserver` and
// returns the instrument, panicking if it encounters an error.
func (bm BatchObserverMust) NewFloat64SumObserver(name string, oos ...InstrumentOption) Float64SumObserver {
if inst, err := bm.batch.NewFloat64SumObserver(name, oos...); err != nil {
panic(err)
} else {
return inst
}
}
// NewInt64UpDownSumObserver calls `BatchObserver.NewInt64UpDownSumObserver` and
// returns the instrument, panicking if it encounters an error.
func (bm BatchObserverMust) NewInt64UpDownSumObserver(name string, oos ...InstrumentOption) Int64UpDownSumObserver {
if inst, err := bm.batch.NewInt64UpDownSumObserver(name, oos...); err != nil {
panic(err)
} else {
return inst
}
}
// NewFloat64UpDownSumObserver calls `BatchObserver.NewFloat64UpDownSumObserver` and
// returns the instrument, panicking if it encounters an error.
func (bm BatchObserverMust) NewFloat64UpDownSumObserver(name string, oos ...InstrumentOption) Float64UpDownSumObserver {
if inst, err := bm.batch.NewFloat64UpDownSumObserver(name, oos...); err != nil {
panic(err)
} else {
return inst
}
}
// Descriptor contains all the settings that describe an instrument,
// including its name, metric kind, number kind, and the configurable
// options.
type Descriptor struct {
name string
instrumentKind InstrumentKind
numberKind number.Kind
config InstrumentConfig
}
// NewDescriptor returns a Descriptor with the given contents.
func NewDescriptor(name string, ikind InstrumentKind, nkind number.Kind, opts ...InstrumentOption) Descriptor {
return Descriptor{
name: name,
instrumentKind: ikind,
numberKind: nkind,
config: NewInstrumentConfig(opts...),
}
}
// Name returns the metric instrument's name.
func (d Descriptor) Name() string {
return d.name
}
// InstrumentKind returns the specific kind of instrument.
func (d Descriptor) InstrumentKind() InstrumentKind {
return d.instrumentKind
}
// Description provides a human-readable description of the metric
// instrument.
func (d Descriptor) Description() string {
return d.config.Description
}
// Unit describes the units of the metric instrument. Unitless
// metrics return the empty string.
func (d Descriptor) Unit() unit.Unit {
return d.config.Unit
}
// NumberKind returns whether this instrument is declared over int64,
// float64, or uint64 values.
func (d Descriptor) NumberKind() number.Kind {
return d.numberKind
}
// InstrumentationName returns the name of the library that provided
// instrumentation for this instrument.
func (d Descriptor) InstrumentationName() string {
return d.config.InstrumentationName
}
// InstrumentationVersion returns the version of the library that provided
// instrumentation for this instrument.
func (d Descriptor) InstrumentationVersion() string {
return d.config.InstrumentationVersion
}

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@ -0,0 +1,777 @@
// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//go:generate stringer -type=InstrumentKind
package metric // import "go.opentelemetry.io/otel/metric"
import (
"context"
"errors"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/metric/number"
)
// ErrSDKReturnedNilImpl is returned when a new `MeterImpl` returns nil.
var ErrSDKReturnedNilImpl = errors.New("SDK returned a nil implementation")
// InstrumentKind describes the kind of instrument.
type InstrumentKind int8
const (
// ValueRecorderInstrumentKind indicates a ValueRecorder instrument.
ValueRecorderInstrumentKind InstrumentKind = iota
// ValueObserverInstrumentKind indicates an ValueObserver instrument.
ValueObserverInstrumentKind
// CounterInstrumentKind indicates a Counter instrument.
CounterInstrumentKind
// UpDownCounterInstrumentKind indicates a UpDownCounter instrument.
UpDownCounterInstrumentKind
// SumObserverInstrumentKind indicates a SumObserver instrument.
SumObserverInstrumentKind
// UpDownSumObserverInstrumentKind indicates a UpDownSumObserver
// instrument.
UpDownSumObserverInstrumentKind
)
// Synchronous returns whether this is a synchronous kind of instrument.
func (k InstrumentKind) Synchronous() bool {
switch k {
case CounterInstrumentKind, UpDownCounterInstrumentKind, ValueRecorderInstrumentKind:
return true
}
return false
}
// Asynchronous returns whether this is an asynchronous kind of instrument.
func (k InstrumentKind) Asynchronous() bool {
return !k.Synchronous()
}
// Adding returns whether this kind of instrument adds its inputs (as opposed to Grouping).
func (k InstrumentKind) Adding() bool {
switch k {
case CounterInstrumentKind, UpDownCounterInstrumentKind, SumObserverInstrumentKind, UpDownSumObserverInstrumentKind:
return true
}
return false
}
// Grouping returns whether this kind of instrument groups its inputs (as opposed to Adding).
func (k InstrumentKind) Grouping() bool {
return !k.Adding()
}
// Monotonic returns whether this kind of instrument exposes a non-decreasing sum.
func (k InstrumentKind) Monotonic() bool {
switch k {
case CounterInstrumentKind, SumObserverInstrumentKind:
return true
}
return false
}
// PrecomputedSum returns whether this kind of instrument receives precomputed sums.
func (k InstrumentKind) PrecomputedSum() bool {
return k.Adding() && k.Asynchronous()
}
// Observation is used for reporting an asynchronous batch of metric
// values. Instances of this type should be created by asynchronous
// instruments (e.g., Int64ValueObserver.Observation()).
type Observation struct {
// number needs to be aligned for 64-bit atomic operations.
number number.Number
instrument AsyncImpl
}
// Int64ObserverFunc is a type of callback that integral
// observers run.
type Int64ObserverFunc func(context.Context, Int64ObserverResult)
// Float64ObserverFunc is a type of callback that floating point
// observers run.
type Float64ObserverFunc func(context.Context, Float64ObserverResult)
// BatchObserverFunc is a callback argument for use with any
// Observer instrument that will be reported as a batch of
// observations.
type BatchObserverFunc func(context.Context, BatchObserverResult)
// Int64ObserverResult is passed to an observer callback to capture
// observations for one asynchronous integer metric instrument.
type Int64ObserverResult struct {
instrument AsyncImpl
function func([]attribute.KeyValue, ...Observation)
}
// Float64ObserverResult is passed to an observer callback to capture
// observations for one asynchronous floating point metric instrument.
type Float64ObserverResult struct {
instrument AsyncImpl
function func([]attribute.KeyValue, ...Observation)
}
// BatchObserverResult is passed to a batch observer callback to
// capture observations for multiple asynchronous instruments.
type BatchObserverResult struct {
function func([]attribute.KeyValue, ...Observation)
}
// Observe captures a single integer value from the associated
// instrument callback, with the given labels.
func (ir Int64ObserverResult) Observe(value int64, labels ...attribute.KeyValue) {
ir.function(labels, Observation{
instrument: ir.instrument,
number: number.NewInt64Number(value),
})
}
// Observe captures a single floating point value from the associated
// instrument callback, with the given labels.
func (fr Float64ObserverResult) Observe(value float64, labels ...attribute.KeyValue) {
fr.function(labels, Observation{
instrument: fr.instrument,
number: number.NewFloat64Number(value),
})
}
// Observe captures a multiple observations from the associated batch
// instrument callback, with the given labels.
func (br BatchObserverResult) Observe(labels []attribute.KeyValue, obs ...Observation) {
br.function(labels, obs...)
