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rebase: bump github.com/hashicorp/vault/api from 1.1.1 to 1.2.0

Browse Source 
Bumps [github.com/hashicorp/vault/api](https://github.com/hashicorp/vault) from 1.1.1 to 1.2.0.
- [Release notes](https://github.com/hashicorp/vault/releases)
- [Changelog](https://github.com/hashicorp/vault/blob/main/CHANGELOG.md)
- [Commits](https://github.com/hashicorp/vault/compare/v1.1.1...v1.2.0)

---
updated-dependencies:
- dependency-name: github.com/hashicorp/vault/api
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
This commit is contained in:
dependabot[bot] 2021-10-18 20:26:08 +00:00 committed by mergify[bot]
parent 9bd9f5e91d
commit 5280b67327
256 changed files with 30159 additions and 277 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
go.mod
View File

@ -13,7 +13,7 @@ require (
github.com/grpc-ecosystem/go-grpc-middleware v1.3.0
github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0
github.com/hashicorp/golang-lru v0.5.4 // indirect
github.com/hashicorp/vault/api v1.1.1
github.com/hashicorp/vault/api v1.2.0
github.com/kubernetes-csi/csi-lib-utils v0.10.0
github.com/kubernetes-csi/external-snapshotter/client/v4 v4.2.0
github.com/libopenstorage/secrets v0.0.0-20210908194121-a1d19aa9713a

27
go.sum
View File

@ -299,6 +299,7 @@ github.com/fatih/camelcase v1.0.0/go.mod h1:yN2Sb0lFhZJUdVvtELVWefmrXpuZESvPmqwo
github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
github.com/fatih/color v1.9.0 h1:8xPHl4/q1VyqGIPif1F+1V3Y3lSmrq01EabUW3CoW5s=
github.com/fatih/color v1.9.0/go.mod h1:eQcE1qtQxscV5RaZvpXrrb8Drkc3/DdQ+uUYCNjL+zU=
github.com/fatih/structs v1.1.0 h1:Q7juDM0QtcnhCpeyLGQKyg4TOIghuNXrkL32pHAUMxo=
github.com/fatih/structs v1.1.0/go.mod h1:9NiDSp5zOcgEDl+j00MP/WkGVPOlPRLejGD8Ga6PJ7M=
github.com/felixge/httpsnoop v1.0.1 h1:lvB5Jl89CsZtGIWuTcDM1E/vkVs49/Ml7JJe07l8SPQ=
github.com/felixge/httpsnoop v1.0.1/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
@ -309,8 +310,9 @@ github.com/form3tech-oss/jwt-go v3.2.3+incompatible/go.mod h1:pbq4aXjuKjdthFRnoD
github.com/frankban/quicktest v1.4.0/go.mod h1:36zfPVQyHxymz4cH7wlDmVwDrJuljRB60qkgn7rorfQ=
github.com/frankban/quicktest v1.4.1/go.mod h1:36zfPVQyHxymz4cH7wlDmVwDrJuljRB60qkgn7rorfQ=
github.com/frankban/quicktest v1.10.0/go.mod h1:ui7WezCLWMWxVWr1GETZY3smRy0G4KWq9vcPtJmFl7Y=
github.com/frankban/quicktest v1.11.3 h1:8sXhOn0uLys67V8EsXLc6eszDs8VXWxL3iRvebPhedY=
github.com/frankban/quicktest v1.11.3/go.mod h1:wRf/ReqHper53s+kmmSZizM8NamnL3IM0I9ntUbOk+k=
github.com/frankban/quicktest v1.13.0 h1:yNZif1OkDfNoDfb9zZa9aXIpejNR4F23Wely0c+Qdqk=
github.com/frankban/quicktest v1.13.0/go.mod h1:qLE0fzW0VuyUAJgPU19zByoIr0HtCHN/r/VLSOOIySU=
github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
@ -483,8 +485,9 @@ github.com/hashicorp/consul/api v1.1.0/go.mod h1:VmuI/Lkw1nC05EYQWNKwWGbkg+FbDBt
github.com/hashicorp/consul/api v1.4.0/go.mod h1:xc8u05kyMa3Wjr9eEAsIAo3dg8+LywT5E/Cl7cNS5nU=
github.com/hashicorp/consul/sdk v0.1.1/go.mod h1:VKf9jXwCTEY1QZP2MOLRhb5i/I/ssyNV1vwHyQBF0x8=
github.com/hashicorp/consul/sdk v0.4.0/go.mod h1:fY08Y9z5SvJqevyZNy6WWPXiG3KwBPAvlcdx16zZ0fM=
github.com/hashicorp/errwrap v1.0.0 h1:hLrqtEDnRye3+sgx6z4qVLNuviH3MR5aQ0ykNJa/UYA=
github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
github.com/hashicorp/errwrap v1.1.0 h1:OxrOeh75EUXMY8TBjag2fzXGZ40LB6IKw45YeGUDY2I=
github.com/hashicorp/errwrap v1.1.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
github.com/hashicorp/go-cleanhttp v0.5.0/go.mod h1:JpRdi6/HCYpAwUzNwuwqhbovhLtngrth3wmdIIUrZ80=
github.com/hashicorp/go-cleanhttp v0.5.1 h1:dH3aiDG9Jvb5r5+bYHsikaOUIpcM0xvgMXVoDkXMzJM=
github.com/hashicorp/go-cleanhttp v0.5.1/go.mod h1:JpRdi6/HCYpAwUzNwuwqhbovhLtngrth3wmdIIUrZ80=
@ -498,8 +501,8 @@ github.com/hashicorp/go-hclog v0.9.2/go.mod h1:5CU+agLiy3J7N7QjHK5d05KxGsuXiQLrj
github.com/hashicorp/go-hclog v0.10.1/go.mod h1:whpDNt7SSdeAju8AWKIWsul05p54N/39EeqMAyrmvFQ=
github.com/hashicorp/go-hclog v0.12.0/go.mod h1:whpDNt7SSdeAju8AWKIWsul05p54N/39EeqMAyrmvFQ=
github.com/hashicorp/go-hclog v0.14.1/go.mod h1:whpDNt7SSdeAju8AWKIWsul05p54N/39EeqMAyrmvFQ=
github.com/hashicorp/go-hclog v0.16.1 h1:IVQwpTGNRRIHafnTs2dQLIk4ENtneRIEEJWOVDqz99o=
github.com/hashicorp/go-hclog v0.16.1/go.mod h1:whpDNt7SSdeAju8AWKIWsul05p54N/39EeqMAyrmvFQ=
github.com/hashicorp/go-hclog v0.16.2 h1:K4ev2ib4LdQETX5cSZBG0DVLk1jwGqSPXBjdah3veNs=
github.com/hashicorp/go-hclog v0.16.2/go.mod h1:whpDNt7SSdeAju8AWKIWsul05p54N/39EeqMAyrmvFQ=
github.com/hashicorp/go-immutable-radix v1.0.0/go.mod h1:0y9vanUI8NX6FsYoO3zeMjhV/C5i9g4Q3DwcSNZ4P60=
github.com/hashicorp/go-immutable-radix v1.1.0 h1:vN9wG1D6KG6YHRTWr8512cxGOVgTMEfgEdSj/hr8MPc=
github.com/hashicorp/go-immutable-radix v1.1.0/go.mod h1:0y9vanUI8NX6FsYoO3zeMjhV/C5i9g4Q3DwcSNZ4P60=
@ -513,8 +516,9 @@ github.com/hashicorp/go-msgpack v0.5.3/go.mod h1:ahLV/dePpqEmjfWmKiqvPkv/twdG7iP
github.com/hashicorp/go-msgpack v0.5.5 h1:i9R9JSrqIz0QVLz3sz+i3YJdT7TTSLcfLLzJi9aZTuI=
github.com/hashicorp/go-msgpack v0.5.5/go.mod h1:ahLV/dePpqEmjfWmKiqvPkv/twdG7iPBM1vqhUKIvfM=
github.com/hashicorp/go-multierror v1.0.0/go.mod h1:dHtQlpGsu+cZNNAkkCN/P3hoUDHhCYQXV3UM06sGGrk=
github.com/hashicorp/go-multierror v1.1.0 h1:B9UzwGQJehnUY1yNrnwREHc3fGbC2xefo8g4TbElacI=
github.com/hashicorp/go-multierror v1.1.0/go.mod h1:spPvp8C1qA32ftKqdAHm4hHTbPw+vmowP0z+KUhOZdA=
github.com/hashicorp/go-multierror v1.1.1 h1:H5DkEtf6CXdFp0N0Em5UCwQpXMWke8IA0+lD48awMYo=
github.com/hashicorp/go-multierror v1.1.1/go.mod h1:iw975J/qwKPdAO1clOe2L8331t/9/fmwbPZ6JB6eMoM=
github.com/hashicorp/go-plugin v1.0.0/go.mod h1:++UyYGoz3o5w9ZzAdZxtQKrWWP+iqPBn3cQptSMzBuY=
github.com/hashicorp/go-plugin v1.0.1 h1:4OtAfUGbnKC6yS48p0CtMX2oFYtzFZVv6rok3cRWgnE=
github.com/hashicorp/go-plugin v1.0.1/go.mod h1:++UyYGoz3o5w9ZzAdZxtQKrWWP+iqPBn3cQptSMzBuY=
@ -529,6 +533,10 @@ github.com/hashicorp/go-rootcerts v1.0.0/go.mod h1:K6zTfqpRlCUIjkwsN4Z+hiSfzSTQa
github.com/hashicorp/go-rootcerts v1.0.1/go.mod h1:pqUvnprVnM5bf7AOirdbb01K4ccR319Vf4pU3K5EGc8=
github.com/hashicorp/go-rootcerts v1.0.2 h1:jzhAVGtqPKbwpyCPELlgNWhE1znq+qwJtW5Oi2viEzc=
github.com/hashicorp/go-rootcerts v1.0.2/go.mod h1:pqUvnprVnM5bf7AOirdbb01K4ccR319Vf4pU3K5EGc8=
github.com/hashicorp/go-secure-stdlib/parseutil v0.1.1 h1:78ki3QBevHwYrVxnyVeaEz+7WtifHhauYF23es/0KlI=
github.com/hashicorp/go-secure-stdlib/parseutil v0.1.1/go.mod h1:QmrqtbKuxxSWTN3ETMPuB+VtEiBJ/A9XhoYGv8E1uD8=
github.com/hashicorp/go-secure-stdlib/strutil v0.1.1 h1:nd0HIW15E6FG1MsnArYaHfuw9C2zgzM8LxkG5Ty/788=
github.com/hashicorp/go-secure-stdlib/strutil v0.1.1/go.mod h1:gKOamz3EwoIoJq7mlMIRBpVTAUn8qPCrEclOKKWhD3U=
github.com/hashicorp/go-sockaddr v1.0.0/go.mod h1:7Xibr9yA9JjQq1JpNB2Vw7kxv8xerXegt+ozgdvDeDU=
github.com/hashicorp/go-sockaddr v1.0.2 h1:ztczhD1jLxIRjVejw8gFomI1BQZOe2WoVOu0SyteCQc=
github.com/hashicorp/go-sockaddr v1.0.2/go.mod h1:rB4wwRAUzs07qva3c5SdrY/NEtAUjGlgmH/UkBUC97A=
@ -592,8 +600,8 @@ github.com/hashicorp/vault/api v1.0.5-0.20200215224050-f6547fa8e820/go.mod h1:3f
github.com/hashicorp/vault/api v1.0.5-0.20200317185738-82f498082f02/go.mod h1:3f12BMfgDGjTsTtIUj+ZKZwSobQpZtYGFIEehOv5z1o=
github.com/hashicorp/vault/api v1.0.5-0.20200519221902-385fac77e20f/go.mod h1:euTFbi2YJgwcju3imEt919lhJKF68nN1cQPq3aA+kBE=
github.com/hashicorp/vault/api v1.0.5-0.20200902155336-f9d5ce5a171a/go.mod h1:R3Umvhlxi2TN7Ex2hzOowyeNb+SfbVWI973N+ctaFMk=
github.com/hashicorp/vault/api v1.1.1 h1:907ld+Z9cALyvbZK2qUX9cLwvSaEQsMVQB3x2KE8+AI=
github.com/hashicorp/vault/api v1.1.1/go.mod h1:29UXcn/1cLOPHQNMWA7bCz2By4PSd0VKPAydKXS5yN0=
github.com/hashicorp/vault/api v1.2.0 h1:ysGFc6XRGbv05NsWPzuO5VTv68Lj8jtwATxRLFOpP9s=
github.com/hashicorp/vault/api v1.2.0/go.mod h1:dAjw0T5shMnrfH7Q/Mst+LrcTKvStZBVs1PICEDpUqY=
github.com/hashicorp/vault/sdk v0.1.8/go.mod h1:tHZfc6St71twLizWNHvnnbiGFo1aq0eD2jGPLtP8kAU=
github.com/hashicorp/vault/sdk v0.1.14-0.20190730042320-0dc007d98cc8/go.mod h1:B+hVj7TpuQY1Y/GPbCpffmgd+tSEwvhkWnjtSYCaS2M=
github.com/hashicorp/vault/sdk v0.1.14-0.20191108161836-82f2b5571044/go.mod h1:PcekaFGiPJyHnFy+NZhP6ll650zEw51Ag7g/YEa+EOU=
@ -746,8 +754,10 @@ github.com/mitchellh/hashstructure v1.0.0/go.mod h1:QjSHrPWS+BGUVBYkbTZWEnOh3G1D
github.com/mitchellh/iochan v1.0.0/go.mod h1:JwYml1nuB7xOzsp52dPpHFffvOCDupsG0QubkSMEySY=
github.com/mitchellh/mapstructure v0.0.0-20160808181253-ca63d7c062ee/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
github.com/mitchellh/mapstructure v1.3.2 h1:mRS76wmkOn3KkKAyXDu42V+6ebnXWIztFSYGN7GeoRg=
github.com/mitchellh/mapstructure v1.3.2/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
github.com/mitchellh/mapstructure v1.4.1/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
github.com/mitchellh/mapstructure v1.4.2 h1:6h7AQ0yhTcIsmFmnAwQls75jp2Gzs4iB8W7pjMO+rqo=
github.com/mitchellh/mapstructure v1.4.2/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
github.com/mitchellh/pointerstructure v0.0.0-20190430161007-f252a8fd71c8/go.mod h1:k4XwG94++jLVsSiTxo7qdIfXA9pj9EAeo0QsNNJOLZ8=
github.com/mitchellh/reflectwalk v1.0.0/go.mod h1:mSTlrgnPZtwu0c4WaC2kGObEpuNDbx0jmZXqmk4esnw=
github.com/mitchellh/reflectwalk v1.0.1 h1:FVzMWA5RllMAKIdUSC8mdWo3XtwoecrH79BY70sEEpE=
@ -842,6 +852,7 @@ github.com/ory/dockertest v3.3.4+incompatible/go.mod h1:1vX4m9wsvi00u5bseYwXaSnh
github.com/ory/dockertest v3.3.5+incompatible/go.mod h1:1vX4m9wsvi00u5bseYwXaSnhNrne+V0E6LAcBILJdPs=
github.com/oxtoacart/bpool v0.0.0-20150712133111-4e1c5567d7c2/go.mod h1:L3UMQOThbttwfYRNFOWLLVXMhk5Lkio4GGOtw5UrxS0=
github.com/pascaldekloe/goe v0.0.0-20180627143212-57f6aae5913c/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=
github.com/pascaldekloe/goe v0.1.0 h1:cBOtyMzM9HTpWjXfbbunk26uA6nG3a8n06Wieeh0MwY=
github.com/pascaldekloe/goe v0.1.0/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=
github.com/patrickmn/go-cache v0.0.0-20180815053127-5633e0862627/go.mod h1:3Qf8kWWT7OJRJbdiICTKqZju1ZixQ/KpMGzzAfe6+WQ=
github.com/patrickmn/go-cache v2.1.0+incompatible h1:HRMgzkcYKYpi3C8ajMPV8OFXaaRUnok+kx1WdO15EQc=

24
vendor/github.com/armon/go-metrics/.gitignore generated vendored Normal file
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@ -0,0 +1,24 @@
# Compiled Object files, Static and Dynamic libs (Shared Objects)
*.o
*.a
*.so
# Folders
_obj
_test
# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out
*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*
_testmain.go
*.exe
/metrics.out

13
vendor/github.com/armon/go-metrics/.travis.yml generated vendored Normal file
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@ -0,0 +1,13 @@
language: go
go:
- "1.x"
env:
- GO111MODULE=on
install:
- go get ./...
script:
- go test ./...

20
vendor/github.com/armon/go-metrics/LICENSE generated vendored Normal file
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@ -0,0 +1,20 @@
The MIT License (MIT)
Copyright (c) 2013 Armon Dadgar
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

91
vendor/github.com/armon/go-metrics/README.md generated vendored Normal file
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@ -0,0 +1,91 @@
go-metrics
==========
This library provides a `metrics` package which can be used to instrument code,
expose application metrics, and profile runtime performance in a flexible manner.
Current API: [![GoDoc](https://godoc.org/github.com/armon/go-metrics?status.svg)](https://godoc.org/github.com/armon/go-metrics)
Sinks
-----
The `metrics` package makes use of a `MetricSink` interface to support delivery
to any type of backend. Currently the following sinks are provided:
* StatsiteSink : Sinks to a [statsite](https://github.com/armon/statsite/) instance (TCP)
* StatsdSink: Sinks to a [StatsD](https://github.com/etsy/statsd/) / statsite instance (UDP)
* PrometheusSink: Sinks to a [Prometheus](http://prometheus.io/) metrics endpoint (exposed via HTTP for scrapes)
* InmemSink : Provides in-memory aggregation, can be used to export stats
* FanoutSink : Sinks to multiple sinks. Enables writing to multiple statsite instances for example.
* BlackholeSink : Sinks to nowhere
In addition to the sinks, the `InmemSignal` can be used to catch a signal,
and dump a formatted output of recent metrics. For example, when a process gets
a SIGUSR1, it can dump to stderr recent performance metrics for debugging.
Labels
------
Most metrics do have an equivalent ending with `WithLabels`, such methods
allow to push metrics with labels and use some features of underlying Sinks
(ex: translated into Prometheus labels).
Since some of these labels may increase greatly cardinality of metrics, the
library allow to filter labels using a blacklist/whitelist filtering system
which is global to all metrics.
* If `Config.AllowedLabels` is not nil, then only labels specified in this value will be sent to underlying Sink, otherwise, all labels are sent by default.
* If `Config.BlockedLabels` is not nil, any label specified in this value will not be sent to underlying Sinks.
By default, both `Config.AllowedLabels` and `Config.BlockedLabels` are nil, meaning that
no tags are filetered at all, but it allow to a user to globally block some tags with high
cardinality at application level.
Examples
--------
Here is an example of using the package:
```go
func SlowMethod() {
// Profiling the runtime of a method
defer metrics.MeasureSince([]string{"SlowMethod"}, time.Now())
}
// Configure a statsite sink as the global metrics sink
sink, _ := metrics.NewStatsiteSink("statsite:8125")
metrics.NewGlobal(metrics.DefaultConfig("service-name"), sink)
// Emit a Key/Value pair
metrics.EmitKey([]string{"questions", "meaning of life"}, 42)
```
Here is an example of setting up a signal handler:
```go
// Setup the inmem sink and signal handler
inm := metrics.NewInmemSink(10*time.Second, time.Minute)
sig := metrics.DefaultInmemSignal(inm)
metrics.NewGlobal(metrics.DefaultConfig("service-name"), inm)
// Run some code
inm.SetGauge([]string{"foo"}, 42)
inm.EmitKey([]string{"bar"}, 30)
inm.IncrCounter([]string{"baz"}, 42)
inm.IncrCounter([]string{"baz"}, 1)
inm.IncrCounter([]string{"baz"}, 80)
inm.AddSample([]string{"method", "wow"}, 42)
inm.AddSample([]string{"method", "wow"}, 100)
inm.AddSample([]string{"method", "wow"}, 22)
....
```
When a signal comes in, output like the following will be dumped to stderr:
[2014-01-28 14:57:33.04 -0800 PST][G] 'foo': 42.000
[2014-01-28 14:57:33.04 -0800 PST][P] 'bar': 30.000
[2014-01-28 14:57:33.04 -0800 PST][C] 'baz': Count: 3 Min: 1.000 Mean: 41.000 Max: 80.000 Stddev: 39.509
[2014-01-28 14:57:33.04 -0800 PST][S] 'method.wow': Count: 3 Min: 22.000 Mean: 54.667 Max: 100.000 Stddev: 40.513

12
vendor/github.com/armon/go-metrics/const_unix.go generated vendored Normal file
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@ -0,0 +1,12 @@
// +build !windows
package metrics
import (
"syscall"
)
const (
// DefaultSignal is used with DefaultInmemSignal
DefaultSignal = syscall.SIGUSR1
)

13
vendor/github.com/armon/go-metrics/const_windows.go generated vendored Normal file
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@ -0,0 +1,13 @@
// +build windows
package metrics
import (
"syscall"
)
const (
// DefaultSignal is used with DefaultInmemSignal
// Windows has no SIGUSR1, use SIGBREAK
DefaultSignal = syscall.Signal(21)
)

17
vendor/github.com/armon/go-metrics/go.mod generated vendored Normal file
View File

@ -0,0 +1,17 @@
module github.com/armon/go-metrics
go 1.12
require (
github.com/DataDog/datadog-go v3.2.0+incompatible
github.com/circonus-labs/circonus-gometrics v2.3.1+incompatible
github.com/circonus-labs/circonusllhist v0.1.3 // indirect
github.com/golang/protobuf v1.3.2
github.com/hashicorp/go-immutable-radix v1.0.0
github.com/hashicorp/go-retryablehttp v0.5.3 // indirect
github.com/pascaldekloe/goe v0.1.0
github.com/prometheus/client_golang v1.4.0
github.com/prometheus/client_model v0.2.0
github.com/prometheus/common v0.9.1
github.com/tv42/httpunix v0.0.0-20150427012821-b75d8614f926 // indirect
)

125
vendor/github.com/armon/go-metrics/go.sum generated vendored Normal file
View File

@ -0,0 +1,125 @@
github.com/DataDog/datadog-go v3.2.0+incompatible h1:qSG2N4FghB1He/r2mFrWKCaL7dXCilEuNEeAn20fdD4=
github.com/DataDog/datadog-go v3.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ=
github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973 h1:xJ4a3vCFaGF/jqvzLMYoU8P317H5OQ+Via4RmuPwCS0=
github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
github.com/circonus-labs/circonus-gometrics v2.3.1+incompatible h1:C29Ae4G5GtYyYMm1aztcyj/J5ckgJm2zwdDajFbx1NY=
github.com/circonus-labs/circonus-gometrics v2.3.1+incompatible/go.mod h1:nmEj6Dob7S7YxXgwXpfOuvO54S+tGdZdw9fuRZt25Ag=
github.com/circonus-labs/circonusllhist v0.1.3 h1:TJH+oke8D16535+jHExHj4nQvzlZrj7ug5D7I/orNUA=
github.com/circonus-labs/circonusllhist v0.1.3/go.mod h1:kMXHVDlOchFAehlya5ePtbp5jckzBHf4XRpQvBOLI+I=
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/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.2 h1:6nsPYzhq5kReh6QImI3k5qWzO4PEbvbIW2cwSfR/6xs=
github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
github.com/google/go-cmp v0.4.0 h1:xsAVV57WRhGj6kEIi8ReJzQlHHqcBYCElAvkovg3B/4=
github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
github.com/hashicorp/go-cleanhttp v0.5.0 h1:wvCrVc9TjDls6+YGAF2hAifE1E5U1+b4tH6KdvN3Gig=
github.com/hashicorp/go-cleanhttp v0.5.0/go.mod h1:JpRdi6/HCYpAwUzNwuwqhbovhLtngrth3wmdIIUrZ80=
github.com/hashicorp/go-immutable-radix v1.0.0 h1:AKDB1HM5PWEA7i4nhcpwOrO2byshxBjXVn/J/3+z5/0=
github.com/hashicorp/go-immutable-radix v1.0.0/go.mod h1:0y9vanUI8NX6FsYoO3zeMjhV/C5i9g4Q3DwcSNZ4P60=
github.com/hashicorp/go-retryablehttp v0.5.3 h1:QlWt0KvWT0lq8MFppF9tsJGF+ynG7ztc2KIPhzRGk7s=
github.com/hashicorp/go-retryablehttp v0.5.3/go.mod h1:9B5zBasrRhHXnJnui7y6sL7es7NDiJgTc6Er0maI1Xs=
github.com/hashicorp/go-uuid v1.0.0 h1:RS8zrF7PhGwyNPOtxSClXXj9HA8feRnJzgnI1RJCSnM=
github.com/hashicorp/go-uuid v1.0.0/go.mod h1:6SBZvOh/SIDV7/2o3Jml5SYk/TvGqwFJ/bN7x4byOro=
github.com/hashicorp/golang-lru v0.5.0 h1:CL2msUPvZTLb5O648aiLNJw3hnBxN2+1Jq8rCOH9wdo=
github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
github.com/json-iterator/go v1.1.9/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w=
github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFBFZlji/RkVcI2GknAs/DXo4wKdlNEc=
github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
github.com/matttproud/golang_protobuf_extensions v1.0.1 h1:4hp9jkHxhMHkqkrB3Ix0jegS5sx/RkqARlsWZ6pIwiU=
github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
github.com/pascaldekloe/goe v0.1.0 h1:cBOtyMzM9HTpWjXfbbunk26uA6nG3a8n06Wieeh0MwY=
github.com/pascaldekloe/goe v0.1.0/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=
github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
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_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
github.com/prometheus/client_golang v1.0.0/go.mod h1:db9x61etRT2tGnBNRi70OPL5FsnadC4Ky3P0J6CfImo=
github.com/prometheus/client_golang v1.4.0 h1:YVIb/fVcOTMSqtqZWSKnHpSLBxu8DKgxq8z6RuBZwqI=
github.com/prometheus/client_golang v1.4.0/go.mod h1:e9GMxYsXl05ICDXkRhurwBS4Q3OK1iX/F2sw+iXX5zU=
github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910 h1:idejC8f05m9MGOsuEi1ATq9shN03HrxNkD/luQvxCv8=
github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
github.com/prometheus/client_model v0.2.0 h1:uq5h0d+GuxiXLJLNABMgp2qUWDPiLvgCzz2dUR+/W/M=
github.com/prometheus/client_model v0.2.0/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
github.com/prometheus/common v0.4.1/go.mod h1:TNfzLD0ON7rHzMJeJkieUDPYmFC7Snx/y86RQel1bk4=
github.com/prometheus/common v0.9.1 h1:KOMtN28tlbam3/7ZKEYKHhKoJZYYj3gMH4uc62x7X7U=
github.com/prometheus/common v0.9.1/go.mod h1:yhUN8i9wzaXS3w1O07YhxHEBxD+W35wd8bs7vj7HSQ4=
github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
github.com/prometheus/procfs v0.0.2/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsTZCD3I8kEA=
github.com/prometheus/procfs v0.0.8 h1:+fpWZdT24pJBiqJdAwYBjPSk+5YmQzYNPYzQsdzLkt8=
github.com/prometheus/procfs v0.0.8/go.mod h1:7Qr8sr6344vo1JqZ6HhLceV9o3AJ1Ff+GxbHq6oeK9A=
github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
github.com/stretchr/objx v0.1.0 h1:4G4v2dO3VZwixGIRoQ5Lfboy6nUhCyYzaqnIAPPhYs4=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/objx v0.1.1 h1:2vfRuCMp5sSVIDSqO8oNnWJq7mPa6KVP3iPIwFBuy8A=
github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
github.com/tv42/httpunix v0.0.0-20150427012821-b75d8614f926 h1:G3dpKMzFDjgEh2q1Z7zUUtKa8ViPtH+ocF0bE0g00O8=
github.com/tv42/httpunix v0.0.0-20150427012821-b75d8614f926/go.mod h1:9ESjWnEqriFuLhtthL60Sar/7RFoluCcXsuvEwTV5KM=
golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/sync v0.0.0-20181108010431-42b317875d0f h1:Bl/8QSvNqXvPGPGXa2z5xUTmV7VDcZyvRZ+QQXkXTZQ=
golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200122134326-e047566fdf82 h1:ywK/j/KkyTHcdyYSZNXGjMwgmDSfjglYZ3vStQ/gSCU=
golang.org/x/sys v0.0.0-20200122134326-e047566fdf82/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
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/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.5 h1:ymVxjfMaHvXD8RqPRmzHHsB3VvucivSkIAvJFDI5O3c=
gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

335
vendor/github.com/armon/go-metrics/inmem.go generated vendored Normal file
View File

@ -0,0 +1,335 @@
package metrics
import (
"bytes"
"fmt"
"math"
"net/url"
"strings"
"sync"
"time"
)
var spaceReplacer = strings.NewReplacer(" ", "_")
// InmemSink provides a MetricSink that does in-memory aggregation
// without sending metrics over a network. It can be embedded within
// an application to provide profiling information.
type InmemSink struct {
// How long is each aggregation interval
interval time.Duration
// Retain controls how many metrics interval we keep
retain time.Duration
// maxIntervals is the maximum length of intervals.
// It is retain / interval.
maxIntervals int
// intervals is a slice of the retained intervals
intervals []*IntervalMetrics
intervalLock sync.RWMutex
rateDenom float64
}
// IntervalMetrics stores the aggregated metrics
// for a specific interval
type IntervalMetrics struct {
sync.RWMutex
// The start time of the interval
Interval time.Time
// Gauges maps the key to the last set value
Gauges map[string]GaugeValue
// Points maps the string to the list of emitted values
// from EmitKey
Points map[string][]float32
// Counters maps the string key to a sum of the counter
// values
Counters map[string]SampledValue
// Samples maps the key to an AggregateSample,
// which has the rolled up view of a sample
Samples map[string]SampledValue
}
// NewIntervalMetrics creates a new IntervalMetrics for a given interval
func NewIntervalMetrics(intv time.Time) *IntervalMetrics {
return &IntervalMetrics{
Interval: intv,
Gauges: make(map[string]GaugeValue),
Points: make(map[string][]float32),
Counters: make(map[string]SampledValue),
Samples: make(map[string]SampledValue),
}
}
// AggregateSample is used to hold aggregate metrics
// about a sample
type AggregateSample struct {
Count int // The count of emitted pairs
Rate float64 // The values rate per time unit (usually 1 second)
Sum float64 // The sum of values
SumSq float64 `json:"-"` // The sum of squared values
Min float64 // Minimum value
Max float64 // Maximum value
LastUpdated time.Time `json:"-"` // When value was last updated
}
// Computes a Stddev of the values
func (a *AggregateSample) Stddev() float64 {
num := (float64(a.Count) * a.SumSq) - math.Pow(a.Sum, 2)
div := float64(a.Count * (a.Count - 1))
if div == 0 {
return 0
}
return math.Sqrt(num / div)
}
// Computes a mean of the values
func (a *AggregateSample) Mean() float64 {
if a.Count == 0 {
return 0
}
return a.Sum / float64(a.Count)
}
// Ingest is used to update a sample
func (a *AggregateSample) Ingest(v float64, rateDenom float64) {
a.Count++
a.Sum += v
a.SumSq += (v * v)
if v < a.Min || a.Count == 1 {
a.Min = v
}
if v > a.Max || a.Count == 1 {
a.Max = v
}
a.Rate = float64(a.Sum) / rateDenom
a.LastUpdated = time.Now()
}
func (a *AggregateSample) String() string {
if a.Count == 0 {
return "Count: 0"
} else if a.Stddev() == 0 {
return fmt.Sprintf("Count: %d Sum: %0.3f LastUpdated: %s", a.Count, a.Sum, a.LastUpdated)
} else {
return fmt.Sprintf("Count: %d Min: %0.3f Mean: %0.3f Max: %0.3f Stddev: %0.3f Sum: %0.3f LastUpdated: %s",
a.Count, a.Min, a.Mean(), a.Max, a.Stddev(), a.Sum, a.LastUpdated)
}
}
// NewInmemSinkFromURL creates an InmemSink from a URL. It is used
// (and tested) from NewMetricSinkFromURL.
func NewInmemSinkFromURL(u *url.URL) (MetricSink, error) {
params := u.Query()
interval, err := time.ParseDuration(params.Get("interval"))
if err != nil {
return nil, fmt.Errorf("Bad 'interval' param: %s", err)
}
retain, err := time.ParseDuration(params.Get("retain"))
if err != nil {
return nil, fmt.Errorf("Bad 'retain' param: %s", err)
}
return NewInmemSink(interval, retain), nil
}
// NewInmemSink is used to construct a new in-memory sink.
// Uses an aggregation interval and maximum retention period.
func NewInmemSink(interval, retain time.Duration) *InmemSink {
rateTimeUnit := time.Second
i := &InmemSink{
interval: interval,
retain: retain,
maxIntervals: int(retain / interval),
rateDenom: float64(interval.Nanoseconds()) / float64(rateTimeUnit.Nanoseconds()),
}
i.intervals = make([]*IntervalMetrics, 0, i.maxIntervals)
return i
}
func (i *InmemSink) SetGauge(key []string, val float32) {
i.SetGaugeWithLabels(key, val, nil)
}
func (i *InmemSink) SetGaugeWithLabels(key []string, val float32, labels []Label) {
k, name := i.flattenKeyLabels(key, labels)
intv := i.getInterval()
intv.Lock()
defer intv.Unlock()
intv.Gauges[k] = GaugeValue{Name: name, Value: val, Labels: labels}
}
func (i *InmemSink) EmitKey(key []string, val float32) {
k := i.flattenKey(key)
intv := i.getInterval()
intv.Lock()
defer intv.Unlock()
vals := intv.Points[k]
intv.Points[k] = append(vals, val)
}
func (i *InmemSink) IncrCounter(key []string, val float32) {
i.IncrCounterWithLabels(key, val, nil)
}
func (i *InmemSink) IncrCounterWithLabels(key []string, val float32, labels []Label) {
k, name := i.flattenKeyLabels(key, labels)
intv := i.getInterval()
intv.Lock()
defer intv.Unlock()
agg, ok := intv.Counters[k]
if !ok {
agg = SampledValue{
Name: name,
AggregateSample: &AggregateSample{},
Labels: labels,
}
intv.Counters[k] = agg
}
agg.Ingest(float64(val), i.rateDenom)
}
func (i *InmemSink) AddSample(key []string, val float32) {
i.AddSampleWithLabels(key, val, nil)
}
func (i *InmemSink) AddSampleWithLabels(key []string, val float32, labels []Label) {
k, name := i.flattenKeyLabels(key, labels)
intv := i.getInterval()
intv.Lock()
defer intv.Unlock()
agg, ok := intv.Samples[k]
if !ok {
agg = SampledValue{
Name: name,
AggregateSample: &AggregateSample{},
Labels: labels,
}
intv.Samples[k] = agg
}
agg.Ingest(float64(val), i.rateDenom)
}
// Data is used to retrieve all the aggregated metrics
// Intervals may be in use, and a read lock should be acquired
func (i *InmemSink) Data() []*IntervalMetrics {
// Get the current interval, forces creation
i.getInterval()
i.intervalLock.RLock()
defer i.intervalLock.RUnlock()
n := len(i.intervals)
intervals := make([]*IntervalMetrics, n)
copy(intervals[:n-1], i.intervals[:n-1])
current := i.intervals[n-1]
// make its own copy for current interval
intervals[n-1] = &IntervalMetrics{}
copyCurrent := intervals[n-1]
current.RLock()
*copyCurrent = *current
copyCurrent.Gauges = make(map[string]GaugeValue, len(current.Gauges))
for k, v := range current.Gauges {
copyCurrent.Gauges[k] = v
}
// saved values will be not change, just copy its link
copyCurrent.Points = make(map[string][]float32, len(current.Points))
for k, v := range current.Points {
copyCurrent.Points[k] = v
}
copyCurrent.Counters = make(map[string]SampledValue, len(current.Counters))
for k, v := range current.Counters {
copyCurrent.Counters[k] = v.deepCopy()
}
copyCurrent.Samples = make(map[string]SampledValue, len(current.Samples))
for k, v := range current.Samples {
copyCurrent.Samples[k] = v.deepCopy()
}
current.RUnlock()
return intervals
}
func (i *InmemSink) getExistingInterval(intv time.Time) *IntervalMetrics {
i.intervalLock.RLock()
defer i.intervalLock.RUnlock()
n := len(i.intervals)
if n > 0 && i.intervals[n-1].Interval == intv {
return i.intervals[n-1]
}
return nil
}
func (i *InmemSink) createInterval(intv time.Time) *IntervalMetrics {
i.intervalLock.Lock()
defer i.intervalLock.Unlock()
// Check for an existing interval
n := len(i.intervals)
if n > 0 && i.intervals[n-1].Interval == intv {
return i.intervals[n-1]
}
// Add the current interval
current := NewIntervalMetrics(intv)
i.intervals = append(i.intervals, current)
n++
// Truncate the intervals if they are too long
if n >= i.maxIntervals {
copy(i.intervals[0:], i.intervals[n-i.maxIntervals:])
i.intervals = i.intervals[:i.maxIntervals]
}
return current
}
// getInterval returns the current interval to write to
func (i *InmemSink) getInterval() *IntervalMetrics {
intv := time.Now().Truncate(i.interval)
if m := i.getExistingInterval(intv); m != nil {
return m
}
return i.createInterval(intv)
}
// Flattens the key for formatting, removes spaces
func (i *InmemSink) flattenKey(parts []string) string {
buf := &bytes.Buffer{}
joined := strings.Join(parts, ".")
spaceReplacer.WriteString(buf, joined)
return buf.String()
}
// Flattens the key for formatting along with its labels, removes spaces
func (i *InmemSink) flattenKeyLabels(parts []string, labels []Label) (string, string) {
key := i.flattenKey(parts)
buf := bytes.NewBufferString(key)
for _, label := range labels {
spaceReplacer.WriteString(buf, fmt.Sprintf(";%s=%s", label.Name, label.Value))
}
return buf.String(), key
}

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vendor/github.com/armon/go-metrics/inmem_endpoint.go generated vendored Normal file
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package metrics
import (
"fmt"
"net/http"
"sort"
"time"
)
// MetricsSummary holds a roll-up of metrics info for a given interval
type MetricsSummary struct {
Timestamp string
Gauges []GaugeValue
Points []PointValue
Counters []SampledValue
Samples []SampledValue
}
type GaugeValue struct {
Name string
Hash string `json:"-"`
Value float32
Labels []Label `json:"-"`
DisplayLabels map[string]string `json:"Labels"`
}
type PointValue struct {
Name string
Points []float32
}
type SampledValue struct {
Name string
Hash string `json:"-"`
*AggregateSample
Mean float64
Stddev float64
Labels []Label `json:"-"`
DisplayLabels map[string]string `json:"Labels"`
}
// deepCopy allocates a new instance of AggregateSample
func (source *SampledValue) deepCopy() SampledValue {
dest := *source
if source.AggregateSample != nil {
dest.AggregateSample = &AggregateSample{}
*dest.AggregateSample = *source.AggregateSample
}
return dest
}
// DisplayMetrics returns a summary of the metrics from the most recent finished interval.
func (i *InmemSink) DisplayMetrics(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
data := i.Data()
var interval *IntervalMetrics
n := len(data)
switch {
case n == 0:
return nil, fmt.Errorf("no metric intervals have been initialized yet")
case n == 1:
// Show the current interval if it's all we have
interval = data[0]
default:
// Show the most recent finished interval if we have one
interval = data[n-2]
}
interval.RLock()
defer interval.RUnlock()
summary := MetricsSummary{
Timestamp: interval.Interval.Round(time.Second).UTC().String(),
Gauges: make([]GaugeValue, 0, len(interval.Gauges)),
Points: make([]PointValue, 0, len(interval.Points)),
}
// Format and sort the output of each metric type, so it gets displayed in a
// deterministic order.
for name, points := range interval.Points {
summary.Points = append(summary.Points, PointValue{name, points})
}
sort.Slice(summary.Points, func(i, j int) bool {
return summary.Points[i].Name < summary.Points[j].Name
})
for hash, value := range interval.Gauges {
value.Hash = hash
value.DisplayLabels = make(map[string]string)
for _, label := range value.Labels {
value.DisplayLabels[label.Name] = label.Value
}
value.Labels = nil
summary.Gauges = append(summary.Gauges, value)
}
sort.Slice(summary.Gauges, func(i, j int) bool {
return summary.Gauges[i].Hash < summary.Gauges[j].Hash
})
summary.Counters = formatSamples(interval.Counters)
summary.Samples = formatSamples(interval.Samples)
return summary, nil
}
func formatSamples(source map[string]SampledValue) []SampledValue {
output := make([]SampledValue, 0, len(source))
for hash, sample := range source {
displayLabels := make(map[string]string)
for _, label := range sample.Labels {
displayLabels[label.Name] = label.Value
}
output = append(output, SampledValue{
Name: sample.Name,
Hash: hash,
AggregateSample: sample.AggregateSample,
Mean: sample.AggregateSample.Mean(),
Stddev: sample.AggregateSample.Stddev(),
DisplayLabels: displayLabels,
})
}
sort.Slice(output, func(i, j int) bool {
return output[i].Hash < output[j].Hash
})
return output
}

