rebase: bump github.com/grpc-ecosystem/go-grpc-middleware

Bumps [github.com/grpc-ecosystem/go-grpc-middleware](https://github.com/grpc-ecosystem/go-grpc-middleware) from 1.3.0 to 1.4.0.
- [Release notes](https://github.com/grpc-ecosystem/go-grpc-middleware/releases)
- [Commits](https://github.com/grpc-ecosystem/go-grpc-middleware/compare/v1.3.0...v1.4.0)

---
updated-dependencies:
- dependency-name: github.com/grpc-ecosystem/go-grpc-middleware
  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] 2023-05-08 21:00:47 +00:00 committed by mergify[bot]
parent 449c6ad24c
commit 257ce599f7
7 changed files with 125 additions and 137 deletions

2
go.mod
View File

@ -16,7 +16,7 @@ require (
github.com/golang/protobuf v1.5.3
github.com/google/fscrypt v0.3.4
github.com/google/uuid v1.3.0
github.com/grpc-ecosystem/go-grpc-middleware v1.3.0
github.com/grpc-ecosystem/go-grpc-middleware v1.4.0
github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0
github.com/hashicorp/vault/api v1.9.1
github.com/kubernetes-csi/csi-lib-utils v0.13.0

4
go.sum
View File

@ -524,8 +524,9 @@ github.com/gotestyourself/gotestyourself v2.2.0+incompatible/go.mod h1:zZKM6oeNM
github.com/gregjones/httpcache v0.0.0-20180305231024-9cad4c3443a7/go.mod h1:FecbI9+v66THATjSRHfNgh1IVFe/9kFxbXtjV0ctIMA=
github.com/grpc-ecosystem/go-grpc-middleware v1.0.0/go.mod h1:FiyG127CGDf3tlThmgyCl78X/SZQqEOJBCDaAfeWzPs=
github.com/grpc-ecosystem/go-grpc-middleware v1.0.1-0.20190118093823-f849b5445de4/go.mod h1:FiyG127CGDf3tlThmgyCl78X/SZQqEOJBCDaAfeWzPs=
github.com/grpc-ecosystem/go-grpc-middleware v1.3.0 h1:+9834+KizmvFV7pXQGSXQTsaWhq2GjuNUt0aUU0YBYw=
github.com/grpc-ecosystem/go-grpc-middleware v1.3.0/go.mod h1:z0ButlSOZa5vEBq9m2m2hlwIgKw+rp3sdCBRoJY+30Y=
github.com/grpc-ecosystem/go-grpc-middleware v1.4.0 h1:UH//fgunKIs4JdUbpDl1VZCDaL56wXCB/5+wF6uHfaI=
github.com/grpc-ecosystem/go-grpc-middleware v1.4.0/go.mod h1:g5qyo/la0ALbONm6Vbp88Yd8NsDy6rZz+RcrMPxvld8=
github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0 h1:Ovs26xHkKqVztRpIrF/92BcuyuQ/YW4NSIpoGtfXNho=
github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0/go.mod h1:8NvIoxWQoOIhqOTXgfV/d3M/q6VIi02HzZEHgUlZvzk=
github.com/grpc-ecosystem/grpc-gateway v1.6.2/go.mod h1:RSKVYQBd5MCa4OVpNdGskqpgL2+G+NZTnrVHpWWfpdw=
@ -1396,6 +1397,7 @@ golang.org/x/sys v0.0.0-20210806184541-e5e7981a1069/go.mod h1:oPkhp1MJrh7nUepCBc
golang.org/x/sys v0.0.0-20210823070655-63515b42dcdf/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20210908233432-aa78b53d3365/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20211019181941-9d821ace8654/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20211025201205-69cdffdb9359/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220114195835-da31bd327af9/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220319134239-a9b59b0215f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=

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@ -1,16 +0,0 @@
sudo: false
language: go
go:
- 1.13.x
- 1.14.x
- 1.15.x
env:
global:
- GO111MODULE=on
script:
- make test
after_success:
- bash <(curl -s https://codecov.io/bash)

View File

@ -1,51 +0,0 @@
# Changelog
All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
Types of changes:
- `Added` for new features.
- `Changed` for changes in existing functionality.
- `Deprecated` for soon-to-be removed features.
- `Removed` for now removed features.
- `Fixed` for any bug fixes.
- `Security` in case of vulnerabilities.
## [Unreleased]
### Added
- [#223](https://github.com/grpc-ecosystem/go-grpc-middleware/pull/223) Add go-kit logging middleware - [adrien-f](https://github.com/adrien-f)
## [v1.1.0] - 2019-09-12
### Added
- [#226](https://github.com/grpc-ecosystem/go-grpc-middleware/pull/226) Support for go modules.
- [#221](https://github.com/grpc-ecosystem/go-grpc-middleware/pull/221) logging/zap add support for gRPC LoggerV2 - [kush-patel-hs](https://github.com/kush-patel-hs)
- [#181](https://github.com/grpc-ecosystem/go-grpc-middleware/pull/181) Rate Limit support - [ceshihao](https://github.com/ceshihao)
- [#161](https://github.com/grpc-ecosystem/go-grpc-middleware/pull/161) Retry on server stream call - [lonnblad](https://github.com/lonnblad)
- [#152](https://github.com/grpc-ecosystem/go-grpc-middleware/pull/152) Exponential backoff functions - [polyfloyd](https://github.com/polyfloyd)
- [#147](https://github.com/grpc-ecosystem/go-grpc-middleware/pull/147) Jaeger support for ctxtags extraction - [vporoshok](https://github.com/vporoshok)
- [#184](https://github.com/grpc-ecosystem/go-grpc-middleware/pull/184) ctxTags identifies if the call was sampled
### Deprecated
- [#201](https://github.com/grpc-ecosystem/go-grpc-middleware/pull/201) `golang.org/x/net/context` - [houz42](https://github.com/houz42)
- [#183](https://github.com/grpc-ecosystem/go-grpc-middleware/pull/183) Documentation Generation in favour of <godoc.org>.
### Fixed
- [172](https://github.com/grpc-ecosystem/go-grpc-middleware/pull/172) Passing ctx into retry and recover - [johanbrandhorst](https://github.com/johanbrandhorst)
- Numerious documentation fixes.
## v1.0.0 - 2018-05-08
### Added
- grpc_auth
- grpc_ctxtags
- grpc_zap
- grpc_logrus
- grpc_opentracing
- grpc_retry
- grpc_validator
- grpc_recovery
[Unreleased]: https://github.com/grpc-ecosystem/go-grpc-middleware/compare/v1.1.0...HEAD
[v1.1.0]: https://github.com/grpc-ecosystem/go-grpc-middleware/compare/v1.0.0...v1.1.0