}
// AsyncRunner is expected to convert into an AsyncSingleRunner or an
// AsyncBatchRunner. SDKs will encounter an error if the AsyncRunner
// does not satisfy one of these interfaces.
type AsyncRunner interface {
// AnyRunner() is a non-exported method with no functional use
// other than to make this a non-empty interface.
AnyRunner()
}
// AsyncSingleRunner is an interface implemented by single-observer
// callbacks.
type AsyncSingleRunner interface {
// Run accepts a single instrument and function for capturing
// observations of that instrument. Each call to the function
// receives one captured observation. (The function accepts
// multiple observations so the same implementation can be
// used for batch runners.)
Run(ctx context.Context, single AsyncImpl, capture func([]attribute.KeyValue, ...Observation))
AsyncRunner
}
// AsyncBatchRunner is an interface implemented by batch-observer
// callbacks.
type AsyncBatchRunner interface {
// Run accepts a function for capturing observations of
// multiple instruments.
Run(ctx context.Context, capture func([]attribute.KeyValue, ...Observation))
AsyncRunner
}
var _ AsyncSingleRunner = (*Int64ObserverFunc)(nil)
var _ AsyncSingleRunner = (*Float64ObserverFunc)(nil)
var _ AsyncBatchRunner = (*BatchObserverFunc)(nil)
// newInt64AsyncRunner returns a single-observer callback for integer Observer instruments.
func newInt64AsyncRunner(c Int64ObserverFunc) AsyncSingleRunner {
return &c
}
// newFloat64AsyncRunner returns a single-observer callback for floating point Observer instruments.
func newFloat64AsyncRunner(c Float64ObserverFunc) AsyncSingleRunner {
return &c
}
// newBatchAsyncRunner returns a batch-observer callback use with multiple Observer instruments.
func newBatchAsyncRunner(c BatchObserverFunc) AsyncBatchRunner {
return &c
}
// AnyRunner implements AsyncRunner.
func (*Int64ObserverFunc) AnyRunner() {}
// AnyRunner implements AsyncRunner.
func (*Float64ObserverFunc) AnyRunner() {}
// AnyRunner implements AsyncRunner.
func (*BatchObserverFunc) AnyRunner() {}
// Run implements AsyncSingleRunner.
func (i *Int64ObserverFunc) Run(ctx context.Context, impl AsyncImpl, function func([]attribute.KeyValue, ...Observation)) {
(*i)(ctx, Int64ObserverResult{
instrument: impl,
function: function,
})
}
// Run implements AsyncSingleRunner.
func (f *Float64ObserverFunc) Run(ctx context.Context, impl AsyncImpl, function func([]attribute.KeyValue, ...Observation)) {
(*f)(ctx, Float64ObserverResult{
instrument: impl,
function: function,
})
}
// Run implements AsyncBatchRunner.
func (b *BatchObserverFunc) Run(ctx context.Context, function func([]attribute.KeyValue, ...Observation)) {
(*b)(ctx, BatchObserverResult{
function: function,
})
}
// wrapInt64ValueObserverInstrument converts an AsyncImpl into Int64ValueObserver.
func wrapInt64ValueObserverInstrument(asyncInst AsyncImpl, err error) (Int64ValueObserver, error) {
common, err := checkNewAsync(asyncInst, err)
return Int64ValueObserver{asyncInstrument: common}, err
}
// wrapFloat64ValueObserverInstrument converts an AsyncImpl into Float64ValueObserver.
func wrapFloat64ValueObserverInstrument(asyncInst AsyncImpl, err error) (Float64ValueObserver, error) {
common, err := checkNewAsync(asyncInst, err)
return Float64ValueObserver{asyncInstrument: common}, err
}
// wrapInt64SumObserverInstrument converts an AsyncImpl into Int64SumObserver.
func wrapInt64SumObserverInstrument(asyncInst AsyncImpl, err error) (Int64SumObserver, error) {
common, err := checkNewAsync(asyncInst, err)
return Int64SumObserver{asyncInstrument: common}, err
}
// wrapFloat64SumObserverInstrument converts an AsyncImpl into Float64SumObserver.
func wrapFloat64SumObserverInstrument(asyncInst AsyncImpl, err error) (Float64SumObserver, error) {
common, err := checkNewAsync(asyncInst, err)
return Float64SumObserver{asyncInstrument: common}, err
}
// wrapInt64UpDownSumObserverInstrument converts an AsyncImpl into Int64UpDownSumObserver.
func wrapInt64UpDownSumObserverInstrument(asyncInst AsyncImpl, err error) (Int64UpDownSumObserver, error) {
common, err := checkNewAsync(asyncInst, err)
return Int64UpDownSumObserver{asyncInstrument: common}, err
}
// wrapFloat64UpDownSumObserverInstrument converts an AsyncImpl into Float64UpDownSumObserver.
func wrapFloat64UpDownSumObserverInstrument(asyncInst AsyncImpl, err error) (Float64UpDownSumObserver, error) {
common, err := checkNewAsync(asyncInst, err)
return Float64UpDownSumObserver{asyncInstrument: common}, err
}
// BatchObserver represents an Observer callback that can report
// observations for multiple instruments.
type BatchObserver struct {
meter Meter
runner AsyncBatchRunner
}
// Int64ValueObserver is a metric that captures a set of int64 values at a
// point in time.
type Int64ValueObserver struct {
asyncInstrument
}
// Float64ValueObserver is a metric that captures a set of float64 values
// at a point in time.
type Float64ValueObserver struct {
asyncInstrument
}
// Int64SumObserver is a metric that captures a precomputed sum of
// int64 values at a point in time.
type Int64SumObserver struct {
asyncInstrument
}
// Float64SumObserver is a metric that captures a precomputed sum of
// float64 values at a point in time.
type Float64SumObserver struct {
asyncInstrument
}
// Int64UpDownSumObserver is a metric that captures a precomputed sum of
// int64 values at a point in time.
type Int64UpDownSumObserver struct {
asyncInstrument
}
// Float64UpDownSumObserver is a metric that captures a precomputed sum of
// float64 values at a point in time.
type Float64UpDownSumObserver struct {
asyncInstrument
}
// Observation returns an Observation, a BatchObserverFunc
// argument, for an asynchronous integer instrument.
// This returns an implementation-level object for use by the SDK,
// users should not refer to this.
func (i Int64ValueObserver) Observation(v int64) Observation {
return Observation{
number: number.NewInt64Number(v),
instrument: i.instrument,
}
}
// Observation returns an Observation, a BatchObserverFunc
// argument, for an asynchronous integer instrument.
// This returns an implementation-level object for use by the SDK,
// users should not refer to this.
func (f Float64ValueObserver) Observation(v float64) Observation {
return Observation{
number: number.NewFloat64Number(v),
instrument: f.instrument,
}
}
// Observation returns an Observation, a BatchObserverFunc
// argument, for an asynchronous integer instrument.
// This returns an implementation-level object for use by the SDK,
// users should not refer to this.
func (i Int64SumObserver) Observation(v int64) Observation {
return Observation{
number: number.NewInt64Number(v),
instrument: i.instrument,
}
}
// Observation returns an Observation, a BatchObserverFunc
// argument, for an asynchronous integer instrument.