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package metrics
import (
"bytes"
"fmt"
"io"
"os"
"os/signal"
"strings"
"sync"
"syscall"
)
// InmemSignal is used to listen for a given signal, and when received,
// to dump the current metrics from the InmemSink to an io.Writer
type InmemSignal struct {
signal syscall.Signal
inm *InmemSink
w io.Writer
sigCh chan os.Signal
stop bool
stopCh chan struct{}
stopLock sync.Mutex
}
// NewInmemSignal creates a new InmemSignal which listens for a given signal,
// and dumps the current metrics out to a writer
func NewInmemSignal(inmem *InmemSink, sig syscall.Signal, w io.Writer) *InmemSignal {
i := &InmemSignal{
signal: sig,
inm: inmem,
w: w,
sigCh: make(chan os.Signal, 1),
stopCh: make(chan struct{}),
}
signal.Notify(i.sigCh, sig)
go i.run()
return i
}
// DefaultInmemSignal returns a new InmemSignal that responds to SIGUSR1
// and writes output to stderr. Windows uses SIGBREAK
func DefaultInmemSignal(inmem *InmemSink) *InmemSignal {
return NewInmemSignal(inmem, DefaultSignal, os.Stderr)
}
// Stop is used to stop the InmemSignal from listening
func (i *InmemSignal) Stop() {
i.stopLock.Lock()
defer i.stopLock.Unlock()
if i.stop {
return
}
i.stop = true
close(i.stopCh)
signal.Stop(i.sigCh)
}
// run is a long running routine that handles signals
func (i *InmemSignal) run() {
for {
select {
case <-i.sigCh:
i.dumpStats()
case <-i.stopCh:
return
}
}
}
// dumpStats is used to dump the data to output writer
func (i *InmemSignal) dumpStats() {
buf := bytes.NewBuffer(nil)
data := i.inm.Data()
// Skip the last period which is still being aggregated
for j := 0; j < len(data)-1; j++ {
intv := data[j]
intv.RLock()
for _, val := range intv.Gauges {
name := i.flattenLabels(val.Name, val.Labels)
fmt.Fprintf(buf, "[%v][G] '%s': %0.3f\n", intv.Interval, name, val.Value)
}
for name, vals := range intv.Points {
for _, val := range vals {
fmt.Fprintf(buf, "[%v][P] '%s': %0.3f\n", intv.Interval, name, val)
}
}
for _, agg := range intv.Counters {
name := i.flattenLabels(agg.Name, agg.Labels)
fmt.Fprintf(buf, "[%v][C] '%s': %s\n", intv.Interval, name, agg.AggregateSample)
}
for _, agg := range intv.Samples {
name := i.flattenLabels(agg.Name, agg.Labels)
fmt.Fprintf(buf, "[%v][S] '%s': %s\n", intv.Interval, name, agg.AggregateSample)
}
intv.RUnlock()
}
// Write out the bytes
i.w.Write(buf.Bytes())
}
// Flattens the key for formatting along with its labels, removes spaces
func (i *InmemSignal) flattenLabels(name string, labels []Label) string {
buf := bytes.NewBufferString(name)
replacer := strings.NewReplacer(" ", "_", ":", "_")
for _, label := range labels {
replacer.WriteString(buf, ".")
replacer.WriteString(buf, label.Value)
}
return buf.String()
}

293
vendor/github.com/armon/go-metrics/metrics.go generated vendored Normal file
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package metrics
import (
"runtime"
"strings"
"time"
"github.com/hashicorp/go-immutable-radix"
)
type Label struct {
Name string
Value string
}
func (m *Metrics) SetGauge(key []string, val float32) {
m.SetGaugeWithLabels(key, val, nil)
}
func (m *Metrics) SetGaugeWithLabels(key []string, val float32, labels []Label) {
if m.HostName != "" {
if m.EnableHostnameLabel {
labels = append(labels, Label{"host", m.HostName})
} else if m.EnableHostname {
key = insert(0, m.HostName, key)
}
}
if m.EnableTypePrefix {
key = insert(0, "gauge", key)
}
if m.ServiceName != "" {
if m.EnableServiceLabel {
labels = append(labels, Label{"service", m.ServiceName})
} else {
key = insert(0, m.ServiceName, key)
}
}
allowed, labelsFiltered := m.allowMetric(key, labels)
if !allowed {
return
}
m.sink.SetGaugeWithLabels(key, val, labelsFiltered)
}
func (m *Metrics) EmitKey(key []string, val float32) {
if m.EnableTypePrefix {
key = insert(0, "kv", key)
}
if m.ServiceName != "" {
key = insert(0, m.ServiceName, key)
}
allowed, _ := m.allowMetric(key, nil)
if !allowed {
return
}
m.sink.EmitKey(key, val)
}
func (m *Metrics) IncrCounter(key []string, val float32) {
m.IncrCounterWithLabels(key, val, nil)
}
func (m *Metrics) IncrCounterWithLabels(key []string, val float32, labels []Label) {
if m.HostName != "" && m.EnableHostnameLabel {
labels = append(labels, Label{"host", m.HostName})
}
if m.EnableTypePrefix {
key = insert(0, "counter", key)
}
if m.ServiceName != "" {
if m.EnableServiceLabel {
labels = append(labels, Label{"service", m.ServiceName})
} else {
key = insert(0, m.ServiceName, key)
}
}
allowed, labelsFiltered := m.allowMetric(key, labels)
if !allowed {
return
}
m.sink.IncrCounterWithLabels(key, val, labelsFiltered)
}
func (m *Metrics) AddSample(key []string, val float32) {
m.AddSampleWithLabels(key, val, nil)
}
func (m *Metrics) AddSampleWithLabels(key []string, val float32, labels []Label) {
if m.HostName != "" && m.EnableHostnameLabel {
labels = append(labels, Label{"host", m.HostName})
}
if m.EnableTypePrefix {
key = insert(0, "sample", key)
}
if m.ServiceName != "" {
if m.EnableServiceLabel {
labels = append(labels, Label{"service", m.ServiceName})
} else {
key = insert(0, m.ServiceName, key)
}
}
allowed, labelsFiltered := m.allowMetric(key, labels)
if !allowed {
return
}
m.sink.AddSampleWithLabels(key, val, labelsFiltered)
}
func (m *Metrics) MeasureSince(key []string, start time.Time) {
m.MeasureSinceWithLabels(key, start, nil)
}
func (m *Metrics) MeasureSinceWithLabels(key []string, start time.Time, labels []Label) {
if m.HostName != "" && m.EnableHostnameLabel {
labels = append(labels, Label{"host", m.HostName})
}
if m.EnableTypePrefix {
key = insert(0, "timer", key)
}
if m.ServiceName != "" {
if m.EnableServiceLabel {
labels = append(labels, Label{"service", m.ServiceName})
} else {
key = insert(0, m.ServiceName, key)
}
}
allowed, labelsFiltered := m.allowMetric(key, labels)
if !allowed {
return
}
now := time.Now()
elapsed := now.Sub(start)
msec := float32(elapsed.Nanoseconds()) / float32(m.TimerGranularity)
m.sink.AddSampleWithLabels(key, msec, labelsFiltered)
}
// UpdateFilter overwrites the existing filter with the given rules.
func (m *Metrics) UpdateFilter(allow, block []string) {
m.UpdateFilterAndLabels(allow, block, m.AllowedLabels, m.BlockedLabels)
}
// UpdateFilterAndLabels overwrites the existing filter with the given rules.
func (m *Metrics) UpdateFilterAndLabels(allow, block, allowedLabels, blockedLabels []string) {
m.filterLock.Lock()
defer m.filterLock.Unlock()
m.AllowedPrefixes = allow
m.BlockedPrefixes = block
if allowedLabels == nil {
// Having a white list means we take only elements from it
m.allowedLabels = nil
} else {
m.allowedLabels = make(map[string]bool)
for _, v := range allowedLabels {
m.allowedLabels[v] = true
}
}
m.blockedLabels = make(map[string]bool)
for _, v := range blockedLabels {
m.blockedLabels[v] = true
}
m.AllowedLabels = allowedLabels
m.BlockedLabels = blockedLabels
m.filter = iradix.New()
for _, prefix := range m.AllowedPrefixes {
m.filter, _, _ = m.filter.Insert([]byte(prefix), true)
}
for _, prefix := range m.BlockedPrefixes {
m.filter, _, _ = m.filter.Insert([]byte(prefix), false)
}
}
// labelIsAllowed return true if a should be included in metric
// the caller should lock m.filterLock while calling this method
func (m *Metrics) labelIsAllowed(label *Label) bool {
labelName := (*label).Name
if m.blockedLabels != nil {
_, ok := m.blockedLabels[labelName]
if ok {
// If present, let's remove this label
return false
}
}
if m.allowedLabels != nil {
_, ok := m.allowedLabels[labelName]
return ok
}
// Allow by default
return true
}
// filterLabels return only allowed labels
// the caller should lock m.filterLock while calling this method
func (m *Metrics) filterLabels(labels []Label) []Label {
if labels == nil {
return nil
}
toReturn := []Label{}
for _, label := range labels {
if m.labelIsAllowed(&label) {
toReturn = append(toReturn, label)
}
}
return toReturn
}
// Returns whether the metric should be allowed based on configured prefix filters
// Also return the applicable labels
func (m *Metrics) allowMetric(key []string, labels []Label) (bool, []Label) {
m.filterLock.RLock()
defer m.filterLock.RUnlock()
if m.filter == nil || m.filter.Len() == 0 {
return m.Config.FilterDefault, m.filterLabels(labels)
}
_, allowed, ok := m.filter.Root().LongestPrefix([]byte(strings.Join(key, ".")))
if !ok {
return m.Config.FilterDefault, m.filterLabels(labels)
}
return allowed.(bool), m.filterLabels(labels)
}
// Periodically collects runtime stats to publish
func (m *Metrics) collectStats() {
for {
time.Sleep(m.ProfileInterval)
m.emitRuntimeStats()
}
}
// Emits various runtime statsitics
func (m *Metrics) emitRuntimeStats() {
// Export number of Goroutines
numRoutines := runtime.NumGoroutine()
m.SetGauge([]string{"runtime", "num_goroutines"}, float32(numRoutines))
// Export memory stats
var stats runtime.MemStats
runtime.ReadMemStats(&stats)
m.SetGauge([]string{"runtime", "alloc_bytes"}, float32(stats.Alloc))
m.SetGauge([]string{"runtime", "sys_bytes"}, float32(stats.Sys))
m.SetGauge([]string{"runtime", "malloc_count"}, float32(stats.Mallocs))
m.SetGauge([]string{"runtime", "free_count"}, float32(stats.Frees))
m.SetGauge([]string{"runtime", "heap_objects"}, float32(stats.HeapObjects))
m.SetGauge([]string{"runtime", "total_gc_pause_ns"}, float32(stats.PauseTotalNs))
m.SetGauge([]string{"runtime", "total_gc_runs"}, float32(stats.NumGC))
// Export info about the last few GC runs
num := stats.NumGC
// Handle wrap around
if num < m.lastNumGC {
m.lastNumGC = 0
}
// Ensure we don't scan more than 256
if num-m.lastNumGC >= 256 {
m.lastNumGC = num - 255
}
for i := m.lastNumGC; i < num; i++ {
pause := stats.PauseNs[i%256]
m.AddSample([]string{"runtime", "gc_pause_ns"}, float32(pause))
}
m.lastNumGC = num
}
// Creates a new slice with the provided string value as the first element
// and the provided slice values as the remaining values.
// Ordering of the values in the provided input slice is kept in tact in the output slice.
func insert(i int, v string, s []string) []string {
// Allocate new slice to avoid modifying the input slice
newS := make([]string, len(s)+1)
// Copy s[0, i-1] into newS
for j := 0; j < i; j++ {
newS[j] = s[j]
}
// Insert provided element at index i
newS[i] = v
// Copy s[i, len(s)-1] into newS starting at newS[i+1]
for j := i; j < len(s); j++ {
newS[j+1] = s[j]
}
return newS
}

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vendor/github.com/armon/go-metrics/sink.go generated vendored Normal file
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package metrics
import (
"fmt"
"net/url"
)
// The MetricSink interface is used to transmit metrics information
// to an external system
type MetricSink interface {
// A Gauge should retain the last value it is set to
SetGauge(key []string, val float32)
SetGaugeWithLabels(key []string, val float32, labels []Label)
// Should emit a Key/Value pair for each call
EmitKey(key []string, val float32)
// Counters should accumulate values
IncrCounter(key []string, val float32)
IncrCounterWithLabels(key []string, val float32, labels []Label)
// Samples are for timing information, where quantiles are used
AddSample(key []string, val float32)
AddSampleWithLabels(key []string, val float32, labels []Label)
}
// BlackholeSink is used to just blackhole messages
type BlackholeSink struct{}
func (*BlackholeSink) SetGauge(key []string, val float32) {}
func (*BlackholeSink) SetGaugeWithLabels(key []string, val float32, labels []Label) {}
func (*BlackholeSink) EmitKey(key []string, val float32) {}
func (*BlackholeSink) IncrCounter(key []string, val float32) {}
func (*BlackholeSink) IncrCounterWithLabels(key []string, val float32, labels []Label) {}
func (*BlackholeSink) AddSample(key []string, val float32) {}
func (*BlackholeSink) AddSampleWithLabels(key []string, val float32, labels []Label) {}
// FanoutSink is used to sink to fanout values to multiple sinks
type FanoutSink []MetricSink
func (fh FanoutSink) SetGauge(key []string, val float32) {
fh.SetGaugeWithLabels(key, val, nil)
}
func (fh FanoutSink) SetGaugeWithLabels(key []string, val float32, labels []Label) {
for _, s := range fh {
s.SetGaugeWithLabels(key, val, labels)
}
}
func (fh FanoutSink) EmitKey(key []string, val float32) {
for _, s := range fh {
s.EmitKey(key, val)
}
}
func (fh FanoutSink) IncrCounter(key []string, val float32) {
fh.IncrCounterWithLabels(key, val, nil)
}
func (fh FanoutSink) IncrCounterWithLabels(key []string, val float32, labels []Label) {
for _, s := range fh {
s.IncrCounterWithLabels(key, val, labels)
}
}
func (fh FanoutSink) AddSample(key []string, val float32) {
fh.AddSampleWithLabels(key, val, nil)
}
func (fh FanoutSink) AddSampleWithLabels(key []string, val float32, labels []Label) {
for _, s := range fh {
s.AddSampleWithLabels(key, val, labels)
}
}
// sinkURLFactoryFunc is an generic interface around the *SinkFromURL() function provided
// by each sink type
type sinkURLFactoryFunc func(*url.URL) (MetricSink, error)
// sinkRegistry supports the generic NewMetricSink function by mapping URL
// schemes to metric sink factory functions
var sinkRegistry = map[string]sinkURLFactoryFunc{
"statsd": NewStatsdSinkFromURL,
"statsite": NewStatsiteSinkFromURL,
"inmem": NewInmemSinkFromURL,
}
// NewMetricSinkFromURL allows a generic URL input to configure any of the
// supported sinks. The scheme of the URL identifies the type of the sink, the
// and query parameters are used to set options.
//
// "statsd://" - Initializes a StatsdSink. The host and port are passed through
// as the "addr" of the sink
//
// "statsite://" - Initializes a StatsiteSink. The host and port become the
// "addr" of the sink
//
// "inmem://" - Initializes an InmemSink. The host and port are ignored. The
// "interval" and "duration" query parameters must be specified with valid
// durations, see NewInmemSink for details.
func NewMetricSinkFromURL(urlStr string) (MetricSink, error) {
u, err := url.Parse(urlStr)
if err != nil {
return nil, err
}
sinkURLFactoryFunc := sinkRegistry[u.Scheme]
if sinkURLFactoryFunc == nil {
return nil, fmt.Errorf(
"cannot create metric sink, unrecognized sink name: %q", u.Scheme)
}
return sinkURLFactoryFunc(u)
}

141
vendor/github.com/armon/go-metrics/start.go generated vendored Normal file
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package metrics
import (
"os"
"sync"
"sync/atomic"
"time"
"github.com/hashicorp/go-immutable-radix"
)
// Config is used to configure metrics settings
type Config struct {
ServiceName string // Prefixed with keys to separate services
HostName string // Hostname to use. If not provided and EnableHostname, it will be os.Hostname
EnableHostname bool // Enable prefixing gauge values with hostname
EnableHostnameLabel bool // Enable adding hostname to labels
EnableServiceLabel bool // Enable adding service to labels
EnableRuntimeMetrics bool // Enables profiling of runtime metrics (GC, Goroutines, Memory)
EnableTypePrefix bool // Prefixes key with a type ("counter", "gauge", "timer")
TimerGranularity time.Duration // Granularity of timers.
ProfileInterval time.Duration // Interval to profile runtime metrics
AllowedPrefixes []string // A list of metric prefixes to allow, with '.' as the separator
BlockedPrefixes []string // A list of metric prefixes to block, with '.' as the separator
AllowedLabels []string // A list of metric labels to allow, with '.' as the separator
BlockedLabels []string // A list of metric labels to block, with '.' as the separator
FilterDefault bool // Whether to allow metrics by default
}
// Metrics represents an instance of a metrics sink that can
// be used to emit
type Metrics struct {
Config
lastNumGC uint32
sink MetricSink
filter *iradix.Tree
allowedLabels map[string]bool
blockedLabels map[string]bool
filterLock sync.RWMutex // Lock filters and allowedLabels/blockedLabels access
}
// Shared global metrics instance
var globalMetrics atomic.Value // *Metrics
func init() {
// Initialize to a blackhole sink to avoid errors
globalMetrics.Store(&Metrics{sink: &BlackholeSink{}})
}
// DefaultConfig provides a sane default configuration
func DefaultConfig(serviceName string) *Config {
c := &Config{
ServiceName: serviceName, // Use client provided service
HostName: "",
EnableHostname: true, // Enable hostname prefix
EnableRuntimeMetrics: true, // Enable runtime profiling
EnableTypePrefix: false, // Disable type prefix
TimerGranularity: time.Millisecond, // Timers are in milliseconds
ProfileInterval: time.Second, // Poll runtime every second
FilterDefault: true, // Don't filter metrics by default
}
// Try to get the hostname
name, _ := os.Hostname()
c.HostName = name
return c
}
// New is used to create a new instance of Metrics
func New(conf *Config, sink MetricSink) (*Metrics, error) {
met := &Metrics{}
met.Config = *conf
met.sink = sink
met.UpdateFilterAndLabels(conf.AllowedPrefixes, conf.BlockedPrefixes, conf.AllowedLabels, conf.BlockedLabels)
// Start the runtime collector
if conf.EnableRuntimeMetrics {
go met.collectStats()
}
return met, nil
}
// NewGlobal is the same as New, but it assigns the metrics object to be
// used globally as well as returning it.
func NewGlobal(conf *Config, sink MetricSink) (*Metrics, error) {
metrics, err := New(conf, sink)
if err == nil {
globalMetrics.Store(metrics)
}
return metrics, err
}
// Proxy all the methods to the globalMetrics instance
func SetGauge(key []string, val float32) {
globalMetrics.Load().(*Metrics).SetGauge(key, val)
}
func SetGaugeWithLabels(key []string, val float32, labels []Label) {
globalMetrics.Load().(*Metrics).SetGaugeWithLabels(key, val, labels)
}
func EmitKey(key []string, val float32) {
globalMetrics.Load().(*Metrics).EmitKey(key, val)
}
func IncrCounter(key []string, val float32) {
globalMetrics.Load().(*Metrics).IncrCounter(key, val)
}
func IncrCounterWithLabels(key []string, val float32, labels []Label) {
globalMetrics.Load().(*Metrics).IncrCounterWithLabels(key, val, labels)
}
func AddSample(key []string, val float32) {
globalMetrics.Load().(*Metrics).AddSample(key, val)
}
func AddSampleWithLabels(key []string, val float32, labels []Label) {
globalMetrics.Load().(*Metrics).AddSampleWithLabels(key, val, labels)
}
func MeasureSince(key []string, start time.Time) {
globalMetrics.Load().(*Metrics).MeasureSince(key, start)
}
func MeasureSinceWithLabels(key []string, start time.Time, labels []Label) {
globalMetrics.Load().(*Metrics).MeasureSinceWithLabels(key, start, labels)
}
func UpdateFilter(allow, block []string) {
globalMetrics.Load().(*Metrics).UpdateFilter(allow, block)
}
// UpdateFilterAndLabels set allow/block prefixes of metrics while allowedLabels
// and blockedLabels - when not nil - allow filtering of labels in order to
// block/allow globally labels (especially useful when having large number of
// values for a given label). See README.md for more information about usage.
func UpdateFilterAndLabels(allow, block, allowedLabels, blockedLabels []string) {
globalMetrics.Load().(*Metrics).UpdateFilterAndLabels(allow, block, allowedLabels, blockedLabels)
}

184
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package metrics
import (
"bytes"
"fmt"
"log"
"net"
"net/url"
"strings"
"time"
)
const (
// statsdMaxLen is the maximum size of a packet
// to send to statsd
statsdMaxLen = 1400
)
// StatsdSink provides a MetricSink that can be used
// with a statsite or statsd metrics server. It uses
// only UDP packets, while StatsiteSink uses TCP.
type StatsdSink struct {
addr string
metricQueue chan string
}
// NewStatsdSinkFromURL creates an StatsdSink from a URL. It is used
// (and tested) from NewMetricSinkFromURL.
func NewStatsdSinkFromURL(u *url.URL) (MetricSink, error) {
return NewStatsdSink(u.Host)
}
// NewStatsdSink is used to create a new StatsdSink
func NewStatsdSink(addr string) (*StatsdSink, error) {
s := &StatsdSink{
addr: addr,
metricQueue: make(chan string, 4096),
}
go s.flushMetrics()
return s, nil
}
// Close is used to stop flushing to statsd
func (s *StatsdSink) Shutdown() {
close(s.metricQueue)
}
func (s *StatsdSink) SetGauge(key []string, val float32) {
flatKey := s.flattenKey(key)
s.pushMetric(fmt.Sprintf("%s:%f|g\n", flatKey, val))
}
func (s *StatsdSink) SetGaugeWithLabels(key []string, val float32, labels []Label) {
flatKey := s.flattenKeyLabels(key, labels)
s.pushMetric(fmt.Sprintf("%s:%f|g\n", flatKey, val))
}
func (s *StatsdSink) EmitKey(key []string, val float32) {
flatKey := s.flattenKey(key)
s.pushMetric(fmt.Sprintf("%s:%f|kv\n", flatKey, val))
}
func (s *StatsdSink) IncrCounter(key []string, val float32) {
flatKey := s.flattenKey(key)
s.pushMetric(fmt.Sprintf("%s:%f|c\n", flatKey, val))
}
func (s *StatsdSink) IncrCounterWithLabels(key []string, val float32, labels []Label) {
flatKey := s.flattenKeyLabels(key, labels)
s.pushMetric(fmt.Sprintf("%s:%f|c\n", flatKey, val))
}
func (s *StatsdSink) AddSample(key []string, val float32) {
flatKey := s.flattenKey(key)
s.pushMetric(fmt.Sprintf("%s:%f|ms\n", flatKey, val))
}
func (s *StatsdSink) AddSampleWithLabels(key []string, val float32, labels []Label) {
flatKey := s.flattenKeyLabels(key, labels)
s.pushMetric(fmt.Sprintf("%s:%f|ms\n", flatKey, val))
}
// Flattens the key for formatting, removes spaces
func (s *StatsdSink) flattenKey(parts []string) string {
joined := strings.Join(parts, ".")
return strings.Map(func(r rune) rune {
switch r {
case ':':
fallthrough
case ' ':
return '_'
default:
return r
}
}, joined)
}
// Flattens the key along with labels for formatting, removes spaces
func (s *StatsdSink) flattenKeyLabels(parts []string, labels []Label) string {
for _, label := range labels {
parts = append(parts, label.Value)
}
return s.flattenKey(parts)
}
// Does a non-blocking push to the metrics queue
func (s *StatsdSink) pushMetric(m string) {
select {
case s.metricQueue <- m:
default:
}
}
// Flushes metrics
func (s *StatsdSink) flushMetrics() {
var sock net.Conn
var err error
var wait <-chan time.Time
ticker := time.NewTicker(flushInterval)
defer ticker.Stop()
CONNECT:
// Create a buffer
buf := bytes.NewBuffer(nil)
// Attempt to connect
sock, err = net.Dial("udp", s.addr)
if err != nil {
log.Printf("[ERR] Error connecting to statsd! Err: %s", err)
goto WAIT
}
for {
select {
case metric, ok := <-s.metricQueue:
// Get a metric from the queue
if !ok {
goto QUIT
}
// Check if this would overflow the packet size
if len(metric)+buf.Len() > statsdMaxLen {
_, err := sock.Write(buf.Bytes())
buf.Reset()
if err != nil {
log.Printf("[ERR] Error writing to statsd! Err: %s", err)
goto WAIT
}
}
// Append to the buffer
buf.WriteString(metric)
case <-ticker.C:
if buf.Len() == 0 {
continue
}
_, err := sock.Write(buf.Bytes())
buf.Reset()
if err != nil {
log.Printf("[ERR] Error flushing to statsd! Err: %s", err)
goto WAIT
}
}
}
WAIT:
// Wait for a while
wait = time.After(time.Duration(5) * time.Second)
for {
select {
// Dequeue the messages to avoid backlog
case _, ok := <-s.metricQueue:
if !ok {
goto QUIT
}
case <-wait:
goto CONNECT
}
}
QUIT:
s.metricQueue = nil
}

172
vendor/github.com/armon/go-metrics/statsite.go generated vendored Normal file
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package metrics
import (
"bufio"
"fmt"
"log"
"net"
"net/url"
"strings"
"time"
)
const (
// We force flush the statsite metrics after this period of
// inactivity. Prevents stats from getting stuck in a buffer
// forever.
flushInterval = 100 * time.Millisecond
)
// NewStatsiteSinkFromURL creates an StatsiteSink from a URL. It is used
// (and tested) from NewMetricSinkFromURL.
func NewStatsiteSinkFromURL(u *url.URL) (MetricSink, error) {
return NewStatsiteSink(u.Host)
}
// StatsiteSink provides a MetricSink that can be used with a
// statsite metrics server
type StatsiteSink struct {
addr string
metricQueue chan string
}
// NewStatsiteSink is used to create a new StatsiteSink
func NewStatsiteSink(addr string) (*StatsiteSink, error) {
s := &StatsiteSink{
addr: addr,
metricQueue: make(chan string, 4096),
}
go s.flushMetrics()
return s, nil
}
// Close is used to stop flushing to statsite
func (s *StatsiteSink) Shutdown() {
close(s.metricQueue)
}
func (s *StatsiteSink) SetGauge(key []string, val float32) {
flatKey := s.flattenKey(key)
s.pushMetric(fmt.Sprintf("%s:%f|g\n", flatKey, val))
}
func (s *StatsiteSink) SetGaugeWithLabels(key []string, val float32, labels []Label) {
flatKey := s.flattenKeyLabels(key, labels)
s.pushMetric(fmt.Sprintf("%s:%f|g\n", flatKey, val))
}
func (s *StatsiteSink) EmitKey(key []string, val float32) {
flatKey := s.flattenKey(key)
s.pushMetric(fmt.Sprintf("%s:%f|kv\n", flatKey, val))
}
func (s *StatsiteSink) IncrCounter(key []string, val float32) {
flatKey := s.flattenKey(key)
s.pushMetric(fmt.Sprintf("%s:%f|c\n", flatKey, val))
}
func (s *StatsiteSink) IncrCounterWithLabels(key []string, val float32, labels []Label) {
flatKey := s.flattenKeyLabels(key, labels)
s.pushMetric(fmt.Sprintf("%s:%f|c\n", flatKey, val))
}
func (s *StatsiteSink) AddSample(key []string, val float32) {
flatKey := s.flattenKey(key)
s.pushMetric(fmt.Sprintf("%s:%f|ms\n", flatKey, val))
}
func (s *StatsiteSink) AddSampleWithLabels(key []string, val float32, labels []Label) {
flatKey := s.flattenKeyLabels(key, labels)
s.pushMetric(fmt.Sprintf("%s:%f|ms\n", flatKey, val))
}
// Flattens the key for formatting, removes spaces
func (s *StatsiteSink) flattenKey(parts []string) string {
joined := strings.Join(parts, ".")
return strings.Map(func(r rune) rune {
switch r {
case ':':
fallthrough
case ' ':
return '_'
default:
return r
}
}, joined)
}
// Flattens the key along with labels for formatting, removes spaces
func (s *StatsiteSink) flattenKeyLabels(parts []string, labels []Label) string {
for _, label := range labels {
parts = append(parts, label.Value)
}
return s.flattenKey(parts)
}
// Does a non-blocking push to the metrics queue
func (s *StatsiteSink) pushMetric(m string) {
select {
case s.metricQueue <- m:
default:
}
}
// Flushes metrics
func (s *StatsiteSink) flushMetrics() {
var sock net.Conn
var err error
var wait <-chan time.Time
var buffered *bufio.Writer
ticker := time.NewTicker(flushInterval)
defer ticker.Stop()
CONNECT:
// Attempt to connect
sock, err = net.Dial("tcp", s.addr)
if err != nil {
log.Printf("[ERR] Error connecting to statsite! Err: %s", err)
goto WAIT
}
// Create a buffered writer
buffered = bufio.NewWriter(sock)
for {
select {
case metric, ok := <-s.metricQueue:
// Get a metric from the queue
if !ok {
goto QUIT
}
// Try to send to statsite
_, err := buffered.Write([]byte(metric))
if err != nil {
log.Printf("[ERR] Error writing to statsite! Err: %s", err)
goto WAIT
}
case <-ticker.C:
if err := buffered.Flush(); err != nil {
log.Printf("[ERR] Error flushing to statsite! Err: %s", err)
goto WAIT
}
}
}
WAIT:
// Wait for a while
wait = time.After(time.Duration(5) * time.Second)
for {
select {
// Dequeue the messages to avoid backlog
case _, ok := <-s.metricQueue:
if !ok {
goto QUIT
}
case <-wait:
goto CONNECT
}
}
QUIT:
s.metricQueue = nil
}

22
vendor/github.com/armon/go-radix/.gitignore generated vendored Normal file
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# Compiled Object files, Static and Dynamic libs (Shared Objects)
*.o
*.a
*.so
# Folders
_obj
_test
# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out
*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*
_testmain.go
*.exe

3
vendor/github.com/armon/go-radix/.travis.yml generated vendored Normal file
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language: go
go:
- tip

20
vendor/github.com/armon/go-radix/LICENSE generated vendored Normal file
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The MIT License (MIT)
Copyright (c) 2014 Armon Dadgar
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

38
vendor/github.com/armon/go-radix/README.md generated vendored Normal file
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go-radix [![Build Status](https://travis-ci.org/armon/go-radix.png)](https://travis-ci.org/armon/go-radix)
=========
Provides the `radix` package that implements a [radix tree](http://en.wikipedia.org/wiki/Radix_tree).
The package only provides a single `Tree` implementation, optimized for sparse nodes.
As a radix tree, it provides the following:
* O(k) operations. In many cases, this can be faster than a hash table since
the hash function is an O(k) operation, and hash tables have very poor cache locality.
* Minimum / Maximum value lookups
* Ordered iteration
For an immutable variant, see [go-immutable-radix](https://github.com/hashicorp/go-immutable-radix).
Documentation
=============
The full documentation is available on [Godoc](http://godoc.org/github.com/armon/go-radix).
Example
=======
Below is a simple example of usage
```go
// Create a tree
r := radix.New()
r.Insert("foo", 1)
r.Insert("bar", 2)
r.Insert("foobar", 2)
// Find the longest prefix match
m, _, _ := r.LongestPrefix("foozip")
if m != "foo" {
panic("should be foo")
}
```

1
vendor/github.com/armon/go-radix/go.mod generated vendored Normal file
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module github.com/armon/go-radix

540
vendor/github.com/armon/go-radix/radix.go generated vendored Normal file
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package radix
import (
"sort"
"strings"
)
// WalkFn is used when walking the tree. Takes a
// key and value, returning if iteration should
// be terminated.
type WalkFn func(s string, v interface{}) bool
// leafNode is used to represent a value
type leafNode struct {
key string
val interface{}
}
// edge is used to represent an edge node
type edge struct {
label byte
node *node
}
type node struct {
// leaf is used to store possible leaf
leaf *leafNode
// prefix is the common prefix we ignore
prefix string
// Edges should be stored in-order for iteration.
// We avoid a fully materialized slice to save memory,
// since in most cases we expect to be sparse
edges edges
}
func (n *node) isLeaf() bool {
return n.leaf != nil
}
func (n *node) addEdge(e edge) {
n.edges = append(n.edges, e)
n.edges.Sort()
}
func (n *node) updateEdge(label byte, node *node) {
num := len(n.edges)
idx := sort.Search(num, func(i int) bool {
return n.edges[i].label >= label
})
if idx < num && n.edges[idx].label == label {
n.edges[idx].node = node
return
}
panic("replacing missing edge")
}
func (n *node) getEdge(label byte) *node {
num := len(n.edges)
idx := sort.Search(num, func(i int) bool {
return n.edges[i].label >= label
})
if idx < num && n.edges[idx].label == label {
return n.edges[idx].node
}
return nil
}
func (n *node) delEdge(label byte) {
num := len(n.edges)
idx := sort.Search(num, func(i int) bool {
return n.edges[i].label >= label
})
if idx < num && n.edges[idx].label == label {
copy(n.edges[idx:], n.edges[idx+1:])
n.edges[len(n.edges)-1] = edge{}
n.edges = n.edges[:len(n.edges)-1]
}
}
type edges []edge
func (e edges) Len() int {
return len(e)
}
func (e edges) Less(i, j int) bool {
return e[i].label < e[j].label
}
func (e edges) Swap(i, j int) {
e[i], e[j] = e[j], e[i]
}
func (e edges) Sort() {
sort.Sort(e)
}
// Tree implements a radix tree. This can be treated as a
// Dictionary abstract data type. The main advantage over
// a standard hash map is prefix-based lookups and
// ordered iteration,
type Tree struct {
root *node
size int
}
// New returns an empty Tree
func New() *Tree {
return NewFromMap(nil)
}
// NewFromMap returns a new tree containing the keys
// from an existing map
func NewFromMap(m map[string]interface{}) *Tree {
t := &Tree{root: &node{}}
for k, v := range m {
t.Insert(k, v)
}
return t
}
// Len is used to return the number of elements in the tree
func (t *Tree) Len() int {
return t.size
}
// longestPrefix finds the length of the shared prefix
// of two strings
func longestPrefix(k1, k2 string) int {
max := len(k1)
if l := len(k2); l < max {
max = l
}
var i int
for i = 0; i < max; i++ {
if k1[i] != k2[i] {
break
}
}
return i
}
// Insert is used to add a newentry or update
// an existing entry. Returns if updated.
func (t *Tree) Insert(s string, v interface{}) (interface{}, bool) {
var parent *node
n := t.root
search := s
for {
// Handle key exhaution
if len(search) == 0 {
if n.isLeaf() {
old := n.leaf.val
n.leaf.val = v
return old, true
}
n.leaf = &leafNode{
key: s,
val: v,
}
t.size++
return nil, false
}
// Look for the edge
parent = n
n = n.getEdge(search[0])
// No edge, create one
if n == nil {
e := edge{
label: search[0],
node: &node{
leaf: &leafNode{
key: s,
val: v,
},
prefix: search,
},
}
parent.addEdge(e)
t.size++
return nil, false
}
// Determine longest prefix of the search key on match
commonPrefix := longestPrefix(search, n.prefix)
if commonPrefix == len(n.prefix) {
search = search[commonPrefix:]
continue
}
// Split the node
t.size++
child := &node{
prefix: search[:commonPrefix],
}
parent.updateEdge(search[0], child)
// Restore the existing node
child.addEdge(edge{
label: n.prefix[commonPrefix],
node: n,
})
n.prefix = n.prefix[commonPrefix:]
// Create a new leaf node
leaf := &leafNode{
key: s,
val: v,
}
// If the new key is a subset, add to to this node
search = search[commonPrefix:]
if len(search) == 0 {
child.leaf = leaf
return nil, false
}
// Create a new edge for the node
child.addEdge(edge{
label: search[0],
node: &node{
leaf: leaf,
prefix: search,
},
})
return nil, false
}
}
// Delete is used to delete a key, returning the previous
// value and if it was deleted
func (t *Tree) Delete(s string) (interface{}, bool) {
var parent *node
var label byte
n := t.root
search := s
for {
// Check for key exhaution
if len(search) == 0 {
if !n.isLeaf() {
break
}
goto DELETE
}
// Look for an edge
parent = n
label = search[0]
n = n.getEdge(label)
if n == nil {
break
}
// Consume the search prefix
if strings.HasPrefix(search, n.prefix) {
search = search[len(n.prefix):]
} else {
break
}
}
return nil, false
DELETE:
// Delete the leaf
leaf := n.leaf
n.leaf = nil
t.size--
// Check if we should delete this node from the parent
if parent != nil && len(n.edges) == 0 {
parent.delEdge(label)
}
// Check if we should merge this node
if n != t.root && len(n.edges) == 1 {
n.mergeChild()
}
// Check if we should merge the parent's other child
if parent != nil && parent != t.root && len(parent.edges) == 1 && !parent.isLeaf() {
parent.mergeChild()
}
return leaf.val, true
}
// DeletePrefix is used to delete the subtree under a prefix
// Returns how many nodes were deleted
// Use this to delete large subtrees efficiently
func (t *Tree) DeletePrefix(s string) int {
return t.deletePrefix(nil, t.root, s)
}
// delete does a recursive deletion
func (t *Tree) deletePrefix(parent, n *node, prefix string) int {
// Check for key exhaustion
if len(prefix) == 0 {
// Remove the leaf node
subTreeSize := 0
//recursively walk from all edges of the node to be deleted
recursiveWalk(n, func(s string, v interface{}) bool {
subTreeSize++
return false
})
if n.isLeaf() {
n.leaf = nil
}
n.edges = nil // deletes the entire subtree
// Check if we should merge the parent's other child
if parent != nil && parent != t.root && len(parent.edges) == 1 && !parent.isLeaf() {
parent.mergeChild()
}
t.size -= subTreeSize
return subTreeSize
}
// Look for an edge
label := prefix[0]
child := n.getEdge(label)
if child == nil || (!strings.HasPrefix(child.prefix, prefix) && !strings.HasPrefix(prefix, child.prefix)) {
return 0
}
// Consume the search prefix
if len(child.prefix) > len(prefix) {
prefix = prefix[len(prefix):]
} else {
prefix = prefix[len(child.prefix):]
}
return t.deletePrefix(n, child, prefix)
}
func (n *node) mergeChild() {
e := n.edges[0]
child := e.node
n.prefix = n.prefix + child.prefix
n.leaf = child.leaf
n.edges = child.edges
}
// Get is used to lookup a specific key, returning
// the value and if it was found
func (t *Tree) Get(s string) (interface{}, bool) {
n := t.root
search := s
for {
// Check for key exhaution
if len(search) == 0 {
if n.isLeaf() {
return n.leaf.val, true
}
break
}
// Look for an edge
n = n.getEdge(search[0])
if n == nil {
break
}
// Consume the search prefix
if strings.HasPrefix(search, n.prefix) {
search = search[len(n.prefix):]
} else {
break
}
}
return nil, false
}
// LongestPrefix is like Get, but instead of an
// exact match, it will return the longest prefix match.
func (t *Tree) LongestPrefix(s string) (string, interface{}, bool) {
var last *leafNode
n := t.root
search := s
for {
// Look for a leaf node
if n.isLeaf() {
last = n.leaf
}
// Check for key exhaution
if len(search) == 0 {
break
}
// Look for an edge
n = n.getEdge(search[0])
if n == nil {
break
}
// Consume the search prefix
if strings.HasPrefix(search, n.prefix) {
search = search[len(n.prefix):]
} else {
break
}
}
if last != nil {
return last.key, last.val, true
}
return "", nil, false
}
// Minimum is used to return the minimum value in the tree
func (t *Tree) Minimum() (string, interface{}, bool) {
n := t.root
for {
if n.isLeaf() {
return n.leaf.key, n.leaf.val, true
}
if len(n.edges) > 0 {
n = n.edges[0].node
} else {
break
}
}
return "", nil, false
}
// Maximum is used to return the maximum value in the tree
func (t *Tree) Maximum() (string, interface{}, bool) {
n := t.root
for {
if num := len(n.edges); num > 0 {
n = n.edges[num-1].node
continue
}
if n.isLeaf() {
return n.leaf.key, n.leaf.val, true
}
break
}
return "", nil, false
}
// Walk is used to walk the tree
func (t *Tree) Walk(fn WalkFn) {
recursiveWalk(t.root, fn)
}
// WalkPrefix is used to walk the tree under a prefix
func (t *Tree) WalkPrefix(prefix string, fn WalkFn) {
n := t.root
search := prefix
for {
// Check for key exhaution
if len(search) == 0 {
recursiveWalk(n, fn)
return
}
// Look for an edge
n = n.getEdge(search[0])
if n == nil {
break
}
// Consume the search prefix
if strings.HasPrefix(search, n.prefix) {
search = search[len(n.prefix):]
} else if strings.HasPrefix(n.prefix, search) {
// Child may be under our search prefix
recursiveWalk(n, fn)
return
} else {
break
}
}
}
// WalkPath is used to walk the tree, but only visiting nodes
// from the root down to a given leaf. Where WalkPrefix walks
// all the entries *under* the given prefix, this walks the
// entries *above* the given prefix.
func (t *Tree) WalkPath(path string, fn WalkFn) {
n := t.root
search := path
for {
// Visit the leaf values if any
if n.leaf != nil && fn(n.leaf.key, n.leaf.val) {
return
}
// Check for key exhaution
if len(search) == 0 {
return
}
// Look for an edge
n = n.getEdge(search[0])
if n == nil {
return
}
// Consume the search prefix
if strings.HasPrefix(search, n.prefix) {
search = search[len(n.prefix):]
} else {
break
}
}
}
// recursiveWalk is used to do a pre-order walk of a node
// recursively. Returns true if the walk should be aborted
func recursiveWalk(n *node, fn WalkFn) bool {
// Visit the leaf values if any
if n.leaf != nil && fn(n.leaf.key, n.leaf.val) {
return true
}
// Recurse on the children
for _, e := range n.edges {
if recursiveWalk(e.node, fn) {
return true
}
}
return false
}
// ToMap is used to walk the tree and convert it into a map
func (t *Tree) ToMap() map[string]interface{} {
out := make(map[string]interface{}, t.size)
t.Walk(func(k string, v interface{}) bool {
out[k] = v
return false
})
return out
}

9
vendor/github.com/hashicorp/errwrap/errwrap.go generated vendored
View File

@ -44,6 +44,8 @@ func Wrap(outer, inner error) error {
//
// format is the format of the error message. The string '{{err}}' will
// be replaced with the original error message.
//
// Deprecated: Use fmt.Errorf()
func Wrapf(format string, err error) error {
outerMsg := "<nil>"
if err != nil {
@ -148,6 +150,9 @@ func Walk(err error, cb WalkFunc) {
for _, err := range e.WrappedErrors() {
Walk(err, cb)
}
case interface{ Unwrap() error }:
cb(err)
Walk(e.Unwrap(), cb)
default:
cb(err)
}
@ -167,3 +172,7 @@ func (w *wrappedError) Error() string {
func (w *wrappedError) WrappedErrors() []error {
return []error{w.Outer, w.Inner}
}
func (w *wrappedError) Unwrap() error {
return w.Inner
}

3
vendor/github.com/hashicorp/go-hclog/intlogger.go generated vendored
View File

@ -295,6 +295,9 @@ func (l *intLogger) logPlain(t time.Time, name string, level Level, msg string,
continue FOR
case Format:
val = fmt.Sprintf(st[0].(string), st[1:]...)
case Quote:
raw = true
val = strconv.Quote(string(st))
default:
v := reflect.ValueOf(st)
if v.Kind() == reflect.Slice {

6
vendor/github.com/hashicorp/go-hclog/logger.go generated vendored
View File

@ -67,6 +67,12 @@ type Octal int
// text output. For example: L.Info("bits", Binary(17))
type Binary int
// A simple shortcut to format strings with Go quoting. Control and
// non-printable characters will be escaped with their backslash equivalents in
// output. Intended for untrusted or multiline strings which should be logged
// as concisely as possible.
type Quote string
// ColorOption expresses how the output should be colored, if at all.
type ColorOption uint8

2
vendor/github.com/hashicorp/go-hclog/stdlog.go generated vendored
View File

@ -64,7 +64,7 @@ func (s *stdlogAdapter) pickLevel(str string) (Level, string) {
case strings.HasPrefix(str, "[INFO]"):
return Info, strings.TrimSpace(str[6:])
case strings.HasPrefix(str, "[WARN]"):
return Warn, strings.TrimSpace(str[7:])
return Warn, strings.TrimSpace(str[6:])
case strings.HasPrefix(str, "[ERROR]"):
return Error, strings.TrimSpace(str[7:])
case strings.HasPrefix(str, "[ERR]"):

24
vendor/github.com/hashicorp/go-immutable-radix/.gitignore generated vendored Normal file
View File

@ -0,0 +1,24 @@
# Compiled Object files, Static and Dynamic libs (Shared Objects)
*.o
*.a
*.so
# Folders
_obj
_test
# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out
*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*
_testmain.go
*.exe
*.test
*.prof

3
vendor/github.com/hashicorp/go-immutable-radix/.travis.yml generated vendored Normal file
View File

@ -0,0 +1,3 @@
language: go
go:
- tip

9
vendor/github.com/hashicorp/go-immutable-radix/CHANGELOG.md generated vendored Normal file
View File

@ -0,0 +1,9 @@
# 1.1.0 (May 22nd, 2019)
FEATURES
* Add `SeekLowerBound` to allow for range scans. [[GH-24](https://github.com/hashicorp/go-immutable-radix/pull/24)]
# 1.0.0 (August 30th, 2018)
* go mod adopted

363
vendor/github.com/hashicorp/go-immutable-radix/LICENSE generated vendored Normal file
View File

@ -0,0 +1,363 @@
Mozilla Public License, version 2.0
1. Definitions
1.1. "Contributor"
means each individual or legal entity that creates, contributes to the
creation of, or owns Covered Software.
1.2. "Contributor Version"
means the combination of the Contributions of others (if any) used by a
Contributor and that particular Contributor's Contribution.
1.3. "Contribution"
means Covered Software of a particular Contributor.
1.4. "Covered Software"
means Source Code Form to which the initial Contributor has attached the
notice in Exhibit A, the Executable Form of such Source Code Form, and
Modifications of such Source Code Form, in each case including portions
thereof.
1.5. "Incompatible With Secondary Licenses"
means
a. that the initial Contributor has attached the notice described in
Exhibit B to the Covered Software; or
b. that the Covered Software was made available under the terms of
version 1.1 or earlier of the License, but not also under the terms of
a Secondary License.
1.6. "Executable Form"
means any form of the work other than Source Code Form.
1.7. "Larger Work"
means a work that combines Covered Software with other material, in a
separate file or files, that is not Covered Software.
1.8. "License"
means this document.
1.9. "Licensable"
means having the right to grant, to the maximum extent possible, whether
at the time of the initial grant or subsequently, any and all of the
rights conveyed by this License.
1.10. "Modifications"
means any of the following:
a. any file in Source Code Form that results from an addition to,
deletion from, or modification of the contents of Covered Software; or
b. any new file in Source Code Form that contains any Covered Software.
1.11. "Patent Claims" of a Contributor
means any patent claim(s), including without limitation, method,
process, and apparatus claims, in any patent Licensable by such
Contributor that would be infringed, but for the grant of the License,
by the making, using, selling, offering for sale, having made, import,
or transfer of either its Contributions or its Contributor Version.
1.12. "Secondary License"
means either the GNU General Public License, Version 2.0, the GNU Lesser
General Public License, Version 2.1, the GNU Affero General Public
License, Version 3.0, or any later versions of those licenses.
1.13. "Source Code Form"
means the form of the work preferred for making modifications.
1.14. "You" (or "Your")
means an individual or a legal entity exercising rights under this
License. For legal entities, "You" includes any entity that controls, is
controlled by, or is under common control with You. For purposes of this
definition, "control" means (a) the power, direct or indirect, to cause
the direction or management of such entity, whether by contract or
otherwise, or (b) ownership of more than fifty percent (50%) of the
outstanding shares or beneficial ownership of such entity.
2. License Grants and Conditions
2.1. Grants
Each Contributor hereby grants You a world-wide, royalty-free,
non-exclusive license:
a. under intellectual property rights (other than patent or trademark)
Licensable by such Contributor to use, reproduce, make available,
modify, display, perform, distribute, and otherwise exploit its
Contributions, either on an unmodified basis, with Modifications, or
as part of a Larger Work; and
b. under Patent Claims of such Contributor to make, use, sell, offer for
sale, have made, import, and otherwise transfer either its
Contributions or its Contributor Version.
2.2. Effective Date
The licenses granted in Section 2.1 with respect to any Contribution
become effective for each Contribution on the date the Contributor first
distributes such Contribution.
2.3. Limitations on Grant Scope
The licenses granted in this Section 2 are the only rights granted under
this License. No additional rights or licenses will be implied from the
distribution or licensing of Covered Software under this License.
Notwithstanding Section 2.1(b) above, no patent license is granted by a
Contributor:
a. for any code that a Contributor has removed from Covered Software; or
b. for infringements caused by: (i) Your and any other third party's
modifications of Covered Software, or (ii) the combination of its
Contributions with other software (except as part of its Contributor
Version); or
c. under Patent Claims infringed by Covered Software in the absence of
its Contributions.
This License does not grant any rights in the trademarks, service marks,
or logos of any Contributor (except as may be necessary to comply with
the notice requirements in Section 3.4).
2.4. Subsequent Licenses
No Contributor makes additional grants as a result of Your choice to
distribute the Covered Software under a subsequent version of this
License (see Section 10.2) or under the terms of a Secondary License (if
permitted under the terms of Section 3.3).
2.5. Representation
Each Contributor represents that the Contributor believes its
Contributions are its original creation(s) or it has sufficient rights to
grant the rights to its Contributions conveyed by this License.
2.6. Fair Use
This License is not intended to limit any rights You have under
applicable copyright doctrines of fair use, fair dealing, or other
equivalents.
2.7. Conditions
Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
Section 2.1.
3. Responsibilities
3.1. Distribution of Source Form
All distribution of Covered Software in Source Code Form, including any
Modifications that You create or to which You contribute, must be under
the terms of this License. You must inform recipients that the Source
Code Form of the Covered Software is governed by the terms of this
License, and how they can obtain a copy of this License. You may not
attempt to alter or restrict the recipients' rights in the Source Code
Form.
3.2. Distribution of Executable Form
If You distribute Covered Software in Executable Form then:
a. such Covered Software must also be made available in Source Code Form,
as described in Section 3.1, and You must inform recipients of the
Executable Form how they can obtain a copy of such Source Code Form by
reasonable means in a timely manner, at a charge no more than the cost
of distribution to the recipient; and
b. You may distribute such Executable Form under the terms of this
License, or sublicense it under different terms, provided that the
license for the Executable Form does not attempt to limit or alter the
recipients' rights in the Source Code Form under this License.
3.3. Distribution of a Larger Work
You may create and distribute a Larger Work under terms of Your choice,
provided that You also comply with the requirements of this License for
the Covered Software. If the Larger Work is a combination of Covered
Software with a work governed by one or more Secondary Licenses, and the
Covered Software is not Incompatible With Secondary Licenses, this
License permits You to additionally distribute such Covered Software
under the terms of such Secondary License(s), so that the recipient of
the Larger Work may, at their option, further distribute the Covered
Software under the terms of either this License or such Secondary
License(s).
3.4. Notices
You may not remove or alter the substance of any license notices
(including copyright notices, patent notices, disclaimers of warranty, or
limitations of liability) contained within the Source Code Form of the
Covered Software, except that You may alter any license notices to the
extent required to remedy known factual inaccuracies.
3.5. Application of Additional Terms
You may choose to offer, and to charge a fee for, warranty, support,
indemnity or liability obligations to one or more recipients of Covered
Software. However, You may do so only on Your own behalf, and not on
behalf of any Contributor. You must make it absolutely clear that any
such warranty, support, indemnity, or liability obligation is offered by
You alone, and You hereby agree to indemnify every Contributor for any
liability incurred by such Contributor as a result of warranty, support,
indemnity or liability terms You offer. You may include additional
disclaimers of warranty and limitations of liability specific to any
jurisdiction.
4. Inability to Comply Due to Statute or Regulation
If it is impossible for You to comply with any of the terms of this License
with respect to some or all of the Covered Software due to statute,
judicial order, or regulation then You must: (a) comply with the terms of
this License to the maximum extent possible; and (b) describe the
limitations and the code they affect. Such description must be placed in a
text file included with all distributions of the Covered Software under
this License. Except to the extent prohibited by statute or regulation,
such description must be sufficiently detailed for a recipient of ordinary
skill to be able to understand it.
5. Termination
5.1. The rights granted under this License will terminate automatically if You
fail to comply with any of its terms. However, if You become compliant,
then the rights granted under this License from a particular Contributor
are reinstated (a) provisionally, unless and until such Contributor
explicitly and finally terminates Your grants, and (b) on an ongoing
basis, if such Contributor fails to notify You of the non-compliance by
some reasonable means prior to 60 days after You have come back into
compliance. Moreover, Your grants from a particular Contributor are
reinstated on an ongoing basis if such Contributor notifies You of the
non-compliance by some reasonable means, this is the first time You have
received notice of non-compliance with this License from such
Contributor, and You become compliant prior to 30 days after Your receipt
of the notice.
5.2. If You initiate litigation against any entity by asserting a patent
infringement claim (excluding declaratory judgment actions,
counter-claims, and cross-claims) alleging that a Contributor Version
directly or indirectly infringes any patent, then the rights granted to
You by any and all Contributors for the Covered Software under Section
2.1 of this License shall terminate.
5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
license agreements (excluding distributors and resellers) which have been
validly granted by You or Your distributors under this License prior to
termination shall survive termination.
6. Disclaimer of Warranty
Covered Software is provided under this License on an "as is" basis,
without warranty of any kind, either expressed, implied, or statutory,
including, without limitation, warranties that the Covered Software is free
of defects, merchantable, fit for a particular purpose or non-infringing.
The entire risk as to the quality and performance of the Covered Software
is with You. Should any Covered Software prove defective in any respect,
You (not any Contributor) assume the cost of any necessary servicing,
repair, or correction. This disclaimer of warranty constitutes an essential
part of this License. No use of any Covered Software is authorized under
this License except under this disclaimer.
7. Limitation of Liability
Under no circumstances and under no legal theory, whether tort (including
negligence), contract, or otherwise, shall any Contributor, or anyone who
distributes Covered Software as permitted above, be liable to You for any
direct, indirect, special, incidental, or consequential damages of any
character including, without limitation, damages for lost profits, loss of
goodwill, work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses, even if such party shall have been
informed of the possibility of such damages. This limitation of liability
shall not apply to liability for death or personal injury resulting from
such party's negligence to the extent applicable law prohibits such
limitation. Some jurisdictions do not allow the exclusion or limitation of
incidental or consequential damages, so this exclusion and limitation may
not apply to You.
8. Litigation
Any litigation relating to this License may be brought only in the courts
of a jurisdiction where the defendant maintains its principal place of
business and such litigation shall be governed by laws of that
jurisdiction, without reference to its conflict-of-law provisions. Nothing
in this Section shall prevent a party's ability to bring cross-claims or
counter-claims.
9. Miscellaneous
This License represents the complete agreement concerning the subject
matter hereof. If any provision of this License is held to be
unenforceable, such provision shall be reformed only to the extent
necessary to make it enforceable. Any law or regulation which provides that
the language of a contract shall be construed against the drafter shall not
be used to construe this License against a Contributor.
10. Versions of the License
10.1. New Versions
Mozilla Foundation is the license steward. Except as provided in Section
10.3, no one other than the license steward has the right to modify or
publish new versions of this License. Each version will be given a
distinguishing version number.
10.2. Effect of New Versions
You may distribute the Covered Software under the terms of the version
of the License under which You originally received the Covered Software,
or under the terms of any subsequent version published by the license
steward.
10.3. Modified Versions
If you create software not governed by this License, and you want to
create a new license for such software, you may create and use a
modified version of this License if you rename the license and remove
any references to the name of the license steward (except to note that
such modified license differs from this License).
10.4. Distributing Source Code Form that is Incompatible With Secondary
Licenses If You choose to distribute Source Code Form that is
Incompatible With Secondary Licenses under the terms of this version of
the License, the notice described in Exhibit B of this License must be
attached.
Exhibit A - Source Code Form License Notice
This Source Code Form is subject to the
terms of the Mozilla Public License, v.
2.0. If a copy of the MPL was not
distributed with this file, You can
obtain one at
http://mozilla.org/MPL/2.0/.
If it is not possible or desirable to put the notice in a particular file,
then You may include the notice in a location (such as a LICENSE file in a
relevant directory) where a recipient would be likely to look for such a
notice.
You may add additional accurate notices of copyright ownership.
Exhibit B - "Incompatible With Secondary Licenses" Notice
This Source Code Form is "Incompatible
With Secondary Licenses", as defined by
the Mozilla Public License, v. 2.0.

66
vendor/github.com/hashicorp/go-immutable-radix/README.md generated vendored Normal file
View File

@ -0,0 +1,66 @@
go-immutable-radix [![Build Status](https://travis-ci.org/hashicorp/go-immutable-radix.png)](https://travis-ci.org/hashicorp/go-immutable-radix)
=========
Provides the `iradix` package that implements an immutable [radix tree](http://en.wikipedia.org/wiki/Radix_tree).
The package only provides a single `Tree` implementation, optimized for sparse nodes.
As a radix tree, it provides the following:
* O(k) operations. In many cases, this can be faster than a hash table since
the hash function is an O(k) operation, and hash tables have very poor cache locality.
* Minimum / Maximum value lookups
* Ordered iteration
A tree supports using a transaction to batch multiple updates (insert, delete)
in a more efficient manner than performing each operation one at a time.
For a mutable variant, see [go-radix](https://github.com/armon/go-radix).
Documentation
=============
The full documentation is available on [Godoc](http://godoc.org/github.com/hashicorp/go-immutable-radix).
Example
=======
Below is a simple example of usage
```go
// Create a tree
r := iradix.New()
r, _, _ = r.Insert([]byte("foo"), 1)
r, _, _ = r.Insert([]byte("bar"), 2)
r, _, _ = r.Insert([]byte("foobar"), 2)
// Find the longest prefix match
m, _, _ := r.Root().LongestPrefix([]byte("foozip"))
if string(m) != "foo" {
panic("should be foo")
}
```
Here is an example of performing a range scan of the keys.
```go
// Create a tree
r := iradix.New()
r, _, _ = r.Insert([]byte("001"), 1)
r, _, _ = r.Insert([]byte("002"), 2)
r, _, _ = r.Insert([]byte("005"), 5)
r, _, _ = r.Insert([]byte("010"), 10)
r, _, _ = r.Insert([]byte("100"), 10)
// Range scan over the keys that sort lexicographically between [003, 050)
it := r.Root().Iterator()
it.SeekLowerBound([]byte("003"))
for key, _, ok := it.Next(); ok; key, _, ok = it.Next() {
if key >= "050" {
break
}
fmt.Println(key)
}
// Output:
// 005
// 010
```

21
vendor/github.com/hashicorp/go-immutable-radix/edges.go generated vendored Normal file
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@ -0,0 +1,21 @@
package iradix
import "sort"
type edges []edge
func (e edges) Len() int {
return len(e)
}
func (e edges) Less(i, j int) bool {
return e[i].label < e[j].label
}
func (e edges) Swap(i, j int) {
e[i], e[j] = e[j], e[i]
}
func (e edges) Sort() {
sort.Sort(e)
}

6
vendor/github.com/hashicorp/go-immutable-radix/go.mod generated vendored Normal file
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@ -0,0 +1,6 @@
module github.com/hashicorp/go-immutable-radix
require (
github.com/hashicorp/go-uuid v1.0.0
github.com/hashicorp/golang-lru v0.5.0
)

4
vendor/github.com/hashicorp/go-immutable-radix/go.sum generated vendored Normal file
View File

@ -0,0 +1,4 @@
github.com/hashicorp/go-uuid v1.0.0 h1:RS8zrF7PhGwyNPOtxSClXXj9HA8feRnJzgnI1RJCSnM=
github.com/hashicorp/go-uuid v1.0.0/go.mod h1:6SBZvOh/SIDV7/2o3Jml5SYk/TvGqwFJ/bN7x4byOro=
github.com/hashicorp/golang-lru v0.5.0 h1:CL2msUPvZTLb5O648aiLNJw3hnBxN2+1Jq8rCOH9wdo=
github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=

662
vendor/github.com/hashicorp/go-immutable-radix/iradix.go generated vendored Normal file
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@ -0,0 +1,662 @@
package iradix
import (
"bytes"
"strings"
"github.com/hashicorp/golang-lru/simplelru"
)
const (
// defaultModifiedCache is the default size of the modified node
// cache used per transaction. This is used to cache the updates
// to the nodes near the root, while the leaves do not need to be
// cached. This is important for very large transactions to prevent
// the modified cache from growing to be enormous. This is also used
// to set the max size of the mutation notify maps since those should
// also be bounded in a similar way.
defaultModifiedCache = 8192
)
// Tree implements an immutable radix tree. This can be treated as a
// Dictionary abstract data type. The main advantage over a standard
// hash map is prefix-based lookups and ordered iteration. The immutability
// means that it is safe to concurrently read from a Tree without any
// coordination.
type Tree struct {
root *Node
size int
}
// New returns an empty Tree
func New() *Tree {
t := &Tree{
root: &Node{
mutateCh: make(chan struct{}),
},
}
return t
}
// Len is used to return the number of elements in the tree
func (t *Tree) Len() int {
return t.size
}
// Txn is a transaction on the tree. This transaction is applied
// atomically and returns a new tree when committed. A transaction
// is not thread safe, and should only be used by a single goroutine.
type Txn struct {
// root is the modified root for the transaction.
root *Node
// snap is a snapshot of the root node for use if we have to run the
// slow notify algorithm.
snap *Node
// size tracks the size of the tree as it is modified during the
// transaction.
size int
// writable is a cache of writable nodes that have been created during
// the course of the transaction. This allows us to re-use the same
// nodes for further writes and avoid unnecessary copies of nodes that
// have never been exposed outside the transaction. This will only hold
// up to defaultModifiedCache number of entries.
writable *simplelru.LRU
// trackChannels is used to hold channels that need to be notified to
// signal mutation of the tree. This will only hold up to
// defaultModifiedCache number of entries, after which we will set the
// trackOverflow flag, which will cause us to use a more expensive
// algorithm to perform the notifications. Mutation tracking is only
// performed if trackMutate is true.
trackChannels map[chan struct{}]struct{}
trackOverflow bool
trackMutate bool
}
// Txn starts a new transaction that can be used to mutate the tree
func (t *Tree) Txn() *Txn {
txn := &Txn{
root: t.root,
snap: t.root,
size: t.size,
}
return txn
}
// TrackMutate can be used to toggle if mutations are tracked. If this is enabled
// then notifications will be issued for affected internal nodes and leaves when
// the transaction is committed.
func (t *Txn) TrackMutate(track bool) {
t.trackMutate = track
}
// trackChannel safely attempts to track the given mutation channel, setting the
// overflow flag if we can no longer track any more. This limits the amount of
// state that will accumulate during a transaction and we have a slower algorithm
// to switch to if we overflow.
func (t *Txn) trackChannel(ch chan struct{}) {
// In overflow, make sure we don't store any more objects.
if t.trackOverflow {
return
}
// If this would overflow the state we reject it and set the flag (since
// we aren't tracking everything that's required any longer).
if len(t.trackChannels) >= defaultModifiedCache {
// Mark that we are in the overflow state
t.trackOverflow = true
// Clear the map so that the channels can be garbage collected. It is
// safe to do this since we have already overflowed and will be using
// the slow notify algorithm.
t.trackChannels = nil
return
}
// Create the map on the fly when we need it.
if t.trackChannels == nil {
t.trackChannels = make(map[chan struct{}]struct{})
}
// Otherwise we are good to track it.
t.trackChannels[ch] = struct{}{}
}
// writeNode returns a node to be modified, if the current node has already been
// modified during the course of the transaction, it is used in-place. Set
// forLeafUpdate to true if you are getting a write node to update the leaf,
// which will set leaf mutation tracking appropriately as well.
func (t *Txn) writeNode(n *Node, forLeafUpdate bool) *Node {
// Ensure the writable set exists.
if t.writable == nil {
lru, err := simplelru.NewLRU(defaultModifiedCache, nil)
if err != nil {
panic(err)
}
t.writable = lru
}
// If this node has already been modified, we can continue to use it
// during this transaction. We know that we don't need to track it for
// a node update since the node is writable, but if this is for a leaf
// update we track it, in case the initial write to this node didn't
// update the leaf.
if _, ok := t.writable.Get(n); ok {
if t.trackMutate && forLeafUpdate && n.leaf != nil {
t.trackChannel(n.leaf.mutateCh)
}
return n
}
// Mark this node as being mutated.
if t.trackMutate {
t.trackChannel(n.mutateCh)
}
// Mark its leaf as being mutated, if appropriate.
if t.trackMutate && forLeafUpdate && n.leaf != nil {
t.trackChannel(n.leaf.mutateCh)
}
// Copy the existing node. If you have set forLeafUpdate it will be
// safe to replace this leaf with another after you get your node for
// writing. You MUST replace it, because the channel associated with
// this leaf will be closed when this transaction is committed.
nc := &Node{
mutateCh: make(chan struct{}),
leaf: n.leaf,
}
if n.prefix != nil {
nc.prefix = make([]byte, len(n.prefix))
copy(nc.prefix, n.prefix)
}
if len(n.edges) != 0 {
nc.edges = make([]edge, len(n.edges))
copy(nc.edges, n.edges)
}
// Mark this node as writable.
t.writable.Add(nc, nil)
return nc
}
// Visit all the nodes in the tree under n, and add their mutateChannels to the transaction
// Returns the size of the subtree visited
func (t *Txn) trackChannelsAndCount(n *Node) int {
// Count only leaf nodes
leaves := 0
if n.leaf != nil {
leaves = 1
}
// Mark this node as being mutated.
if t.trackMutate {
t.trackChannel(n.mutateCh)
}
// Mark its leaf as being mutated, if appropriate.
if t.trackMutate && n.leaf != nil {
t.trackChannel(n.leaf.mutateCh)
}
// Recurse on the children
for _, e := range n.edges {
leaves += t.trackChannelsAndCount(e.node)
}
return leaves
}
// mergeChild is called to collapse the given node with its child. This is only
// called when the given node is not a leaf and has a single edge.
func (t *Txn) mergeChild(n *Node) {
// Mark the child node as being mutated since we are about to abandon
// it. We don't need to mark the leaf since we are retaining it if it
// is there.
e := n.edges[0]
child := e.node
if t.trackMutate {
t.trackChannel(child.mutateCh)
}
// Merge the nodes.
n.prefix = concat(n.prefix, child.prefix)
n.leaf = child.leaf
if len(child.edges) != 0 {
n.edges = make([]edge, len(child.edges))
copy(n.edges, child.edges)
} else {
n.edges = nil
}
}
// insert does a recursive insertion
func (t *Txn) insert(n *Node, k, search []byte, v interface{}) (*Node, interface{}, bool) {
// Handle key exhaustion
if len(search) == 0 {
var oldVal interface{}
didUpdate := false
if n.isLeaf() {
oldVal = n.leaf.val
didUpdate = true
}
nc := t.writeNode(n, true)
nc.leaf = &leafNode{
mutateCh: make(chan struct{}),
key: k,
val: v,
}
return nc, oldVal, didUpdate
}
// Look for the edge
idx, child := n.getEdge(search[0])
// No edge, create one
if child == nil {
e := edge{
label: search[0],
node: &Node{
mutateCh: make(chan struct{}),
leaf: &leafNode{
mutateCh: make(chan struct{}),
key: k,
val: v,
},
prefix: search,
},
}
nc := t.writeNode(n, false)
nc.addEdge(e)
return nc, nil, false
}
// Determine longest prefix of the search key on match
commonPrefix := longestPrefix(search, child.prefix)
if commonPrefix == len(child.prefix) {
search = search[commonPrefix:]
newChild, oldVal, didUpdate := t.insert(child, k, search, v)
if newChild != nil {
nc := t.writeNode(n, false)
nc.edges[idx].node = newChild
return nc, oldVal, didUpdate
}
return nil, oldVal, didUpdate
}
// Split the node
nc := t.writeNode(n, false)
splitNode := &Node{
mutateCh: make(chan struct{}),
prefix: search[:commonPrefix],
}
nc.replaceEdge(edge{
label: search[0],
node: splitNode,
})
// Restore the existing child node
modChild := t.writeNode(child, false)
splitNode.addEdge(edge{
label: modChild.prefix[commonPrefix],
node: modChild,
})
modChild.prefix = modChild.prefix[commonPrefix:]
// Create a new leaf node
leaf := &leafNode{
mutateCh: make(chan struct{}),
key: k,
val: v,
}
// If the new key is a subset, add to to this node
search = search[commonPrefix:]
if len(search) == 0 {
splitNode.leaf = leaf
return nc, nil, false
}
// Create a new edge for the node
splitNode.addEdge(edge{
label: search[0],
node: &Node{
mutateCh: make(chan struct{}),
leaf: leaf,
prefix: search,
},
})
return nc, nil, false
}
// delete does a recursive deletion
func (t *Txn) delete(parent, n *Node, search []byte) (*Node, *leafNode) {
// Check for key exhaustion
if len(search) == 0 {
if !n.isLeaf() {
return nil, nil
}
// Copy the pointer in case we are in a transaction that already
// modified this node since the node will be reused. Any changes
// made to the node will not affect returning the original leaf
// value.
oldLeaf := n.leaf
// Remove the leaf node
nc := t.writeNode(n, true)
nc.leaf = nil
// Check if this node should be merged
if n != t.root && len(nc.edges) == 1 {
t.mergeChild(nc)
}
return nc, oldLeaf
}
// Look for an edge
label := search[0]
idx, child := n.getEdge(label)
if child == nil || !bytes.HasPrefix(search, child.prefix) {
return nil, nil
}
// Consume the search prefix
search = search[len(child.prefix):]
newChild, leaf := t.delete(n, child, search)
if newChild == nil {
return nil, nil
}
// Copy this node. WATCH OUT - it's safe to pass "false" here because we
// will only ADD a leaf via nc.mergeChild() if there isn't one due to
// the !nc.isLeaf() check in the logic just below. This is pretty subtle,
// so be careful if you change any of the logic here.
nc := t.writeNode(n, false)
// Delete the edge if the node has no edges
if newChild.leaf == nil && len(newChild.edges) == 0 {
nc.delEdge(label)
if n != t.root && len(nc.edges) == 1 && !nc.isLeaf() {
t.mergeChild(nc)
}
} else {
nc.edges[idx].node = newChild
}
return nc, leaf
}
// delete does a recursive deletion
func (t *Txn) deletePrefix(parent, n *Node, search []byte) (*Node, int) {
// Check for key exhaustion
if len(search) == 0 {
nc := t.writeNode(n, true)
if n.isLeaf() {
nc.leaf = nil
}
nc.edges = nil
return nc, t.trackChannelsAndCount(n)
}
// Look for an edge
label := search[0]
idx, child := n.getEdge(label)
// We make sure that either the child node's prefix starts with the search term, or the search term starts with the child node's prefix
// Need to do both so that we can delete prefixes that don't correspond to any node in the tree
if child == nil || (!bytes.HasPrefix(child.prefix, search) && !bytes.HasPrefix(search, child.prefix)) {
return nil, 0
}
// Consume the search prefix
if len(child.prefix) > len(search) {
search = []byte("")
} else {
search = search[len(child.prefix):]
}
newChild, numDeletions := t.deletePrefix(n, child, search)
if newChild == nil {
return nil, 0
}
// Copy this node. WATCH OUT - it's safe to pass "false" here because we
// will only ADD a leaf via nc.mergeChild() if there isn't one due to
// the !nc.isLeaf() check in the logic just below. This is pretty subtle,
// so be careful if you change any of the logic here.
nc := t.writeNode(n, false)
// Delete the edge if the node has no edges
if newChild.leaf == nil && len(newChild.edges) == 0 {
nc.delEdge(label)
if n != t.root && len(nc.edges) == 1 && !nc.isLeaf() {
t.mergeChild(nc)
}
} else {
nc.edges[idx].node = newChild
}
return nc, numDeletions
}
// Insert is used to add or update a given key. The return provides
// the previous value and a bool indicating if any was set.
func (t *Txn) Insert(k []byte, v interface{}) (interface{}, bool) {
newRoot, oldVal, didUpdate := t.insert(t.root, k, k, v)
if newRoot != nil {
t.root = newRoot
}
if !didUpdate {
t.size++
}
return oldVal, didUpdate
}
// Delete is used to delete a given key. Returns the old value if any,
// and a bool indicating if the key was set.
func (t *Txn) Delete(k []byte) (interface{}, bool) {
newRoot, leaf := t.delete(nil, t.root, k)
if newRoot != nil {
t.root = newRoot
}
if leaf != nil {
t.size--
return leaf.val, true
}
return nil, false
}
// DeletePrefix is used to delete an entire subtree that matches the prefix
// This will delete all nodes under that prefix
func (t *Txn) DeletePrefix(prefix []byte) bool {
newRoot, numDeletions := t.deletePrefix(nil, t.root, prefix)
if newRoot != nil {
t.root = newRoot
t.size = t.size - numDeletions
return true
}
return false
}
// Root returns the current root of the radix tree within this
// transaction. The root is not safe across insert and delete operations,
// but can be used to read the current state during a transaction.
func (t *Txn) Root() *Node {
return t.root
}
// Get is used to lookup a specific key, returning
// the value and if it was found
func (t *Txn) Get(k []byte) (interface{}, bool) {
return t.root.Get(k)
}
// GetWatch is used to lookup a specific key, returning
// the watch channel, value and if it was found
func (t *Txn) GetWatch(k []byte) (<-chan struct{}, interface{}, bool) {
return t.root.GetWatch(k)
}
// Commit is used to finalize the transaction and return a new tree. If mutation
// tracking is turned on then notifications will also be issued.
func (t *Txn) Commit() *Tree {
nt := t.CommitOnly()
if t.trackMutate {
t.Notify()
}
return nt
}
// CommitOnly is used to finalize the transaction and return a new tree, but
// does not issue any notifications until Notify is called.
func (t *Txn) CommitOnly() *Tree {
nt := &Tree{t.root, t.size}
t.writable = nil
return nt
}
// slowNotify does a complete comparison of the before and after trees in order
// to trigger notifications. This doesn't require any additional state but it
// is very expensive to compute.
func (t *Txn) slowNotify() {
snapIter := t.snap.rawIterator()
rootIter := t.root.rawIterator()
for snapIter.Front() != nil || rootIter.Front() != nil {
// If we've exhausted the nodes in the old snapshot, we know
// there's nothing remaining to notify.
if snapIter.Front() == nil {
return
}
snapElem := snapIter.Front()
// If we've exhausted the nodes in the new root, we know we need
// to invalidate everything that remains in the old snapshot. We
// know from the loop condition there's something in the old
// snapshot.
if rootIter.Front() == nil {
close(snapElem.mutateCh)
if snapElem.isLeaf() {
close(snapElem.leaf.mutateCh)
}
snapIter.Next()
continue
}
// Do one string compare so we can check the various conditions
// below without repeating the compare.
cmp := strings.Compare(snapIter.Path(), rootIter.Path())
// If the snapshot is behind the root, then we must have deleted
// this node during the transaction.
if cmp < 0 {
close(snapElem.mutateCh)
if snapElem.isLeaf() {
close(snapElem.leaf.mutateCh)
}
snapIter.Next()
continue
}
// If the snapshot is ahead of the root, then we must have added
// this node during the transaction.
if cmp > 0 {
rootIter.Next()
continue
}
// If we have the same path, then we need to see if we mutated a
// node and possibly the leaf.
rootElem := rootIter.Front()
if snapElem != rootElem {
close(snapElem.mutateCh)
if snapElem.leaf != nil && (snapElem.leaf != rootElem.leaf) {
close(snapElem.leaf.mutateCh)
}
}
snapIter.Next()
rootIter.Next()
}
}
// Notify is used along with TrackMutate to trigger notifications. This must
// only be done once a transaction is committed via CommitOnly, and it is called
// automatically by Commit.
func (t *Txn) Notify() {
if !t.trackMutate {
return
}
// If we've overflowed the tracking state we can't use it in any way and
// need to do a full tree compare.
if t.trackOverflow {
t.slowNotify()
} else {
for ch := range t.trackChannels {
close(ch)
}
}
// Clean up the tracking state so that a re-notify is safe (will trigger
// the else clause above which will be a no-op).
t.trackChannels = nil
t.trackOverflow = false
}
// Insert is used to add or update a given key. The return provides
// the new tree, previous value and a bool indicating if any was set.
func (t *Tree) Insert(k []byte, v interface{}) (*Tree, interface{}, bool) {
txn := t.Txn()
old, ok := txn.Insert(k, v)
return txn.Commit(), old, ok
}
// Delete is used to delete a given key. Returns the new tree,
// old value if any, and a bool indicating if the key was set.
func (t *Tree) Delete(k []byte) (*Tree, interface{}, bool) {
txn := t.Txn()
old, ok := txn.Delete(k)
return txn.Commit(), old, ok
}
// DeletePrefix is used to delete all nodes starting with a given prefix. Returns the new tree,
// and a bool indicating if the prefix matched any nodes
func (t *Tree) DeletePrefix(k []byte) (*Tree, bool) {
txn := t.Txn()
ok := txn.DeletePrefix(k)
return txn.Commit(), ok
}
// Root returns the root node of the tree which can be used for richer
// query operations.
func (t *Tree) Root() *Node {
return t.root
}
// Get is used to lookup a specific key, returning
// the value and if it was found
func (t *Tree) Get(k []byte) (interface{}, bool) {
return t.root.Get(k)
}
// longestPrefix finds the length of the shared prefix
// of two strings
func longestPrefix(k1, k2 []byte) int {
max := len(k1)
if l := len(k2); l < max {
max = l
}
var i int
for i = 0; i < max; i++ {
if k1[i] != k2[i] {
break
}
}
return i
}
// concat two byte slices, returning a third new copy
func concat(a, b []byte) []byte {
c := make([]byte, len(a)+len(b))
copy(c, a)
copy(c[len(a):], b)
return c
}

188
vendor/github.com/hashicorp/go-immutable-radix/iter.go generated vendored Normal file
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package iradix
import (
"bytes"
)
// Iterator is used to iterate over a set of nodes
// in pre-order
type Iterator struct {
node *Node
stack []edges
}
// SeekPrefixWatch is used to seek the iterator to a given prefix
// and returns the watch channel of the finest granularity
func (i *Iterator) SeekPrefixWatch(prefix []byte) (watch <-chan struct{}) {
// Wipe the stack
i.stack = nil
n := i.node
watch = n.mutateCh
search := prefix
for {
// Check for key exhaution
if len(search) == 0 {
i.node = n
return
}
// Look for an edge
_, n = n.getEdge(search[0])
if n == nil {
i.node = nil
return
}
// Update to the finest granularity as the search makes progress
watch = n.mutateCh
// Consume the search prefix
if bytes.HasPrefix(search, n.prefix) {
search = search[len(n.prefix):]
} else if bytes.HasPrefix(n.prefix, search) {
i.node = n
return
} else {
i.node = nil
return
}
}
}
// SeekPrefix is used to seek the iterator to a given prefix
func (i *Iterator) SeekPrefix(prefix []byte) {
i.SeekPrefixWatch(prefix)
}
func (i *Iterator) recurseMin(n *Node) *Node {
// Traverse to the minimum child
if n.leaf != nil {
return n
}
if len(n.edges) > 0 {
// Add all the other edges to the stack (the min node will be added as
// we recurse)
i.stack = append(i.stack, n.edges[1:])
return i.recurseMin(n.edges[0].node)
}
// Shouldn't be possible
return nil
}
// SeekLowerBound is used to seek the iterator to the smallest key that is
// greater or equal to the given key. There is no watch variant as it's hard to
// predict based on the radix structure which node(s) changes might affect the
// result.
func (i *Iterator) SeekLowerBound(key []byte) {
// Wipe the stack. Unlike Prefix iteration, we need to build the stack as we
// go because we need only a subset of edges of many nodes in the path to the
// leaf with the lower bound.
i.stack = []edges{}
n := i.node
search := key
found := func(n *Node) {
i.node = n
i.stack = append(i.stack, edges{edge{node: n}})
}
for {
// Compare current prefix with the search key's same-length prefix.
var prefixCmp int
if len(n.prefix) < len(search) {
prefixCmp = bytes.Compare(n.prefix, search[0:len(n.prefix)])
} else {
prefixCmp = bytes.Compare(n.prefix, search)
}
if prefixCmp > 0 {
// Prefix is larger, that means the lower bound is greater than the search
// and from now on we need to follow the minimum path to the smallest
// leaf under this subtree.
n = i.recurseMin(n)
if n != nil {
found(n)
}
return
}
if prefixCmp < 0 {
// Prefix is smaller than search prefix, that means there is no lower
// bound
i.node = nil
return
}
// Prefix is equal, we are still heading for an exact match. If this is a
// leaf we're done.
if n.leaf != nil {
if bytes.Compare(n.leaf.key, key) < 0 {
i.node = nil
return
}
found(n)
return
}
// Consume the search prefix
if len(n.prefix) > len(search) {
search = []byte{}
} else {
search = search[len(n.prefix):]
}
// Otherwise, take the lower bound next edge.
idx, lbNode := n.getLowerBoundEdge(search[0])
if lbNode == nil {
i.node = nil
return
}
// Create stack edges for the all strictly higher edges in this node.
if idx+1 < len(n.edges) {
i.stack = append(i.stack, n.edges[idx+1:])
}
i.node = lbNode
// Recurse
n = lbNode
}
}
// Next returns the next node in order
func (i *Iterator) Next() ([]byte, interface{}, bool) {
// Initialize our stack if needed
if i.stack == nil && i.node != nil {
i.stack = []edges{
edges{
edge{node: i.node},
},
}
}
for len(i.stack) > 0 {
// Inspect the last element of the stack
n := len(i.stack)
last := i.stack[n-1]
elem := last[0].node
// Update the stack
if len(last) > 1 {
i.stack[n-1] = last[1:]
} else {
i.stack = i.stack[:n-1]
}
// Push the edges onto the frontier
if len(elem.edges) > 0 {
i.stack = append(i.stack, elem.edges)
}
// Return the leaf values if any
if elem.leaf != nil {
return elem.leaf.key, elem.leaf.val, true
}
}
return nil, nil, false
}

304
vendor/github.com/hashicorp/go-immutable-radix/node.go generated vendored Normal file
View File