// This returns an implementation-level object for use by the SDK,
// users should not refer to this.
func (f Float64SumObserver) Observation(v float64) Observation {
return Observation{
number: number.NewFloat64Number(v),
instrument: f.instrument,
}
}
// Observation returns an Observation, a BatchObserverFunc
// argument, for an asynchronous integer instrument.
// This returns an implementation-level object for use by the SDK,
// users should not refer to this.
func (i Int64UpDownSumObserver) Observation(v int64) Observation {
return Observation{
number: number.NewInt64Number(v),
instrument: i.instrument,
}
}
// Observation returns an Observation, a BatchObserverFunc
// argument, for an asynchronous integer instrument.
// This returns an implementation-level object for use by the SDK,
// users should not refer to this.
func (f Float64UpDownSumObserver) Observation(v float64) Observation {
return Observation{
number: number.NewFloat64Number(v),
instrument: f.instrument,
}
}
// Measurement is used for reporting a synchronous batch of metric
// values. Instances of this type should be created by synchronous
// instruments (e.g., Int64Counter.Measurement()).
type Measurement struct {
// number needs to be aligned for 64-bit atomic operations.
number number.Number
instrument SyncImpl
}
// syncInstrument contains a SyncImpl.
type syncInstrument struct {
instrument SyncImpl
}
// syncBoundInstrument contains a BoundSyncImpl.
type syncBoundInstrument struct {
boundInstrument BoundSyncImpl
}
// asyncInstrument contains a AsyncImpl.
type asyncInstrument struct {
instrument AsyncImpl
}
// SyncImpl returns the instrument that created this measurement.
// This returns an implementation-level object for use by the SDK,
// users should not refer to this.
func (m Measurement) SyncImpl() SyncImpl {
return m.instrument
}
// Number returns a number recorded in this measurement.
func (m Measurement) Number() number.Number {
return m.number
}
// AsyncImpl returns the instrument that created this observation.
// This returns an implementation-level object for use by the SDK,
// users should not refer to this.
func (m Observation) AsyncImpl() AsyncImpl {
return m.instrument
}
// Number returns a number recorded in this observation.
func (m Observation) Number() number.Number {
return m.number
}
// AsyncImpl implements AsyncImpl.
func (a asyncInstrument) AsyncImpl() AsyncImpl {
return a.instrument
}
// SyncImpl returns the implementation object for synchronous instruments.
func (s syncInstrument) SyncImpl() SyncImpl {
return s.instrument
}
func (s syncInstrument) bind(labels []attribute.KeyValue) syncBoundInstrument {
return newSyncBoundInstrument(s.instrument.Bind(labels))
}
func (s syncInstrument) float64Measurement(value float64) Measurement {
return newMeasurement(s.instrument, number.NewFloat64Number(value))
}
func (s syncInstrument) int64Measurement(value int64) Measurement {
return newMeasurement(s.instrument, number.NewInt64Number(value))
}
func (s syncInstrument) directRecord(ctx context.Context, number number.Number, labels []attribute.KeyValue) {
s.instrument.RecordOne(ctx, number, labels)
}
func (h syncBoundInstrument) directRecord(ctx context.Context, number number.Number) {
h.boundInstrument.RecordOne(ctx, number)
}
// Unbind calls SyncImpl.Unbind.
func (h syncBoundInstrument) Unbind() {
h.boundInstrument.Unbind()
}
// checkNewAsync receives an AsyncImpl and potential
// error, and returns the same types, checking for and ensuring that
// the returned interface is not nil.
func checkNewAsync(instrument AsyncImpl, err error) (asyncInstrument, error) {
if instrument == nil {
if err == nil {
err = ErrSDKReturnedNilImpl
}
instrument = NoopAsync{}
}
return asyncInstrument{
instrument: instrument,
}, err
}
// checkNewSync receives an SyncImpl and potential
// error, and returns the same types, checking for and ensuring that
// the returned interface is not nil.
func checkNewSync(instrument SyncImpl, err error) (syncInstrument, error) {
if instrument == nil {
if err == nil {
err = ErrSDKReturnedNilImpl
}
// Note: an alternate behavior would be to synthesize a new name
// or group all duplicately-named instruments of a certain type
// together and use a tag for the original name, e.g.,
// name = 'invalid.counter.int64'
// label = 'original-name=duplicate-counter-name'
instrument = NoopSync{}
}
return syncInstrument{
instrument: instrument,
}, err
}
func newSyncBoundInstrument(boundInstrument BoundSyncImpl) syncBoundInstrument {
return syncBoundInstrument{
boundInstrument: boundInstrument,
}
}
func newMeasurement(instrument SyncImpl, number number.Number) Measurement {
return Measurement{
instrument: instrument,
number: number,
}
}
// wrapInt64CounterInstrument converts a SyncImpl into Int64Counter.
func wrapInt64CounterInstrument(syncInst SyncImpl, err error) (Int64Counter, error) {
common, err := checkNewSync(syncInst, err)
return Int64Counter{syncInstrument: common}, err
}
// wrapFloat64CounterInstrument converts a SyncImpl into Float64Counter.
func wrapFloat64CounterInstrument(syncInst SyncImpl, err error) (Float64Counter, error) {
common, err := checkNewSync(syncInst, err)
return Float64Counter{syncInstrument: common}, err
}
// wrapInt64UpDownCounterInstrument converts a SyncImpl into Int64UpDownCounter.
func wrapInt64UpDownCounterInstrument(syncInst SyncImpl, err error) (Int64UpDownCounter, error) {
common, err := checkNewSync(syncInst, err)
return Int64UpDownCounter{syncInstrument: common}, err
}
// wrapFloat64UpDownCounterInstrument converts a SyncImpl into Float64UpDownCounter.
func wrapFloat64UpDownCounterInstrument(syncInst SyncImpl, err error) (Float64UpDownCounter, error) {
common, err := checkNewSync(syncInst, err)
return Float64UpDownCounter{syncInstrument: common}, err
}
// wrapInt64ValueRecorderInstrument converts a SyncImpl into Int64ValueRecorder.
func wrapInt64ValueRecorderInstrument(syncInst SyncImpl, err error) (Int64ValueRecorder, error) {
common, err := checkNewSync(syncInst, err)
return Int64ValueRecorder{syncInstrument: common}, err
}
// wrapFloat64ValueRecorderInstrument converts a SyncImpl into Float64ValueRecorder.
func wrapFloat64ValueRecorderInstrument(syncInst SyncImpl, err error) (Float64ValueRecorder, error) {
common, err := checkNewSync(syncInst, err)
return Float64ValueRecorder{syncInstrument: common}, err
}
// Float64Counter is a metric that accumulates float64 values.
type Float64Counter struct {
syncInstrument
}
// Int64Counter is a metric that accumulates int64 values.
type Int64Counter struct {
syncInstrument
}
// BoundFloat64Counter is a bound instrument for Float64Counter.
//
// It inherits the Unbind function from syncBoundInstrument.
type BoundFloat64Counter struct {
syncBoundInstrument
}
// BoundInt64Counter is a boundInstrument for Int64Counter.