@ -0,0 +1,304 @@
package iradix
import (
"bytes"
"sort"
)
// WalkFn is used when walking the tree. Takes a
// key and value, returning if iteration should
// be terminated.
type WalkFn func(k []byte, v interface{}) bool
// leafNode is used to represent a value
type leafNode struct {
mutateCh chan struct{}
key []byte
val interface{}
}
// edge is used to represent an edge node
type edge struct {
label byte
node *Node
}
// Node is an immutable node in the radix tree
type Node struct {
// mutateCh is closed if this node is modified
mutateCh chan struct{}
// leaf is used to store possible leaf
leaf *leafNode
// prefix is the common prefix we ignore
prefix []byte
// Edges should be stored in-order for iteration.
// We avoid a fully materialized slice to save memory,
// since in most cases we expect to be sparse
edges edges
}
func (n *Node) isLeaf() bool {
return n.leaf != nil
}
func (n *Node) addEdge(e edge) {
num := len(n.edges)
idx := sort.Search(num, func(i int) bool {
return n.edges[i].label >= e.label
})
n.edges = append(n.edges, e)
if idx != num {
copy(n.edges[idx+1:], n.edges[idx:num])
n.edges[idx] = e
}
}
func (n *Node) replaceEdge(e edge) {
num := len(n.edges)
idx := sort.Search(num, func(i int) bool {
return n.edges[i].label >= e.label
})
if idx < num && n.edges[idx].label == e.label {
n.edges[idx].node = e.node
return
}
panic("replacing missing edge")
}
func (n *Node) getEdge(label byte) (int, *Node) {
num := len(n.edges)
idx := sort.Search(num, func(i int) bool {
return n.edges[i].label >= label
})
if idx < num && n.edges[idx].label == label {
return idx, n.edges[idx].node
}
return -1, nil
}
func (n *Node) getLowerBoundEdge(label byte) (int, *Node) {
num := len(n.edges)
idx := sort.Search(num, func(i int) bool {
return n.edges[i].label >= label
})
// we want lower bound behavior so return even if it's not an exact match
if idx < num {
return idx, n.edges[idx].node
}
return -1, nil
}
func (n *Node) delEdge(label byte) {
num := len(n.edges)
idx := sort.Search(num, func(i int) bool {
return n.edges[i].label >= label
})
if idx < num && n.edges[idx].label == label {
copy(n.edges[idx:], n.edges[idx+1:])
n.edges[len(n.edges)-1] = edge{}
n.edges = n.edges[:len(n.edges)-1]
}
}
func (n *Node) GetWatch(k []byte) (<-chan struct{}, interface{}, bool) {
search := k
watch := n.mutateCh
for {
// Check for key exhaustion
if len(search) == 0 {
if n.isLeaf() {
return n.leaf.mutateCh, n.leaf.val, true
}
break
}
// Look for an edge
_, n = n.getEdge(search[0])
if n == nil {
break
}
// Update to the finest granularity as the search makes progress
watch = n.mutateCh
// Consume the search prefix
if bytes.HasPrefix(search, n.prefix) {
search = search[len(n.prefix):]
} else {
break
}
}
return watch, nil, false
}
func (n *Node) Get(k []byte) (interface{}, bool) {
_, val, ok := n.GetWatch(k)
return val, ok
}
// LongestPrefix is like Get, but instead of an
// exact match, it will return the longest prefix match.
func (n *Node) LongestPrefix(k []byte) ([]byte, interface{}, bool) {
var last *leafNode
search := k
for {
// Look for a leaf node
if n.isLeaf() {
last = n.leaf
}
// Check for key exhaution
if len(search) == 0 {
break
}
// Look for an edge
_, n = n.getEdge(search[0])
if n == nil {
break
}
// Consume the search prefix
if bytes.HasPrefix(search, n.prefix) {
search = search[len(n.prefix):]
} else {
break
}
}
if last != nil {
return last.key, last.val, true
}
return nil, nil, false
}
// Minimum is used to return the minimum value in the tree
func (n *Node) Minimum() ([]byte, interface{}, bool) {
for {
if n.isLeaf() {
return n.leaf.key, n.leaf.val, true
}
if len(n.edges) > 0 {
n = n.edges[0].node
} else {
break
}
}
return nil, nil, false
}
// Maximum is used to return the maximum value in the tree
func (n *Node) Maximum() ([]byte, interface{}, bool) {
for {
if num := len(n.edges); num > 0 {
n = n.edges[num-1].node
continue
}
if n.isLeaf() {
return n.leaf.key, n.leaf.val, true
} else {
break
}
}
return nil, nil, false
}
// Iterator is used to return an iterator at
// the given node to walk the tree
func (n *Node) Iterator() *Iterator {
return &Iterator{node: n}
}
// rawIterator is used to return a raw iterator at the given node to walk the
// tree.
func (n *Node) rawIterator() *rawIterator {
iter := &rawIterator{node: n}
iter.Next()
return iter
}
// Walk is used to walk the tree
func (n *Node) Walk(fn WalkFn) {
recursiveWalk(n, fn)
}
// WalkPrefix is used to walk the tree under a prefix
func (n *Node) WalkPrefix(prefix []byte, fn WalkFn) {
search := prefix
for {
// Check for key exhaution
if len(search) == 0 {
recursiveWalk(n, fn)
return
}
// Look for an edge
_, n = n.getEdge(search[0])
if n == nil {
break
}
// Consume the search prefix
if bytes.HasPrefix(search, n.prefix) {
search = search[len(n.prefix):]
} else if bytes.HasPrefix(n.prefix, search) {
// Child may be under our search prefix
recursiveWalk(n, fn)
return
} else {
break
}
}
}
// WalkPath is used to walk the tree, but only visiting nodes
// from the root down to a given leaf. Where WalkPrefix walks
// all the entries *under* the given prefix, this walks the
// entries *above* the given prefix.
func (n *Node) WalkPath(path []byte, fn WalkFn) {
search := path
for {
// Visit the leaf values if any
if n.leaf != nil && fn(n.leaf.key, n.leaf.val) {
return
}
// Check for key exhaution
if len(search) == 0 {
return
}
// Look for an edge
_, n = n.getEdge(search[0])
if n == nil {
return
}
// Consume the search prefix
if bytes.HasPrefix(search, n.prefix) {
search = search[len(n.prefix):]
} else {
break
}
}
}
// recursiveWalk is used to do a pre-order walk of a node
// recursively. Returns true if the walk should be aborted
func recursiveWalk(n *Node, fn WalkFn) bool {
// Visit the leaf values if any
if n.leaf != nil && fn(n.leaf.key, n.leaf.val) {
return true
}
// Recurse on the children
for _, e := range n.edges {
if recursiveWalk(e.node, fn) {
return true
}
}
return false
}

78
vendor/github.com/hashicorp/go-immutable-radix/raw_iter.go generated vendored Normal file
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@ -0,0 +1,78 @@
package iradix
// rawIterator visits each of the nodes in the tree, even the ones that are not
// leaves. It keeps track of the effective path (what a leaf at a given node
// would be called), which is useful for comparing trees.
type rawIterator struct {
// node is the starting node in the tree for the iterator.
node *Node
// stack keeps track of edges in the frontier.
stack []rawStackEntry
// pos is the current position of the iterator.
pos *Node
// path is the effective path of the current iterator position,
// regardless of whether the current node is a leaf.
path string
}
// rawStackEntry is used to keep track of the cumulative common path as well as
// its associated edges in the frontier.
type rawStackEntry struct {
path string
edges edges
}
// Front returns the current node that has been iterated to.
func (i *rawIterator) Front() *Node {
return i.pos
}
// Path returns the effective path of the current node, even if it's not actually
// a leaf.
func (i *rawIterator) Path() string {
return i.path
}
// Next advances the iterator to the next node.
func (i *rawIterator) Next() {
// Initialize our stack if needed.
if i.stack == nil && i.node != nil {
i.stack = []rawStackEntry{
rawStackEntry{
edges: edges{
edge{node: i.node},
},
},
}
}
for len(i.stack) > 0 {
// Inspect the last element of the stack.
n := len(i.stack)
last := i.stack[n-1]
elem := last.edges[0].node
// Update the stack.
if len(last.edges) > 1 {
i.stack[n-1].edges = last.edges[1:]
} else {
i.stack = i.stack[:n-1]
}
// Push the edges onto the frontier.
if len(elem.edges) > 0 {
path := last.path + string(elem.prefix)
i.stack = append(i.stack, rawStackEntry{path, elem.edges})
}
i.pos = elem
i.path = last.path + string(elem.prefix)
return
}
i.pos = nil
i.path = ""
}

12
vendor/github.com/hashicorp/go-multierror/.travis.yml generated vendored
View File

@ -1,12 +0,0 @@
sudo: false
language: go
go:
- 1.x
branches:
only:
- master
script: env GO111MODULE=on make test testrace

29
vendor/github.com/hashicorp/go-multierror/README.md generated vendored
View File

@ -1,10 +1,11 @@
# go-multierror
[![Build Status](http://img.shields.io/travis/hashicorp/go-multierror.svg?style=flat-square)][travis]
[![Go Documentation](http://img.shields.io/badge/go-documentation-blue.svg?style=flat-square)][godocs]
[![CircleCI](https://img.shields.io/circleci/build/github/hashicorp/go-multierror/master)](https://circleci.com/gh/hashicorp/go-multierror)
[![Go Reference](https://pkg.go.dev/badge/github.com/hashicorp/go-multierror.svg)](https://pkg.go.dev/github.com/hashicorp/go-multierror)
![GitHub go.mod Go version](https://img.shields.io/github/go-mod/go-version/hashicorp/go-multierror)
[travis]: https://travis-ci.org/hashicorp/go-multierror
[godocs]: https://godoc.org/github.com/hashicorp/go-multierror
[circleci]: https://app.circleci.com/pipelines/github/hashicorp/go-multierror
[godocs]: https://pkg.go.dev/github.com/hashicorp/go-multierror
`go-multierror` is a package for Go that provides a mechanism for
representing a list of `error` values as a single `error`.
@ -24,7 +25,25 @@ for introspecting on error values.
Install using `go get github.com/hashicorp/go-multierror`.
Full documentation is available at
http://godoc.org/github.com/hashicorp/go-multierror
https://pkg.go.dev/github.com/hashicorp/go-multierror
### Requires go version 1.13 or newer
`go-multierror` requires go version 1.13 or newer. Go 1.13 introduced
[error wrapping](https://golang.org/doc/go1.13#error_wrapping), which
this library takes advantage of.
If you need to use an earlier version of go, you can use the
[v1.0.0](https://github.com/hashicorp/go-multierror/tree/v1.0.0)
tag, which doesn't rely on features in go 1.13.
If you see compile errors that look like the below, it's likely that
you're on an older version of go:
```
/go/src/github.com/hashicorp/go-multierror/multierror.go:112:9: undefined: errors.As
/go/src/github.com/hashicorp/go-multierror/multierror.go:117:9: undefined: errors.Is
```
## Usage

2
vendor/github.com/hashicorp/go-multierror/append.go generated vendored
View File

@ -6,6 +6,8 @@ package multierror
// If err is not a multierror.Error, then it will be turned into
// one. If any of the errs are multierr.Error, they will be flattened
// one level into err.
// Any nil errors within errs will be ignored. If err is nil, a new
// *Error will be returned.
func Append(err error, errs ...error) *Error {
switch err := err.(type) {
case *Error:

2
vendor/github.com/hashicorp/go-multierror/go.mod generated vendored
View File

@ -1,5 +1,5 @@
module github.com/hashicorp/go-multierror
go 1.14
go 1.13
require github.com/hashicorp/errwrap v1.0.0

15
vendor/github.com/hashicorp/go-multierror/multierror.go generated vendored
View File

@ -40,14 +40,17 @@ func (e *Error) GoString() string {
return fmt.Sprintf("*%#v", *e)
}
// WrappedErrors returns the list of errors that this Error is wrapping.
// It is an implementation of the errwrap.Wrapper interface so that
// multierror.Error can be used with that library.
// WrappedErrors returns the list of errors that this Error is wrapping. It is
// an implementation of the errwrap.Wrapper interface so that multierror.Error
// can be used with that library.
//
// This method is not safe to be called concurrently and is no different
// than accessing the Errors field directly. It is implemented only to
// satisfy the errwrap.Wrapper interface.
// This method is not safe to be called concurrently. Unlike accessing the
// Errors field directly, this function also checks if the multierror is nil to
// prevent a null-pointer panic. It satisfies the errwrap.Wrapper interface.
func (e *Error) WrappedErrors() []error {
if e == nil {
return nil
}
return e.Errors
}

2
vendor/github.com/hashicorp/go-plugin/.gitignore generated vendored Normal file
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@ -0,0 +1,2 @@
.DS_Store
.idea

353
vendor/github.com/hashicorp/go-plugin/LICENSE generated vendored Normal file
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@ -0,0 +1,353 @@
Mozilla Public License, version 2.0
1. Definitions
1.1. “Contributor”
means each individual or legal entity that creates, contributes to the
creation of, or owns Covered Software.
1.2. “Contributor Version”
means the combination of the Contributions of others (if any) used by a
Contributor and that particular Contributor’s Contribution.
1.3. “Contribution”
means Covered Software of a particular Contributor.
1.4. “Covered Software”
means Source Code Form to which the initial Contributor has attached the
notice in Exhibit A, the Executable Form of such Source Code Form, and
Modifications of such Source Code Form, in each case including portions
thereof.
1.5. “Incompatible With Secondary Licenses”
means
a. that the initial Contributor has attached the notice described in
Exhibit B to the Covered Software; or
b. that the Covered Software was made available under the terms of version
1.1 or earlier of the License, but not also under the terms of a
Secondary License.
1.6. “Executable Form”
means any form of the work other than Source Code Form.
1.7. “Larger Work”
means a work that combines Covered Software with other material, in a separate
file or files, that is not Covered Software.
1.8. “License”
means this document.
1.9. “Licensable”
means having the right to grant, to the maximum extent possible, whether at the
time of the initial grant or subsequently, any and all of the rights conveyed by
this License.
1.10. “Modifications”
means any of the following:
a. any file in Source Code Form that results from an addition to, deletion
from, or modification of the contents of Covered Software; or
b. any new file in Source Code Form that contains any Covered Software.
1.11. “Patent Claims” of a Contributor
means any patent claim(s), including without limitation, method, process,
and apparatus claims, in any patent Licensable by such Contributor that
would be infringed, but for the grant of the License, by the making,
using, selling, offering for sale, having made, import, or transfer of
either its Contributions or its Contributor Version.
1.12. “Secondary License”
means either the GNU General Public License, Version 2.0, the GNU Lesser
General Public License, Version 2.1, the GNU Affero General Public
License, Version 3.0, or any later versions of those licenses.
1.13. “Source Code Form”
means the form of the work preferred for making modifications.
1.14. “You” (or “Your”)
means an individual or a legal entity exercising rights under this
License. For legal entities, “You” includes any entity that controls, is
controlled by, or is under common control with You. For purposes of this
definition, “control” means (a) the power, direct or indirect, to cause
the direction or management of such entity, whether by contract or
otherwise, or (b) ownership of more than fifty percent (50%) of the
outstanding shares or beneficial ownership of such entity.
2. License Grants and Conditions
2.1. Grants
Each Contributor hereby grants You a world-wide, royalty-free,
non-exclusive license:
a. under intellectual property rights (other than patent or trademark)
Licensable by such Contributor to use, reproduce, make available,
modify, display, perform, distribute, and otherwise exploit its
Contributions, either on an unmodified basis, with Modifications, or as
part of a Larger Work; and
b. under Patent Claims of such Contributor to make, use, sell, offer for
sale, have made, import, and otherwise transfer either its Contributions
or its Contributor Version.
2.2. Effective Date
The licenses granted in Section 2.1 with respect to any Contribution become
effective for each Contribution on the date the Contributor first distributes
such Contribution.
2.3. Limitations on Grant Scope
The licenses granted in this Section 2 are the only rights granted under this
License. No additional rights or licenses will be implied from the distribution
or licensing of Covered Software under this License. Notwithstanding Section
2.1(b) above, no patent license is granted by a Contributor:
a. for any code that a Contributor has removed from Covered Software; or
b. for infringements caused by: (i) Your and any other third party’s
modifications of Covered Software, or (ii) the combination of its
Contributions with other software (except as part of its Contributor
Version); or
c. under Patent Claims infringed by Covered Software in the absence of its
Contributions.
This License does not grant any rights in the trademarks, service marks, or
logos of any Contributor (except as may be necessary to comply with the
notice requirements in Section 3.4).
2.4. Subsequent Licenses
No Contributor makes additional grants as a result of Your choice to
distribute the Covered Software under a subsequent version of this License
(see Section 10.2) or under the terms of a Secondary License (if permitted
under the terms of Section 3.3).
2.5. Representation
Each Contributor represents that the Contributor believes its Contributions
are its original creation(s) or it has sufficient rights to grant the
rights to its Contributions conveyed by this License.
2.6. Fair Use
This License is not intended to limit any rights You have under applicable
copyright doctrines of fair use, fair dealing, or other equivalents.
2.7. Conditions
Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
Section 2.1.
3. Responsibilities
3.1. Distribution of Source Form
All distribution of Covered Software in Source Code Form, including any
Modifications that You create or to which You contribute, must be under the
terms of this License. You must inform recipients that the Source Code Form
of the Covered Software is governed by the terms of this License, and how
they can obtain a copy of this License. You may not attempt to alter or
restrict the recipients’ rights in the Source Code Form.
3.2. Distribution of Executable Form
If You distribute Covered Software in Executable Form then:
a. such Covered Software must also be made available in Source Code Form,
as described in Section 3.1, and You must inform recipients of the
Executable Form how they can obtain a copy of such Source Code Form by
reasonable means in a timely manner, at a charge no more than the cost
of distribution to the recipient; and
b. You may distribute such Executable Form under the terms of this License,
or sublicense it under different terms, provided that the license for
the Executable Form does not attempt to limit or alter the recipients’
rights in the Source Code Form under this License.
3.3. Distribution of a Larger Work
You may create and distribute a Larger Work under terms of Your choice,
provided that You also comply with the requirements of this License for the
Covered Software. If the Larger Work is a combination of Covered Software
with a work governed by one or more Secondary Licenses, and the Covered
Software is not Incompatible With Secondary Licenses, this License permits
You to additionally distribute such Covered Software under the terms of
such Secondary License(s), so that the recipient of the Larger Work may, at
their option, further distribute the Covered Software under the terms of
either this License or such Secondary License(s).
3.4. Notices
You may not remove or alter the substance of any license notices (including
copyright notices, patent notices, disclaimers of warranty, or limitations
of liability) contained within the Source Code Form of the Covered
Software, except that You may alter any license notices to the extent
required to remedy known factual inaccuracies.
3.5. Application of Additional Terms
You may choose to offer, and to charge a fee for, warranty, support,
indemnity or liability obligations to one or more recipients of Covered
Software. However, You may do so only on Your own behalf, and not on behalf
of any Contributor. You must make it absolutely clear that any such
warranty, support, indemnity, or liability obligation is offered by You
alone, and You hereby agree to indemnify every Contributor for any
liability incurred by such Contributor as a result of warranty, support,
indemnity or liability terms You offer. You may include additional
disclaimers of warranty and limitations of liability specific to any
jurisdiction.
4. Inability to Comply Due to Statute or Regulation
If it is impossible for You to comply with any of the terms of this License
with respect to some or all of the Covered Software due to statute, judicial
order, or regulation then You must: (a) comply with the terms of this License
to the maximum extent possible; and (b) describe the limitations and the code
they affect. Such description must be placed in a text file included with all
distributions of the Covered Software under this License. Except to the
extent prohibited by statute or regulation, such description must be
sufficiently detailed for a recipient of ordinary skill to be able to
understand it.
5. Termination
5.1. The rights granted under this License will terminate automatically if You
fail to comply with any of its terms. However, if You become compliant,
then the rights granted under this License from a particular Contributor
are reinstated (a) provisionally, unless and until such Contributor
explicitly and finally terminates Your grants, and (b) on an ongoing basis,
if such Contributor fails to notify You of the non-compliance by some
reasonable means prior to 60 days after You have come back into compliance.
Moreover, Your grants from a particular Contributor are reinstated on an
ongoing basis if such Contributor notifies You of the non-compliance by
some reasonable means, this is the first time You have received notice of
non-compliance with this License from such Contributor, and You become
compliant prior to 30 days after Your receipt of the notice.
5.2. If You initiate litigation against any entity by asserting a patent
infringement claim (excluding declaratory judgment actions, counter-claims,
and cross-claims) alleging that a Contributor Version directly or
indirectly infringes any patent, then the rights granted to You by any and
all Contributors for the Covered Software under Section 2.1 of this License
shall terminate.
5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
license agreements (excluding distributors and resellers) which have been
validly granted by You or Your distributors under this License prior to
termination shall survive termination.
6. Disclaimer of Warranty
Covered Software is provided under this License on an “as is” basis, without
warranty of any kind, either expressed, implied, or statutory, including,
without limitation, warranties that the Covered Software is free of defects,
merchantable, fit for a particular purpose or non-infringing. The entire
risk as to the quality and performance of the Covered Software is with You.
Should any Covered Software prove defective in any respect, You (not any
Contributor) assume the cost of any necessary servicing, repair, or
correction. This disclaimer of warranty constitutes an essential part of this
License. No use of any Covered Software is authorized under this License
except under this disclaimer.
7. Limitation of Liability
Under no circumstances and under no legal theory, whether tort (including
negligence), contract, or otherwise, shall any Contributor, or anyone who
distributes Covered Software as permitted above, be liable to You for any
direct, indirect, special, incidental, or consequential damages of any
character including, without limitation, damages for lost profits, loss of
goodwill, work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses, even if such party shall have been
informed of the possibility of such damages. This limitation of liability
shall not apply to liability for death or personal injury resulting from such
party’s negligence to the extent applicable law prohibits such limitation.
Some jurisdictions do not allow the exclusion or limitation of incidental or
consequential damages, so this exclusion and limitation may not apply to You.
8. Litigation
Any litigation relating to this License may be brought only in the courts of
a jurisdiction where the defendant maintains its principal place of business
and such litigation shall be governed by laws of that jurisdiction, without
reference to its conflict-of-law provisions. Nothing in this Section shall
prevent a party’s ability to bring cross-claims or counter-claims.
9. Miscellaneous
This License represents the complete agreement concerning the subject matter
hereof. If any provision of this License is held to be unenforceable, such
provision shall be reformed only to the extent necessary to make it
enforceable. Any law or regulation which provides that the language of a
contract shall be construed against the drafter shall not be used to construe
this License against a Contributor.
10. Versions of the License
10.1. New Versions
Mozilla Foundation is the license steward. Except as provided in Section
10.3, no one other than the license steward has the right to modify or
publish new versions of this License. Each version will be given a
distinguishing version number.
10.2. Effect of New Versions
You may distribute the Covered Software under the terms of the version of
the License under which You originally received the Covered Software, or
under the terms of any subsequent version published by the license
steward.
10.3. Modified Versions
If you create software not governed by this License, and you want to
create a new license for such software, you may create and use a modified
version of this License if you rename the license and remove any
references to the name of the license steward (except to note that such
modified license differs from this License).
10.4. Distributing Source Code Form that is Incompatible With Secondary Licenses
If You choose to distribute Source Code Form that is Incompatible With
Secondary Licenses under the terms of this version of the License, the
notice described in Exhibit B of this License must be attached.
Exhibit A - Source Code Form License Notice
This Source Code Form is subject to the
terms of the Mozilla Public License, v.
2.0. If a copy of the MPL was not
distributed with this file, You can
obtain one at
http://mozilla.org/MPL/2.0/.
If it is not possible or desirable to put the notice in a particular file, then
You may include the notice in a location (such as a LICENSE file in a relevant
directory) where a recipient would be likely to look for such a notice.
You may add additional accurate notices of copyright ownership.
Exhibit B - “Incompatible With Secondary Licenses” Notice
This Source Code Form is “Incompatible
With Secondary Licenses”, as defined by
the Mozilla Public License, v. 2.0.

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# Go Plugin System over RPC
`go-plugin` is a Go (golang) plugin system over RPC. It is the plugin system
that has been in use by HashiCorp tooling for over 4 years. While initially
created for [Packer](https://www.packer.io), it is additionally in use by
[Terraform](https://www.terraform.io), [Nomad](https://www.nomadproject.io), and
[Vault](https://www.vaultproject.io).
While the plugin system is over RPC, it is currently only designed to work
over a local [reliable] network. Plugins over a real network are not supported
and will lead to unexpected behavior.
This plugin system has been used on millions of machines across many different
projects and has proven to be battle hardened and ready for production use.
## Features
The HashiCorp plugin system supports a number of features:
**Plugins are Go interface implementations.** This makes writing and consuming
plugins feel very natural. To a plugin author: you just implement an
interface as if it were going to run in the same process. For a plugin user:
you just use and call functions on an interface as if it were in the same
process. This plugin system handles the communication in between.
**Cross-language support.** Plugins can be written (and consumed) by
almost every major language. This library supports serving plugins via
[gRPC](http://www.grpc.io). gRPC-based plugins enable plugins to be written
in any language.
**Complex arguments and return values are supported.** This library
provides APIs for handling complex arguments and return values such
as interfaces, `io.Reader/Writer`, etc. We do this by giving you a library
(`MuxBroker`) for creating new connections between the client/server to
serve additional interfaces or transfer raw data.
**Bidirectional communication.** Because the plugin system supports
complex arguments, the host process can send it interface implementations
and the plugin can call back into the host process.
**Built-in Logging.** Any plugins that use the `log` standard library
will have log data automatically sent to the host process. The host
process will mirror this output prefixed with the path to the plugin
binary. This makes debugging with plugins simple. If the host system
uses [hclog](https://github.com/hashicorp/go-hclog) then the log data
will be structured. If the plugin also uses hclog, logs from the plugin
will be sent to the host hclog and be structured.
**Protocol Versioning.** A very basic "protocol version" is supported that
can be incremented to invalidate any previous plugins. This is useful when
interface signatures are changing, protocol level changes are necessary,
etc. When a protocol version is incompatible, a human friendly error
message is shown to the end user.
**Stdout/Stderr Syncing.** While plugins are subprocesses, they can continue
to use stdout/stderr as usual and the output will get mirrored back to
the host process. The host process can control what `io.Writer` these
streams go to to prevent this from happening.
**TTY Preservation.** Plugin subprocesses are connected to the identical
stdin file descriptor as the host process, allowing software that requires
a TTY to work. For example, a plugin can execute `ssh` and even though there
are multiple subprocesses and RPC happening, it will look and act perfectly
to the end user.
**Host upgrade while a plugin is running.** Plugins can be "reattached"
so that the host process can be upgraded while the plugin is still running.
This requires the host/plugin to know this is possible and daemonize
properly. `NewClient` takes a `ReattachConfig` to determine if and how to
reattach.
**Cryptographically Secure Plugins.** Plugins can be verified with an expected
checksum and RPC communications can be configured to use TLS. The host process
must be properly secured to protect this configuration.
## Architecture
The HashiCorp plugin system works by launching subprocesses and communicating
over RPC (using standard `net/rpc` or [gRPC](http://www.grpc.io)). A single
connection is made between any plugin and the host process. For net/rpc-based
plugins, we use a [connection multiplexing](https://github.com/hashicorp/yamux)
library to multiplex any other connections on top. For gRPC-based plugins,
the HTTP2 protocol handles multiplexing.
This architecture has a number of benefits:
* Plugins can't crash your host process: A panic in a plugin doesn't
panic the plugin user.
* Plugins are very easy to write: just write a Go application and `go build`.
Or use any other language to write a gRPC server with a tiny amount of
boilerplate to support go-plugin.
* Plugins are very easy to install: just put the binary in a location where
the host will find it (depends on the host but this library also provides
helpers), and the plugin host handles the rest.
* Plugins can be relatively secure: The plugin only has access to the
interfaces and args given to it, not to the entire memory space of the
process. Additionally, go-plugin can communicate with the plugin over
TLS.
## Usage
To use the plugin system, you must take the following steps. These are
high-level steps that must be done. Examples are available in the
`examples/` directory.
1. Choose the interface(s) you want to expose for plugins.
2. For each interface, implement an implementation of that interface
that communicates over a `net/rpc` connection or over a
[gRPC](http://www.grpc.io) connection or both. You'll have to implement
both a client and server implementation.
3. Create a `Plugin` implementation that knows how to create the RPC
client/server for a given plugin type.
4. Plugin authors call `plugin.Serve` to serve a plugin from the
`main` function.
5. Plugin users use `plugin.Client` to launch a subprocess and request
an interface implementation over RPC.
That's it! In practice, step 2 is the most tedious and time consuming step.
Even so, it isn't very difficult and you can see examples in the `examples/`
directory as well as throughout our various open source projects.
For complete API documentation, see [GoDoc](https://godoc.org/github.com/hashicorp/go-plugin).
## Roadmap
Our plugin system is constantly evolving. As we use the plugin system for
new projects or for new features in existing projects, we constantly find
improvements we can make.
At this point in time, the roadmap for the plugin system is:
**Semantic Versioning.** Plugins will be able to implement a semantic version.
This plugin system will give host processes a system for constraining
versions. This is in addition to the protocol versioning already present
which is more for larger underlying changes.
**Plugin fetching.** We will integrate with [go-getter](https://github.com/hashicorp/go-getter)
to support automatic download + install of plugins. Paired with cryptographically
secure plugins (above), we can make this a safe operation for an amazing
user experience.
## What About Shared Libraries?
When we started using plugins (late 2012, early 2013), plugins over RPC
were the only option since Go didn't support dynamic library loading. Today,
Go supports the [plugin](https://golang.org/pkg/plugin/) standard library with
a number of limitations. Since 2012, our plugin system has stabilized
from tens of millions of users using it, and has many benefits we've come to
value greatly.
For example, we use this plugin system in
[Vault](https://www.vaultproject.io) where dynamic library loading is
not acceptable for security reasons. That is an extreme
example, but we believe our library system has more upsides than downsides
over dynamic library loading and since we've had it built and tested for years,
we'll continue to use it.
Shared libraries have one major advantage over our system which is much
higher performance. In real world scenarios across our various tools,
we've never required any more performance out of our plugin system and it
has seen very high throughput, so this isn't a concern for us at the moment.

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package plugin
import (
"path/filepath"
)
// Discover discovers plugins that are in a given directory.
//
// The directory doesn't need to be absolute. For example, "." will work fine.
//
// This currently assumes any file matching the glob is a plugin.
// In the future this may be smarter about checking that a file is
// executable and so on.
//
// TODO: test
func Discover(glob, dir string) ([]string, error) {
var err error
// Make the directory absolute if it isn't already
if !filepath.IsAbs(dir) {
dir, err = filepath.Abs(dir)
if err != nil {
return nil, err
}
}
return filepath.Glob(filepath.Join(dir, glob))
}

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package plugin
// This is a type that wraps error types so that they can be messaged
// across RPC channels. Since "error" is an interface, we can't always
// gob-encode the underlying structure. This is a valid error interface
// implementer that we will push across.
type BasicError struct {
Message string
}
// NewBasicError is used to create a BasicError.
//
// err is allowed to be nil.
func NewBasicError(err error) *BasicError {
if err == nil {
return nil
}
return &BasicError{err.Error()}
}
func (e *BasicError) Error() string {
return e.Message
}

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module github.com/hashicorp/go-plugin
require (
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b // indirect
github.com/golang/protobuf v1.2.0
github.com/hashicorp/go-hclog v0.0.0-20180709165350-ff2cf002a8dd
github.com/hashicorp/yamux v0.0.0-20180604194846-3520598351bb
github.com/mitchellh/go-testing-interface v0.0.0-20171004221916-a61a99592b77
github.com/oklog/run v1.0.0
github.com/stretchr/testify v1.3.0 // indirect
golang.org/x/net v0.0.0-20180826012351-8a410e7b638d
golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4 // indirect
golang.org/x/sys v0.0.0-20190129075346-302c3dd5f1cc // indirect
golang.org/x/text v0.3.0 // indirect
google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8 // indirect
google.golang.org/grpc v1.14.0
)

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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/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/hashicorp/go-hclog v0.0.0-20180709165350-ff2cf002a8dd h1:rNuUHR+CvK1IS89MMtcF0EpcVMZtjKfPRp4MEmt/aTs=
github.com/hashicorp/go-hclog v0.0.0-20180709165350-ff2cf002a8dd/go.mod h1:9bjs9uLqI8l75knNv3lV1kA55veR+WUPSiKIWcQHudI=
github.com/hashicorp/yamux v0.0.0-20180604194846-3520598351bb h1:b5rjCoWHc7eqmAS4/qyk21ZsHyb6Mxv/jykxvNTkU4M=
github.com/hashicorp/yamux v0.0.0-20180604194846-3520598351bb/go.mod h1:+NfK9FKeTrX5uv1uIXGdwYDTeHna2qgaIlx54MXqjAM=
github.com/mitchellh/go-testing-interface v0.0.0-20171004221916-a61a99592b77 h1:7GoSOOW2jpsfkntVKaS2rAr1TJqfcxotyaUcuxoZSzg=
github.com/mitchellh/go-testing-interface v0.0.0-20171004221916-a61a99592b77/go.mod h1:kRemZodwjscx+RGhAo8eIhFbs2+BFgRtFPeD/KE+zxI=
github.com/oklog/run v1.0.0 h1:Ru7dDtJNOyC66gQ5dQmaCa0qIsAUFY3sFpK1Xk8igrw=
github.com/oklog/run v1.0.0/go.mod h1:dlhp/R75TPv97u0XWUtDeV/lRKWPKSdTuV0TZvrmrQA=
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 v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
golang.org/x/net v0.0.0-20180826012351-8a410e7b638d h1:g9qWBGx4puODJTMVyoPrpoxPFgVGd+z1DZwjfRu4d0I=
golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4 h1:YUO/7uOKsKeq9UokNS62b8FYywz3ker1l1vDZRCRefw=
golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20190129075346-302c3dd5f1cc h1:WiYx1rIFmx8c0mXAFtv5D/mHyKe1+jmuP7PViuwqwuQ=
golang.org/x/sys v0.0.0-20190129075346-302c3dd5f1cc/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8 h1:Nw54tB0rB7hY/N0NQvRW8DG4Yk3Q6T9cu9RcFQDu1tc=
google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
google.golang.org/grpc v1.14.0 h1:ArxJuB1NWfPY6r9Gp9gqwplT0Ge7nqv9msgu03lHLmo=
google.golang.org/grpc v1.14.0/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw=

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package plugin
import (
"context"
"crypto/tls"
"errors"
"fmt"
"log"
"net"
"sync"
"sync/atomic"
"time"
"github.com/hashicorp/go-plugin/internal/plugin"
"github.com/oklog/run"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
)
// streamer interface is used in the broker to send/receive connection
// information.
type streamer interface {
Send(*plugin.ConnInfo) error
Recv() (*plugin.ConnInfo, error)
Close()
}
// sendErr is used to pass errors back during a send.
type sendErr struct {
i *plugin.ConnInfo
ch chan error
}
// gRPCBrokerServer is used by the plugin to start a stream and to send
// connection information to/from the plugin. Implements GRPCBrokerServer and
// streamer interfaces.
type gRPCBrokerServer struct {
// send is used to send connection info to the gRPC stream.
send chan *sendErr
// recv is used to receive connection info from the gRPC stream.
recv chan *plugin.ConnInfo
// quit closes down the stream.
quit chan struct{}
// o is used to ensure we close the quit channel only once.
o sync.Once
}
func newGRPCBrokerServer() *gRPCBrokerServer {
return &gRPCBrokerServer{
send: make(chan *sendErr),
recv: make(chan *plugin.ConnInfo),
quit: make(chan struct{}),
}
}
// StartStream implements the GRPCBrokerServer interface and will block until
// the quit channel is closed or the context reports Done. The stream will pass
// connection information to/from the client.
func (s *gRPCBrokerServer) StartStream(stream plugin.GRPCBroker_StartStreamServer) error {
doneCh := stream.Context().Done()
defer s.Close()
// Proccess send stream
go func() {
for {
select {
case <-doneCh:
return
case <-s.quit:
return
case se := <-s.send:
err := stream.Send(se.i)
se.ch <- err
}
}
}()
// Process receive stream
for {
i, err := stream.Recv()
if err != nil {
return err
}
select {
case <-doneCh:
return nil
case <-s.quit:
return nil
case s.recv <- i:
}
}
return nil
}
// Send is used by the GRPCBroker to pass connection information into the stream
// to the client.
func (s *gRPCBrokerServer) Send(i *plugin.ConnInfo) error {
ch := make(chan error)
defer close(ch)
select {
case <-s.quit:
return errors.New("broker closed")
case s.send <- &sendErr{
i: i,
ch: ch,
}:
}
return <-ch
}
// Recv is used by the GRPCBroker to pass connection information that has been
// sent from the client from the stream to the broker.
func (s *gRPCBrokerServer) Recv() (*plugin.ConnInfo, error) {
select {
case <-s.quit:
return nil, errors.New("broker closed")
case i := <-s.recv:
return i, nil
}
}
// Close closes the quit channel, shutting down the stream.
func (s *gRPCBrokerServer) Close() {
s.o.Do(func() {
close(s.quit)
})
}
// gRPCBrokerClientImpl is used by the client to start a stream and to send
// connection information to/from the client. Implements GRPCBrokerClient and
// streamer interfaces.
type gRPCBrokerClientImpl struct {
// client is the underlying GRPC client used to make calls to the server.
client plugin.GRPCBrokerClient
// send is used to send connection info to the gRPC stream.
send chan *sendErr
// recv is used to receive connection info from the gRPC stream.
recv chan *plugin.ConnInfo
// quit closes down the stream.
quit chan struct{}
// o is used to ensure we close the quit channel only once.
o sync.Once
}
func newGRPCBrokerClient(conn *grpc.ClientConn) *gRPCBrokerClientImpl {
return &gRPCBrokerClientImpl{
client: plugin.NewGRPCBrokerClient(conn),
send: make(chan *sendErr),
recv: make(chan *plugin.ConnInfo),
quit: make(chan struct{}),
}
}
// StartStream implements the GRPCBrokerClient interface and will block until
// the quit channel is closed or the context reports Done. The stream will pass
// connection information to/from the plugin.
func (s *gRPCBrokerClientImpl) StartStream() error {
ctx, cancelFunc := context.WithCancel(context.Background())
defer cancelFunc()
defer s.Close()
stream, err := s.client.StartStream(ctx)
if err != nil {
return err
}
doneCh := stream.Context().Done()
go func() {
for {
select {
case <-doneCh:
return
case <-s.quit:
return
case se := <-s.send:
err := stream.Send(se.i)
se.ch <- err
}
}
}()
for {
i, err := stream.Recv()
if err != nil {
return err
}
select {
case <-doneCh:
return nil
case <-s.quit:
return nil
case s.recv <- i:
}
}
return nil
}
// Send is used by the GRPCBroker to pass connection information into the stream
// to the plugin.
func (s *gRPCBrokerClientImpl) Send(i *plugin.ConnInfo) error {
ch := make(chan error)
defer close(ch)
select {
case <-s.quit:
return errors.New("broker closed")
case s.send <- &sendErr{
i: i,
ch: ch,
}:
}
return <-ch
}
// Recv is used by the GRPCBroker to pass connection information that has been
// sent from the plugin to the broker.
func (s *gRPCBrokerClientImpl) Recv() (*plugin.ConnInfo, error) {
select {
case <-s.quit:
return nil, errors.New("broker closed")
case i := <-s.recv:
return i, nil
}
}
// Close closes the quit channel, shutting down the stream.
func (s *gRPCBrokerClientImpl) Close() {
s.o.Do(func() {
close(s.quit)
})
}
// GRPCBroker is responsible for brokering connections by unique ID.
//
// It is used by plugins to create multiple gRPC connections and data
// streams between the plugin process and the host process.
//
// This allows a plugin to request a channel with a specific ID to connect to
// or accept a connection from, and the broker handles the details of
// holding these channels open while they're being negotiated.
//
// The Plugin interface has access to these for both Server and Client.
// The broker can be used by either (optionally) to reserve and connect to
// new streams. This is useful for complex args and return values,
// or anything else you might need a data stream for.
type GRPCBroker struct {
nextId uint32
streamer streamer
streams map[uint32]*gRPCBrokerPending
tls *tls.Config
doneCh chan struct{}
o sync.Once
sync.Mutex
}
type gRPCBrokerPending struct {
ch chan *plugin.ConnInfo
doneCh chan struct{}
}
func newGRPCBroker(s streamer, tls *tls.Config) *GRPCBroker {
return &GRPCBroker{
streamer: s,
streams: make(map[uint32]*gRPCBrokerPending),
tls: tls,
doneCh: make(chan struct{}),
}
}
// Accept accepts a connection by ID.
//
// This should not be called multiple times with the same ID at one time.
func (b *GRPCBroker) Accept(id uint32) (net.Listener, error) {
listener, err := serverListener()
if err != nil {
return nil, err
}
err = b.streamer.Send(&plugin.ConnInfo{
ServiceId: id,
Network: listener.Addr().Network(),
Address: listener.Addr().String(),
})
if err != nil {
return nil, err
}
return listener, nil
}
// AcceptAndServe is used to accept a specific stream ID and immediately
// serve a gRPC server on that stream ID. This is used to easily serve
// complex arguments. Each AcceptAndServe call opens a new listener socket and
// sends the connection info down the stream to the dialer. Since a new
// connection is opened every call, these calls should be used sparingly.
// Multiple gRPC server implementations can be registered to a single
// AcceptAndServe call.
func (b *GRPCBroker) AcceptAndServe(id uint32, s func([]grpc.ServerOption) *grpc.Server) {
listener, err := b.Accept(id)
if err != nil {
log.Printf("[ERR] plugin: plugin acceptAndServe error: %s", err)
return
}
defer listener.Close()
var opts []grpc.ServerOption
if b.tls != nil {
opts = []grpc.ServerOption{grpc.Creds(credentials.NewTLS(b.tls))}
}
server := s(opts)
// Here we use a run group to close this goroutine if the server is shutdown
// or the broker is shutdown.
var g run.Group
{
// Serve on the listener, if shutting down call GracefulStop.
g.Add(func() error {
return server.Serve(listener)
}, func(err error) {
server.GracefulStop()
})
}
{
// block on the closeCh or the doneCh. If we are shutting down close the
// closeCh.
closeCh := make(chan struct{})
g.Add(func() error {
select {
case <-b.doneCh:
case <-closeCh:
}
return nil
}, func(err error) {
close(closeCh)
})
}
// Block until we are done
g.Run()
}
// Close closes the stream and all servers.
func (b *GRPCBroker) Close() error {
b.streamer.Close()
b.o.Do(func() {
close(b.doneCh)
})
return nil
}
// Dial opens a connection by ID.
func (b *GRPCBroker) Dial(id uint32) (conn *grpc.ClientConn, err error) {
var c *plugin.ConnInfo
// Open the stream
p := b.getStream(id)
select {
case c = <-p.ch:
close(p.doneCh)
case <-time.After(5 * time.Second):
return nil, fmt.Errorf("timeout waiting for connection info")
}
var addr net.Addr
switch c.Network {
case "tcp":
addr, err = net.ResolveTCPAddr("tcp", c.Address)
case "unix":
addr, err = net.ResolveUnixAddr("unix", c.Address)
default:
err = fmt.Errorf("Unknown address type: %s", c.Address)
}
if err != nil {
return nil, err
}
return dialGRPCConn(b.tls, netAddrDialer(addr))
}
// NextId returns a unique ID to use next.
//
// It is possible for very long-running plugin hosts to wrap this value,
// though it would require a very large amount of calls. In practice
// we've never seen it happen.
func (m *GRPCBroker) NextId() uint32 {
return atomic.AddUint32(&m.nextId, 1)
}
// Run starts the brokering and should be executed in a goroutine, since it
// blocks forever, or until the session closes.
//
// Uses of GRPCBroker never need to call this. It is called internally by
// the plugin host/client.
func (m *GRPCBroker) Run() {
for {
stream, err := m.streamer.Recv()
if err != nil {
// Once we receive an error, just exit
break
}
// Initialize the waiter
p := m.getStream(stream.ServiceId)
select {
case p.ch <- stream:
default:
}
go m.timeoutWait(stream.ServiceId, p)
}
}
func (m *GRPCBroker) getStream(id uint32) *gRPCBrokerPending {
m.Lock()
defer m.Unlock()
p, ok := m.streams[id]
if ok {
return p
}
m.streams[id] = &gRPCBrokerPending{
ch: make(chan *plugin.ConnInfo, 1),
doneCh: make(chan struct{}),
}
return m.streams[id]
}
func (m *GRPCBroker) timeoutWait(id uint32, p *gRPCBrokerPending) {
// Wait for the stream to either be picked up and connected, or
// for a timeout.
select {
case <-p.doneCh:
case <-time.After(5 * time.Second):
}
m.Lock()
defer m.Unlock()
// Delete the stream so no one else can grab it
delete(m.streams, id)
}

117
vendor/github.com/hashicorp/go-plugin/grpc_client.go generated vendored Normal file
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@ -0,0 +1,117 @@
package plugin
import (
"crypto/tls"
"fmt"
"math"
"net"
"time"
"github.com/hashicorp/go-plugin/internal/plugin"
"golang.org/x/net/context"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/health/grpc_health_v1"
)
func dialGRPCConn(tls *tls.Config, dialer func(string, time.Duration) (net.Conn, error)) (*grpc.ClientConn, error) {
// Build dialing options.
opts := make([]grpc.DialOption, 0, 5)
// We use a custom dialer so that we can connect over unix domain sockets.
opts = append(opts, grpc.WithDialer(dialer))
// Fail right away
opts = append(opts, grpc.FailOnNonTempDialError(true))
// If we have no TLS configuration set, we need to explicitly tell grpc
// that we're connecting with an insecure connection.
if tls == nil {
opts = append(opts, grpc.WithInsecure())
} else {
opts = append(opts, grpc.WithTransportCredentials(
credentials.NewTLS(tls)))
}
opts = append(opts,
grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(math.MaxInt32)),
grpc.WithDefaultCallOptions(grpc.MaxCallSendMsgSize(math.MaxInt32)))
// Connect. Note the first parameter is unused because we use a custom
// dialer that has the state to see the address.
conn, err := grpc.Dial("unused", opts...)
if err != nil {
return nil, err
}
return conn, nil
}
// newGRPCClient creates a new GRPCClient. The Client argument is expected
// to be successfully started already with a lock held.
func newGRPCClient(doneCtx context.Context, c *Client) (*GRPCClient, error) {
conn, err := dialGRPCConn(c.config.TLSConfig, c.dialer)
if err != nil {
return nil, err
}
// Start the broker.
brokerGRPCClient := newGRPCBrokerClient(conn)
broker := newGRPCBroker(brokerGRPCClient, c.config.TLSConfig)
go broker.Run()
go brokerGRPCClient.StartStream()
cl := &GRPCClient{
Conn: conn,
Plugins: c.config.Plugins,
doneCtx: doneCtx,
broker: broker,
controller: plugin.NewGRPCControllerClient(conn),
}
return cl, nil
}
// GRPCClient connects to a GRPCServer over gRPC to dispense plugin types.
type GRPCClient struct {
Conn *grpc.ClientConn
Plugins map[string]Plugin
doneCtx context.Context
broker *GRPCBroker
controller plugin.GRPCControllerClient
}
// ClientProtocol impl.
func (c *GRPCClient) Close() error {
c.broker.Close()
c.controller.Shutdown(c.doneCtx, &plugin.Empty{})
return c.Conn.Close()
}
// ClientProtocol impl.
func (c *GRPCClient) Dispense(name string) (interface{}, error) {
raw, ok := c.Plugins[name]
if !ok {
return nil, fmt.Errorf("unknown plugin type: %s", name)
}
p, ok := raw.(GRPCPlugin)
if !ok {
return nil, fmt.Errorf("plugin %q doesn't support gRPC", name)
}
return p.GRPCClient(c.doneCtx, c.broker, c.Conn)
}
// ClientProtocol impl.
func (c *GRPCClient) Ping() error {
client := grpc_health_v1.NewHealthClient(c.Conn)
_, err := client.Check(context.Background(), &grpc_health_v1.HealthCheckRequest{
Service: GRPCServiceName,
})
return err
}

23
vendor/github.com/hashicorp/go-plugin/grpc_controller.go generated vendored Normal file
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@ -0,0 +1,23 @@
package plugin
import (
"context"
"github.com/hashicorp/go-plugin/internal/plugin"
)
// GRPCControllerServer handles shutdown calls to terminate the server when the
// plugin client is closed.
type grpcControllerServer struct {
server *GRPCServer
}
// Shutdown stops the grpc server. It first will attempt a graceful stop, then a
// full stop on the server.
func (s *grpcControllerServer) Shutdown(ctx context.Context, _ *plugin.Empty) (*plugin.Empty, error) {
resp := &plugin.Empty{}
// TODO: figure out why GracefullStop doesn't work.
s.server.Stop()
return resp, nil
}

142
vendor/github.com/hashicorp/go-plugin/grpc_server.go generated vendored Normal file
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@ -0,0 +1,142 @@
package plugin
import (
"bytes"
"crypto/tls"
"encoding/json"
"fmt"
"io"
"net"
hclog "github.com/hashicorp/go-hclog"
"github.com/hashicorp/go-plugin/internal/plugin"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/health"
"google.golang.org/grpc/health/grpc_health_v1"
)
// GRPCServiceName is the name of the service that the health check should
// return as passing.
const GRPCServiceName = "plugin"
// DefaultGRPCServer can be used with the "GRPCServer" field for Server
// as a default factory method to create a gRPC server with no extra options.
func DefaultGRPCServer(opts []grpc.ServerOption) *grpc.Server {
return grpc.NewServer(opts...)
}
// GRPCServer is a ServerType implementation that serves plugins over
// gRPC. This allows plugins to easily be written for other languages.
//
// The GRPCServer outputs a custom configuration as a base64-encoded
// JSON structure represented by the GRPCServerConfig config structure.
type GRPCServer struct {
// Plugins are the list of plugins to serve.
Plugins map[string]Plugin
// Server is the actual server that will accept connections. This
// will be used for plugin registration as well.
Server func([]grpc.ServerOption) *grpc.Server
// TLS should be the TLS configuration if available. If this is nil,
// the connection will not have transport security.
TLS *tls.Config
// DoneCh is the channel that is closed when this server has exited.
DoneCh chan struct{}
// Stdout/StderrLis are the readers for stdout/stderr that will be copied
// to the stdout/stderr connection that is output.
Stdout io.Reader
Stderr io.Reader
config GRPCServerConfig
server *grpc.Server
broker *GRPCBroker
logger hclog.Logger
}
// ServerProtocol impl.
func (s *GRPCServer) Init() error {
// Create our server
var opts []grpc.ServerOption
if s.TLS != nil {
opts = append(opts, grpc.Creds(credentials.NewTLS(s.TLS)))
}
s.server = s.Server(opts)
// Register the health service
healthCheck := health.NewServer()
healthCheck.SetServingStatus(
GRPCServiceName, grpc_health_v1.HealthCheckResponse_SERVING)
grpc_health_v1.RegisterHealthServer(s.server, healthCheck)
// Register the broker service
brokerServer := newGRPCBrokerServer()
plugin.RegisterGRPCBrokerServer(s.server, brokerServer)
s.broker = newGRPCBroker(brokerServer, s.TLS)
go s.broker.Run()
// Register the controller
controllerServer := &grpcControllerServer{
server: s,
}
plugin.RegisterGRPCControllerServer(s.server, controllerServer)
// Register all our plugins onto the gRPC server.
for k, raw := range s.Plugins {
p, ok := raw.(GRPCPlugin)
if !ok {
return fmt.Errorf("%q is not a GRPC-compatible plugin", k)
}
if err := p.GRPCServer(s.broker, s.server); err != nil {
return fmt.Errorf("error registering %q: %s", k, err)
}
}
return nil
}
// Stop calls Stop on the underlying grpc.Server
func (s *GRPCServer) Stop() {
s.server.Stop()
}
// GracefulStop calls GracefulStop on the underlying grpc.Server
func (s *GRPCServer) GracefulStop() {
s.server.GracefulStop()
}
// Config is the GRPCServerConfig encoded as JSON then base64.
func (s *GRPCServer) Config() string {
// Create a buffer that will contain our final contents
var buf bytes.Buffer
// Wrap the base64 encoding with JSON encoding.
if err := json.NewEncoder(&buf).Encode(s.config); err != nil {
// We panic since ths shouldn't happen under any scenario. We
// carefully control the structure being encoded here and it should
// always be successful.
panic(err)
}
return buf.String()
}
func (s *GRPCServer) Serve(lis net.Listener) {
defer close(s.DoneCh)
err := s.server.Serve(lis)
if err != nil {
s.logger.Error("grpc server", "error", err)
}
}
// GRPCServerConfig is the extra configuration passed along for consumers
// to facilitate using GRPC plugins.
type GRPCServerConfig struct {
StdoutAddr string `json:"stdout_addr"`
StderrAddr string `json:"stderr_addr"`
}

3
vendor/github.com/hashicorp/go-plugin/internal/plugin/gen.go generated vendored Normal file
View File

@ -0,0 +1,3 @@
//go:generate protoc -I ./ ./grpc_broker.proto ./grpc_controller.proto --go_out=plugins=grpc:.
package plugin

203
vendor/github.com/hashicorp/go-plugin/internal/plugin/grpc_broker.pb.go generated vendored Normal file
View File

@ -0,0 +1,203 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// source: grpc_broker.proto
package plugin
import (
fmt "fmt"
proto "github.com/golang/protobuf/proto"
context "golang.org/x/net/context"
grpc "google.golang.org/grpc"
math "math"
)
// Reference imports to suppress errors if they are not otherwise used.
var _ = proto.Marshal
var _ = fmt.Errorf
var _ = math.Inf
// This is a compile-time assertion to ensure that this generated file
// is compatible with the proto package it is being compiled against.
// A compilation error at this line likely means your copy of the
// proto package needs to be updated.
const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
type ConnInfo struct {
ServiceId uint32 `protobuf:"varint,1,opt,name=service_id,json=serviceId,proto3" json:"service_id,omitempty"`
Network string `protobuf:"bytes,2,opt,name=network,proto3" json:"network,omitempty"`
Address string `protobuf:"bytes,3,opt,name=address,proto3" json:"address,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *ConnInfo) Reset() { *m = ConnInfo{} }
func (m *ConnInfo) String() string { return proto.CompactTextString(m) }
func (*ConnInfo) ProtoMessage() {}
func (*ConnInfo) Descriptor() ([]byte, []int) {
return fileDescriptor_802e9beed3ec3b28, []int{0}
}
func (m *ConnInfo) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_ConnInfo.Unmarshal(m, b)
}
func (m *ConnInfo) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_ConnInfo.Marshal(b, m, deterministic)
}
func (m *ConnInfo) XXX_Merge(src proto.Message) {
xxx_messageInfo_ConnInfo.Merge(m, src)
}
func (m *ConnInfo) XXX_Size() int {
return xxx_messageInfo_ConnInfo.Size(m)
}
func (m *ConnInfo) XXX_DiscardUnknown() {
xxx_messageInfo_ConnInfo.DiscardUnknown(m)
}
var xxx_messageInfo_ConnInfo proto.InternalMessageInfo
func (m *ConnInfo) GetServiceId() uint32 {
if m != nil {
return m.ServiceId
}
return 0
}
func (m *ConnInfo) GetNetwork() string {
if m != nil {
return m.Network
}
return ""
}
func (m *ConnInfo) GetAddress() string {
if m != nil {
return m.Address
}
return ""
}
func init() {
proto.RegisterType((*ConnInfo)(nil), "plugin.ConnInfo")
}
func init() { proto.RegisterFile("grpc_broker.proto", fileDescriptor_802e9beed3ec3b28) }
var fileDescriptor_802e9beed3ec3b28 = []byte{
// 175 bytes of a gzipped FileDescriptorProto
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x12, 0x4c, 0x2f, 0x2a, 0x48,
0x8e, 0x4f, 0x2a, 0xca, 0xcf, 0x4e, 0x2d, 0xd2, 0x2b, 0x28, 0xca, 0x2f, 0xc9, 0x17, 0x62, 0x2b,
0xc8, 0x29, 0x4d, 0xcf, 0xcc, 0x53, 0x8a, 0xe5, 0xe2, 0x70, 0xce, 0xcf, 0xcb, 0xf3, 0xcc, 0x4b,
0xcb, 0x17, 0x92, 0xe5, 0xe2, 0x2a, 0x4e, 0x2d, 0x2a, 0xcb, 0x4c, 0x4e, 0x8d, 0xcf, 0x4c, 0x91,
0x60, 0x54, 0x60, 0xd4, 0xe0, 0x0d, 0xe2, 0x84, 0x8a, 0x78, 0xa6, 0x08, 0x49, 0x70, 0xb1, 0xe7,
0xa5, 0x96, 0x94, 0xe7, 0x17, 0x65, 0x4b, 0x30, 0x29, 0x30, 0x6a, 0x70, 0x06, 0xc1, 0xb8, 0x20,
0x99, 0xc4, 0x94, 0x94, 0xa2, 0xd4, 0xe2, 0x62, 0x09, 0x66, 0x88, 0x0c, 0x94, 0x6b, 0xe4, 0xcc,
0xc5, 0xe5, 0x1e, 0x14, 0xe0, 0xec, 0x04, 0xb6, 0x5a, 0xc8, 0x94, 0x8b, 0x3b, 0xb8, 0x24, 0xb1,
0xa8, 0x24, 0xb8, 0xa4, 0x28, 0x35, 0x31, 0x57, 0x48, 0x40, 0x0f, 0xe2, 0x08, 0x3d, 0x98, 0x0b,
0xa4, 0x30, 0x44, 0x34, 0x18, 0x0d, 0x18, 0x9d, 0x38, 0xa2, 0xa0, 0xae, 0x4d, 0x62, 0x03, 0x3b,
0xde, 0x18, 0x10, 0x00, 0x00, 0xff, 0xff, 0x10, 0x15, 0x39, 0x47, 0xd1, 0x00, 0x00, 0x00,
}
// Reference imports to suppress errors if they are not otherwise used.
var _ context.Context
var _ grpc.ClientConn
// This is a compile-time assertion to ensure that this generated file
// is compatible with the grpc package it is being compiled against.
const _ = grpc.SupportPackageIsVersion4
// GRPCBrokerClient is the client API for GRPCBroker service.
//
// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
type GRPCBrokerClient interface {
StartStream(ctx context.Context, opts ...grpc.CallOption) (GRPCBroker_StartStreamClient, error)
}
type gRPCBrokerClient struct {
cc *grpc.ClientConn
}
func NewGRPCBrokerClient(cc *grpc.ClientConn) GRPCBrokerClient {
return &gRPCBrokerClient{cc}
}
func (c *gRPCBrokerClient) StartStream(ctx context.Context, opts ...grpc.CallOption) (GRPCBroker_StartStreamClient, error) {
stream, err := c.cc.NewStream(ctx, &_GRPCBroker_serviceDesc.Streams[0], "/plugin.GRPCBroker/StartStream", opts...)
if err != nil {
return nil, err
}
x := &gRPCBrokerStartStreamClient{stream}
return x, nil
}
type GRPCBroker_StartStreamClient interface {
Send(*ConnInfo) error
Recv() (*ConnInfo, error)
grpc.ClientStream
}
type gRPCBrokerStartStreamClient struct {
grpc.ClientStream
}
func (x *gRPCBrokerStartStreamClient) Send(m *ConnInfo) error {
return x.ClientStream.SendMsg(m)
}
func (x *gRPCBrokerStartStreamClient) Recv() (*ConnInfo, error) {
m := new(ConnInfo)
if err := x.ClientStream.RecvMsg(m); err != nil {
return nil, err
}
return m, nil
}
// GRPCBrokerServer is the server API for GRPCBroker service.
type GRPCBrokerServer interface {
StartStream(GRPCBroker_StartStreamServer) error
}
func RegisterGRPCBrokerServer(s *grpc.Server, srv GRPCBrokerServer) {
s.RegisterService(&_GRPCBroker_serviceDesc, srv)
}
func _GRPCBroker_StartStream_Handler(srv interface{}, stream grpc.ServerStream) error {
return srv.(GRPCBrokerServer).StartStream(&gRPCBrokerStartStreamServer{stream})
}
type GRPCBroker_StartStreamServer interface {
Send(*ConnInfo) error
Recv() (*ConnInfo, error)
grpc.ServerStream
}
type gRPCBrokerStartStreamServer struct {
grpc.ServerStream
}
func (x *gRPCBrokerStartStreamServer) Send(m *ConnInfo) error {
return x.ServerStream.SendMsg(m)
}
func (x *gRPCBrokerStartStreamServer) Recv() (*ConnInfo, error) {
m := new(ConnInfo)
if err := x.ServerStream.RecvMsg(m); err != nil {
return nil, err
}
return m, nil
}
var _GRPCBroker_serviceDesc = grpc.ServiceDesc{
ServiceName: "plugin.GRPCBroker",
HandlerType: (*GRPCBrokerServer)(nil),
Methods: []grpc.MethodDesc{},
Streams: []grpc.StreamDesc{
{
StreamName: "StartStream",
Handler: _GRPCBroker_StartStream_Handler,
ServerStreams: true,
ClientStreams: true,
},
},
Metadata: "grpc_broker.proto",
}

15
vendor/github.com/hashicorp/go-plugin/internal/plugin/grpc_broker.proto generated vendored Normal file
View File

@ -0,0 +1,15 @@
syntax = "proto3";
package plugin;
option go_package = "plugin";
message ConnInfo {
uint32 service_id = 1;
string network = 2;
string address = 3;
}
service GRPCBroker {
rpc StartStream(stream ConnInfo) returns (stream ConnInfo);
}

143
vendor/github.com/hashicorp/go-plugin/internal/plugin/grpc_controller.pb.go generated vendored Normal file
View File

@ -0,0 +1,143 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// source: grpc_controller.proto
package plugin
import (
fmt "fmt"
proto "github.com/golang/protobuf/proto"
context "golang.org/x/net/context"
grpc "google.golang.org/grpc"
math "math"
)
// Reference imports to suppress errors if they are not otherwise used.
var _ = proto.Marshal
var _ = fmt.Errorf
var _ = math.Inf
// This is a compile-time assertion to ensure that this generated file
// is compatible with the proto package it is being compiled against.
// A compilation error at this line likely means your copy of the
// proto package needs to be updated.
const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
type Empty struct {
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *Empty) Reset() { *m = Empty{} }
func (m *Empty) String() string { return proto.CompactTextString(m) }
func (*Empty) ProtoMessage() {}
func (*Empty) Descriptor() ([]byte, []int) {
return fileDescriptor_23c2c7e42feab570, []int{0}
}
func (m *Empty) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Empty.Unmarshal(m, b)
}
func (m *Empty) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Empty.Marshal(b, m, deterministic)
}
func (m *Empty) XXX_Merge(src proto.Message) {
xxx_messageInfo_Empty.Merge(m, src)
}
func (m *Empty) XXX_Size() int {
return xxx_messageInfo_Empty.Size(m)
}
func (m *Empty) XXX_DiscardUnknown() {
xxx_messageInfo_Empty.DiscardUnknown(m)
}
var xxx_messageInfo_Empty proto.InternalMessageInfo
func init() {
proto.RegisterType((*Empty)(nil), "plugin.Empty")
}
func init() { proto.RegisterFile("grpc_controller.proto", fileDescriptor_23c2c7e42feab570) }
var fileDescriptor_23c2c7e42feab570 = []byte{
// 108 bytes of a gzipped FileDescriptorProto
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x12, 0x4d, 0x2f, 0x2a, 0x48,
0x8e, 0x4f, 0xce, 0xcf, 0x2b, 0x29, 0xca, 0xcf, 0xc9, 0x49, 0x2d, 0xd2, 0x2b, 0x28, 0xca, 0x2f,
0xc9, 0x17, 0x62, 0x2b, 0xc8, 0x29, 0x4d, 0xcf, 0xcc, 0x53, 0x62, 0xe7, 0x62, 0x75, 0xcd, 0x2d,
0x28, 0xa9, 0x34, 0xb2, 0xe2, 0xe2, 0x73, 0x0f, 0x0a, 0x70, 0x76, 0x86, 0x2b, 0x14, 0xd2, 0xe0,
0xe2, 0x08, 0xce, 0x28, 0x2d, 0x49, 0xc9, 0x2f, 0xcf, 0x13, 0xe2, 0xd5, 0x83, 0xa8, 0xd7, 0x03,
0x2b, 0x96, 0x42, 0xe5, 0x3a, 0x71, 0x44, 0x41, 0x8d, 0x4b, 0x62, 0x03, 0x9b, 0x6e, 0x0c, 0x08,
0x00, 0x00, 0xff, 0xff, 0xab, 0x7c, 0x27, 0xe5, 0x76, 0x00, 0x00, 0x00,
}
// Reference imports to suppress errors if they are not otherwise used.
var _ context.Context
var _ grpc.ClientConn
// This is a compile-time assertion to ensure that this generated file
// is compatible with the grpc package it is being compiled against.
const _ = grpc.SupportPackageIsVersion4
// GRPCControllerClient is the client API for GRPCController service.
//
// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
type GRPCControllerClient interface {
Shutdown(ctx context.Context, in *Empty, opts ...grpc.CallOption) (*Empty, error)
}
type gRPCControllerClient struct {
cc *grpc.ClientConn
}
func NewGRPCControllerClient(cc *grpc.ClientConn) GRPCControllerClient {
return &gRPCControllerClient{cc}
}
func (c *gRPCControllerClient) Shutdown(ctx context.Context, in *Empty, opts ...grpc.CallOption) (*Empty, error) {
out := new(Empty)
err := c.cc.Invoke(ctx, "/plugin.GRPCController/Shutdown", in, out, opts...)
if err != nil {
return nil, err
}
return out, nil
}
// GRPCControllerServer is the server API for GRPCController service.
type GRPCControllerServer interface {
Shutdown(context.Context, *Empty) (*Empty, error)
}
func RegisterGRPCControllerServer(s *grpc.Server, srv GRPCControllerServer) {
s.RegisterService(&_GRPCController_serviceDesc, srv)
}
func _GRPCController_Shutdown_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(Empty)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(GRPCControllerServer).Shutdown(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/plugin.GRPCController/Shutdown",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(GRPCControllerServer).Shutdown(ctx, req.(*Empty))
}
return interceptor(ctx, in, info, handler)
}
var _GRPCController_serviceDesc = grpc.ServiceDesc{
ServiceName: "plugin.GRPCController",
HandlerType: (*GRPCControllerServer)(nil),
Methods: []grpc.MethodDesc{
{
MethodName: "Shutdown",
Handler: _GRPCController_Shutdown_Handler,
},
},
Streams: []grpc.StreamDesc{},
Metadata: "grpc_controller.proto",
}

11
vendor/github.com/hashicorp/go-plugin/internal/plugin/grpc_controller.proto generated vendored Normal file
View File

@ -0,0 +1,11 @@
syntax = "proto3";
package plugin;
option go_package = "plugin";
message Empty {
}
// The GRPCController is responsible for telling the plugin server to shutdown.
service GRPCController {
rpc Shutdown(Empty) returns (Empty);
}

73
vendor/github.com/hashicorp/go-plugin/log_entry.go generated vendored Normal file
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package plugin
import (
"encoding/json"
"time"
)
// logEntry is the JSON payload that gets sent to Stderr from the plugin to the host
type logEntry struct {
Message string `json:"@message"`
Level string `json:"@level"`
Timestamp time.Time `json:"timestamp"`
KVPairs []*logEntryKV `json:"kv_pairs"`
}
// logEntryKV is a key value pair within the Output payload
type logEntryKV struct {
Key string `json:"key"`
Value interface{} `json:"value"`
}
// flattenKVPairs is used to flatten KVPair slice into []interface{}
// for hclog consumption.
func flattenKVPairs(kvs []*logEntryKV) []interface{} {
var result []interface{}
for _, kv := range kvs {
result = append(result, kv.Key)
result = append(result, kv.Value)
}
return result
}
// parseJSON handles parsing JSON output
func parseJSON(input []byte) (*logEntry, error) {
var raw map[string]interface{}
entry := &logEntry{}
err := json.Unmarshal(input, &raw)
if err != nil {
return nil, err
}
// Parse hclog-specific objects
if v, ok := raw["@message"]; ok {
entry.Message = v.(string)
delete(raw, "@message")
}
if v, ok := raw["@level"]; ok {
entry.Level = v.(string)
delete(raw, "@level")
}
if v, ok := raw["@timestamp"]; ok {
t, err := time.Parse("2006-01-02T15:04:05.000000Z07:00", v.(string))
if err != nil {
return nil, err
}
entry.Timestamp = t
delete(raw, "@timestamp")
}
// Parse dynamic KV args from the hclog payload.
for k, v := range raw {
entry.KVPairs = append(entry.KVPairs, &logEntryKV{
Key: k,
Value: v,
})
}
return entry, nil
}

73
vendor/github.com/hashicorp/go-plugin/mtls.go generated vendored Normal file
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package plugin
import (
"bytes"
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"crypto/x509"
"crypto/x509/pkix"
"encoding/pem"
"math/big"
"time"
)
// generateCert generates a temporary certificate for plugin authentication. The
// certificate and private key are returns in PEM format.
func generateCert() (cert []byte, privateKey []byte, err error) {
key, err := ecdsa.GenerateKey(elliptic.P521(), rand.Reader)
if err != nil {
return nil, nil, err
}
serialNumberLimit := new(big.Int).Lsh(big.NewInt(1), 128)
sn, err := rand.Int(rand.Reader, serialNumberLimit)
if err != nil {
return nil, nil, err
}
host := "localhost"
template := &x509.Certificate{
Subject: pkix.Name{
CommonName: host,
Organization: []string{"HashiCorp"},
},
DNSNames: []string{host},
ExtKeyUsage: []x509.ExtKeyUsage{
x509.ExtKeyUsageClientAuth,
x509.ExtKeyUsageServerAuth,
},
KeyUsage: x509.KeyUsageDigitalSignature | x509.KeyUsageKeyEncipherment | x509.KeyUsageKeyAgreement | x509.KeyUsageCertSign,
BasicConstraintsValid: true,
SerialNumber: sn,
NotBefore: time.Now().Add(-30 * time.Second),
NotAfter: time.Now().Add(262980 * time.Hour),
IsCA: true,
}
der, err := x509.CreateCertificate(rand.Reader, template, template, key.Public(), key)
if err != nil {
return nil, nil, err
}
var certOut bytes.Buffer
if err := pem.Encode(&certOut, &pem.Block{Type: "CERTIFICATE", Bytes: der}); err != nil {
return nil, nil, err
}
keyBytes, err := x509.MarshalECPrivateKey(key)
if err != nil {
return nil, nil, err
}
var keyOut bytes.Buffer
if err := pem.Encode(&keyOut, &pem.Block{Type: "EC PRIVATE KEY", Bytes: keyBytes}); err != nil {
return nil, nil, err
}
cert = certOut.Bytes()
privateKey = keyOut.Bytes()
return cert, privateKey, nil
}

204
vendor/github.com/hashicorp/go-plugin/mux_broker.go generated vendored Normal file
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package plugin
import (
"encoding/binary"
"fmt"
"log"
"net"
"sync"
"sync/atomic"
"time"
"github.com/hashicorp/yamux"
)
// MuxBroker is responsible for brokering multiplexed connections by unique ID.
//
// It is used by plugins to multiplex multiple RPC connections and data
// streams on top of a single connection between the plugin process and the
// host process.
//
// This allows a plugin to request a channel with a specific ID to connect to
// or accept a connection from, and the broker handles the details of
// holding these channels open while they're being negotiated.
//
// The Plugin interface has access to these for both Server and Client.
// The broker can be used by either (optionally) to reserve and connect to
// new multiplexed streams. This is useful for complex args and return values,
// or anything else you might need a data stream for.
type MuxBroker struct {
nextId uint32
session *yamux.Session
streams map[uint32]*muxBrokerPending
sync.Mutex
}
type muxBrokerPending struct {
ch chan net.Conn
doneCh chan struct{}
}
func newMuxBroker(s *yamux.Session) *MuxBroker {
return &MuxBroker{
session: s,
streams: make(map[uint32]*muxBrokerPending),
}
}
// Accept accepts a connection by ID.
//
// This should not be called multiple times with the same ID at one time.
func (m *MuxBroker) Accept(id uint32) (net.Conn, error) {
var c net.Conn
p := m.getStream(id)
select {
case c = <-p.ch:
close(p.doneCh)
case <-time.After(5 * time.Second):
m.Lock()
defer m.Unlock()
delete(m.streams, id)
return nil, fmt.Errorf("timeout waiting for accept")
}
// Ack our connection
if err := binary.Write(c, binary.LittleEndian, id); err != nil {
c.Close()
return nil, err
}
return c, nil
}
// AcceptAndServe is used to accept a specific stream ID and immediately
// serve an RPC server on that stream ID. This is used to easily serve
// complex arguments.
//
// The served interface is always registered to the "Plugin" name.
func (m *MuxBroker) AcceptAndServe(id uint32, v interface{}) {
conn, err := m.Accept(id)
if err != nil {
log.Printf("[ERR] plugin: plugin acceptAndServe error: %s", err)
return
}
serve(conn, "Plugin", v)
}
// Close closes the connection and all sub-connections.
func (m *MuxBroker) Close() error {
return m.session.Close()
}
// Dial opens a connection by ID.
func (m *MuxBroker) Dial(id uint32) (net.Conn, error) {
// Open the stream
stream, err := m.session.OpenStream()
if err != nil {
return nil, err
}
// Write the stream ID onto the wire.
if err := binary.Write(stream, binary.LittleEndian, id); err != nil {
stream.Close()
return nil, err
}
// Read the ack that we connected. Then we're off!
var ack uint32
if err := binary.Read(stream, binary.LittleEndian, &ack); err != nil {
stream.Close()
return nil, err
}
if ack != id {
stream.Close()
return nil, fmt.Errorf("bad ack: %d (expected %d)", ack, id)
}
return stream, nil
}
// NextId returns a unique ID to use next.
//
// It is possible for very long-running plugin hosts to wrap this value,
// though it would require a very large amount of RPC calls. In practice
// we've never seen it happen.
func (m *MuxBroker) NextId() uint32 {
return atomic.AddUint32(&m.nextId, 1)
}
// Run starts the brokering and should be executed in a goroutine, since it
// blocks forever, or until the session closes.
//
// Uses of MuxBroker never need to call this. It is called internally by
// the plugin host/client.
func (m *MuxBroker) Run() {
for {
stream, err := m.session.AcceptStream()
if err != nil {
// Once we receive an error, just exit
break
}
// Read the stream ID from the stream
var id uint32
if err := binary.Read(stream, binary.LittleEndian, &id); err != nil {
stream.Close()
continue
}
// Initialize the waiter
p := m.getStream(id)
select {
case p.ch <- stream:
default:
}
// Wait for a timeout
go m.timeoutWait(id, p)
}
}
func (m *MuxBroker) getStream(id uint32) *muxBrokerPending {
m.Lock()
defer m.Unlock()
p, ok := m.streams[id]
if ok {
return p
}
m.streams[id] = &muxBrokerPending{
ch: make(chan net.Conn, 1),
doneCh: make(chan struct{}),
}
return m.streams[id]
}
func (m *MuxBroker) timeoutWait(id uint32, p *muxBrokerPending) {
// Wait for the stream to either be picked up and connected, or
// for a timeout.
timeout := false
select {
case <-p.doneCh:
case <-time.After(5 * time.Second):
timeout = true
}
m.Lock()
defer m.Unlock()
// Delete the stream so no one else can grab it
delete(m.streams, id)
// If we timed out, then check if we have a channel in the buffer,
// and if so, close it.
if timeout {
select {
case s := <-p.ch:
s.Close()
}
}
}

58
vendor/github.com/hashicorp/go-plugin/plugin.go generated vendored Normal file
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// The plugin package exposes functions and helpers for communicating to
// plugins which are implemented as standalone binary applications.
//
// plugin.Client fully manages the lifecycle of executing the application,
// connecting to it, and returning the RPC client for dispensing plugins.
//
// plugin.Serve fully manages listeners to expose an RPC server from a binary
// that plugin.Client can connect to.
package plugin
import (
"context"
"errors"
"net/rpc"
"google.golang.org/grpc"
)
// Plugin is the interface that is implemented to serve/connect to an
// inteface implementation.
type Plugin interface {
// Server should return the RPC server compatible struct to serve
// the methods that the Client calls over net/rpc.
Server(*MuxBroker) (interface{}, error)
// Client returns an interface implementation for the plugin you're
// serving that communicates to the server end of the plugin.
Client(*MuxBroker, *rpc.Client) (interface{}, error)
}
// GRPCPlugin is the interface that is implemented to serve/connect to
// a plugin over gRPC.
type GRPCPlugin interface {
// GRPCServer should register this plugin for serving with the
// given GRPCServer. Unlike Plugin.Server, this is only called once
// since gRPC plugins serve singletons.
GRPCServer(*GRPCBroker, *grpc.Server) error
// GRPCClient should return the interface implementation for the plugin
// you're serving via gRPC. The provided context will be canceled by
// go-plugin in the event of the plugin process exiting.
GRPCClient(context.Context, *GRPCBroker, *grpc.ClientConn) (interface{}, error)
}
// NetRPCUnsupportedPlugin implements Plugin but returns errors for the
// Server and Client functions. This will effectively disable support for
// net/rpc based plugins.
//
// This struct can be embedded in your struct.
type NetRPCUnsupportedPlugin struct{}
func (p NetRPCUnsupportedPlugin) Server(*MuxBroker) (interface{}, error) {
return nil, errors.New("net/rpc plugin protocol not supported")
}
func (p NetRPCUnsupportedPlugin) Client(*MuxBroker, *rpc.Client) (interface{}, error) {
return nil, errors.New("net/rpc plugin protocol not supported")
}

24
vendor/github.com/hashicorp/go-plugin/process.go generated vendored Normal file
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package plugin
import (
"time"
)
// pidAlive checks whether a pid is alive.
func pidAlive(pid int) bool {
return _pidAlive(pid)
}
// pidWait blocks for a process to exit.
func pidWait(pid int) error {
ticker := time.NewTicker(1 * time.Second)
defer ticker.Stop()
for range ticker.C {
if !pidAlive(pid) {
break
}
}
return nil
}

19
vendor/github.com/hashicorp/go-plugin/process_posix.go generated vendored Normal file
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// +build !windows
package plugin
import (
"os"
"syscall"
)
// _pidAlive tests whether a process is alive or not by sending it Signal 0,
// since Go otherwise has no way to test this.
func _pidAlive(pid int) bool {
proc, err := os.FindProcess(pid)
if err == nil {
err = proc.Signal(syscall.Signal(0))
}
return err == nil
}

29
vendor/github.com/hashicorp/go-plugin/process_windows.go generated vendored Normal file
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package plugin
import (
"syscall"
)
const (
// Weird name but matches the MSDN docs
exit_STILL_ACTIVE = 259
processDesiredAccess = syscall.STANDARD_RIGHTS_READ |
syscall.PROCESS_QUERY_INFORMATION |
syscall.SYNCHRONIZE
)
// _pidAlive tests whether a process is alive or not
func _pidAlive(pid int) bool {
h, err := syscall.OpenProcess(processDesiredAccess, false, uint32(pid))
if err != nil {
return false
}
var ec uint32
if e := syscall.GetExitCodeProcess(h, &ec); e != nil {
return false
}
return ec == exit_STILL_ACTIVE
}

45
vendor/github.com/hashicorp/go-plugin/protocol.go generated vendored Normal file
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package plugin
import (
"io"
"net"
)
// Protocol is an enum representing the types of protocols.
type Protocol string
const (
ProtocolInvalid Protocol = ""
ProtocolNetRPC Protocol = "netrpc"
ProtocolGRPC Protocol = "grpc"
)
// ServerProtocol is an interface that must be implemented for new plugin
// protocols to be servers.
type ServerProtocol interface {
// Init is called once to configure and initialize the protocol, but
// not start listening. This is the point at which all validation should
// be done and errors returned.
Init() error
// Config is extra configuration to be outputted to stdout. This will
// be automatically base64 encoded to ensure it can be parsed properly.
// This can be an empty string if additional configuration is not needed.
Config() string
// Serve is called to serve connections on the given listener. This should
// continue until the listener is closed.
Serve(net.Listener)
}
// ClientProtocol is an interface that must be implemented for new plugin
// protocols to be clients.
type ClientProtocol interface {
io.Closer
// Dispense dispenses a new instance of the plugin with the given name.
Dispense(string) (interface{}, error)
// Ping checks that the client connection is still healthy.
Ping() error
}

170
vendor/github.com/hashicorp/go-plugin/rpc_client.go generated vendored Normal file
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package plugin
import (
"crypto/tls"
"fmt"
"io"
"net"
"net/rpc"
"github.com/hashicorp/yamux"
)
// RPCClient connects to an RPCServer over net/rpc to dispense plugin types.
type RPCClient struct {
broker *MuxBroker
control *rpc.Client
plugins map[string]Plugin
// These are the streams used for the various stdout/err overrides
stdout, stderr net.Conn
}
// newRPCClient creates a new RPCClient. The Client argument is expected
// to be successfully started already with a lock held.
func newRPCClient(c *Client) (*RPCClient, error) {
// Connect to the client
conn, err := net.Dial(c.address.Network(), c.address.String())
if err != nil {
return nil, err
}
if tcpConn, ok := conn.(*net.TCPConn); ok {
// Make sure to set keep alive so that the connection doesn't die
tcpConn.SetKeepAlive(true)
}
if c.config.TLSConfig != nil {
conn = tls.Client(conn, c.config.TLSConfig)
}
// Create the actual RPC client
result, err := NewRPCClient(conn, c.config.Plugins)
if err != nil {
conn.Close()
return nil, err
}
// Begin the stream syncing so that stdin, out, err work properly
err = result.SyncStreams(
c.config.SyncStdout,
c.config.SyncStderr)
if err != nil {
result.Close()
return nil, err
}
return result, nil
}
// NewRPCClient creates a client from an already-open connection-like value.
// Dial is typically used instead.
func NewRPCClient(conn io.ReadWriteCloser, plugins map[string]Plugin) (*RPCClient, error) {
// Create the yamux client so we can multiplex
mux, err := yamux.Client(conn, nil)
if err != nil {
conn.Close()
return nil, err
}
// Connect to the control stream.
control, err := mux.Open()
if err != nil {
mux.Close()
return nil, err
}
// Connect stdout, stderr streams
stdstream := make([]net.Conn, 2)
for i, _ := range stdstream {
stdstream[i], err = mux.Open()
if err != nil {
mux.Close()
return nil, err
}
}
// Create the broker and start it up
broker := newMuxBroker(mux)
go broker.Run()
// Build the client using our broker and control channel.
return &RPCClient{
broker: broker,
control: rpc.NewClient(control),
plugins: plugins,
stdout: stdstream[0],
stderr: stdstream[1],
}, nil
}
// SyncStreams should be called to enable syncing of stdout,
// stderr with the plugin.
//
// This will return immediately and the syncing will continue to happen
// in the background. You do not need to launch this in a goroutine itself.
//
// This should never be called multiple times.
func (c *RPCClient) SyncStreams(stdout io.Writer, stderr io.Writer) error {
go copyStream("stdout", stdout, c.stdout)
go copyStream("stderr", stderr, c.stderr)
return nil
}
// Close closes the connection. The client is no longer usable after this
// is called.
func (c *RPCClient) Close() error {
// Call the control channel and ask it to gracefully exit. If this
// errors, then we save it so that we always return an error but we
// want to try to close the other channels anyways.
var empty struct{}
returnErr := c.control.Call("Control.Quit", true, &empty)
// Close the other streams we have
if err := c.control.Close(); err != nil {
return err
}
if err := c.stdout.Close(); err != nil {
return err
}
if err := c.stderr.Close(); err != nil {
return err
}
if err := c.broker.Close(); err != nil {
return err
}
// Return back the error we got from Control.Quit. This is very important
// since we MUST return non-nil error if this fails so that Client.Kill
// will properly try a process.Kill.
return returnErr
}
func (c *RPCClient) Dispense(name string) (interface{}, error) {
p, ok := c.plugins[name]
if !ok {
return nil, fmt.Errorf("unknown plugin type: %s", name)
}
var id uint32
if err := c.control.Call(
"Dispenser.Dispense", name, &id); err != nil {
return nil, err
}
conn, err := c.broker.Dial(id)
if err != nil {
return nil, err
}
return p.Client(c.broker, rpc.NewClient(conn))
}
// Ping pings the connection to ensure it is still alive.
//
// The error from the RPC call is returned exactly if you want to inspect
// it for further error analysis. Any error returned from here would indicate
// that the connection to the plugin is not healthy.
func (c *RPCClient) Ping() error {
var empty struct{}
return c.control.Call("Control.Ping", true, &empty)
}