//
// It inherits the Unbind function from syncBoundInstrument.
type BoundInt64Counter struct {
syncBoundInstrument
}
// Bind creates a bound instrument for this counter. The labels are
// associated with values recorded via subsequent calls to Record.
func (c Float64Counter) Bind(labels ...attribute.KeyValue) (h BoundFloat64Counter) {
h.syncBoundInstrument = c.bind(labels)
return
}
// Bind creates a bound instrument for this counter. The labels are
// associated with values recorded via subsequent calls to Record.
func (c Int64Counter) Bind(labels ...attribute.KeyValue) (h BoundInt64Counter) {
h.syncBoundInstrument = c.bind(labels)
return
}
// Measurement creates a Measurement object to use with batch
// recording.
func (c Float64Counter) Measurement(value float64) Measurement {
return c.float64Measurement(value)
}
// Measurement creates a Measurement object to use with batch
// recording.
func (c Int64Counter) Measurement(value int64) Measurement {
return c.int64Measurement(value)
}
// Add adds the value to the counter's sum. The labels should contain
// the keys and values to be associated with this value.
func (c Float64Counter) Add(ctx context.Context, value float64, labels ...attribute.KeyValue) {
c.directRecord(ctx, number.NewFloat64Number(value), labels)
}
// Add adds the value to the counter's sum. The labels should contain
// the keys and values to be associated with this value.
func (c Int64Counter) Add(ctx context.Context, value int64, labels ...attribute.KeyValue) {
c.directRecord(ctx, number.NewInt64Number(value), labels)
}
// Add adds the value to the counter's sum using the labels
// previously bound to this counter via Bind()
func (b BoundFloat64Counter) Add(ctx context.Context, value float64) {
b.directRecord(ctx, number.NewFloat64Number(value))
}
// Add adds the value to the counter's sum using the labels
// previously bound to this counter via Bind()
func (b BoundInt64Counter) Add(ctx context.Context, value int64) {
b.directRecord(ctx, number.NewInt64Number(value))
}
// Float64UpDownCounter is a metric instrument that sums floating
// point values.
type Float64UpDownCounter struct {
syncInstrument
}
// Int64UpDownCounter is a metric instrument that sums integer values.
type Int64UpDownCounter struct {
syncInstrument
}
// BoundFloat64UpDownCounter is a bound instrument for Float64UpDownCounter.
//
// It inherits the Unbind function from syncBoundInstrument.
type BoundFloat64UpDownCounter struct {
syncBoundInstrument
}
// BoundInt64UpDownCounter is a boundInstrument for Int64UpDownCounter.
//
// It inherits the Unbind function from syncBoundInstrument.
type BoundInt64UpDownCounter struct {
syncBoundInstrument
}
// Bind creates a bound instrument for this counter. The labels are
// associated with values recorded via subsequent calls to Record.
func (c Float64UpDownCounter) Bind(labels ...attribute.KeyValue) (h BoundFloat64UpDownCounter) {
h.syncBoundInstrument = c.bind(labels)
return
}
// Bind creates a bound instrument for this counter. The labels are
// associated with values recorded via subsequent calls to Record.
func (c Int64UpDownCounter) Bind(labels ...attribute.KeyValue) (h BoundInt64UpDownCounter) {
h.syncBoundInstrument = c.bind(labels)
return
}
// Measurement creates a Measurement object to use with batch
// recording.
func (c Float64UpDownCounter) Measurement(value float64) Measurement {
return c.float64Measurement(value)
}
// Measurement creates a Measurement object to use with batch
// recording.
func (c Int64UpDownCounter) Measurement(value int64) Measurement {
return c.int64Measurement(value)
}
// Add adds the value to the counter's sum. The labels should contain
// the keys and values to be associated with this value.
func (c Float64UpDownCounter) Add(ctx context.Context, value float64, labels ...attribute.KeyValue) {
c.directRecord(ctx, number.NewFloat64Number(value), labels)
}
// Add adds the value to the counter's sum. The labels should contain
// the keys and values to be associated with this value.
func (c Int64UpDownCounter) Add(ctx context.Context, value int64, labels ...attribute.KeyValue) {
c.directRecord(ctx, number.NewInt64Number(value), labels)
}
// Add adds the value to the counter's sum using the labels
// previously bound to this counter via Bind()
func (b BoundFloat64UpDownCounter) Add(ctx context.Context, value float64) {
b.directRecord(ctx, number.NewFloat64Number(value))
}
// Add adds the value to the counter's sum using the labels
// previously bound to this counter via Bind()
func (b BoundInt64UpDownCounter) Add(ctx context.Context, value int64) {
b.directRecord(ctx, number.NewInt64Number(value))
}
// Float64ValueRecorder is a metric that records float64 values.
type Float64ValueRecorder struct {
syncInstrument
}
// Int64ValueRecorder is a metric that records int64 values.
type Int64ValueRecorder struct {
syncInstrument
}
// BoundFloat64ValueRecorder is a bound instrument for Float64ValueRecorder.
//
// It inherits the Unbind function from syncBoundInstrument.
type BoundFloat64ValueRecorder struct {
syncBoundInstrument
}
// BoundInt64ValueRecorder is a bound instrument for Int64ValueRecorder.
//
// It inherits the Unbind function from syncBoundInstrument.
type BoundInt64ValueRecorder struct {
syncBoundInstrument
}
// Bind creates a bound instrument for this ValueRecorder. The labels are
// associated with values recorded via subsequent calls to Record.
func (c Float64ValueRecorder) Bind(labels ...attribute.KeyValue) (h BoundFloat64ValueRecorder) {
h.syncBoundInstrument = c.bind(labels)
return
}
// Bind creates a bound instrument for this ValueRecorder. The labels are
// associated with values recorded via subsequent calls to Record.
func (c Int64ValueRecorder) Bind(labels ...attribute.KeyValue) (h BoundInt64ValueRecorder) {
h.syncBoundInstrument = c.bind(labels)
return
}
// Measurement creates a Measurement object to use with batch
// recording.
func (c Float64ValueRecorder) Measurement(value float64) Measurement {
return c.float64Measurement(value)
}
// Measurement creates a Measurement object to use with batch
// recording.
func (c Int64ValueRecorder) Measurement(value int64) Measurement {
return c.int64Measurement(value)
}
// Record adds a new value to the list of ValueRecorder's records. The
// labels should contain the keys and values to be associated with
// this value.
func (c Float64ValueRecorder) Record(ctx context.Context, value float64, labels ...attribute.KeyValue) {
c.directRecord(ctx, number.NewFloat64Number(value), labels)
}
// Record adds a new value to the ValueRecorder's distribution. The
// labels should contain the keys and values to be associated with
// this value.
func (c Int64ValueRecorder) Record(ctx context.Context, value int64, labels ...attribute.KeyValue) {
c.directRecord(ctx, number.NewInt64Number(value), labels)
}
// Record adds a new value to the ValueRecorder's distribution using the labels
// previously bound to the ValueRecorder via Bind().
func (b BoundFloat64ValueRecorder) Record(ctx context.Context, value float64) {
b.directRecord(ctx, number.NewFloat64Number(value))
}
// Record adds a new value to the ValueRecorder's distribution using the labels
// previously bound to the ValueRecorder via Bind().