197
vendor/github.com/hashicorp/go-plugin/rpc_server.go generated vendored Normal file
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package plugin
import (
"errors"
"fmt"
"io"
"log"
"net"
"net/rpc"
"sync"
"github.com/hashicorp/yamux"
)
// RPCServer listens for network connections and then dispenses interface
// implementations over net/rpc.
//
// After setting the fields below, they shouldn't be read again directly
// from the structure which may be reading/writing them concurrently.
type RPCServer struct {
Plugins map[string]Plugin
// Stdout, Stderr are what this server will use instead of the
// normal stdin/out/err. This is because due to the multi-process nature
// of our plugin system, we can't use the normal process values so we
// make our own custom one we pipe across.
Stdout io.Reader
Stderr io.Reader
// DoneCh should be set to a non-nil channel that will be closed
// when the control requests the RPC server to end.
DoneCh chan<- struct{}
lock sync.Mutex
}
// ServerProtocol impl.
func (s *RPCServer) Init() error { return nil }
// ServerProtocol impl.
func (s *RPCServer) Config() string { return "" }
// ServerProtocol impl.
func (s *RPCServer) Serve(lis net.Listener) {
for {
conn, err := lis.Accept()
if err != nil {
log.Printf("[ERR] plugin: plugin server: %s", err)
return
}
go s.ServeConn(conn)
}
}
// ServeConn runs a single connection.
//
// ServeConn blocks, serving the connection until the client hangs up.
func (s *RPCServer) ServeConn(conn io.ReadWriteCloser) {
// First create the yamux server to wrap this connection
mux, err := yamux.Server(conn, nil)
if err != nil {
conn.Close()
log.Printf("[ERR] plugin: error creating yamux server: %s", err)
return
}
// Accept the control connection
control, err := mux.Accept()
if err != nil {
mux.Close()
if err != io.EOF {
log.Printf("[ERR] plugin: error accepting control connection: %s", err)
}
return
}
// Connect the stdstreams (in, out, err)
stdstream := make([]net.Conn, 2)
for i, _ := range stdstream {
stdstream[i], err = mux.Accept()
if err != nil {
mux.Close()
log.Printf("[ERR] plugin: accepting stream %d: %s", i, err)
return
}
}
// Copy std streams out to the proper place
go copyStream("stdout", stdstream[0], s.Stdout)
go copyStream("stderr", stdstream[1], s.Stderr)
// Create the broker and start it up
broker := newMuxBroker(mux)
go broker.Run()
// Use the control connection to build the dispenser and serve the
// connection.
server := rpc.NewServer()
server.RegisterName("Control", &controlServer{
server: s,
})
server.RegisterName("Dispenser", &dispenseServer{
broker: broker,
plugins: s.Plugins,
})
server.ServeConn(control)
}
// done is called internally by the control server to trigger the
// doneCh to close which is listened to by the main process to cleanly
// exit.
func (s *RPCServer) done() {
s.lock.Lock()
defer s.lock.Unlock()
if s.DoneCh != nil {
close(s.DoneCh)
s.DoneCh = nil
}
}
// dispenseServer dispenses variousinterface implementations for Terraform.
type controlServer struct {
server *RPCServer
}
// Ping can be called to verify the connection (and likely the binary)
// is still alive to a plugin.
func (c *controlServer) Ping(
null bool, response *struct{}) error {
*response = struct{}{}
return nil
}
func (c *controlServer) Quit(
null bool, response *struct{}) error {
// End the server
c.server.done()
// Always return true
*response = struct{}{}
return nil
}
// dispenseServer dispenses variousinterface implementations for Terraform.
type dispenseServer struct {
broker *MuxBroker
plugins map[string]Plugin
}
func (d *dispenseServer) Dispense(
name string, response *uint32) error {
// Find the function to create this implementation
p, ok := d.plugins[name]
if !ok {
return fmt.Errorf("unknown plugin type: %s", name)
}
// Create the implementation first so we know if there is an error.
impl, err := p.Server(d.broker)
if err != nil {
// We turn the error into an errors error so that it works across RPC
return errors.New(err.Error())
}
// Reserve an ID for our implementation
id := d.broker.NextId()
*response = id
// Run the rest in a goroutine since it can only happen once this RPC
// call returns. We wait for a connection for the plugin implementation
// and serve it.
go func() {
conn, err := d.broker.Accept(id)
if err != nil {
log.Printf("[ERR] go-plugin: plugin dispense error: %s: %s", name, err)
return
}
serve(conn, "Plugin", impl)
}()
return nil
}
func serve(conn io.ReadWriteCloser, name string, v interface{}) {
server := rpc.NewServer()
if err := server.RegisterName(name, v); err != nil {
log.Printf("[ERR] go-plugin: plugin dispense error: %s", err)
return
}
server.ServeConn(conn)
}

452
vendor/github.com/hashicorp/go-plugin/server.go generated vendored Normal file
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package plugin
import (
"crypto/tls"
"crypto/x509"
"encoding/base64"
"errors"
"fmt"
"io/ioutil"
"log"
"net"
"os"
"os/signal"
"runtime"
"sort"
"strconv"
"strings"
"sync/atomic"
"github.com/hashicorp/go-hclog"
"google.golang.org/grpc"
)
// CoreProtocolVersion is the ProtocolVersion of the plugin system itself.
// We will increment this whenever we change any protocol behavior. This
// will invalidate any prior plugins but will at least allow us to iterate
// on the core in a safe way. We will do our best to do this very
// infrequently.
const CoreProtocolVersion = 1
// HandshakeConfig is the configuration used by client and servers to
// handshake before starting a plugin connection. This is embedded by
// both ServeConfig and ClientConfig.
//
// In practice, the plugin host creates a HandshakeConfig that is exported
// and plugins then can easily consume it.
type HandshakeConfig struct {
// ProtocolVersion is the version that clients must match on to
// agree they can communicate. This should match the ProtocolVersion
// set on ClientConfig when using a plugin.
// This field is not required if VersionedPlugins are being used in the
// Client or Server configurations.
ProtocolVersion uint
// MagicCookieKey and value are used as a very basic verification
// that a plugin is intended to be launched. This is not a security
// measure, just a UX feature. If the magic cookie doesn't match,
// we show human-friendly output.
MagicCookieKey string
MagicCookieValue string
}
// PluginSet is a set of plugins provided to be registered in the plugin
// server.
type PluginSet map[string]Plugin
// ServeConfig configures what sorts of plugins are served.
type ServeConfig struct {
// HandshakeConfig is the configuration that must match clients.
HandshakeConfig
// TLSProvider is a function that returns a configured tls.Config.
TLSProvider func() (*tls.Config, error)
// Plugins are the plugins that are served.
// The implied version of this PluginSet is the Handshake.ProtocolVersion.
Plugins PluginSet
// VersionedPlugins is a map of PluginSets for specific protocol versions.
// These can be used to negotiate a compatible version between client and
// server. If this is set, Handshake.ProtocolVersion is not required.
VersionedPlugins map[int]PluginSet
// GRPCServer should be non-nil to enable serving the plugins over
// gRPC. This is a function to create the server when needed with the
// given server options. The server options populated by go-plugin will
// be for TLS if set. You may modify the input slice.
//
// Note that the grpc.Server will automatically be registered with
// the gRPC health checking service. This is not optional since go-plugin
// relies on this to implement Ping().
GRPCServer func([]grpc.ServerOption) *grpc.Server
// Logger is used to pass a logger into the server. If none is provided the
// server will create a default logger.
Logger hclog.Logger
}
// protocolVersion determines the protocol version and plugin set to be used by
// the server. In the event that there is no suitable version, the last version
// in the config is returned leaving the client to report the incompatibility.
func protocolVersion(opts *ServeConfig) (int, Protocol, PluginSet) {
protoVersion := int(opts.ProtocolVersion)
pluginSet := opts.Plugins
protoType := ProtocolNetRPC
// Check if the client sent a list of acceptable versions
var clientVersions []int
if vs := os.Getenv("PLUGIN_PROTOCOL_VERSIONS"); vs != "" {
for _, s := range strings.Split(vs, ",") {
v, err := strconv.Atoi(s)
if err != nil {
fmt.Fprintf(os.Stderr, "server sent invalid plugin version %q", s)
continue
}
clientVersions = append(clientVersions, v)
}
}
// We want to iterate in reverse order, to ensure we match the newest
// compatible plugin version.
sort.Sort(sort.Reverse(sort.IntSlice(clientVersions)))
// set the old un-versioned fields as if they were versioned plugins
if opts.VersionedPlugins == nil {
opts.VersionedPlugins = make(map[int]PluginSet)
}
if pluginSet != nil {
opts.VersionedPlugins[protoVersion] = pluginSet
}
// Sort the version to make sure we match the latest first
var versions []int
for v := range opts.VersionedPlugins {
versions = append(versions, v)
}
sort.Sort(sort.Reverse(sort.IntSlice(versions)))
// See if we have multiple versions of Plugins to choose from
for _, version := range versions {
// Record each version, since we guarantee that this returns valid
// values even if they are not a protocol match.
protoVersion = version
pluginSet = opts.VersionedPlugins[version]
// If we have a configured gRPC server we should select a protocol
if opts.GRPCServer != nil {
// All plugins in a set must use the same transport, so check the first
// for the protocol type
for _, p := range pluginSet {
switch p.(type) {
case GRPCPlugin:
protoType = ProtocolGRPC
default:
protoType = ProtocolNetRPC
}
break
}
}
for _, clientVersion := range clientVersions {
if clientVersion == protoVersion {
return protoVersion, protoType, pluginSet
}
}
}
// Return the lowest version as the fallback.
// Since we iterated over all the versions in reverse order above, these
// values are from the lowest version number plugins (which may be from
// a combination of the Handshake.ProtocolVersion and ServeConfig.Plugins
// fields). This allows serving the oldest version of our plugins to a
// legacy client that did not send a PLUGIN_PROTOCOL_VERSIONS list.
return protoVersion, protoType, pluginSet
}
// Serve serves the plugins given by ServeConfig.
//
// Serve doesn't return until the plugin is done being executed. Any
// errors will be outputted to os.Stderr.
//
// This is the method that plugins should call in their main() functions.
func Serve(opts *ServeConfig) {
// Validate the handshake config
if opts.MagicCookieKey == "" || opts.MagicCookieValue == "" {
fmt.Fprintf(os.Stderr,
"Misconfigured ServeConfig given to serve this plugin: no magic cookie\n"+
"key or value was set. Please notify the plugin author and report\n"+
"this as a bug.\n")
os.Exit(1)
}
// First check the cookie
if os.Getenv(opts.MagicCookieKey) != opts.MagicCookieValue {
fmt.Fprintf(os.Stderr,
"This binary is a plugin. These are not meant to be executed directly.\n"+
"Please execute the program that consumes these plugins, which will\n"+
"load any plugins automatically\n")
os.Exit(1)
}
// negotiate the version and plugins
// start with default version in the handshake config
protoVersion, protoType, pluginSet := protocolVersion(opts)
// Logging goes to the original stderr
log.SetOutput(os.Stderr)
logger := opts.Logger
if logger == nil {
// internal logger to os.Stderr
logger = hclog.New(&hclog.LoggerOptions{
Level: hclog.Trace,
Output: os.Stderr,
JSONFormat: true,
})
}
// Create our new stdout, stderr files. These will override our built-in
// stdout/stderr so that it works across the stream boundary.
stdout_r, stdout_w, err := os.Pipe()
if err != nil {
fmt.Fprintf(os.Stderr, "Error preparing plugin: %s\n", err)
os.Exit(1)
}
stderr_r, stderr_w, err := os.Pipe()
if err != nil {
fmt.Fprintf(os.Stderr, "Error preparing plugin: %s\n", err)
os.Exit(1)
}
// Register a listener so we can accept a connection
listener, err := serverListener()
if err != nil {
logger.Error("plugin init error", "error", err)
return
}
// Close the listener on return. We wrap this in a func() on purpose
// because the "listener" reference may change to TLS.
defer func() {
listener.Close()
}()
var tlsConfig *tls.Config
if opts.TLSProvider != nil {
tlsConfig, err = opts.TLSProvider()
if err != nil {
logger.Error("plugin tls init", "error", err)
return
}
}
var serverCert string
clientCert := os.Getenv("PLUGIN_CLIENT_CERT")
// If the client is configured using AutoMTLS, the certificate will be here,
// and we need to generate our own in response.
if tlsConfig == nil && clientCert != "" {
logger.Info("configuring server automatic mTLS")
clientCertPool := x509.NewCertPool()
if !clientCertPool.AppendCertsFromPEM([]byte(clientCert)) {
logger.Error("client cert provided but failed to parse", "cert", clientCert)
}
certPEM, keyPEM, err := generateCert()
if err != nil {
logger.Error("failed to generate client certificate", "error", err)
panic(err)
}
cert, err := tls.X509KeyPair(certPEM, keyPEM)
if err != nil {
logger.Error("failed to parse client certificate", "error", err)
panic(err)
}
tlsConfig = &tls.Config{
Certificates: []tls.Certificate{cert},
ClientAuth: tls.RequireAndVerifyClientCert,
ClientCAs: clientCertPool,
MinVersion: tls.VersionTLS12,
}
// We send back the raw leaf cert data for the client rather than the
// PEM, since the protocol can't handle newlines.
serverCert = base64.RawStdEncoding.EncodeToString(cert.Certificate[0])
}
// Create the channel to tell us when we're done
doneCh := make(chan struct{})
// Build the server type
var server ServerProtocol
switch protoType {
case ProtocolNetRPC:
// If we have a TLS configuration then we wrap the listener
// ourselves and do it at that level.
if tlsConfig != nil {
listener = tls.NewListener(listener, tlsConfig)
}
// Create the RPC server to dispense
server = &RPCServer{
Plugins: pluginSet,
Stdout: stdout_r,
Stderr: stderr_r,
DoneCh: doneCh,
}
case ProtocolGRPC:
// Create the gRPC server
server = &GRPCServer{
Plugins: pluginSet,
Server: opts.GRPCServer,
TLS: tlsConfig,
Stdout: stdout_r,
Stderr: stderr_r,
DoneCh: doneCh,
logger: logger,
}
default:
panic("unknown server protocol: " + protoType)
}
// Initialize the servers
if err := server.Init(); err != nil {
logger.Error("protocol init", "error", err)
return
}
logger.Debug("plugin address", "network", listener.Addr().Network(), "address", listener.Addr().String())
// Output the address and service name to stdout so that the client can bring it up.
fmt.Printf("%d|%d|%s|%s|%s|%s\n",
CoreProtocolVersion,
protoVersion,
listener.Addr().Network(),
listener.Addr().String(),
protoType,
serverCert)
os.Stdout.Sync()
// Eat the interrupts
ch := make(chan os.Signal, 1)
signal.Notify(ch, os.Interrupt)
go func() {
var count int32 = 0
for {
<-ch
newCount := atomic.AddInt32(&count, 1)
logger.Debug("plugin received interrupt signal, ignoring", "count", newCount)
}
}()
// Set our new out, err
os.Stdout = stdout_w
os.Stderr = stderr_w
// Accept connections and wait for completion
go server.Serve(listener)
<-doneCh
}
func serverListener() (net.Listener, error) {
if runtime.GOOS == "windows" {
return serverListener_tcp()
}
return serverListener_unix()
}
func serverListener_tcp() (net.Listener, error) {
envMinPort := os.Getenv("PLUGIN_MIN_PORT")
envMaxPort := os.Getenv("PLUGIN_MAX_PORT")
var minPort, maxPort int64
var err error
switch {
case len(envMinPort) == 0:
minPort = 0
default:
minPort, err = strconv.ParseInt(envMinPort, 10, 32)
if err != nil {
return nil, fmt.Errorf("Couldn't get value from PLUGIN_MIN_PORT: %v", err)
}
}
switch {
case len(envMaxPort) == 0:
maxPort = 0
default:
maxPort, err = strconv.ParseInt(envMaxPort, 10, 32)
if err != nil {
return nil, fmt.Errorf("Couldn't get value from PLUGIN_MAX_PORT: %v", err)
}
}
if minPort > maxPort {
return nil, fmt.Errorf("ENV_MIN_PORT value of %d is greater than PLUGIN_MAX_PORT value of %d", minPort, maxPort)
}
for port := minPort; port <= maxPort; port++ {
address := fmt.Sprintf("127.0.0.1:%d", port)
listener, err := net.Listen("tcp", address)
if err == nil {
return listener, nil
}
}
return nil, errors.New("Couldn't bind plugin TCP listener")
}
func serverListener_unix() (net.Listener, error) {
tf, err := ioutil.TempFile("", "plugin")
if err != nil {
return nil, err
}
path := tf.Name()
// Close the file and remove it because it has to not exist for
// the domain socket.
if err := tf.Close(); err != nil {
return nil, err
}
if err := os.Remove(path); err != nil {
return nil, err
}
l, err := net.Listen("unix", path)
if err != nil {
return nil, err
}
// Wrap the listener in rmListener so that the Unix domain socket file
// is removed on close.
return &rmListener{
Listener: l,
Path: path,
}, nil
}
// rmListener is an implementation of net.Listener that forwards most
// calls to the listener but also removes a file as part of the close. We
// use this to cleanup the unix domain socket on close.
type rmListener struct {
net.Listener
Path string
}
func (l *rmListener) Close() error {
// Close the listener itself
if err := l.Listener.Close(); err != nil {
return err
}
// Remove the file
return os.Remove(l.Path)
}

31
vendor/github.com/hashicorp/go-plugin/server_mux.go generated vendored Normal file
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package plugin
import (
"fmt"
"os"
)
// ServeMuxMap is the type that is used to configure ServeMux
type ServeMuxMap map[string]*ServeConfig
// ServeMux is like Serve, but serves multiple types of plugins determined
// by the argument given on the command-line.
//
// This command doesn't return until the plugin is done being executed. Any
// errors are logged or output to stderr.
func ServeMux(m ServeMuxMap) {
if len(os.Args) != 2 {
fmt.Fprintf(os.Stderr,
"Invoked improperly. This is an internal command that shouldn't\n"+
"be manually invoked.\n")
os.Exit(1)
}
opts, ok := m[os.Args[1]]
if !ok {
fmt.Fprintf(os.Stderr, "Unknown plugin: %s\n", os.Args[1])
os.Exit(1)
}
Serve(opts)
}

18
vendor/github.com/hashicorp/go-plugin/stream.go generated vendored Normal file
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@ -0,0 +1,18 @@
package plugin
import (
"io"
"log"
)
func copyStream(name string, dst io.Writer, src io.Reader) {
if src == nil {
panic(name + ": src is nil")
}
if dst == nil {
panic(name + ": dst is nil")
}
if _, err := io.Copy(dst, src); err != nil && err != io.EOF {
log.Printf("[ERR] plugin: stream copy '%s' error: %s", name, err)
}
}

180
vendor/github.com/hashicorp/go-plugin/testing.go generated vendored Normal file
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package plugin
import (
"bytes"
"context"
"io"
"net"
"net/rpc"
"github.com/mitchellh/go-testing-interface"
hclog "github.com/hashicorp/go-hclog"
"github.com/hashicorp/go-plugin/internal/plugin"
"google.golang.org/grpc"
)
// TestOptions allows specifying options that can affect the behavior of the
// test functions
type TestOptions struct {
//ServerStdout causes the given value to be used in place of a blank buffer
//for RPCServer's Stdout
ServerStdout io.ReadCloser
//ServerStderr causes the given value to be used in place of a blank buffer
//for RPCServer's Stderr
ServerStderr io.ReadCloser
}
// The testing file contains test helpers that you can use outside of
// this package for making it easier to test plugins themselves.
// TestConn is a helper function for returning a client and server
// net.Conn connected to each other.
func TestConn(t testing.T) (net.Conn, net.Conn) {
// Listen to any local port. This listener will be closed
// after a single connection is established.
l, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatalf("err: %s", err)
}
// Start a goroutine to accept our client connection
var serverConn net.Conn
doneCh := make(chan struct{})
go func() {
defer close(doneCh)
defer l.Close()
var err error
serverConn, err = l.Accept()
if err != nil {
t.Fatalf("err: %s", err)
}
}()
// Connect to the server
clientConn, err := net.Dial("tcp", l.Addr().String())
if err != nil {
t.Fatalf("err: %s", err)
}
// Wait for the server side to acknowledge it has connected
<-doneCh
return clientConn, serverConn
}
// TestRPCConn returns a rpc client and server connected to each other.
func TestRPCConn(t testing.T) (*rpc.Client, *rpc.Server) {
clientConn, serverConn := TestConn(t)
server := rpc.NewServer()
go server.ServeConn(serverConn)
client := rpc.NewClient(clientConn)
return client, server
}
// TestPluginRPCConn returns a plugin RPC client and server that are connected
// together and configured.
func TestPluginRPCConn(t testing.T, ps map[string]Plugin, opts *TestOptions) (*RPCClient, *RPCServer) {
// Create two net.Conns we can use to shuttle our control connection
clientConn, serverConn := TestConn(t)
// Start up the server
server := &RPCServer{Plugins: ps, Stdout: new(bytes.Buffer), Stderr: new(bytes.Buffer)}
if opts != nil {
if opts.ServerStdout != nil {
server.Stdout = opts.ServerStdout
}
if opts.ServerStderr != nil {
server.Stderr = opts.ServerStderr
}
}
go server.ServeConn(serverConn)
// Connect the client to the server
client, err := NewRPCClient(clientConn, ps)
if err != nil {
t.Fatalf("err: %s", err)
}
return client, server
}
// TestGRPCConn returns a gRPC client conn and grpc server that are connected
// together and configured. The register function is used to register services
// prior to the Serve call. This is used to test gRPC connections.
func TestGRPCConn(t testing.T, register func(*grpc.Server)) (*grpc.ClientConn, *grpc.Server) {
// Create a listener
l, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatalf("err: %s", err)
}
server := grpc.NewServer()
register(server)
go server.Serve(l)
// Connect to the server
conn, err := grpc.Dial(
l.Addr().String(),
grpc.WithBlock(),
grpc.WithInsecure())
if err != nil {
t.Fatalf("err: %s", err)
}
// Connection successful, close the listener
l.Close()
return conn, server
}
// TestPluginGRPCConn returns a plugin gRPC client and server that are connected
// together and configured. This is used to test gRPC connections.
func TestPluginGRPCConn(t testing.T, ps map[string]Plugin) (*GRPCClient, *GRPCServer) {
// Create a listener
l, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatalf("err: %s", err)
}
// Start up the server
server := &GRPCServer{
Plugins: ps,
DoneCh: make(chan struct{}),
Server: DefaultGRPCServer,
Stdout: new(bytes.Buffer),
Stderr: new(bytes.Buffer),
logger: hclog.Default(),
}
if err := server.Init(); err != nil {
t.Fatalf("err: %s", err)
}
go server.Serve(l)
// Connect to the server
conn, err := grpc.Dial(
l.Addr().String(),
grpc.WithBlock(),
grpc.WithInsecure())
if err != nil {
t.Fatalf("err: %s", err)
}
brokerGRPCClient := newGRPCBrokerClient(conn)
broker := newGRPCBroker(brokerGRPCClient, nil)
go broker.Run()
go brokerGRPCClient.StartStream()
// Create the client
client := &GRPCClient{
Conn: conn,
Plugins: ps,
broker: broker,
doneCtx: context.Background(),
controller: plugin.NewGRPCControllerClient(conn),
}
return client, server
}

363
vendor/github.com/hashicorp/go-secure-stdlib/parseutil/LICENSE generated vendored Normal file
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@ -0,0 +1,363 @@
Mozilla Public License, version 2.0
1. Definitions
1.1. "Contributor"
means each individual or legal entity that creates, contributes to the
creation of, or owns Covered Software.
1.2. "Contributor Version"
means the combination of the Contributions of others (if any) used by a
Contributor and that particular Contributor's Contribution.
1.3. "Contribution"
means Covered Software of a particular Contributor.
1.4. "Covered Software"
means Source Code Form to which the initial Contributor has attached the
notice in Exhibit A, the Executable Form of such Source Code Form, and
Modifications of such Source Code Form, in each case including portions
thereof.
1.5. "Incompatible With Secondary Licenses"
means
a. that the initial Contributor has attached the notice described in
Exhibit B to the Covered Software; or
b. that the Covered Software was made available under the terms of
version 1.1 or earlier of the License, but not also under the terms of
a Secondary License.
1.6. "Executable Form"
means any form of the work other than Source Code Form.
1.7. "Larger Work"
means a work that combines Covered Software with other material, in a
separate file or files, that is not Covered Software.
1.8. "License"
means this document.
1.9. "Licensable"
means having the right to grant, to the maximum extent possible, whether
at the time of the initial grant or subsequently, any and all of the
rights conveyed by this License.
1.10. "Modifications"
means any of the following:
a. any file in Source Code Form that results from an addition to,
deletion from, or modification of the contents of Covered Software; or
b. any new file in Source Code Form that contains any Covered Software.
1.11. "Patent Claims" of a Contributor
means any patent claim(s), including without limitation, method,
process, and apparatus claims, in any patent Licensable by such
Contributor that would be infringed, but for the grant of the License,
by the making, using, selling, offering for sale, having made, import,
or transfer of either its Contributions or its Contributor Version.
1.12. "Secondary License"
means either the GNU General Public License, Version 2.0, the GNU Lesser
General Public License, Version 2.1, the GNU Affero General Public
License, Version 3.0, or any later versions of those licenses.
1.13. "Source Code Form"
means the form of the work preferred for making modifications.
1.14. "You" (or "Your")
means an individual or a legal entity exercising rights under this
License. For legal entities, "You" includes any entity that controls, is
controlled by, or is under common control with You. For purposes of this
definition, "control" means (a) the power, direct or indirect, to cause
the direction or management of such entity, whether by contract or
otherwise, or (b) ownership of more than fifty percent (50%) of the
outstanding shares or beneficial ownership of such entity.
2. License Grants and Conditions
2.1. Grants
Each Contributor hereby grants You a world-wide, royalty-free,
non-exclusive license:
a. under intellectual property rights (other than patent or trademark)
Licensable by such Contributor to use, reproduce, make available,
modify, display, perform, distribute, and otherwise exploit its
Contributions, either on an unmodified basis, with Modifications, or
as part of a Larger Work; and
b. under Patent Claims of such Contributor to make, use, sell, offer for
sale, have made, import, and otherwise transfer either its
Contributions or its Contributor Version.
2.2. Effective Date
The licenses granted in Section 2.1 with respect to any Contribution
become effective for each Contribution on the date the Contributor first
distributes such Contribution.
2.3. Limitations on Grant Scope
The licenses granted in this Section 2 are the only rights granted under
this License. No additional rights or licenses will be implied from the
distribution or licensing of Covered Software under this License.
Notwithstanding Section 2.1(b) above, no patent license is granted by a
Contributor:
a. for any code that a Contributor has removed from Covered Software; or
b. for infringements caused by: (i) Your and any other third party's
modifications of Covered Software, or (ii) the combination of its
Contributions with other software (except as part of its Contributor
Version); or
c. under Patent Claims infringed by Covered Software in the absence of
its Contributions.
This License does not grant any rights in the trademarks, service marks,
or logos of any Contributor (except as may be necessary to comply with
the notice requirements in Section 3.4).
2.4. Subsequent Licenses
No Contributor makes additional grants as a result of Your choice to
distribute the Covered Software under a subsequent version of this
License (see Section 10.2) or under the terms of a Secondary License (if
permitted under the terms of Section 3.3).
2.5. Representation
Each Contributor represents that the Contributor believes its
Contributions are its original creation(s) or it has sufficient rights to
grant the rights to its Contributions conveyed by this License.
2.6. Fair Use
This License is not intended to limit any rights You have under
applicable copyright doctrines of fair use, fair dealing, or other
equivalents.
2.7. Conditions
Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
Section 2.1.
3. Responsibilities
3.1. Distribution of Source Form
All distribution of Covered Software in Source Code Form, including any
Modifications that You create or to which You contribute, must be under
the terms of this License. You must inform recipients that the Source
Code Form of the Covered Software is governed by the terms of this
License, and how they can obtain a copy of this License. You may not
attempt to alter or restrict the recipients' rights in the Source Code
Form.
3.2. Distribution of Executable Form
If You distribute Covered Software in Executable Form then:
a. such Covered Software must also be made available in Source Code Form,
as described in Section 3.1, and You must inform recipients of the
Executable Form how they can obtain a copy of such Source Code Form by
reasonable means in a timely manner, at a charge no more than the cost
of distribution to the recipient; and
b. You may distribute such Executable Form under the terms of this
License, or sublicense it under different terms, provided that the
license for the Executable Form does not attempt to limit or alter the
recipients' rights in the Source Code Form under this License.
3.3. Distribution of a Larger Work
You may create and distribute a Larger Work under terms of Your choice,
provided that You also comply with the requirements of this License for
the Covered Software. If the Larger Work is a combination of Covered
Software with a work governed by one or more Secondary Licenses, and the
Covered Software is not Incompatible With Secondary Licenses, this
License permits You to additionally distribute such Covered Software
under the terms of such Secondary License(s), so that the recipient of
the Larger Work may, at their option, further distribute the Covered
Software under the terms of either this License or such Secondary
License(s).
3.4. Notices
You may not remove or alter the substance of any license notices
(including copyright notices, patent notices, disclaimers of warranty, or
limitations of liability) contained within the Source Code Form of the
Covered Software, except that You may alter any license notices to the
extent required to remedy known factual inaccuracies.
3.5. Application of Additional Terms
You may choose to offer, and to charge a fee for, warranty, support,
indemnity or liability obligations to one or more recipients of Covered
Software. However, You may do so only on Your own behalf, and not on
behalf of any Contributor. You must make it absolutely clear that any
such warranty, support, indemnity, or liability obligation is offered by
You alone, and You hereby agree to indemnify every Contributor for any
liability incurred by such Contributor as a result of warranty, support,
indemnity or liability terms You offer. You may include additional
disclaimers of warranty and limitations of liability specific to any
jurisdiction.
4. Inability to Comply Due to Statute or Regulation
If it is impossible for You to comply with any of the terms of this License
with respect to some or all of the Covered Software due to statute,
judicial order, or regulation then You must: (a) comply with the terms of
this License to the maximum extent possible; and (b) describe the
limitations and the code they affect. Such description must be placed in a
text file included with all distributions of the Covered Software under
this License. Except to the extent prohibited by statute or regulation,
such description must be sufficiently detailed for a recipient of ordinary
skill to be able to understand it.
5. Termination
5.1. The rights granted under this License will terminate automatically if You
fail to comply with any of its terms. However, if You become compliant,
then the rights granted under this License from a particular Contributor
are reinstated (a) provisionally, unless and until such Contributor
explicitly and finally terminates Your grants, and (b) on an ongoing
basis, if such Contributor fails to notify You of the non-compliance by
some reasonable means prior to 60 days after You have come back into
compliance. Moreover, Your grants from a particular Contributor are
reinstated on an ongoing basis if such Contributor notifies You of the
non-compliance by some reasonable means, this is the first time You have
received notice of non-compliance with this License from such
Contributor, and You become compliant prior to 30 days after Your receipt
of the notice.
5.2. If You initiate litigation against any entity by asserting a patent
infringement claim (excluding declaratory judgment actions,
counter-claims, and cross-claims) alleging that a Contributor Version
directly or indirectly infringes any patent, then the rights granted to
You by any and all Contributors for the Covered Software under Section
2.1 of this License shall terminate.
5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
license agreements (excluding distributors and resellers) which have been
validly granted by You or Your distributors under this License prior to
termination shall survive termination.
6. Disclaimer of Warranty
Covered Software is provided under this License on an "as is" basis,
without warranty of any kind, either expressed, implied, or statutory,
including, without limitation, warranties that the Covered Software is free
of defects, merchantable, fit for a particular purpose or non-infringing.
The entire risk as to the quality and performance of the Covered Software
is with You. Should any Covered Software prove defective in any respect,
You (not any Contributor) assume the cost of any necessary servicing,
repair, or correction. This disclaimer of warranty constitutes an essential
part of this License. No use of any Covered Software is authorized under
this License except under this disclaimer.
7. Limitation of Liability
Under no circumstances and under no legal theory, whether tort (including
negligence), contract, or otherwise, shall any Contributor, or anyone who
distributes Covered Software as permitted above, be liable to You for any
direct, indirect, special, incidental, or consequential damages of any
character including, without limitation, damages for lost profits, loss of
goodwill, work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses, even if such party shall have been
informed of the possibility of such damages. This limitation of liability
shall not apply to liability for death or personal injury resulting from
such party's negligence to the extent applicable law prohibits such
limitation. Some jurisdictions do not allow the exclusion or limitation of
incidental or consequential damages, so this exclusion and limitation may
not apply to You.
8. Litigation
Any litigation relating to this License may be brought only in the courts
of a jurisdiction where the defendant maintains its principal place of
business and such litigation shall be governed by laws of that
jurisdiction, without reference to its conflict-of-law provisions. Nothing
in this Section shall prevent a party's ability to bring cross-claims or
counter-claims.
9. Miscellaneous
This License represents the complete agreement concerning the subject
matter hereof. If any provision of this License is held to be
unenforceable, such provision shall be reformed only to the extent
necessary to make it enforceable. Any law or regulation which provides that
the language of a contract shall be construed against the drafter shall not
be used to construe this License against a Contributor.
10. Versions of the License
10.1. New Versions
Mozilla Foundation is the license steward. Except as provided in Section
10.3, no one other than the license steward has the right to modify or
publish new versions of this License. Each version will be given a
distinguishing version number.
10.2. Effect of New Versions
You may distribute the Covered Software under the terms of the version
of the License under which You originally received the Covered Software,
or under the terms of any subsequent version published by the license
steward.
10.3. Modified Versions
If you create software not governed by this License, and you want to
create a new license for such software, you may create and use a
modified version of this License if you rename the license and remove
any references to the name of the license steward (except to note that
such modified license differs from this License).
10.4. Distributing Source Code Form that is Incompatible With Secondary
Licenses If You choose to distribute Source Code Form that is
Incompatible With Secondary Licenses under the terms of this version of
the License, the notice described in Exhibit B of this License must be
attached.
Exhibit A - Source Code Form License Notice
This Source Code Form is subject to the
terms of the Mozilla Public License, v.
2.0. If a copy of the MPL was not
distributed with this file, You can
obtain one at
http://mozilla.org/MPL/2.0/.
If it is not possible or desirable to put the notice in a particular file,
then You may include the notice in a location (such as a LICENSE file in a
relevant directory) where a recipient would be likely to look for such a
notice.
You may add additional accurate notices of copyright ownership.
Exhibit B - "Incompatible With Secondary Licenses" Notice
This Source Code Form is "Incompatible
With Secondary Licenses", as defined by
the Mozilla Public License, v. 2.0.

10
vendor/github.com/hashicorp/go-secure-stdlib/parseutil/go.mod generated vendored Normal file
View File

@ -0,0 +1,10 @@
module github.com/hashicorp/go-secure-stdlib/parseutil
go 1.16
require (
github.com/hashicorp/go-secure-stdlib/strutil v0.1.1
github.com/hashicorp/go-sockaddr v1.0.2
github.com/mitchellh/mapstructure v1.4.1
github.com/stretchr/testify v1.7.0
)

31
vendor/github.com/hashicorp/go-secure-stdlib/parseutil/go.sum generated vendored Normal file
View File

@ -0,0 +1,31 @@
github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
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/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
github.com/hashicorp/go-multierror v1.0.0/go.mod h1:dHtQlpGsu+cZNNAkkCN/P3hoUDHhCYQXV3UM06sGGrk=
github.com/hashicorp/go-secure-stdlib/strutil v0.1.1 h1:nd0HIW15E6FG1MsnArYaHfuw9C2zgzM8LxkG5Ty/788=
github.com/hashicorp/go-secure-stdlib/strutil v0.1.1/go.mod h1:gKOamz3EwoIoJq7mlMIRBpVTAUn8qPCrEclOKKWhD3U=
github.com/hashicorp/go-sockaddr v1.0.2 h1:ztczhD1jLxIRjVejw8gFomI1BQZOe2WoVOu0SyteCQc=
github.com/hashicorp/go-sockaddr v1.0.2/go.mod h1:rB4wwRAUzs07qva3c5SdrY/NEtAUjGlgmH/UkBUC97A=
github.com/mattn/go-colorable v0.0.9/go.mod h1:9vuHe8Xs5qXnSaW/c/ABM9alt+Vo+STaOChaDxuIBZU=
github.com/mattn/go-isatty v0.0.3/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4=
github.com/mitchellh/cli v1.0.0/go.mod h1:hNIlj7HEI86fIcpObd7a0FcrxTWetlwJDGcceTlRvqc=
github.com/mitchellh/go-wordwrap v1.0.0/go.mod h1:ZXFpozHsX6DPmq2I0TCekCxypsnAUbP2oI0UX1GXzOo=
github.com/mitchellh/mapstructure v1.4.1 h1:CpVNEelQCZBooIPDn+AR3NpivK/TIKU8bDxdASFVQag=
github.com/mitchellh/mapstructure v1.4.1/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
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/posener/complete v1.1.1/go.mod h1:em0nMJCgc9GFtwrmVmEMR/ZL6WyhyjMBndrE9hABlRI=
github.com/ryanuber/columnize v2.1.0+incompatible/go.mod h1:sm1tb6uqfes/u+d4ooFouqFdy9/2g9QGwK3SQygK0Ts=
github.com/ryanuber/go-glob v1.0.0 h1:iQh3xXAumdQ+4Ufa5b25cRpC5TYKlno6hsv6Cb3pkBk=
github.com/ryanuber/go-glob v1.0.0/go.mod h1:807d1WSdnB0XRJzKNil9Om6lcp/3a0v4qIHxIXzX/Yc=
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/sys v0.0.0-20180823144017-11551d06cbcc/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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=

46
vendor/github.com/hashicorp/go-secure-stdlib/parseutil/parsepath.go generated vendored Normal file
View File

@ -0,0 +1,46 @@
package parseutil
import (
"errors"
"fmt"
"io/ioutil"
"net/url"
"os"
"strings"
)
var ErrNotAUrl = errors.New("not a url")
// ParsePath parses a URL with schemes file://, env://, or any other. Depending
// on the scheme it will return specific types of data:
//
// * file:// will return a string with the file's contents
//
// * env:// will return a string with the env var's contents
//
// * Anything else will return the string as it was
//
// On error, we return the original string along with the error. The caller can
// switch on errors.Is(err, ErrNotAUrl) to understand whether it was the parsing
// step that errored or something else (such as a file not found). This is
// useful to attempt to read a non-URL string from some resource, but where the
// original input may simply be a valid string of that type.
func ParsePath(path string) (string, error) {
path = strings.TrimSpace(path)
parsed, err := url.Parse(path)
if err != nil {
return path, fmt.Errorf("error parsing url (%q): %w", err.Error(), ErrNotAUrl)
}
switch parsed.Scheme {
case "file":
contents, err := ioutil.ReadFile(strings.TrimPrefix(path, "file://"))
if err != nil {
return path, fmt.Errorf("error reading file at %s: %w", path, err)
}
return strings.TrimSpace(string(contents)), nil
case "env":
return strings.TrimSpace(os.Getenv(strings.TrimPrefix(path, "env://"))), nil
}
return path, nil
}

5
vendor/github.com/hashicorp/vault/sdk/helper/parseutil/parseutil.go → vendor/github.com/hashicorp/go-secure-stdlib/parseutil/parseutil.go generated vendored
View File

@ -9,9 +9,8 @@ import (
"strings"
"time"
"github.com/hashicorp/errwrap"
"github.com/hashicorp/go-secure-stdlib/strutil"
sockaddr "github.com/hashicorp/go-sockaddr"
"github.com/hashicorp/vault/sdk/helper/strutil"
"github.com/mitchellh/mapstructure"
)
@ -298,7 +297,7 @@ func ParseAddrs(addrs interface{}) ([]*sockaddr.SockAddrMarshaler, error) {
for _, addr := range stringAddrs {
sa, err := sockaddr.NewSockAddr(addr)
if err != nil {
return nil, errwrap.Wrapf(fmt.Sprintf("error parsing address %q: {{err}}", addr), err)
return nil, fmt.Errorf("error parsing address %q: %w", addr, err)
}
out = append(out, &sockaddr.SockAddrMarshaler{
SockAddr: sa,

363
vendor/github.com/hashicorp/go-secure-stdlib/strutil/LICENSE generated vendored Normal file
View File

@ -0,0 +1,363 @@
Mozilla Public License, version 2.0
1. Definitions
1.1. "Contributor"
means each individual or legal entity that creates, contributes to the
creation of, or owns Covered Software.
1.2. "Contributor Version"
means the combination of the Contributions of others (if any) used by a
Contributor and that particular Contributor's Contribution.
1.3. "Contribution"
means Covered Software of a particular Contributor.
1.4. "Covered Software"
means Source Code Form to which the initial Contributor has attached the
notice in Exhibit A, the Executable Form of such Source Code Form, and
Modifications of such Source Code Form, in each case including portions
thereof.
1.5. "Incompatible With Secondary Licenses"
means
a. that the initial Contributor has attached the notice described in
Exhibit B to the Covered Software; or
b. that the Covered Software was made available under the terms of
version 1.1 or earlier of the License, but not also under the terms of
a Secondary License.
1.6. "Executable Form"
means any form of the work other than Source Code Form.
1.7. "Larger Work"
means a work that combines Covered Software with other material, in a
separate file or files, that is not Covered Software.
1.8. "License"
means this document.
1.9. "Licensable"
means having the right to grant, to the maximum extent possible, whether
at the time of the initial grant or subsequently, any and all of the
rights conveyed by this License.
1.10. "Modifications"
means any of the following:
a. any file in Source Code Form that results from an addition to,
deletion from, or modification of the contents of Covered Software; or
b. any new file in Source Code Form that contains any Covered Software.
1.11. "Patent Claims" of a Contributor
means any patent claim(s), including without limitation, method,
process, and apparatus claims, in any patent Licensable by such
Contributor that would be infringed, but for the grant of the License,
by the making, using, selling, offering for sale, having made, import,
or transfer of either its Contributions or its Contributor Version.
1.12. "Secondary License"
means either the GNU General Public License, Version 2.0, the GNU Lesser
General Public License, Version 2.1, the GNU Affero General Public
License, Version 3.0, or any later versions of those licenses.
1.13. "Source Code Form"
means the form of the work preferred for making modifications.
1.14. "You" (or "Your")
means an individual or a legal entity exercising rights under this
License. For legal entities, "You" includes any entity that controls, is
controlled by, or is under common control with You. For purposes of this
definition, "control" means (a) the power, direct or indirect, to cause
the direction or management of such entity, whether by contract or
otherwise, or (b) ownership of more than fifty percent (50%) of the
outstanding shares or beneficial ownership of such entity.
2. License Grants and Conditions
2.1. Grants
Each Contributor hereby grants You a world-wide, royalty-free,
non-exclusive license:
a. under intellectual property rights (other than patent or trademark)
Licensable by such Contributor to use, reproduce, make available,
modify, display, perform, distribute, and otherwise exploit its
Contributions, either on an unmodified basis, with Modifications, or
as part of a Larger Work; and
b. under Patent Claims of such Contributor to make, use, sell, offer for
sale, have made, import, and otherwise transfer either its
Contributions or its Contributor Version.
2.2. Effective Date
The licenses granted in Section 2.1 with respect to any Contribution
become effective for each Contribution on the date the Contributor first
distributes such Contribution.
2.3. Limitations on Grant Scope
The licenses granted in this Section 2 are the only rights granted under
this License. No additional rights or licenses will be implied from the
distribution or licensing of Covered Software under this License.
Notwithstanding Section 2.1(b) above, no patent license is granted by a
Contributor:
a. for any code that a Contributor has removed from Covered Software; or
b. for infringements caused by: (i) Your and any other third party's
modifications of Covered Software, or (ii) the combination of its
Contributions with other software (except as part of its Contributor
Version); or
c. under Patent Claims infringed by Covered Software in the absence of
its Contributions.
This License does not grant any rights in the trademarks, service marks,
or logos of any Contributor (except as may be necessary to comply with
the notice requirements in Section 3.4).
2.4. Subsequent Licenses
No Contributor makes additional grants as a result of Your choice to
distribute the Covered Software under a subsequent version of this
License (see Section 10.2) or under the terms of a Secondary License (if
permitted under the terms of Section 3.3).
2.5. Representation
Each Contributor represents that the Contributor believes its
Contributions are its original creation(s) or it has sufficient rights to
grant the rights to its Contributions conveyed by this License.
2.6. Fair Use
This License is not intended to limit any rights You have under
applicable copyright doctrines of fair use, fair dealing, or other
equivalents.
2.7. Conditions
Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
Section 2.1.
3. Responsibilities
3.1. Distribution of Source Form
All distribution of Covered Software in Source Code Form, including any
Modifications that You create or to which You contribute, must be under
the terms of this License. You must inform recipients that the Source
Code Form of the Covered Software is governed by the terms of this
License, and how they can obtain a copy of this License. You may not
attempt to alter or restrict the recipients' rights in the Source Code
Form.
3.2. Distribution of Executable Form
If You distribute Covered Software in Executable Form then:
a. such Covered Software must also be made available in Source Code Form,
as described in Section 3.1, and You must inform recipients of the
Executable Form how they can obtain a copy of such Source Code Form by
reasonable means in a timely manner, at a charge no more than the cost
of distribution to the recipient; and
b. You may distribute such Executable Form under the terms of this
License, or sublicense it under different terms, provided that the
license for the Executable Form does not attempt to limit or alter the
recipients' rights in the Source Code Form under this License.
3.3. Distribution of a Larger Work
You may create and distribute a Larger Work under terms of Your choice,
provided that You also comply with the requirements of this License for
the Covered Software. If the Larger Work is a combination of Covered
Software with a work governed by one or more Secondary Licenses, and the
Covered Software is not Incompatible With Secondary Licenses, this
License permits You to additionally distribute such Covered Software
under the terms of such Secondary License(s), so that the recipient of
the Larger Work may, at their option, further distribute the Covered
Software under the terms of either this License or such Secondary
License(s).
3.4. Notices
You may not remove or alter the substance of any license notices
(including copyright notices, patent notices, disclaimers of warranty, or
limitations of liability) contained within the Source Code Form of the
Covered Software, except that You may alter any license notices to the
extent required to remedy known factual inaccuracies.
3.5. Application of Additional Terms
You may choose to offer, and to charge a fee for, warranty, support,
indemnity or liability obligations to one or more recipients of Covered
Software. However, You may do so only on Your own behalf, and not on
behalf of any Contributor. You must make it absolutely clear that any
such warranty, support, indemnity, or liability obligation is offered by
You alone, and You hereby agree to indemnify every Contributor for any
liability incurred by such Contributor as a result of warranty, support,
indemnity or liability terms You offer. You may include additional
disclaimers of warranty and limitations of liability specific to any
jurisdiction.
4. Inability to Comply Due to Statute or Regulation
If it is impossible for You to comply with any of the terms of this License
with respect to some or all of the Covered Software due to statute,
judicial order, or regulation then You must: (a) comply with the terms of
this License to the maximum extent possible; and (b) describe the
limitations and the code they affect. Such description must be placed in a
text file included with all distributions of the Covered Software under
this License. Except to the extent prohibited by statute or regulation,
such description must be sufficiently detailed for a recipient of ordinary
skill to be able to understand it.
5. Termination
5.1. The rights granted under this License will terminate automatically if You
fail to comply with any of its terms. However, if You become compliant,
then the rights granted under this License from a particular Contributor
are reinstated (a) provisionally, unless and until such Contributor
explicitly and finally terminates Your grants, and (b) on an ongoing
basis, if such Contributor fails to notify You of the non-compliance by
some reasonable means prior to 60 days after You have come back into
compliance. Moreover, Your grants from a particular Contributor are
reinstated on an ongoing basis if such Contributor notifies You of the
non-compliance by some reasonable means, this is the first time You have
received notice of non-compliance with this License from such
Contributor, and You become compliant prior to 30 days after Your receipt
of the notice.
5.2. If You initiate litigation against any entity by asserting a patent
infringement claim (excluding declaratory judgment actions,
counter-claims, and cross-claims) alleging that a Contributor Version
directly or indirectly infringes any patent, then the rights granted to
You by any and all Contributors for the Covered Software under Section
2.1 of this License shall terminate.
5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
license agreements (excluding distributors and resellers) which have been
validly granted by You or Your distributors under this License prior to
termination shall survive termination.
6. Disclaimer of Warranty
Covered Software is provided under this License on an "as is" basis,
without warranty of any kind, either expressed, implied, or statutory,
including, without limitation, warranties that the Covered Software is free
of defects, merchantable, fit for a particular purpose or non-infringing.
The entire risk as to the quality and performance of the Covered Software
is with You. Should any Covered Software prove defective in any respect,
You (not any Contributor) assume the cost of any necessary servicing,
repair, or correction. This disclaimer of warranty constitutes an essential
part of this License. No use of any Covered Software is authorized under
this License except under this disclaimer.
7. Limitation of Liability
Under no circumstances and under no legal theory, whether tort (including
negligence), contract, or otherwise, shall any Contributor, or anyone who
distributes Covered Software as permitted above, be liable to You for any
direct, indirect, special, incidental, or consequential damages of any
character including, without limitation, damages for lost profits, loss of
goodwill, work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses, even if such party shall have been
informed of the possibility of such damages. This limitation of liability
shall not apply to liability for death or personal injury resulting from
such party's negligence to the extent applicable law prohibits such
limitation. Some jurisdictions do not allow the exclusion or limitation of
incidental or consequential damages, so this exclusion and limitation may
not apply to You.
8. Litigation
Any litigation relating to this License may be brought only in the courts
of a jurisdiction where the defendant maintains its principal place of
business and such litigation shall be governed by laws of that
jurisdiction, without reference to its conflict-of-law provisions. Nothing
in this Section shall prevent a party's ability to bring cross-claims or
counter-claims.
9. Miscellaneous
This License represents the complete agreement concerning the subject
matter hereof. If any provision of this License is held to be
unenforceable, such provision shall be reformed only to the extent
necessary to make it enforceable. Any law or regulation which provides that
the language of a contract shall be construed against the drafter shall not
be used to construe this License against a Contributor.
10. Versions of the License
10.1. New Versions
Mozilla Foundation is the license steward. Except as provided in Section
10.3, no one other than the license steward has the right to modify or
publish new versions of this License. Each version will be given a
distinguishing version number.
10.2. Effect of New Versions
You may distribute the Covered Software under the terms of the version
of the License under which You originally received the Covered Software,
or under the terms of any subsequent version published by the license
steward.
10.3. Modified Versions
If you create software not governed by this License, and you want to
create a new license for such software, you may create and use a
modified version of this License if you rename the license and remove
any references to the name of the license steward (except to note that
such modified license differs from this License).
10.4. Distributing Source Code Form that is Incompatible With Secondary
Licenses If You choose to distribute Source Code Form that is
Incompatible With Secondary Licenses under the terms of this version of
the License, the notice described in Exhibit B of this License must be
attached.
Exhibit A - Source Code Form License Notice
This Source Code Form is subject to the
terms of the Mozilla Public License, v.
2.0. If a copy of the MPL was not
distributed with this file, You can
obtain one at
http://mozilla.org/MPL/2.0/.
If it is not possible or desirable to put the notice in a particular file,
then You may include the notice in a location (such as a LICENSE file in a
relevant directory) where a recipient would be likely to look for such a
notice.
You may add additional accurate notices of copyright ownership.
Exhibit B - "Incompatible With Secondary Licenses" Notice
This Source Code Form is "Incompatible
With Secondary Licenses", as defined by
the Mozilla Public License, v. 2.0.

8
vendor/github.com/hashicorp/go-secure-stdlib/strutil/go.mod generated vendored Normal file
View File

@ -0,0 +1,8 @@
module github.com/hashicorp/go-secure-stdlib/strutil
go 1.16
require (
github.com/ryanuber/go-glob v1.0.0
github.com/stretchr/testify v1.7.0
)

13
vendor/github.com/hashicorp/go-secure-stdlib/strutil/go.sum generated vendored Normal file
View File

@ -0,0 +1,13 @@
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/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/ryanuber/go-glob v1.0.0 h1:iQh3xXAumdQ+4Ufa5b25cRpC5TYKlno6hsv6Cb3pkBk=
github.com/ryanuber/go-glob v1.0.0/go.mod h1:807d1WSdnB0XRJzKNil9Om6lcp/3a0v4qIHxIXzX/Yc=
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=
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=

508
vendor/github.com/hashicorp/go-secure-stdlib/strutil/strutil.go generated vendored Normal file
View File

@ -0,0 +1,508 @@
package strutil
import (
"encoding/base64"
"encoding/json"
"fmt"
"sort"
"strings"
"unicode"
glob "github.com/ryanuber/go-glob"
)
// StrListContainsGlob looks for a string in a list of strings and allows
// globs.
func StrListContainsGlob(haystack []string, needle string) bool {
for _, item := range haystack {
if glob.Glob(item, needle) {
return true
}
}
return false
}
// StrListContains looks for a string in a list of strings.
func StrListContains(haystack []string, needle string) bool {
for _, item := range haystack {
if item == needle {
return true
}
}
return false
}
// StrListContainsCaseInsensitive looks for a string in a list of strings.
func StrListContainsCaseInsensitive(haystack []string, needle string) bool {
for _, item := range haystack {
if strings.EqualFold(item, needle) {
return true
}
}
return false
}
// StrListSubset checks if a given list is a subset
// of another set
func StrListSubset(super, sub []string) bool {
for _, item := range sub {
if !StrListContains(super, item) {
return false
}
}
return true
}
// ParseDedupAndSortStrings parses a comma separated list of strings
// into a slice of strings. The return slice will be sorted and will
// not contain duplicate or empty items.
func ParseDedupAndSortStrings(input string, sep string) []string {
input = strings.TrimSpace(input)
parsed := []string{}
if input == "" {
// Don't return nil
return parsed
}
return RemoveDuplicates(strings.Split(input, sep), false)
}
// ParseDedupLowercaseAndSortStrings parses a comma separated list of
// strings into a slice of strings. The return slice will be sorted and
// will not contain duplicate or empty items. The values will be converted
// to lower case.
func ParseDedupLowercaseAndSortStrings(input string, sep string) []string {
input = strings.TrimSpace(input)
parsed := []string{}
if input == "" {
// Don't return nil
return parsed
}
return RemoveDuplicates(strings.Split(input, sep), true)
}
// ParseKeyValues parses a comma separated list of `<key>=<value>` tuples
// into a map[string]string.
func ParseKeyValues(input string, out map[string]string, sep string) error {
if out == nil {
return fmt.Errorf("'out is nil")
}
keyValues := ParseDedupLowercaseAndSortStrings(input, sep)
if len(keyValues) == 0 {
return nil
}
for _, keyValue := range keyValues {
shards := strings.Split(keyValue, "=")
if len(shards) != 2 {
return fmt.Errorf("invalid <key,value> format")
}
key := strings.TrimSpace(shards[0])
value := strings.TrimSpace(shards[1])
if key == "" || value == "" {
return fmt.Errorf("invalid <key,value> pair: key: %q value: %q", key, value)
}
out[key] = value
}
return nil
}
// ParseArbitraryKeyValues parses arbitrary <key,value> tuples. The input
// can be one of the following:
// * JSON string
// * Base64 encoded JSON string
// * Comma separated list of `<key>=<value>` pairs
// * Base64 encoded string containing comma separated list of
// `<key>=<value>` pairs
//
// Input will be parsed into the output parameter, which should
// be a non-nil map[string]string.
func ParseArbitraryKeyValues(input string, out map[string]string, sep string) error {
input = strings.TrimSpace(input)
if input == "" {
return nil
}
if out == nil {
return fmt.Errorf("'out' is nil")
}
// Try to base64 decode the input. If successful, consider the decoded
// value as input.
inputBytes, err := base64.StdEncoding.DecodeString(input)
if err == nil {
input = string(inputBytes)
}
// Try to JSON unmarshal the input. If successful, consider that the
// metadata was supplied as JSON input.
err = json.Unmarshal([]byte(input), &out)
if err != nil {
// If JSON unmarshaling fails, consider that the input was
// supplied as a comma separated string of 'key=value' pairs.
if err = ParseKeyValues(input, out, sep); err != nil {
return fmt.Errorf("failed to parse the input: %w", err)
}
}
// Validate the parsed input
for key, value := range out {
if key != "" && value == "" {
return fmt.Errorf("invalid value for key %q", key)
}
}
return nil
}
// ParseStringSlice parses a `sep`-separated list of strings into a
// []string with surrounding whitespace removed.
//
// The output will always be a valid slice but may be of length zero.
func ParseStringSlice(input string, sep string) []string {
input = strings.TrimSpace(input)
if input == "" {
return []string{}
}
splitStr := strings.Split(input, sep)
ret := make([]string, len(splitStr))
for i, val := range splitStr {
ret[i] = strings.TrimSpace(val)
}
return ret
}
// ParseArbitraryStringSlice parses arbitrary string slice. The input
// can be one of the following:
// * JSON string
// * Base64 encoded JSON string
// * `sep` separated list of values
// * Base64-encoded string containing a `sep` separated list of values
//
// Note that the separator is ignored if the input is found to already be in a
// structured format (e.g., JSON)
//
// The output will always be a valid slice but may be of length zero.
func ParseArbitraryStringSlice(input string, sep string) []string {
input = strings.TrimSpace(input)
if input == "" {
return []string{}
}
// Try to base64 decode the input. If successful, consider the decoded
// value as input.
inputBytes, err := base64.StdEncoding.DecodeString(input)
if err == nil {
input = string(inputBytes)
}
ret := []string{}
// Try to JSON unmarshal the input. If successful, consider that the
// metadata was supplied as JSON input.
err = json.Unmarshal([]byte(input), &ret)
if err != nil {
// If JSON unmarshaling fails, consider that the input was
// supplied as a separated string of values.
return ParseStringSlice(input, sep)
}
if ret == nil {
return []string{}
}
return ret
}
// TrimStrings takes a slice of strings and returns a slice of strings
// with trimmed spaces
func TrimStrings(items []string) []string {
ret := make([]string, len(items))
for i, item := range items {
ret[i] = strings.TrimSpace(item)
}
return ret
}
// RemoveDuplicates removes duplicate and empty elements from a slice of
// strings. This also may convert the items in the slice to lower case and
// returns a sorted slice.
func RemoveDuplicates(items []string, lowercase bool) []string {
itemsMap := map[string]bool{}
for _, item := range items {
item = strings.TrimSpace(item)
if lowercase {
item = strings.ToLower(item)
}
if item == "" {
continue
}
itemsMap[item] = true
}
items = make([]string, 0, len(itemsMap))
for item := range itemsMap {
items = append(items, item)
}
sort.Strings(items)
return items
}
// RemoveDuplicatesStable removes duplicate and empty elements from a slice of
// strings, preserving order (and case) of the original slice.
// In all cases, strings are compared after trimming whitespace
// If caseInsensitive, strings will be compared after ToLower()
func RemoveDuplicatesStable(items []string, caseInsensitive bool) []string {
itemsMap := make(map[string]bool, len(items))
deduplicated := make([]string, 0, len(items))
for _, item := range items {
key := strings.TrimSpace(item)
if caseInsensitive {
key = strings.ToLower(key)
}
if key == "" || itemsMap[key] {
continue
}
itemsMap[key] = true
deduplicated = append(deduplicated, item)
}
return deduplicated
}
// RemoveEmpty removes empty elements from a slice of
// strings
func RemoveEmpty(items []string) []string {
if len(items) == 0 {
return items
}
itemsSlice := make([]string, 0, len(items))
for _, item := range items {
if item == "" {
continue
}
itemsSlice = append(itemsSlice, item)
}
return itemsSlice
}
// EquivalentSlices checks whether the given string sets are equivalent, as in,
// they contain the same values.
func EquivalentSlices(a, b []string) bool {
if a == nil && b == nil {
return true
}
if a == nil || b == nil {
return false
}
// First we'll build maps to ensure unique values
mapA := map[string]bool{}
mapB := map[string]bool{}
for _, keyA := range a {
mapA[keyA] = true
}
for _, keyB := range b {
mapB[keyB] = true
}
// Now we'll build our checking slices
var sortedA, sortedB []string
for keyA := range mapA {
sortedA = append(sortedA, keyA)
}
for keyB := range mapB {
sortedB = append(sortedB, keyB)
}
sort.Strings(sortedA)
sort.Strings(sortedB)
// Finally, compare
if len(sortedA) != len(sortedB) {
return false
}
for i := range sortedA {
if sortedA[i] != sortedB[i] {
return false
}
}
return true
}
// EqualStringMaps tests whether two map[string]string objects are equal.
// Equal means both maps have the same sets of keys and values. This function
// is 6-10x faster than a call to reflect.DeepEqual().
func EqualStringMaps(a, b map[string]string) bool {
if len(a) != len(b) {
return false
}
for k := range a {
v, ok := b[k]
if !ok || a[k] != v {
return false
}
}
return true
}
// StrListDelete removes the first occurrence of the given item from the slice
// of strings if the item exists.
func StrListDelete(s []string, d string) []string {
if s == nil {
return s
}
for index, element := range s {
if element == d {
return append(s[:index], s[index+1:]...)
}
}
return s
}
// GlobbedStringsMatch compares item to val with support for a leading and/or
// trailing wildcard '*' in item.
func GlobbedStringsMatch(item, val string) bool {
if len(item) < 2 {
return val == item
}
hasPrefix := strings.HasPrefix(item, "*")
hasSuffix := strings.HasSuffix(item, "*")
if hasPrefix && hasSuffix {
return strings.Contains(val, item[1:len(item)-1])
} else if hasPrefix {
return strings.HasSuffix(val, item[1:])
} else if hasSuffix {
return strings.HasPrefix(val, item[:len(item)-1])
}
return val == item
}
// AppendIfMissing adds a string to a slice if the given string is not present
func AppendIfMissing(slice []string, i string) []string {
if StrListContains(slice, i) {
return slice
}
return append(slice, i)
}
// MergeSlices adds an arbitrary number of slices together, uniquely
func MergeSlices(args ...[]string) []string {
all := map[string]struct{}{}
for _, slice := range args {
for _, v := range slice {
all[v] = struct{}{}
}
}
result := make([]string, 0, len(all))
for k := range all {
result = append(result, k)
}
sort.Strings(result)
return result
}
// Difference returns the set difference (A - B) of the two given slices. The
// result will also remove any duplicated values in set A regardless of whether
// that matches any values in set B.
func Difference(a, b []string, lowercase bool) []string {
if len(a) == 0 {
return a
}
if len(b) == 0 {
if !lowercase {
return a
}
newA := make([]string, len(a))
for i, v := range a {
newA[i] = strings.ToLower(v)
}
return newA
}
a = RemoveDuplicates(a, lowercase)
b = RemoveDuplicates(b, lowercase)
itemsMap := map[string]bool{}
for _, aVal := range a {
itemsMap[aVal] = true
}
// Perform difference calculation
for _, bVal := range b {
if _, ok := itemsMap[bVal]; ok {
itemsMap[bVal] = false
}
}
items := []string{}
for item, exists := range itemsMap {
if exists {
items = append(items, item)
}
}
sort.Strings(items)
return items
}
// GetString attempts to retrieve a value from the provided map and assert that it is a string. If the key does not
// exist in the map, this will return an empty string. If the key exists, but the value is not a string type, this will
// return an error. If no map or key is provied, this will return an error
func GetString(m map[string]interface{}, key string) (string, error) {
if m == nil {
return "", fmt.Errorf("missing map")
}
if key == "" {
return "", fmt.Errorf("missing key")
}
rawVal, ok := m[key]
if !ok {
return "", nil
}
str, ok := rawVal.(string)
if !ok {
return "", fmt.Errorf("invalid value at %s: is a %T", key, rawVal)
}
return str, nil
}
// Printable returns true if all characters in the string are printable
// according to Unicode
func Printable(s string) bool {
return strings.IndexFunc(s, func(c rune) bool {
return !unicode.IsPrint(c)
}) == -1
}
// StringListToInterfaceList simply takes a []string and turns it into a
// []interface{} to satisfy the input requirements for other library functions
func StringListToInterfaceList(in []string) []interface{} {
ret := make([]interface{}, len(in))
for i, v := range in {
ret[i] = v
}
return ret
}
// Reverse reverses the input string
func Reverse(in string) string {
l := len(in)
out := make([]byte, l)
for i := 0; i <= l/2; i++ {
out[i], out[l-1-i] = in[l-1-i], in[i]
}
return string(out)
}

12
vendor/github.com/hashicorp/go-uuid/.travis.yml generated vendored Normal file
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@ -0,0 +1,12 @@
language: go
sudo: false
go:
- 1.4
- 1.5
- 1.6
- tip
script:
- go test -bench . -benchmem -v ./...

363
vendor/github.com/hashicorp/go-uuid/LICENSE generated vendored Normal file
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@ -0,0 +1,363 @@
Mozilla Public License, version 2.0
1. Definitions
1.1. "Contributor"
means each individual or legal entity that creates, contributes to the
creation of, or owns Covered Software.
1.2. "Contributor Version"
means the combination of the Contributions of others (if any) used by a
Contributor and that particular Contributor's Contribution.
1.3. "Contribution"
means Covered Software of a particular Contributor.
1.4. "Covered Software"
means Source Code Form to which the initial Contributor has attached the
notice in Exhibit A, the Executable Form of such Source Code Form, and
Modifications of such Source Code Form, in each case including portions
thereof.
1.5. "Incompatible With Secondary Licenses"
means
a. that the initial Contributor has attached the notice described in
Exhibit B to the Covered Software; or
b. that the Covered Software was made available under the terms of
version 1.1 or earlier of the License, but not also under the terms of
a Secondary License.
1.6. "Executable Form"
means any form of the work other than Source Code Form.
1.7. "Larger Work"
means a work that combines Covered Software with other material, in a
separate file or files, that is not Covered Software.
1.8. "License"
means this document.
1.9. "Licensable"
means having the right to grant, to the maximum extent possible, whether
at the time of the initial grant or subsequently, any and all of the
rights conveyed by this License.
1.10. "Modifications"
means any of the following:
a. any file in Source Code Form that results from an addition to,
deletion from, or modification of the contents of Covered Software; or
b. any new file in Source Code Form that contains any Covered Software.
1.11. "Patent Claims" of a Contributor
means any patent claim(s), including without limitation, method,
process, and apparatus claims, in any patent Licensable by such
Contributor that would be infringed, but for the grant of the License,
by the making, using, selling, offering for sale, having made, import,
or transfer of either its Contributions or its Contributor Version.
1.12. "Secondary License"
means either the GNU General Public License, Version 2.0, the GNU Lesser
General Public License, Version 2.1, the GNU Affero General Public
License, Version 3.0, or any later versions of those licenses.
1.13. "Source Code Form"
means the form of the work preferred for making modifications.
1.14. "You" (or "Your")
means an individual or a legal entity exercising rights under this
License. For legal entities, "You" includes any entity that controls, is
controlled by, or is under common control with You. For purposes of this
definition, "control" means (a) the power, direct or indirect, to cause
the direction or management of such entity, whether by contract or
otherwise, or (b) ownership of more than fifty percent (50%) of the
outstanding shares or beneficial ownership of such entity.
2. License Grants and Conditions
2.1. Grants
Each Contributor hereby grants You a world-wide, royalty-free,
non-exclusive license:
a. under intellectual property rights (other than patent or trademark)
Licensable by such Contributor to use, reproduce, make available,
modify, display, perform, distribute, and otherwise exploit its
Contributions, either on an unmodified basis, with Modifications, or
as part of a Larger Work; and
b. under Patent Claims of such Contributor to make, use, sell, offer for
sale, have made, import, and otherwise transfer either its
Contributions or its Contributor Version.
2.2. Effective Date
The licenses granted in Section 2.1 with respect to any Contribution
become effective for each Contribution on the date the Contributor first
distributes such Contribution.
2.3. Limitations on Grant Scope
The licenses granted in this Section 2 are the only rights granted under
this License. No additional rights or licenses will be implied from the
distribution or licensing of Covered Software under this License.
Notwithstanding Section 2.1(b) above, no patent license is granted by a
Contributor:
a. for any code that a Contributor has removed from Covered Software; or
b. for infringements caused by: (i) Your and any other third party's
modifications of Covered Software, or (ii) the combination of its
Contributions with other software (except as part of its Contributor
Version); or
c. under Patent Claims infringed by Covered Software in the absence of
its Contributions.
This License does not grant any rights in the trademarks, service marks,
or logos of any Contributor (except as may be necessary to comply with
the notice requirements in Section 3.4).
2.4. Subsequent Licenses
No Contributor makes additional grants as a result of Your choice to
distribute the Covered Software under a subsequent version of this
License (see Section 10.2) or under the terms of a Secondary License (if
permitted under the terms of Section 3.3).
2.5. Representation
Each Contributor represents that the Contributor believes its
Contributions are its original creation(s) or it has sufficient rights to
grant the rights to its Contributions conveyed by this License.
2.6. Fair Use
This License is not intended to limit any rights You have under
applicable copyright doctrines of fair use, fair dealing, or other
equivalents.
2.7. Conditions
Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
Section 2.1.
3. Responsibilities
3.1. Distribution of Source Form
All distribution of Covered Software in Source Code Form, including any
Modifications that You create or to which You contribute, must be under
the terms of this License. You must inform recipients that the Source
Code Form of the Covered Software is governed by the terms of this
License, and how they can obtain a copy of this License. You may not
attempt to alter or restrict the recipients' rights in the Source Code
Form.
3.2. Distribution of Executable Form
If You distribute Covered Software in Executable Form then:
a. such Covered Software must also be made available in Source Code Form,
as described in Section 3.1, and You must inform recipients of the
Executable Form how they can obtain a copy of such Source Code Form by
reasonable means in a timely manner, at a charge no more than the cost
of distribution to the recipient; and
b. You may distribute such Executable Form under the terms of this
License, or sublicense it under different terms, provided that the
license for the Executable Form does not attempt to limit or alter the
recipients' rights in the Source Code Form under this License.
3.3. Distribution of a Larger Work
You may create and distribute a Larger Work under terms of Your choice,
provided that You also comply with the requirements of this License for
the Covered Software. If the Larger Work is a combination of Covered
Software with a work governed by one or more Secondary Licenses, and the
Covered Software is not Incompatible With Secondary Licenses, this
License permits You to additionally distribute such Covered Software
under the terms of such Secondary License(s), so that the recipient of
the Larger Work may, at their option, further distribute the Covered
Software under the terms of either this License or such Secondary
License(s).
3.4. Notices
You may not remove or alter the substance of any license notices
(including copyright notices, patent notices, disclaimers of warranty, or
limitations of liability) contained within the Source Code Form of the
Covered Software, except that You may alter any license notices to the
extent required to remedy known factual inaccuracies.
3.5. Application of Additional Terms
You may choose to offer, and to charge a fee for, warranty, support,
indemnity or liability obligations to one or more recipients of Covered
Software. However, You may do so only on Your own behalf, and not on
behalf of any Contributor. You must make it absolutely clear that any
such warranty, support, indemnity, or liability obligation is offered by
You alone, and You hereby agree to indemnify every Contributor for any
liability incurred by such Contributor as a result of warranty, support,
indemnity or liability terms You offer. You may include additional
disclaimers of warranty and limitations of liability specific to any
jurisdiction.
4. Inability to Comply Due to Statute or Regulation
If it is impossible for You to comply with any of the terms of this License
with respect to some or all of the Covered Software due to statute,
judicial order, or regulation then You must: (a) comply with the terms of
this License to the maximum extent possible; and (b) describe the
limitations and the code they affect. Such description must be placed in a
text file included with all distributions of the Covered Software under
this License. Except to the extent prohibited by statute or regulation,
such description must be sufficiently detailed for a recipient of ordinary
skill to be able to understand it.
5. Termination
5.1. The rights granted under this License will terminate automatically if You
fail to comply with any of its terms. However, if You become compliant,
then the rights granted under this License from a particular Contributor
are reinstated (a) provisionally, unless and until such Contributor
explicitly and finally terminates Your grants, and (b) on an ongoing
basis, if such Contributor fails to notify You of the non-compliance by
some reasonable means prior to 60 days after You have come back into
compliance. Moreover, Your grants from a particular Contributor are
reinstated on an ongoing basis if such Contributor notifies You of the
non-compliance by some reasonable means, this is the first time You have
received notice of non-compliance with this License from such
Contributor, and You become compliant prior to 30 days after Your receipt
of the notice.
5.2. If You initiate litigation against any entity by asserting a patent
infringement claim (excluding declaratory judgment actions,
counter-claims, and cross-claims) alleging that a Contributor Version
directly or indirectly infringes any patent, then the rights granted to
You by any and all Contributors for the Covered Software under Section
2.1 of this License shall terminate.
5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
license agreements (excluding distributors and resellers) which have been
validly granted by You or Your distributors under this License prior to
termination shall survive termination.
6. Disclaimer of Warranty
Covered Software is provided under this License on an "as is" basis,
without warranty of any kind, either expressed, implied, or statutory,
including, without limitation, warranties that the Covered Software is free
of defects, merchantable, fit for a particular purpose or non-infringing.
The entire risk as to the quality and performance of the Covered Software
is with You. Should any Covered Software prove defective in any respect,
You (not any Contributor) assume the cost of any necessary servicing,
repair, or correction. This disclaimer of warranty constitutes an essential
part of this License. No use of any Covered Software is authorized under
this License except under this disclaimer.
7. Limitation of Liability
Under no circumstances and under no legal theory, whether tort (including
negligence), contract, or otherwise, shall any Contributor, or anyone who
distributes Covered Software as permitted above, be liable to You for any
direct, indirect, special, incidental, or consequential damages of any
character including, without limitation, damages for lost profits, loss of
goodwill, work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses, even if such party shall have been
informed of the possibility of such damages. This limitation of liability
shall not apply to liability for death or personal injury resulting from
such party's negligence to the extent applicable law prohibits such
limitation. Some jurisdictions do not allow the exclusion or limitation of
incidental or consequential damages, so this exclusion and limitation may
not apply to You.
8. Litigation
Any litigation relating to this License may be brought only in the courts
of a jurisdiction where the defendant maintains its principal place of
business and such litigation shall be governed by laws of that
jurisdiction, without reference to its conflict-of-law provisions. Nothing
in this Section shall prevent a party's ability to bring cross-claims or
counter-claims.
9. Miscellaneous
This License represents the complete agreement concerning the subject
matter hereof. If any provision of this License is held to be
unenforceable, such provision shall be reformed only to the extent
necessary to make it enforceable. Any law or regulation which provides that
the language of a contract shall be construed against the drafter shall not
be used to construe this License against a Contributor.
10. Versions of the License
10.1. New Versions
Mozilla Foundation is the license steward. Except as provided in Section
10.3, no one other than the license steward has the right to modify or
publish new versions of this License. Each version will be given a
distinguishing version number.
10.2. Effect of New Versions
You may distribute the Covered Software under the terms of the version
of the License under which You originally received the Covered Software,
or under the terms of any subsequent version published by the license
steward.
10.3. Modified Versions
If you create software not governed by this License, and you want to
create a new license for such software, you may create and use a
modified version of this License if you rename the license and remove
any references to the name of the license steward (except to note that
such modified license differs from this License).
10.4. Distributing Source Code Form that is Incompatible With Secondary
Licenses If You choose to distribute Source Code Form that is
Incompatible With Secondary Licenses under the terms of this version of
the License, the notice described in Exhibit B of this License must be
attached.
Exhibit A - Source Code Form License Notice
This Source Code Form is subject to the
terms of the Mozilla Public License, v.
2.0. If a copy of the MPL was not
distributed with this file, You can
obtain one at
http://mozilla.org/MPL/2.0/.
If it is not possible or desirable to put the notice in a particular file,
then You may include the notice in a location (such as a LICENSE file in a
relevant directory) where a recipient would be likely to look for such a
notice.
You may add additional accurate notices of copyright ownership.
Exhibit B - "Incompatible With Secondary Licenses" Notice
This Source Code Form is "Incompatible
With Secondary Licenses", as defined by
the Mozilla Public License, v. 2.0.

8
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# uuid [![Build Status](https://travis-ci.org/hashicorp/go-uuid.svg?branch=master)](https://travis-ci.org/hashicorp/go-uuid)
Generates UUID-format strings using high quality, _purely random_ bytes. It is **not** intended to be RFC compliant, merely to use a well-understood string representation of a 128-bit value. It can also parse UUID-format strings into their component bytes.
Documentation
=============
The full documentation is available on [Godoc](http://godoc.org/github.com/hashicorp/go-uuid).

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module github.com/hashicorp/go-uuid

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package uuid
import (
"crypto/rand"
"encoding/hex"
"fmt"
"io"
)
// GenerateRandomBytes is used to generate random bytes of given size.
func GenerateRandomBytes(size int) ([]byte, error) {
return GenerateRandomBytesWithReader(size, rand.Reader)
}
// GenerateRandomBytesWithReader is used to generate random bytes of given size read from a given reader.
func GenerateRandomBytesWithReader(size int, reader io.Reader) ([]byte, error) {
if reader == nil {
return nil, fmt.Errorf("provided reader is nil")
}
buf := make([]byte, size)
if _, err := io.ReadFull(reader, buf); err != nil {
return nil, fmt.Errorf("failed to read random bytes: %v", err)
}
return buf, nil
}
const uuidLen = 16
// GenerateUUID is used to generate a random UUID
func GenerateUUID() (string, error) {
return GenerateUUIDWithReader(rand.Reader)
}
// GenerateUUIDWithReader is used to generate a random UUID with a given Reader
func GenerateUUIDWithReader(reader io.Reader) (string, error) {
if reader == nil {
return "", fmt.Errorf("provided reader is nil")
}
buf, err := GenerateRandomBytesWithReader(uuidLen, reader)
if err != nil {
return "", err
}
return FormatUUID(buf)
}
func FormatUUID(buf []byte) (string, error) {
if buflen := len(buf); buflen != uuidLen {
return "", fmt.Errorf("wrong length byte slice (%d)", buflen)
}
return fmt.Sprintf("%x-%x-%x-%x-%x",
buf[0:4],
buf[4:6],
buf[6:8],
buf[8:10],
buf[10:16]), nil
}
func ParseUUID(uuid string) ([]byte, error) {
if len(uuid) != 2 * uuidLen + 4 {
return nil, fmt.Errorf("uuid string is wrong length")
}
if uuid[8] != '-' ||
uuid[13] != '-' ||
uuid[18] != '-' ||
uuid[23] != '-' {
return nil, fmt.Errorf("uuid is improperly formatted")
}
hexStr := uuid[0:8] + uuid[9:13] + uuid[14:18] + uuid[19:23] + uuid[24:36]
ret, err := hex.DecodeString(hexStr)
if err != nil {
return nil, err
}
if len(ret) != uuidLen {
return nil, fmt.Errorf("decoded hex is the wrong length")
}
return ret, nil
}

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language: go
go:
- 1.2
- 1.3
- 1.4
- 1.9
- "1.10"
- 1.11
- 1.12
script:
- go test