func (b BoundInt64ValueRecorder) Record(ctx context.Context, value int64) {
b.directRecord(ctx, number.NewInt64Number(value))
}

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vendor/go.opentelemetry.io/otel/metric/metric_noop.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package metric // import "go.opentelemetry.io/otel/metric"
import (
"context"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/metric/number"
)
type NoopMeterProvider struct{}
type noopInstrument struct{}
type noopBoundInstrument struct{}
type NoopSync struct{ noopInstrument }
type NoopAsync struct{ noopInstrument }
var _ MeterProvider = NoopMeterProvider{}
var _ SyncImpl = NoopSync{}
var _ BoundSyncImpl = noopBoundInstrument{}
var _ AsyncImpl = NoopAsync{}
func (NoopMeterProvider) Meter(_ string, _ ...MeterOption) Meter {
return Meter{}
}
func (noopInstrument) Implementation() interface{} {
return nil
}
func (noopInstrument) Descriptor() Descriptor {
return Descriptor{}
}
func (noopBoundInstrument) RecordOne(context.Context, number.Number) {
}
func (noopBoundInstrument) Unbind() {
}
func (NoopSync) Bind([]attribute.KeyValue) BoundSyncImpl {
return noopBoundInstrument{}
}
func (NoopSync) RecordOne(context.Context, number.Number, []attribute.KeyValue) {
}

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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package metric // import "go.opentelemetry.io/otel/metric"
import (
"context"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/metric/number"
)
// MeterImpl is the interface an SDK must implement to supply a Meter
// implementation.
type MeterImpl interface {
// RecordBatch atomically records a batch of measurements.
RecordBatch(ctx context.Context, labels []attribute.KeyValue, measurement ...Measurement)
// NewSyncInstrument returns a newly constructed
// synchronous instrument implementation or an error, should
// one occur.
NewSyncInstrument(descriptor Descriptor) (SyncImpl, error)
// NewAsyncInstrument returns a newly constructed
// asynchronous instrument implementation or an error, should
// one occur.
NewAsyncInstrument(
descriptor Descriptor,
runner AsyncRunner,
) (AsyncImpl, error)
}
// InstrumentImpl is a common interface for synchronous and
// asynchronous instruments.
type InstrumentImpl interface {
// Implementation returns the underlying implementation of the
// instrument, which allows the implementation to gain access
// to its own representation especially from a `Measurement`.
Implementation() interface{}
// Descriptor returns a copy of the instrument's Descriptor.
Descriptor() Descriptor
}
// SyncImpl is the implementation-level interface to a generic
// synchronous instrument (e.g., ValueRecorder and Counter instruments).
type SyncImpl interface {
InstrumentImpl
// Bind creates an implementation-level bound instrument,
// binding a label set with this instrument implementation.
Bind(labels []attribute.KeyValue) BoundSyncImpl
// RecordOne captures a single synchronous metric event.
RecordOne(ctx context.Context, number number.Number, labels []attribute.KeyValue)
}
// BoundSyncImpl is the implementation-level interface to a
// generic bound synchronous instrument
type BoundSyncImpl interface {
// RecordOne captures a single synchronous metric event.
RecordOne(ctx context.Context, number number.Number)
// Unbind frees the resources associated with this bound instrument. It
// does not affect the metric this bound instrument was created through.
Unbind()
}
// AsyncImpl is an implementation-level interface to an
// asynchronous instrument (e.g., Observer instruments).
type AsyncImpl interface {
InstrumentImpl
}
// WrapMeterImpl constructs a `Meter` implementation from a
// `MeterImpl` implementation.
func WrapMeterImpl(impl MeterImpl, instrumentationName string, opts ...MeterOption) Meter {
return Meter{
impl: impl,
name: instrumentationName,
version: NewMeterConfig(opts...).InstrumentationVersion,
}
}

23
vendor/go.opentelemetry.io/otel/metric/number/doc.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/*
Package number provides a number abstraction for instruments that
either support int64 or float64 input values.
This package is currently in a pre-GA phase. Backwards incompatible changes
may be introduced in subsequent minor version releases as we work to track the
evolving OpenTelemetry specification and user feedback.
*/
package number // import "go.opentelemetry.io/otel/metric/number"

24
vendor/go.opentelemetry.io/otel/metric/number/kind_string.go generated vendored Normal file
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// Code generated by "stringer -type=Kind"; DO NOT EDIT.
package number
import "strconv"
func _() {
// An "invalid array index" compiler error signifies that the constant values have changed.
// Re-run the stringer command to generate them again.
var x [1]struct{}
_ = x[Int64Kind-0]
_ = x[Float64Kind-1]
}
const _Kind_name = "Int64KindFloat64Kind"
var _Kind_index = [...]uint8{0, 9, 20}
func (i Kind) String() string {
if i < 0 || i >= Kind(len(_Kind_index)-1) {
return "Kind(" + strconv.FormatInt(int64(i), 10) + ")"
}
return _Kind_name[_Kind_index[i]:_Kind_index[i+1]]
}

538
vendor/go.opentelemetry.io/otel/metric/number/number.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package number // import "go.opentelemetry.io/otel/metric/number"
//go:generate stringer -type=Kind
import (
"fmt"
"math"
"sync/atomic"
"go.opentelemetry.io/otel/internal"
)
// Kind describes the data type of the Number.
type Kind int8
const (
// Int64Kind means that the Number stores int64.
Int64Kind Kind = iota
// Float64Kind means that the Number stores float64.
Float64Kind
)
// Zero returns a zero value for a given Kind
func (k Kind) Zero() Number {
switch k {
case Int64Kind:
return NewInt64Number(0)
case Float64Kind:
return NewFloat64Number(0.)
default:
return Number(0)
}
}
// Minimum returns the minimum representable value
// for a given Kind
func (k Kind) Minimum() Number {
switch k {
case Int64Kind:
return NewInt64Number(math.MinInt64)
case Float64Kind:
return NewFloat64Number(-1. * math.MaxFloat64)
default:
return Number(0)
}
}
// Maximum returns the maximum representable value
// for a given Kind
func (k Kind) Maximum() Number {
switch k {
case Int64Kind:
return NewInt64Number(math.MaxInt64)
case Float64Kind:
return NewFloat64Number(math.MaxFloat64)
default:
return Number(0)
}
}
// Number represents either an integral or a floating point value. It
// needs to be accompanied with a source of Kind that describes
// the actual type of the value stored within Number.
type Number uint64
// - constructors
// NewNumberFromRaw creates a new Number from a raw value.
func NewNumberFromRaw(r uint64) Number {
return Number(r)
}
// NewInt64Number creates an integral Number.
func NewInt64Number(i int64) Number {
return NewNumberFromRaw(internal.Int64ToRaw(i))
}
// NewFloat64Number creates a floating point Number.
func NewFloat64Number(f float64) Number {
return NewNumberFromRaw(internal.Float64ToRaw(f))
}
// NewNumberSignChange returns a number with the same magnitude and
// the opposite sign. `kind` must describe the kind of number in `nn`.
func NewNumberSignChange(kind Kind, nn Number) Number {
switch kind {
case Int64Kind:
return NewInt64Number(-nn.AsInt64())
case Float64Kind:
return NewFloat64Number(-nn.AsFloat64())
}
return nn
}
// - as x
// AsNumber gets the Number.
func (n *Number) AsNumber() Number {
return *n
}
// AsRaw gets the uninterpreted raw value. Might be useful for some
// atomic operations.
func (n *Number) AsRaw() uint64 {
return uint64(*n)
}
// AsInt64 assumes that the value contains an int64 and returns it as
// such.
func (n *Number) AsInt64() int64 {
return internal.RawToInt64(n.AsRaw())
}
// AsFloat64 assumes that the measurement value contains a float64 and
// returns it as such.
func (n *Number) AsFloat64() float64 {
return internal.RawToFloat64(n.AsRaw())
}
// - as x atomic
// AsNumberAtomic gets the Number atomically.
func (n *Number) AsNumberAtomic() Number {
return NewNumberFromRaw(n.AsRawAtomic())
}
// AsRawAtomic gets the uninterpreted raw value atomically. Might be
// useful for some atomic operations.
func (n *Number) AsRawAtomic() uint64 {
return atomic.LoadUint64(n.AsRawPtr())
}
// AsInt64Atomic assumes that the number contains an int64 and returns
// it as such atomically.
func (n *Number) AsInt64Atomic() int64 {
return atomic.LoadInt64(n.AsInt64Ptr())
}
// AsFloat64Atomic assumes that the measurement value contains a
// float64 and returns it as such atomically.
func (n *Number) AsFloat64Atomic() float64 {
return internal.RawToFloat64(n.AsRawAtomic())
}
// - as x ptr
// AsRawPtr gets the pointer to the raw, uninterpreted raw
// value. Might be useful for some atomic operations.
func (n *Number) AsRawPtr() *uint64 {
return (*uint64)(n)
}
// AsInt64Ptr assumes that the number contains an int64 and returns a
// pointer to it.
func (n *Number) AsInt64Ptr() *int64 {
return internal.RawPtrToInt64Ptr(n.AsRawPtr())
}
// AsFloat64Ptr assumes that the number contains a float64 and returns a
// pointer to it.
func (n *Number) AsFloat64Ptr() *float64 {
return internal.RawPtrToFloat64Ptr(n.AsRawPtr())
}
// - coerce
// CoerceToInt64 casts the number to int64. May result in
// data/precision loss.
func (n *Number) CoerceToInt64(kind Kind) int64 {
switch kind {
case Int64Kind:
return n.AsInt64()
case Float64Kind:
return int64(n.AsFloat64())
default:
// you get what you deserve
return 0
}
}
// CoerceToFloat64 casts the number to float64. May result in
// data/precision loss.
func (n *Number) CoerceToFloat64(kind Kind) float64 {
switch kind {
case Int64Kind:
return float64(n.AsInt64())
case Float64Kind:
return n.AsFloat64()
default:
// you get what you deserve
return 0
}
}
// - set
// SetNumber sets the number to the passed number. Both should be of
// the same kind.
func (n *Number) SetNumber(nn Number) {
*n.AsRawPtr() = nn.AsRaw()
}
// SetRaw sets the number to the passed raw value. Both number and the
// raw number should represent the same kind.
func (n *Number) SetRaw(r uint64) {
*n.AsRawPtr() = r
}
// SetInt64 assumes that the number contains an int64 and sets it to
// the passed value.
func (n *Number) SetInt64(i int64) {
*n.AsInt64Ptr() = i
}
// SetFloat64 assumes that the number contains a float64 and sets it
// to the passed value.
func (n *Number) SetFloat64(f float64) {
*n.AsFloat64Ptr() = f
}
// - set atomic
// SetNumberAtomic sets the number to the passed number
// atomically. Both should be of the same kind.
func (n *Number) SetNumberAtomic(nn Number) {
atomic.StoreUint64(n.AsRawPtr(), nn.AsRaw())
}
// SetRawAtomic sets the number to the passed raw value
// atomically. Both number and the raw number should represent the
// same kind.
func (n *Number) SetRawAtomic(r uint64) {
atomic.StoreUint64(n.AsRawPtr(), r)
}
// SetInt64Atomic assumes that the number contains an int64 and sets
// it to the passed value atomically.
func (n *Number) SetInt64Atomic(i int64) {
atomic.StoreInt64(n.AsInt64Ptr(), i)
}
// SetFloat64Atomic assumes that the number contains a float64 and
// sets it to the passed value atomically.
func (n *Number) SetFloat64Atomic(f float64) {
atomic.StoreUint64(n.AsRawPtr(), internal.Float64ToRaw(f))
}
// - swap
// SwapNumber sets the number to the passed number and returns the old
// number. Both this number and the passed number should be of the
// same kind.
func (n *Number) SwapNumber(nn Number) Number {
old := *n
n.SetNumber(nn)
return old
}
// SwapRaw sets the number to the passed raw value and returns the old
// raw value. Both number and the raw number should represent the same
// kind.
func (n *Number) SwapRaw(r uint64) uint64 {
old := n.AsRaw()
n.SetRaw(r)
return old
}
// SwapInt64 assumes that the number contains an int64, sets it to the
// passed value and returns the old int64 value.
func (n *Number) SwapInt64(i int64) int64 {
old := n.AsInt64()
n.SetInt64(i)
return old
}
// SwapFloat64 assumes that the number contains an float64, sets it to
// the passed value and returns the old float64 value.
func (n *Number) SwapFloat64(f float64) float64 {
old := n.AsFloat64()
n.SetFloat64(f)
return old
}
// - swap atomic
// SwapNumberAtomic sets the number to the passed number and returns
// the old number atomically. Both this number and the passed number
// should be of the same kind.
func (n *Number) SwapNumberAtomic(nn Number) Number {
return NewNumberFromRaw(atomic.SwapUint64(n.AsRawPtr(), nn.AsRaw()))
}
// SwapRawAtomic sets the number to the passed raw value and returns
// the old raw value atomically. Both number and the raw number should
// represent the same kind.
func (n *Number) SwapRawAtomic(r uint64) uint64 {
return atomic.SwapUint64(n.AsRawPtr(), r)
}
// SwapInt64Atomic assumes that the number contains an int64, sets it
// to the passed value and returns the old int64 value atomically.
func (n *Number) SwapInt64Atomic(i int64) int64 {
return atomic.SwapInt64(n.AsInt64Ptr(), i)
}
// SwapFloat64Atomic assumes that the number contains an float64, sets
// it to the passed value and returns the old float64 value
// atomically.
func (n *Number) SwapFloat64Atomic(f float64) float64 {
return internal.RawToFloat64(atomic.SwapUint64(n.AsRawPtr(), internal.Float64ToRaw(f)))
}
// - add
// AddNumber assumes that this and the passed number are of the passed
// kind and adds the passed number to this number.
func (n *Number) AddNumber(kind Kind, nn Number) {
switch kind {
case Int64Kind:
n.AddInt64(nn.AsInt64())
case Float64Kind:
n.AddFloat64(nn.AsFloat64())
}
}
// AddRaw assumes that this number and the passed raw value are of the
// passed kind and adds the passed raw value to this number.
func (n *Number) AddRaw(kind Kind, r uint64) {
n.AddNumber(kind, NewNumberFromRaw(r))
}
// AddInt64 assumes that the number contains an int64 and adds the
// passed int64 to it.
func (n *Number) AddInt64(i int64) {
*n.AsInt64Ptr() += i
}
// AddFloat64 assumes that the number contains a float64 and adds the
// passed float64 to it.