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Mozilla Public License, version 2.0
1. Definitions
1.1. “Contributor”
means each individual or legal entity that creates, contributes to the
creation of, or owns Covered Software.
1.2. “Contributor Version”
means the combination of the Contributions of others (if any) used by a
Contributor and that particular Contributor’s Contribution.
1.3. “Contribution”
means Covered Software of a particular Contributor.
1.4. “Covered Software”
means Source Code Form to which the initial Contributor has attached the
notice in Exhibit A, the Executable Form of such Source Code Form, and
Modifications of such Source Code Form, in each case including portions
thereof.
1.5. “Incompatible With Secondary Licenses”
means
a. that the initial Contributor has attached the notice described in
Exhibit B to the Covered Software; or
b. that the Covered Software was made available under the terms of version
1.1 or earlier of the License, but not also under the terms of a
Secondary License.
1.6. “Executable Form”
means any form of the work other than Source Code Form.
1.7. “Larger Work”
means a work that combines Covered Software with other material, in a separate
file or files, that is not Covered Software.
1.8. “License”
means this document.
1.9. “Licensable”
means having the right to grant, to the maximum extent possible, whether at the
time of the initial grant or subsequently, any and all of the rights conveyed by
this License.
1.10. “Modifications”
means any of the following:
a. any file in Source Code Form that results from an addition to, deletion
from, or modification of the contents of Covered Software; or
b. any new file in Source Code Form that contains any Covered Software.
1.11. “Patent Claims” of a Contributor
means any patent claim(s), including without limitation, method, process,
and apparatus claims, in any patent Licensable by such Contributor that
would be infringed, but for the grant of the License, by the making,
using, selling, offering for sale, having made, import, or transfer of
either its Contributions or its Contributor Version.
1.12. “Secondary License”
means either the GNU General Public License, Version 2.0, the GNU Lesser
General Public License, Version 2.1, the GNU Affero General Public
License, Version 3.0, or any later versions of those licenses.
1.13. “Source Code Form”
means the form of the work preferred for making modifications.
1.14. “You” (or “Your”)
means an individual or a legal entity exercising rights under this
License. For legal entities, “You” includes any entity that controls, is
controlled by, or is under common control with You. For purposes of this
definition, “control” means (a) the power, direct or indirect, to cause
the direction or management of such entity, whether by contract or
otherwise, or (b) ownership of more than fifty percent (50%) of the
outstanding shares or beneficial ownership of such entity.
2. License Grants and Conditions
2.1. Grants
Each Contributor hereby grants You a world-wide, royalty-free,
non-exclusive license:
a. under intellectual property rights (other than patent or trademark)
Licensable by such Contributor to use, reproduce, make available,
modify, display, perform, distribute, and otherwise exploit its
Contributions, either on an unmodified basis, with Modifications, or as
part of a Larger Work; and
b. under Patent Claims of such Contributor to make, use, sell, offer for
sale, have made, import, and otherwise transfer either its Contributions
or its Contributor Version.
2.2. Effective Date
The licenses granted in Section 2.1 with respect to any Contribution become
effective for each Contribution on the date the Contributor first distributes
such Contribution.
2.3. Limitations on Grant Scope
The licenses granted in this Section 2 are the only rights granted under this
License. No additional rights or licenses will be implied from the distribution
or licensing of Covered Software under this License. Notwithstanding Section
2.1(b) above, no patent license is granted by a Contributor:
a. for any code that a Contributor has removed from Covered Software; or
b. for infringements caused by: (i) Your and any other third party’s
modifications of Covered Software, or (ii) the combination of its
Contributions with other software (except as part of its Contributor
Version); or
c. under Patent Claims infringed by Covered Software in the absence of its
Contributions.
This License does not grant any rights in the trademarks, service marks, or
logos of any Contributor (except as may be necessary to comply with the
notice requirements in Section 3.4).
2.4. Subsequent Licenses
No Contributor makes additional grants as a result of Your choice to
distribute the Covered Software under a subsequent version of this License
(see Section 10.2) or under the terms of a Secondary License (if permitted
under the terms of Section 3.3).
2.5. Representation
Each Contributor represents that the Contributor believes its Contributions
are its original creation(s) or it has sufficient rights to grant the
rights to its Contributions conveyed by this License.
2.6. Fair Use
This License is not intended to limit any rights You have under applicable
copyright doctrines of fair use, fair dealing, or other equivalents.
2.7. Conditions
Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
Section 2.1.
3. Responsibilities
3.1. Distribution of Source Form
All distribution of Covered Software in Source Code Form, including any
Modifications that You create or to which You contribute, must be under the
terms of this License. You must inform recipients that the Source Code Form
of the Covered Software is governed by the terms of this License, and how
they can obtain a copy of this License. You may not attempt to alter or
restrict the recipients’ rights in the Source Code Form.
3.2. Distribution of Executable Form
If You distribute Covered Software in Executable Form then:
a. such Covered Software must also be made available in Source Code Form,
as described in Section 3.1, and You must inform recipients of the
Executable Form how they can obtain a copy of such Source Code Form by
reasonable means in a timely manner, at a charge no more than the cost
of distribution to the recipient; and
b. You may distribute such Executable Form under the terms of this License,
or sublicense it under different terms, provided that the license for
the Executable Form does not attempt to limit or alter the recipients’
rights in the Source Code Form under this License.
3.3. Distribution of a Larger Work
You may create and distribute a Larger Work under terms of Your choice,
provided that You also comply with the requirements of this License for the
Covered Software. If the Larger Work is a combination of Covered Software
with a work governed by one or more Secondary Licenses, and the Covered
Software is not Incompatible With Secondary Licenses, this License permits
You to additionally distribute such Covered Software under the terms of
such Secondary License(s), so that the recipient of the Larger Work may, at
their option, further distribute the Covered Software under the terms of
either this License or such Secondary License(s).
3.4. Notices
You may not remove or alter the substance of any license notices (including
copyright notices, patent notices, disclaimers of warranty, or limitations
of liability) contained within the Source Code Form of the Covered
Software, except that You may alter any license notices to the extent
required to remedy known factual inaccuracies.
3.5. Application of Additional Terms
You may choose to offer, and to charge a fee for, warranty, support,
indemnity or liability obligations to one or more recipients of Covered
Software. However, You may do so only on Your own behalf, and not on behalf
of any Contributor. You must make it absolutely clear that any such
warranty, support, indemnity, or liability obligation is offered by You
alone, and You hereby agree to indemnify every Contributor for any
liability incurred by such Contributor as a result of warranty, support,
indemnity or liability terms You offer. You may include additional
disclaimers of warranty and limitations of liability specific to any
jurisdiction.
4. Inability to Comply Due to Statute or Regulation
If it is impossible for You to comply with any of the terms of this License
with respect to some or all of the Covered Software due to statute, judicial
order, or regulation then You must: (a) comply with the terms of this License
to the maximum extent possible; and (b) describe the limitations and the code
they affect. Such description must be placed in a text file included with all
distributions of the Covered Software under this License. Except to the
extent prohibited by statute or regulation, such description must be
sufficiently detailed for a recipient of ordinary skill to be able to
understand it.
5. Termination
5.1. The rights granted under this License will terminate automatically if You
fail to comply with any of its terms. However, if You become compliant,
then the rights granted under this License from a particular Contributor
are reinstated (a) provisionally, unless and until such Contributor
explicitly and finally terminates Your grants, and (b) on an ongoing basis,
if such Contributor fails to notify You of the non-compliance by some
reasonable means prior to 60 days after You have come back into compliance.
Moreover, Your grants from a particular Contributor are reinstated on an
ongoing basis if such Contributor notifies You of the non-compliance by
some reasonable means, this is the first time You have received notice of
non-compliance with this License from such Contributor, and You become
compliant prior to 30 days after Your receipt of the notice.
5.2. If You initiate litigation against any entity by asserting a patent
infringement claim (excluding declaratory judgment actions, counter-claims,
and cross-claims) alleging that a Contributor Version directly or
indirectly infringes any patent, then the rights granted to You by any and
all Contributors for the Covered Software under Section 2.1 of this License
shall terminate.
5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
license agreements (excluding distributors and resellers) which have been
validly granted by You or Your distributors under this License prior to
termination shall survive termination.
6. Disclaimer of Warranty
Covered Software is provided under this License on an “as is” basis, without
warranty of any kind, either expressed, implied, or statutory, including,
without limitation, warranties that the Covered Software is free of defects,
merchantable, fit for a particular purpose or non-infringing. The entire
risk as to the quality and performance of the Covered Software is with You.
Should any Covered Software prove defective in any respect, You (not any
Contributor) assume the cost of any necessary servicing, repair, or
correction. This disclaimer of warranty constitutes an essential part of this
License. No use of any Covered Software is authorized under this License
except under this disclaimer.
7. Limitation of Liability
Under no circumstances and under no legal theory, whether tort (including
negligence), contract, or otherwise, shall any Contributor, or anyone who
distributes Covered Software as permitted above, be liable to You for any
direct, indirect, special, incidental, or consequential damages of any
character including, without limitation, damages for lost profits, loss of
goodwill, work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses, even if such party shall have been
informed of the possibility of such damages. This limitation of liability
shall not apply to liability for death or personal injury resulting from such
party’s negligence to the extent applicable law prohibits such limitation.
Some jurisdictions do not allow the exclusion or limitation of incidental or
consequential damages, so this exclusion and limitation may not apply to You.
8. Litigation
Any litigation relating to this License may be brought only in the courts of
a jurisdiction where the defendant maintains its principal place of business
and such litigation shall be governed by laws of that jurisdiction, without
reference to its conflict-of-law provisions. Nothing in this Section shall
prevent a party’s ability to bring cross-claims or counter-claims.
9. Miscellaneous
This License represents the complete agreement concerning the subject matter
hereof. If any provision of this License is held to be unenforceable, such
provision shall be reformed only to the extent necessary to make it
enforceable. Any law or regulation which provides that the language of a
contract shall be construed against the drafter shall not be used to construe
this License against a Contributor.
10. Versions of the License
10.1. New Versions
Mozilla Foundation is the license steward. Except as provided in Section
10.3, no one other than the license steward has the right to modify or
publish new versions of this License. Each version will be given a
distinguishing version number.
10.2. Effect of New Versions
You may distribute the Covered Software under the terms of the version of
the License under which You originally received the Covered Software, or
under the terms of any subsequent version published by the license
steward.
10.3. Modified Versions
If you create software not governed by this License, and you want to
create a new license for such software, you may create and use a modified
version of this License if you rename the license and remove any
references to the name of the license steward (except to note that such
modified license differs from this License).
10.4. Distributing Source Code Form that is Incompatible With Secondary Licenses
If You choose to distribute Source Code Form that is Incompatible With
Secondary Licenses under the terms of this version of the License, the
notice described in Exhibit B of this License must be attached.
Exhibit A - Source Code Form License Notice
This Source Code Form is subject to the
terms of the Mozilla Public License, v.
2.0. If a copy of the MPL was not
distributed with this file, You can
obtain one at
http://mozilla.org/MPL/2.0/.
If it is not possible or desirable to put the notice in a particular file, then
You may include the notice in a location (such as a LICENSE file in a relevant
directory) where a recipient would be likely to look for such a notice.
You may add additional accurate notices of copyright ownership.
Exhibit B - “Incompatible With Secondary Licenses” Notice
This Source Code Form is “Incompatible
With Secondary Licenses”, as defined by
the Mozilla Public License, v. 2.0.

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# Versioning Library for Go
[![Build Status](https://travis-ci.org/hashicorp/go-version.svg?branch=master)](https://travis-ci.org/hashicorp/go-version)
go-version is a library for parsing versions and version constraints,
and verifying versions against a set of constraints. go-version
can sort a collection of versions properly, handles prerelease/beta
versions, can increment versions, etc.
Versions used with go-version must follow [SemVer](http://semver.org/).
## Installation and Usage
Package documentation can be found on
[GoDoc](http://godoc.org/github.com/hashicorp/go-version).
Installation can be done with a normal `go get`:
```
$ go get github.com/hashicorp/go-version
```
#### Version Parsing and Comparison
```go
v1, err := version.NewVersion("1.2")
v2, err := version.NewVersion("1.5+metadata")
// Comparison example. There is also GreaterThan, Equal, and just
// a simple Compare that returns an int allowing easy >=, <=, etc.
if v1.LessThan(v2) {
fmt.Printf("%s is less than %s", v1, v2)
}
```
#### Version Constraints
```go
v1, err := version.NewVersion("1.2")
// Constraints example.
constraints, err := version.NewConstraint(">= 1.0, < 1.4")
if constraints.Check(v1) {
fmt.Printf("%s satisfies constraints %s", v1, constraints)
}
```
#### Version Sorting
```go
versionsRaw := []string{"1.1", "0.7.1", "1.4-beta", "1.4", "2"}
versions := make([]*version.Version, len(versionsRaw))
for i, raw := range versionsRaw {
v, _ := version.NewVersion(raw)
versions[i] = v
}
// After this, the versions are properly sorted
sort.Sort(version.Collection(versions))
```
## Issues and Contributing
If you find an issue with this library, please report an issue. If you'd
like, we welcome any contributions. Fork this library and submit a pull
request.

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package version
import (
"fmt"
"reflect"
"regexp"
"strings"
)
// Constraint represents a single constraint for a version, such as
// ">= 1.0".
type Constraint struct {
f constraintFunc
check *Version
original string
}
// Constraints is a slice of constraints. We make a custom type so that
// we can add methods to it.
type Constraints []*Constraint
type constraintFunc func(v, c *Version) bool
var constraintOperators map[string]constraintFunc
var constraintRegexp *regexp.Regexp
func init() {
constraintOperators = map[string]constraintFunc{
"": constraintEqual,
"=": constraintEqual,
"!=": constraintNotEqual,
">": constraintGreaterThan,
"<": constraintLessThan,
">=": constraintGreaterThanEqual,
"<=": constraintLessThanEqual,
"~>": constraintPessimistic,
}
ops := make([]string, 0, len(constraintOperators))
for k := range constraintOperators {
ops = append(ops, regexp.QuoteMeta(k))
}
constraintRegexp = regexp.MustCompile(fmt.Sprintf(
`^\s*(%s)\s*(%s)\s*$`,
strings.Join(ops, "|"),
VersionRegexpRaw))
}
// NewConstraint will parse one or more constraints from the given
// constraint string. The string must be a comma-separated list of
// constraints.
func NewConstraint(v string) (Constraints, error) {
vs := strings.Split(v, ",")
result := make([]*Constraint, len(vs))
for i, single := range vs {
c, err := parseSingle(single)
if err != nil {
return nil, err
}
result[i] = c
}
return Constraints(result), nil
}
// Check tests if a version satisfies all the constraints.
func (cs Constraints) Check(v *Version) bool {
for _, c := range cs {
if !c.Check(v) {
return false
}
}
return true
}
// Returns the string format of the constraints
func (cs Constraints) String() string {
csStr := make([]string, len(cs))
for i, c := range cs {
csStr[i] = c.String()
}
return strings.Join(csStr, ",")
}
// Check tests if a constraint is validated by the given version.
func (c *Constraint) Check(v *Version) bool {
return c.f(v, c.check)
}
func (c *Constraint) String() string {
return c.original
}
func parseSingle(v string) (*Constraint, error) {
matches := constraintRegexp.FindStringSubmatch(v)
if matches == nil {
return nil, fmt.Errorf("Malformed constraint: %s", v)
}
check, err := NewVersion(matches[2])
if err != nil {
return nil, err
}
return &Constraint{
f: constraintOperators[matches[1]],
check: check,
original: v,
}, nil
}
func prereleaseCheck(v, c *Version) bool {
switch vPre, cPre := v.Prerelease() != "", c.Prerelease() != ""; {
case cPre && vPre:
// A constraint with a pre-release can only match a pre-release version
// with the same base segments.
return reflect.DeepEqual(c.Segments64(), v.Segments64())
case !cPre && vPre:
// A constraint without a pre-release can only match a version without a
// pre-release.
return false
case cPre && !vPre:
// OK, except with the pessimistic operator
case !cPre && !vPre:
// OK
}
return true
}
//-------------------------------------------------------------------
// Constraint functions
//-------------------------------------------------------------------
func constraintEqual(v, c *Version) bool {
return v.Equal(c)
}
func constraintNotEqual(v, c *Version) bool {
return !v.Equal(c)
}
func constraintGreaterThan(v, c *Version) bool {
return prereleaseCheck(v, c) && v.Compare(c) == 1
}
func constraintLessThan(v, c *Version) bool {
return prereleaseCheck(v, c) && v.Compare(c) == -1
}
func constraintGreaterThanEqual(v, c *Version) bool {
return prereleaseCheck(v, c) && v.Compare(c) >= 0
}
func constraintLessThanEqual(v, c *Version) bool {
return prereleaseCheck(v, c) && v.Compare(c) <= 0
}
func constraintPessimistic(v, c *Version) bool {
// Using a pessimistic constraint with a pre-release, restricts versions to pre-releases
if !prereleaseCheck(v, c) || (c.Prerelease() != "" && v.Prerelease() == "") {
return false
}
// If the version being checked is naturally less than the constraint, then there
// is no way for the version to be valid against the constraint
if v.LessThan(c) {
return false
}
// We'll use this more than once, so grab the length now so it's a little cleaner
// to write the later checks
cs := len(c.segments)
// If the version being checked has less specificity than the constraint, then there
// is no way for the version to be valid against the constraint
if cs > len(v.segments) {
return false
}
// Check the segments in the constraint against those in the version. If the version
// being checked, at any point, does not have the same values in each index of the
// constraints segments, then it cannot be valid against the constraint.
for i := 0; i < c.si-1; i++ {
if v.segments[i] != c.segments[i] {
return false
}
}
// Check the last part of the segment in the constraint. If the version segment at
// this index is less than the constraints segment at this index, then it cannot
// be valid against the constraint
if c.segments[cs-1] > v.segments[cs-1] {
return false
}
// If nothing has rejected the version by now, it's valid
return true
}

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module github.com/hashicorp/go-version

380
vendor/github.com/hashicorp/go-version/version.go generated vendored Normal file
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package version
import (
"bytes"
"fmt"
"reflect"
"regexp"
"strconv"
"strings"
)
// The compiled regular expression used to test the validity of a version.
var (
versionRegexp *regexp.Regexp
semverRegexp *regexp.Regexp
)
// The raw regular expression string used for testing the validity
// of a version.
const (
VersionRegexpRaw string = `v?([0-9]+(\.[0-9]+)*?)` +
`(-([0-9]+[0-9A-Za-z\-~]*(\.[0-9A-Za-z\-~]+)*)|(-?([A-Za-z\-~]+[0-9A-Za-z\-~]*(\.[0-9A-Za-z\-~]+)*)))?` +
`(\+([0-9A-Za-z\-~]+(\.[0-9A-Za-z\-~]+)*))?` +
`?`
// SemverRegexpRaw requires a separator between version and prerelease
SemverRegexpRaw string = `v?([0-9]+(\.[0-9]+)*?)` +
`(-([0-9]+[0-9A-Za-z\-~]*(\.[0-9A-Za-z\-~]+)*)|(-([A-Za-z\-~]+[0-9A-Za-z\-~]*(\.[0-9A-Za-z\-~]+)*)))?` +
`(\+([0-9A-Za-z\-~]+(\.[0-9A-Za-z\-~]+)*))?` +
`?`
)
// Version represents a single version.
type Version struct {
metadata string
pre string
segments []int64
si int
original string
}
func init() {
versionRegexp = regexp.MustCompile("^" + VersionRegexpRaw + "$")
semverRegexp = regexp.MustCompile("^" + SemverRegexpRaw + "$")
}
// NewVersion parses the given version and returns a new
// Version.
func NewVersion(v string) (*Version, error) {
return newVersion(v, versionRegexp)
}
// NewSemver parses the given version and returns a new
// Version that adheres strictly to SemVer specs
// https://semver.org/
func NewSemver(v string) (*Version, error) {
return newVersion(v, semverRegexp)
}
func newVersion(v string, pattern *regexp.Regexp) (*Version, error) {
matches := pattern.FindStringSubmatch(v)
if matches == nil {
return nil, fmt.Errorf("Malformed version: %s", v)
}
segmentsStr := strings.Split(matches[1], ".")
segments := make([]int64, len(segmentsStr))
si := 0
for i, str := range segmentsStr {
val, err := strconv.ParseInt(str, 10, 64)
if err != nil {
return nil, fmt.Errorf(
"Error parsing version: %s", err)
}
segments[i] = int64(val)
si++
}
// Even though we could support more than three segments, if we
// got less than three, pad it with 0s. This is to cover the basic
// default usecase of semver, which is MAJOR.MINOR.PATCH at the minimum
for i := len(segments); i < 3; i++ {
segments = append(segments, 0)
}
pre := matches[7]
if pre == "" {
pre = matches[4]
}
return &Version{
metadata: matches[10],
pre: pre,
segments: segments,
si: si,
original: v,
}, nil
}
// Must is a helper that wraps a call to a function returning (*Version, error)
// and panics if error is non-nil.
func Must(v *Version, err error) *Version {
if err != nil {
panic(err)
}
return v
}
// Compare compares this version to another version. This
// returns -1, 0, or 1 if this version is smaller, equal,
// or larger than the other version, respectively.
//
// If you want boolean results, use the LessThan, Equal,
// GreaterThan, GreaterThanOrEqual or LessThanOrEqual methods.
func (v *Version) Compare(other *Version) int {
// A quick, efficient equality check
if v.String() == other.String() {
return 0
}
segmentsSelf := v.Segments64()
segmentsOther := other.Segments64()
// If the segments are the same, we must compare on prerelease info
if reflect.DeepEqual(segmentsSelf, segmentsOther) {
preSelf := v.Prerelease()
preOther := other.Prerelease()
if preSelf == "" && preOther == "" {
return 0
}
if preSelf == "" {
return 1
}
if preOther == "" {
return -1
}
return comparePrereleases(preSelf, preOther)
}
// Get the highest specificity (hS), or if they're equal, just use segmentSelf length
lenSelf := len(segmentsSelf)
lenOther := len(segmentsOther)
hS := lenSelf
if lenSelf < lenOther {
hS = lenOther
}
// Compare the segments
// Because a constraint could have more/less specificity than the version it's
// checking, we need to account for a lopsided or jagged comparison
for i := 0; i < hS; i++ {
if i > lenSelf-1 {
// This means Self had the lower specificity
// Check to see if the remaining segments in Other are all zeros
if !allZero(segmentsOther[i:]) {
// if not, it means that Other has to be greater than Self
return -1
}
break
} else if i > lenOther-1 {
// this means Other had the lower specificity
// Check to see if the remaining segments in Self are all zeros -
if !allZero(segmentsSelf[i:]) {
//if not, it means that Self has to be greater than Other
return 1
}
break
}
lhs := segmentsSelf[i]
rhs := segmentsOther[i]
if lhs == rhs {
continue
} else if lhs < rhs {
return -1
}
// Otherwis, rhs was > lhs, they're not equal
return 1
}
// if we got this far, they're equal
return 0
}
func allZero(segs []int64) bool {
for _, s := range segs {
if s != 0 {
return false
}
}
return true
}
func comparePart(preSelf string, preOther string) int {
if preSelf == preOther {
return 0
}
var selfInt int64
selfNumeric := true
selfInt, err := strconv.ParseInt(preSelf, 10, 64)
if err != nil {
selfNumeric = false
}
var otherInt int64
otherNumeric := true
otherInt, err = strconv.ParseInt(preOther, 10, 64)
if err != nil {
otherNumeric = false
}
// if a part is empty, we use the other to decide
if preSelf == "" {
if otherNumeric {
return -1
}
return 1
}
if preOther == "" {
if selfNumeric {
return 1
}
return -1
}
if selfNumeric && !otherNumeric {
return -1
} else if !selfNumeric && otherNumeric {
return 1
} else if !selfNumeric && !otherNumeric && preSelf > preOther {
return 1
} else if selfInt > otherInt {
return 1
}
return -1
}
func comparePrereleases(v string, other string) int {
// the same pre release!
if v == other {
return 0
}
// split both pre releases for analyse their parts
selfPreReleaseMeta := strings.Split(v, ".")
otherPreReleaseMeta := strings.Split(other, ".")
selfPreReleaseLen := len(selfPreReleaseMeta)
otherPreReleaseLen := len(otherPreReleaseMeta)
biggestLen := otherPreReleaseLen
if selfPreReleaseLen > otherPreReleaseLen {
biggestLen = selfPreReleaseLen
}
// loop for parts to find the first difference
for i := 0; i < biggestLen; i = i + 1 {
partSelfPre := ""
if i < selfPreReleaseLen {
partSelfPre = selfPreReleaseMeta[i]
}
partOtherPre := ""
if i < otherPreReleaseLen {
partOtherPre = otherPreReleaseMeta[i]
}
compare := comparePart(partSelfPre, partOtherPre)
// if parts are equals, continue the loop
if compare != 0 {
return compare
}
}
return 0
}
// Equal tests if two versions are equal.
func (v *Version) Equal(o *Version) bool {
return v.Compare(o) == 0
}
// GreaterThan tests if this version is greater than another version.
func (v *Version) GreaterThan(o *Version) bool {
return v.Compare(o) > 0
}
// GreaterThanOrEqualTo tests if this version is greater than or equal to another version.
func (v *Version) GreaterThanOrEqual(o *Version) bool {
return v.Compare(o) >= 0
}
// LessThan tests if this version is less than another version.
func (v *Version) LessThan(o *Version) bool {
return v.Compare(o) < 0
}
// LessThanOrEqualTo tests if this version is less than or equal to another version.
func (v *Version) LessThanOrEqual(o *Version) bool {
return v.Compare(o) <= 0
}
// Metadata returns any metadata that was part of the version
// string.
//
// Metadata is anything that comes after the "+" in the version.
// For example, with "1.2.3+beta", the metadata is "beta".
func (v *Version) Metadata() string {
return v.metadata
}
// Prerelease returns any prerelease data that is part of the version,
// or blank if there is no prerelease data.
//
// Prerelease information is anything that comes after the "-" in the
// version (but before any metadata). For example, with "1.2.3-beta",
// the prerelease information is "beta".
func (v *Version) Prerelease() string {
return v.pre
}
// Segments returns the numeric segments of the version as a slice of ints.
//
// This excludes any metadata or pre-release information. For example,
// for a version "1.2.3-beta", segments will return a slice of
// 1, 2, 3.
func (v *Version) Segments() []int {
segmentSlice := make([]int, len(v.segments))
for i, v := range v.segments {
segmentSlice[i] = int(v)
}
return segmentSlice
}
// Segments64 returns the numeric segments of the version as a slice of int64s.
//
// This excludes any metadata or pre-release information. For example,
// for a version "1.2.3-beta", segments will return a slice of
// 1, 2, 3.
func (v *Version) Segments64() []int64 {
result := make([]int64, len(v.segments))
copy(result, v.segments)
return result
}
// String returns the full version string included pre-release
// and metadata information.
//
// This value is rebuilt according to the parsed segments and other
// information. Therefore, ambiguities in the version string such as
// prefixed zeroes (1.04.0 => 1.4.0), `v` prefix (v1.0.0 => 1.0.0), and
// missing parts (1.0 => 1.0.0) will be made into a canonicalized form
// as shown in the parenthesized examples.
func (v *Version) String() string {
var buf bytes.Buffer
fmtParts := make([]string, len(v.segments))
for i, s := range v.segments {
// We can ignore err here since we've pre-parsed the values in segments
str := strconv.FormatInt(s, 10)
fmtParts[i] = str
}
fmt.Fprintf(&buf, strings.Join(fmtParts, "."))
if v.pre != "" {
fmt.Fprintf(&buf, "-%s", v.pre)
}
if v.metadata != "" {
fmt.Fprintf(&buf, "+%s", v.metadata)
}
return buf.String()
}
// Original returns the original parsed version as-is, including any
// potential whitespace, `v` prefix, etc.
func (v *Version) Original() string {
return v.original
}

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vendor/github.com/hashicorp/go-version/version_collection.go generated vendored Normal file
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package version
// Collection is a type that implements the sort.Interface interface
// so that versions can be sorted.
type Collection []*Version
func (v Collection) Len() int {
return len(v)
}
func (v Collection) Less(i, j int) bool {
return v[i].LessThan(v[j])
}
func (v Collection) Swap(i, j int) {
v[i], v[j] = v[j], v[i]
}

23
vendor/github.com/hashicorp/golang-lru/.gitignore generated vendored Normal file
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# Compiled Object files, Static and Dynamic libs (Shared Objects)
*.o
*.a
*.so
# Folders
_obj
_test
# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out
*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*
_testmain.go
*.exe
*.test

223
vendor/github.com/hashicorp/golang-lru/2q.go generated vendored Normal file
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package lru
import (
"fmt"
"sync"
"github.com/hashicorp/golang-lru/simplelru"
)
const (
// Default2QRecentRatio is the ratio of the 2Q cache dedicated
// to recently added entries that have only been accessed once.
Default2QRecentRatio = 0.25
// Default2QGhostEntries is the default ratio of ghost
// entries kept to track entries recently evicted
Default2QGhostEntries = 0.50
)
// TwoQueueCache is a thread-safe fixed size 2Q cache.
// 2Q is an enhancement over the standard LRU cache
// in that it tracks both frequently and recently used
// entries separately. This avoids a burst in access to new
// entries from evicting frequently used entries. It adds some
// additional tracking overhead to the standard LRU cache, and is
// computationally about 2x the cost, and adds some metadata over
// head. The ARCCache is similar, but does not require setting any
// parameters.
type TwoQueueCache struct {
size int
recentSize int
recent simplelru.LRUCache
frequent simplelru.LRUCache
recentEvict simplelru.LRUCache
lock sync.RWMutex
}
// New2Q creates a new TwoQueueCache using the default
// values for the parameters.
func New2Q(size int) (*TwoQueueCache, error) {
return New2QParams(size, Default2QRecentRatio, Default2QGhostEntries)
}
// New2QParams creates a new TwoQueueCache using the provided
// parameter values.
func New2QParams(size int, recentRatio float64, ghostRatio float64) (*TwoQueueCache, error) {
if size <= 0 {
return nil, fmt.Errorf("invalid size")
}
if recentRatio < 0.0 || recentRatio > 1.0 {
return nil, fmt.Errorf("invalid recent ratio")
}
if ghostRatio < 0.0 || ghostRatio > 1.0 {
return nil, fmt.Errorf("invalid ghost ratio")
}
// Determine the sub-sizes
recentSize := int(float64(size) * recentRatio)
evictSize := int(float64(size) * ghostRatio)
// Allocate the LRUs
recent, err := simplelru.NewLRU(size, nil)
if err != nil {
return nil, err
}
frequent, err := simplelru.NewLRU(size, nil)
if err != nil {
return nil, err
}
recentEvict, err := simplelru.NewLRU(evictSize, nil)
if err != nil {
return nil, err
}
// Initialize the cache
c := &TwoQueueCache{
size: size,
recentSize: recentSize,
recent: recent,
frequent: frequent,
recentEvict: recentEvict,
}
return c, nil
}
// Get looks up a key's value from the cache.
func (c *TwoQueueCache) Get(key interface{}) (value interface{}, ok bool) {
c.lock.Lock()
defer c.lock.Unlock()
// Check if this is a frequent value
if val, ok := c.frequent.Get(key); ok {
return val, ok
}
// If the value is contained in recent, then we
// promote it to frequent
if val, ok := c.recent.Peek(key); ok {
c.recent.Remove(key)
c.frequent.Add(key, val)
return val, ok
}
// No hit
return nil, false
}
// Add adds a value to the cache.
func (c *TwoQueueCache) Add(key, value interface{}) {
c.lock.Lock()
defer c.lock.Unlock()
// Check if the value is frequently used already,
// and just update the value
if c.frequent.Contains(key) {
c.frequent.Add(key, value)
return
}
// Check if the value is recently used, and promote
// the value into the frequent list
if c.recent.Contains(key) {
c.recent.Remove(key)
c.frequent.Add(key, value)
return
}
// If the value was recently evicted, add it to the
// frequently used list
if c.recentEvict.Contains(key) {
c.ensureSpace(true)
c.recentEvict.Remove(key)
c.frequent.Add(key, value)
return
}
// Add to the recently seen list
c.ensureSpace(false)
c.recent.Add(key, value)
return
}
// ensureSpace is used to ensure we have space in the cache
func (c *TwoQueueCache) ensureSpace(recentEvict bool) {
// If we have space, nothing to do
recentLen := c.recent.Len()
freqLen := c.frequent.Len()
if recentLen+freqLen < c.size {
return
}
// If the recent buffer is larger than
// the target, evict from there
if recentLen > 0 && (recentLen > c.recentSize || (recentLen == c.recentSize && !recentEvict)) {
k, _, _ := c.recent.RemoveOldest()
c.recentEvict.Add(k, nil)
return
}
// Remove from the frequent list otherwise
c.frequent.RemoveOldest()
}
// Len returns the number of items in the cache.
func (c *TwoQueueCache) Len() int {
c.lock.RLock()
defer c.lock.RUnlock()
return c.recent.Len() + c.frequent.Len()
}
// Keys returns a slice of the keys in the cache.
// The frequently used keys are first in the returned slice.
func (c *TwoQueueCache) Keys() []interface{} {
c.lock.RLock()
defer c.lock.RUnlock()
k1 := c.frequent.Keys()
k2 := c.recent.Keys()
return append(k1, k2...)
}
// Remove removes the provided key from the cache.
func (c *TwoQueueCache) Remove(key interface{}) {
c.lock.Lock()
defer c.lock.Unlock()
if c.frequent.Remove(key) {
return
}
if c.recent.Remove(key) {
return
}
if c.recentEvict.Remove(key) {
return
}
}
// Purge is used to completely clear the cache.
func (c *TwoQueueCache) Purge() {
c.lock.Lock()
defer c.lock.Unlock()
c.recent.Purge()
c.frequent.Purge()
c.recentEvict.Purge()
}
// Contains is used to check if the cache contains a key
// without updating recency or frequency.
func (c *TwoQueueCache) Contains(key interface{}) bool {
c.lock.RLock()
defer c.lock.RUnlock()
return c.frequent.Contains(key) || c.recent.Contains(key)
}
// Peek is used to inspect the cache value of a key
// without updating recency or frequency.
func (c *TwoQueueCache) Peek(key interface{}) (value interface{}, ok bool) {
c.lock.RLock()
defer c.lock.RUnlock()
if val, ok := c.frequent.Peek(key); ok {
return val, ok
}
return c.recent.Peek(key)
}

362
vendor/github.com/hashicorp/golang-lru/LICENSE generated vendored Normal file
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Mozilla Public License, version 2.0
1. Definitions
1.1. "Contributor"
means each individual or legal entity that creates, contributes to the
creation of, or owns Covered Software.
1.2. "Contributor Version"
means the combination of the Contributions of others (if any) used by a
Contributor and that particular Contributor's Contribution.
1.3. "Contribution"
means Covered Software of a particular Contributor.
1.4. "Covered Software"
means Source Code Form to which the initial Contributor has attached the
notice in Exhibit A, the Executable Form of such Source Code Form, and
Modifications of such Source Code Form, in each case including portions
thereof.
1.5. "Incompatible With Secondary Licenses"
means
a. that the initial Contributor has attached the notice described in
Exhibit B to the Covered Software; or
b. that the Covered Software was made available under the terms of
version 1.1 or earlier of the License, but not also under the terms of
a Secondary License.
1.6. "Executable Form"
means any form of the work other than Source Code Form.
1.7. "Larger Work"
means a work that combines Covered Software with other material, in a
separate file or files, that is not Covered Software.
1.8. "License"
means this document.
1.9. "Licensable"
means having the right to grant, to the maximum extent possible, whether
at the time of the initial grant or subsequently, any and all of the
rights conveyed by this License.
1.10. "Modifications"
means any of the following:
a. any file in Source Code Form that results from an addition to,
deletion from, or modification of the contents of Covered Software; or
b. any new file in Source Code Form that contains any Covered Software.
1.11. "Patent Claims" of a Contributor
means any patent claim(s), including without limitation, method,
process, and apparatus claims, in any patent Licensable by such
Contributor that would be infringed, but for the grant of the License,
by the making, using, selling, offering for sale, having made, import,
or transfer of either its Contributions or its Contributor Version.
1.12. "Secondary License"
means either the GNU General Public License, Version 2.0, the GNU Lesser
General Public License, Version 2.1, the GNU Affero General Public
License, Version 3.0, or any later versions of those licenses.
1.13. "Source Code Form"
means the form of the work preferred for making modifications.
1.14. "You" (or "Your")
means an individual or a legal entity exercising rights under this
License. For legal entities, "You" includes any entity that controls, is
controlled by, or is under common control with You. For purposes of this
definition, "control" means (a) the power, direct or indirect, to cause
the direction or management of such entity, whether by contract or
otherwise, or (b) ownership of more than fifty percent (50%) of the
outstanding shares or beneficial ownership of such entity.
2. License Grants and Conditions
2.1. Grants
Each Contributor hereby grants You a world-wide, royalty-free,
non-exclusive license:
a. under intellectual property rights (other than patent or trademark)
Licensable by such Contributor to use, reproduce, make available,
modify, display, perform, distribute, and otherwise exploit its
Contributions, either on an unmodified basis, with Modifications, or
as part of a Larger Work; and
b. under Patent Claims of such Contributor to make, use, sell, offer for
sale, have made, import, and otherwise transfer either its
Contributions or its Contributor Version.
2.2. Effective Date
The licenses granted in Section 2.1 with respect to any Contribution
become effective for each Contribution on the date the Contributor first
distributes such Contribution.
2.3. Limitations on Grant Scope
The licenses granted in this Section 2 are the only rights granted under
this License. No additional rights or licenses will be implied from the
distribution or licensing of Covered Software under this License.
Notwithstanding Section 2.1(b) above, no patent license is granted by a
Contributor:
a. for any code that a Contributor has removed from Covered Software; or
b. for infringements caused by: (i) Your and any other third party's
modifications of Covered Software, or (ii) the combination of its
Contributions with other software (except as part of its Contributor
Version); or
c. under Patent Claims infringed by Covered Software in the absence of
its Contributions.
This License does not grant any rights in the trademarks, service marks,
or logos of any Contributor (except as may be necessary to comply with
the notice requirements in Section 3.4).
2.4. Subsequent Licenses
No Contributor makes additional grants as a result of Your choice to
distribute the Covered Software under a subsequent version of this
License (see Section 10.2) or under the terms of a Secondary License (if
permitted under the terms of Section 3.3).
2.5. Representation
Each Contributor represents that the Contributor believes its
Contributions are its original creation(s) or it has sufficient rights to
grant the rights to its Contributions conveyed by this License.
2.6. Fair Use
This License is not intended to limit any rights You have under
applicable copyright doctrines of fair use, fair dealing, or other
equivalents.
2.7. Conditions
Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
Section 2.1.
3. Responsibilities
3.1. Distribution of Source Form
All distribution of Covered Software in Source Code Form, including any
Modifications that You create or to which You contribute, must be under
the terms of this License. You must inform recipients that the Source
Code Form of the Covered Software is governed by the terms of this
License, and how they can obtain a copy of this License. You may not
attempt to alter or restrict the recipients' rights in the Source Code
Form.
3.2. Distribution of Executable Form
If You distribute Covered Software in Executable Form then:
a. such Covered Software must also be made available in Source Code Form,
as described in Section 3.1, and You must inform recipients of the
Executable Form how they can obtain a copy of such Source Code Form by
reasonable means in a timely manner, at a charge no more than the cost
of distribution to the recipient; and
b. You may distribute such Executable Form under the terms of this
License, or sublicense it under different terms, provided that the
license for the Executable Form does not attempt to limit or alter the
recipients' rights in the Source Code Form under this License.
3.3. Distribution of a Larger Work
You may create and distribute a Larger Work under terms of Your choice,
provided that You also comply with the requirements of this License for
the Covered Software. If the Larger Work is a combination of Covered
Software with a work governed by one or more Secondary Licenses, and the
Covered Software is not Incompatible With Secondary Licenses, this
License permits You to additionally distribute such Covered Software
under the terms of such Secondary License(s), so that the recipient of
the Larger Work may, at their option, further distribute the Covered
Software under the terms of either this License or such Secondary
License(s).
3.4. Notices
You may not remove or alter the substance of any license notices
(including copyright notices, patent notices, disclaimers of warranty, or
limitations of liability) contained within the Source Code Form of the
Covered Software, except that You may alter any license notices to the
extent required to remedy known factual inaccuracies.
3.5. Application of Additional Terms
You may choose to offer, and to charge a fee for, warranty, support,
indemnity or liability obligations to one or more recipients of Covered
Software. However, You may do so only on Your own behalf, and not on
behalf of any Contributor. You must make it absolutely clear that any
such warranty, support, indemnity, or liability obligation is offered by
You alone, and You hereby agree to indemnify every Contributor for any
liability incurred by such Contributor as a result of warranty, support,
indemnity or liability terms You offer. You may include additional
disclaimers of warranty and limitations of liability specific to any
jurisdiction.
4. Inability to Comply Due to Statute or Regulation
If it is impossible for You to comply with any of the terms of this License
with respect to some or all of the Covered Software due to statute,
judicial order, or regulation then You must: (a) comply with the terms of
this License to the maximum extent possible; and (b) describe the
limitations and the code they affect. Such description must be placed in a
text file included with all distributions of the Covered Software under
this License. Except to the extent prohibited by statute or regulation,
such description must be sufficiently detailed for a recipient of ordinary
skill to be able to understand it.
5. Termination
5.1. The rights granted under this License will terminate automatically if You
fail to comply with any of its terms. However, if You become compliant,
then the rights granted under this License from a particular Contributor
are reinstated (a) provisionally, unless and until such Contributor
explicitly and finally terminates Your grants, and (b) on an ongoing
basis, if such Contributor fails to notify You of the non-compliance by
some reasonable means prior to 60 days after You have come back into
compliance. Moreover, Your grants from a particular Contributor are
reinstated on an ongoing basis if such Contributor notifies You of the
non-compliance by some reasonable means, this is the first time You have
received notice of non-compliance with this License from such
Contributor, and You become compliant prior to 30 days after Your receipt
of the notice.
5.2. If You initiate litigation against any entity by asserting a patent
infringement claim (excluding declaratory judgment actions,
counter-claims, and cross-claims) alleging that a Contributor Version
directly or indirectly infringes any patent, then the rights granted to
You by any and all Contributors for the Covered Software under Section
2.1 of this License shall terminate.
5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
license agreements (excluding distributors and resellers) which have been
validly granted by You or Your distributors under this License prior to
termination shall survive termination.
6. Disclaimer of Warranty
Covered Software is provided under this License on an "as is" basis,
without warranty of any kind, either expressed, implied, or statutory,
including, without limitation, warranties that the Covered Software is free
of defects, merchantable, fit for a particular purpose or non-infringing.
The entire risk as to the quality and performance of the Covered Software
is with You. Should any Covered Software prove defective in any respect,
You (not any Contributor) assume the cost of any necessary servicing,
repair, or correction. This disclaimer of warranty constitutes an essential
part of this License. No use of any Covered Software is authorized under
this License except under this disclaimer.
7. Limitation of Liability
Under no circumstances and under no legal theory, whether tort (including
negligence), contract, or otherwise, shall any Contributor, or anyone who
distributes Covered Software as permitted above, be liable to You for any
direct, indirect, special, incidental, or consequential damages of any
character including, without limitation, damages for lost profits, loss of
goodwill, work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses, even if such party shall have been
informed of the possibility of such damages. This limitation of liability
shall not apply to liability for death or personal injury resulting from
such party's negligence to the extent applicable law prohibits such
limitation. Some jurisdictions do not allow the exclusion or limitation of
incidental or consequential damages, so this exclusion and limitation may
not apply to You.
8. Litigation
Any litigation relating to this License may be brought only in the courts
of a jurisdiction where the defendant maintains its principal place of
business and such litigation shall be governed by laws of that
jurisdiction, without reference to its conflict-of-law provisions. Nothing
in this Section shall prevent a party's ability to bring cross-claims or
counter-claims.
9. Miscellaneous
This License represents the complete agreement concerning the subject
matter hereof. If any provision of this License is held to be
unenforceable, such provision shall be reformed only to the extent
necessary to make it enforceable. Any law or regulation which provides that
the language of a contract shall be construed against the drafter shall not
be used to construe this License against a Contributor.
10. Versions of the License
10.1. New Versions
Mozilla Foundation is the license steward. Except as provided in Section
10.3, no one other than the license steward has the right to modify or
publish new versions of this License. Each version will be given a
distinguishing version number.
10.2. Effect of New Versions
You may distribute the Covered Software under the terms of the version
of the License under which You originally received the Covered Software,
or under the terms of any subsequent version published by the license
steward.
10.3. Modified Versions
If you create software not governed by this License, and you want to
create a new license for such software, you may create and use a
modified version of this License if you rename the license and remove
any references to the name of the license steward (except to note that
such modified license differs from this License).
10.4. Distributing Source Code Form that is Incompatible With Secondary
Licenses If You choose to distribute Source Code Form that is
Incompatible With Secondary Licenses under the terms of this version of
the License, the notice described in Exhibit B of this License must be
attached.
Exhibit A - Source Code Form License Notice
This Source Code Form is subject to the
terms of the Mozilla Public License, v.
2.0. If a copy of the MPL was not
distributed with this file, You can
obtain one at
http://mozilla.org/MPL/2.0/.
If it is not possible or desirable to put the notice in a particular file,
then You may include the notice in a location (such as a LICENSE file in a
relevant directory) where a recipient would be likely to look for such a
notice.
You may add additional accurate notices of copyright ownership.
Exhibit B - "Incompatible With Secondary Licenses" Notice
This Source Code Form is "Incompatible
With Secondary Licenses", as defined by
the Mozilla Public License, v. 2.0.

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