func (n *Number) AddFloat64(f float64) {
*n.AsFloat64Ptr() += f
}
// - add atomic
// AddNumberAtomic assumes that this and the passed number are of the
// passed kind and adds the passed number to this number atomically.
func (n *Number) AddNumberAtomic(kind Kind, nn Number) {
switch kind {
case Int64Kind:
n.AddInt64Atomic(nn.AsInt64())
case Float64Kind:
n.AddFloat64Atomic(nn.AsFloat64())
}
}
// AddRawAtomic assumes that this number and the passed raw value are
// of the passed kind and adds the passed raw value to this number
// atomically.
func (n *Number) AddRawAtomic(kind Kind, r uint64) {
n.AddNumberAtomic(kind, NewNumberFromRaw(r))
}
// AddInt64Atomic assumes that the number contains an int64 and adds
// the passed int64 to it atomically.
func (n *Number) AddInt64Atomic(i int64) {
atomic.AddInt64(n.AsInt64Ptr(), i)
}
// AddFloat64Atomic assumes that the number contains a float64 and
// adds the passed float64 to it atomically.
func (n *Number) AddFloat64Atomic(f float64) {
for {
o := n.AsFloat64Atomic()
if n.CompareAndSwapFloat64(o, o+f) {
break
}
}
}
// - compare and swap (atomic only)
// CompareAndSwapNumber does the atomic CAS operation on this
// number. This number and passed old and new numbers should be of the
// same kind.
func (n *Number) CompareAndSwapNumber(on, nn Number) bool {
return atomic.CompareAndSwapUint64(n.AsRawPtr(), on.AsRaw(), nn.AsRaw())
}
// CompareAndSwapRaw does the atomic CAS operation on this
// number. This number and passed old and new raw values should be of
// the same kind.
func (n *Number) CompareAndSwapRaw(or, nr uint64) bool {
return atomic.CompareAndSwapUint64(n.AsRawPtr(), or, nr)
}
// CompareAndSwapInt64 assumes that this number contains an int64 and
// does the atomic CAS operation on it.
func (n *Number) CompareAndSwapInt64(oi, ni int64) bool {
return atomic.CompareAndSwapInt64(n.AsInt64Ptr(), oi, ni)
}
// CompareAndSwapFloat64 assumes that this number contains a float64 and
// does the atomic CAS operation on it.
func (n *Number) CompareAndSwapFloat64(of, nf float64) bool {
return atomic.CompareAndSwapUint64(n.AsRawPtr(), internal.Float64ToRaw(of), internal.Float64ToRaw(nf))
}
// - compare
// CompareNumber compares two Numbers given their kind. Both numbers
// should have the same kind. This returns:
// 0 if the numbers are equal
// -1 if the subject `n` is less than the argument `nn`
// +1 if the subject `n` is greater than the argument `nn`
func (n *Number) CompareNumber(kind Kind, nn Number) int {
switch kind {
case Int64Kind:
return n.CompareInt64(nn.AsInt64())
case Float64Kind:
return n.CompareFloat64(nn.AsFloat64())
default:
// you get what you deserve
return 0
}
}
// CompareRaw compares two numbers, where one is input as a raw
// uint64, interpreting both values as a `kind` of number.
func (n *Number) CompareRaw(kind Kind, r uint64) int {
return n.CompareNumber(kind, NewNumberFromRaw(r))
}
// CompareInt64 assumes that the Number contains an int64 and performs
// a comparison between the value and the other value. It returns the
// typical result of the compare function: -1 if the value is less
// than the other, 0 if both are equal, 1 if the value is greater than
// the other.
func (n *Number) CompareInt64(i int64) int {
this := n.AsInt64()
if this < i {
return -1
} else if this > i {
return 1
}
return 0
}
// CompareFloat64 assumes that the Number contains a float64 and
// performs a comparison between the value and the other value. It
// returns the typical result of the compare function: -1 if the value
// is less than the other, 0 if both are equal, 1 if the value is
// greater than the other.
//
// Do not compare NaN values.
func (n *Number) CompareFloat64(f float64) int {
this := n.AsFloat64()
if this < f {
return -1
} else if this > f {
return 1
}
return 0
}
// - relations to zero
// IsPositive returns true if the actual value is greater than zero.
func (n *Number) IsPositive(kind Kind) bool {
return n.compareWithZero(kind) > 0
}
// IsNegative returns true if the actual value is less than zero.
func (n *Number) IsNegative(kind Kind) bool {
return n.compareWithZero(kind) < 0
}
// IsZero returns true if the actual value is equal to zero.
func (n *Number) IsZero(kind Kind) bool {
return n.compareWithZero(kind) == 0
}
// - misc
// Emit returns a string representation of the raw value of the
// Number. A %d is used for integral values, %f for floating point
// values.
func (n *Number) Emit(kind Kind) string {
switch kind {
case Int64Kind:
return fmt.Sprintf("%d", n.AsInt64())
case Float64Kind:
return fmt.Sprintf("%f", n.AsFloat64())
default:
return ""
}
}
// AsInterface returns the number as an interface{}, typically used
// for Kind-correct JSON conversion.
func (n *Number) AsInterface(kind Kind) interface{} {
switch kind {
case Int64Kind:
return n.AsInt64()
case Float64Kind:
return n.AsFloat64()
default:
return math.NaN()
}
}
// - private stuff
func (n *Number) compareWithZero(kind Kind) int {
switch kind {
case Int64Kind:
return n.CompareInt64(0)
case Float64Kind:
return n.CompareFloat64(0.)
default:
// you get what you deserve
return 0
}
}

24
vendor/go.opentelemetry.io/otel/metric/registry/doc.go generated vendored Normal file
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@ -0,0 +1,24 @@
// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/*
Package registry provides a non-standalone implementation of
MeterProvider that adds uniqueness checking for instrument descriptors
on top of other MeterProvider it wraps.
This package is currently in a pre-GA phase. Backwards incompatible changes
may be introduced in subsequent minor version releases as we work to track the
evolving OpenTelemetry specification and user feedback.
*/
package registry // import "go.opentelemetry.io/otel/metric/registry"

170
vendor/go.opentelemetry.io/otel/metric/registry/registry.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package registry // import "go.opentelemetry.io/otel/metric/registry"
import (
"context"
"fmt"
"sync"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/metric"
)
// MeterProvider is a standard MeterProvider for wrapping `MeterImpl`
type MeterProvider struct {
impl metric.MeterImpl
}
var _ metric.MeterProvider = (*MeterProvider)(nil)
// uniqueInstrumentMeterImpl implements the metric.MeterImpl interface, adding
// uniqueness checking for instrument descriptors. Use NewUniqueInstrumentMeter
// to wrap an implementation with uniqueness checking.
type uniqueInstrumentMeterImpl struct {
lock sync.Mutex
impl metric.MeterImpl
state map[key]metric.InstrumentImpl
}
var _ metric.MeterImpl = (*uniqueInstrumentMeterImpl)(nil)
type key struct {
instrumentName string
instrumentationName string
InstrumentationVersion string
}
// NewMeterProvider returns a new provider that implements instrument
// name-uniqueness checking.
func NewMeterProvider(impl metric.MeterImpl) *MeterProvider {
return &MeterProvider{
impl: NewUniqueInstrumentMeterImpl(impl),
}
}
// Meter implements MeterProvider.
func (p *MeterProvider) Meter(instrumentationName string, opts ...metric.MeterOption) metric.Meter {
return metric.WrapMeterImpl(p.impl, instrumentationName, opts...)
}
// ErrMetricKindMismatch is the standard error for mismatched metric
// instrument definitions.
var ErrMetricKindMismatch = fmt.Errorf(
"a metric was already registered by this name with another kind or number type")
// NewUniqueInstrumentMeterImpl returns a wrapped metric.MeterImpl with
// the addition of uniqueness checking.
func NewUniqueInstrumentMeterImpl(impl metric.MeterImpl) metric.MeterImpl {
return &uniqueInstrumentMeterImpl{
impl: impl,
state: map[key]metric.InstrumentImpl{},
}
}
// RecordBatch implements metric.MeterImpl.
func (u *uniqueInstrumentMeterImpl) RecordBatch(ctx context.Context, labels []attribute.KeyValue, ms ...metric.Measurement) {
u.impl.RecordBatch(ctx, labels, ms...)
}
func keyOf(descriptor metric.Descriptor) key {
return key{
descriptor.Name(),
descriptor.InstrumentationName(),
descriptor.InstrumentationVersion(),
}
}
// NewMetricKindMismatchError formats an error that describes a
// mismatched metric instrument definition.
func NewMetricKindMismatchError(desc metric.Descriptor) error {
return fmt.Errorf("metric was %s (%s %s)registered as a %s %s: %w",
desc.Name(),
desc.InstrumentationName(),
desc.InstrumentationVersion(),
desc.NumberKind(),
desc.InstrumentKind(),
ErrMetricKindMismatch)
}
// Compatible determines whether two metric.Descriptors are considered
// the same for the purpose of uniqueness checking.
func Compatible(candidate, existing metric.Descriptor) bool {
return candidate.InstrumentKind() == existing.InstrumentKind() &&
candidate.NumberKind() == existing.NumberKind()
}
// checkUniqueness returns an ErrMetricKindMismatch error if there is
// a conflict between a descriptor that was already registered and the
// `descriptor` argument. If there is an existing compatible
// registration, this returns the already-registered instrument. If
// there is no conflict and no prior registration, returns (nil, nil).
func (u *uniqueInstrumentMeterImpl) checkUniqueness(descriptor metric.Descriptor) (metric.InstrumentImpl, error) {
impl, ok := u.state[keyOf(descriptor)]
if !ok {
return nil, nil
}
if !Compatible(descriptor, impl.Descriptor()) {
return nil, NewMetricKindMismatchError(impl.Descriptor())
}
return impl, nil
}
// NewSyncInstrument implements metric.MeterImpl.
func (u *uniqueInstrumentMeterImpl) NewSyncInstrument(descriptor metric.Descriptor) (metric.SyncImpl, error) {
u.lock.Lock()
defer u.lock.Unlock()
impl, err := u.checkUniqueness(descriptor)
if err != nil {
return nil, err
} else if impl != nil {
return impl.(metric.SyncImpl), nil
}
syncInst, err := u.impl.NewSyncInstrument(descriptor)
if err != nil {
return nil, err
}
u.state[keyOf(descriptor)] = syncInst
return syncInst, nil
}
// NewAsyncInstrument implements metric.MeterImpl.
func (u *uniqueInstrumentMeterImpl) NewAsyncInstrument(
descriptor metric.Descriptor,
runner metric.AsyncRunner,
) (metric.AsyncImpl, error) {
u.lock.Lock()
defer u.lock.Unlock()
impl, err := u.checkUniqueness(descriptor)
if err != nil {
return nil, err
} else if impl != nil {
return impl.(metric.AsyncImpl), nil
}
asyncInst, err := u.impl.NewAsyncInstrument(descriptor, runner)
if err != nil {
return nil, err
}
u.state[keyOf(descriptor)] = asyncInst
return asyncInst, nil
}

95
vendor/go.opentelemetry.io/otel/pre_release.sh generated vendored Normal file
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#!/bin/bash
# Copyright The OpenTelemetry Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
set -e
help()
{
printf "\n"
printf "Usage: $0 -t tag\n"
printf "\t-t Unreleased tag. Update all go.mod with this tag.\n"
exit 1 # Exit script after printing help
}
while getopts "t:" opt
do
case "$opt" in
t ) TAG="$OPTARG" ;;
? ) help ;; # Print help
esac
done
# Print help in case parameters are empty
if [ -z "$TAG" ]
then
printf "Tag is missing\n";
help
fi
# Validate semver
SEMVER_REGEX="^v(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)(\\-[0-9A-Za-z-]+(\\.[0-9A-Za-z-]+)*)?(\\+[0-9A-Za-z-]+(\\.[0-9A-Za-z-]+)*)?$"
if [[ "${TAG}" =~ ${SEMVER_REGEX} ]]; then
printf "${TAG} is valid semver tag.\n"
else
printf "${TAG} is not a valid semver tag.\n"
exit -1
fi
TAG_FOUND=`git tag --list ${TAG}`
if [[ ${TAG_FOUND} = ${TAG} ]] ; then
printf "Tag ${TAG} already exists\n"
exit -1
fi
# Get version for version.go
OTEL_VERSION=$(echo "${TAG}" | grep -o '^v[0-9]\+\.[0-9]\+\.[0-9]\+')
# Strip leading v
OTEL_VERSION="${OTEL_VERSION#v}"
cd $(dirname $0)
if ! git diff --quiet; then \
printf "Working tree is not clean, can't proceed with the release process\n"
git status
git diff
exit 1
fi
# Update version.go
cp ./version.go ./version.go.bak
sed "s/\(return \"\)[0-9]*\.[0-9]*\.[0-9]*\"/\1${OTEL_VERSION}\"/" ./version.go.bak >./version.go
rm -f ./version.go.bak
# Update go.mod
git checkout -b pre_release_${TAG} main
PACKAGE_DIRS=$(find . -mindepth 2 -type f -name 'go.mod' -exec dirname {} \; | egrep -v 'tools' | sed 's/^\.\///' | sort)
for dir in $PACKAGE_DIRS; do
cp "${dir}/go.mod" "${dir}/go.mod.bak"
sed "s/opentelemetry.io\/otel\([^ ]*\) v[0-9]*\.[0-9]*\.[0-9]/opentelemetry.io\/otel\1 ${TAG}/" "${dir}/go.mod.bak" >"${dir}/go.mod"
rm -f "${dir}/go.mod.bak"
done
# Run lint to update go.sum
make lint
# Add changes and commit.
git add .
make ci
git commit -m "Prepare for releasing $TAG"
printf "Now run following to verify the changes.\ngit diff main\n"
printf "\nThen push the changes to upstream\n"

31
vendor/go.opentelemetry.io/otel/propagation.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package otel // import "go.opentelemetry.io/otel"
import (
"go.opentelemetry.io/otel/internal/global"
"go.opentelemetry.io/otel/propagation"
)
// GetTextMapPropagator returns the global TextMapPropagator. If none has been
// set, a No-Op TextMapPropagator is returned.
func GetTextMapPropagator() propagation.TextMapPropagator {
return global.TextMapPropagator()
}
// SetTextMapPropagator sets propagator as the global TextMapPropagator.
func SetTextMapPropagator(propagator propagation.TextMapPropagator) {
global.SetTextMapPropagator(propagator)
}

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