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@ -7,16 +7,23 @@
[![codecov](https://codecov.io/gh/grpc-ecosystem/go-grpc-middleware/branch/master/graph/badge.svg)](https://codecov.io/gh/grpc-ecosystem/go-grpc-middleware)
[![Apache 2.0 License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](LICENSE)
[![quality: production](https://img.shields.io/badge/quality-production-orange.svg)](#status)
[![Slack](https://img.shields.io/badge/slack-%23grpc--middleware-brightgreen)](https://slack.com/share/IRUQCFC23/9Tm7hxRFVKKNoajQfMOcUiIk/enQtODc4ODI4NTIyMDcxLWM5NDA0ZTE4Njg5YjRjYWZkMTI5MzQwNDY3YzBjMzE1YzdjOGM5ZjI1NDNiM2JmNzI2YjM5ODE5OTRiNTEyOWE)
[![Slack](https://img.shields.io/badge/slack-%23grpc--middleware-brightgreen)](https://gophers.slack.com/archives/CNJL30P4P)
[gRPC Go](https://github.com/grpc/grpc-go) Middleware: interceptors, helpers, utilities.
## ⚠️ Status
Version [v2](https://github.com/grpc-ecosystem/go-grpc-middleware/tree/v2) is about to be released, with migration guide, which will replace v1. Try v2 and give us feedback!
Version v1 is currently in deprecation mode, which means only critical and safety bug fixes will be merged.
## Middleware
[gRPC Go](https://github.com/grpc/grpc-go) recently acquired support for
Interceptors, i.e. [middleware](https://medium.com/@matryer/writing-middleware-in-golang-and-how-go-makes-it-so-much-fun-4375c1246e81#.gv7tdlghs)
that is executed either on the gRPC Server before the request is passed onto the user's application logic, or on the gRPC client around the user call. It is a perfect way to implement
common patterns: auth, logging, message, validation, retries or monitoring.
common patterns: auth, logging, message, validation, retries, or monitoring.
These are generic building blocks that make it easy to build multiple microservices easily.
The purpose of this repository is to act as a go-to point for such reusable functionality. It contains
@ -29,57 +36,57 @@ import "github.com/grpc-ecosystem/go-grpc-middleware"
myServer := grpc.NewServer(
grpc.StreamInterceptor(grpc_middleware.ChainStreamServer(
grpc_recovery.StreamServerInterceptor(),
grpc_ctxtags.StreamServerInterceptor(),
grpc_opentracing.StreamServerInterceptor(),
grpc_prometheus.StreamServerInterceptor,
grpc_zap.StreamServerInterceptor(zapLogger),
grpc_auth.StreamServerInterceptor(myAuthFunction),
grpc_recovery.StreamServerInterceptor(),
)),
grpc.UnaryInterceptor(grpc_middleware.ChainUnaryServer(
grpc_recovery.UnaryServerInterceptor(),
grpc_ctxtags.UnaryServerInterceptor(),
grpc_opentracing.UnaryServerInterceptor(),
grpc_prometheus.UnaryServerInterceptor,
grpc_zap.UnaryServerInterceptor(zapLogger),
grpc_auth.UnaryServerInterceptor(myAuthFunction),
grpc_recovery.UnaryServerInterceptor(),
)),
)
```
## Interceptors
*Please send a PR to add new interceptors or middleware to this list*
_Please send a PR to add new interceptors or middleware to this list_
#### Auth
* [`grpc_auth`](auth) - a customizable (via `AuthFunc`) piece of auth middleware
- [`grpc_auth`](auth) - a customizable (via `AuthFunc`) piece of auth middleware
#### Logging
* [`grpc_ctxtags`](tags/) - a library that adds a `Tag` map to context, with data populated from request body
* [`grpc_zap`](logging/zap/) - integration of [zap](https://github.com/uber-go/zap) logging library into gRPC handlers.
* [`grpc_logrus`](logging/logrus/) - integration of [logrus](https://github.com/sirupsen/logrus) logging library into gRPC handlers.
* [`grpc_kit`](logging/kit/) - integration of [go-kit](https://github.com/go-kit/kit/tree/master/log) logging library into gRPC handlers.
* [`grpc_grpc_logsettable`](logging/settable/) - a wrapper around `grpclog.LoggerV2` that allows to replace loggers in runtime (thread-safe).
- [`grpc_ctxtags`](tags/) - a library that adds a `Tag` map to context, with data populated from request body
- [`grpc_zap`](logging/zap/) - integration of [zap](https://github.com/uber-go/zap) logging library into gRPC handlers.
- [`grpc_logrus`](logging/logrus/) - integration of [logrus](https://github.com/sirupsen/logrus) logging library into gRPC handlers.
- [`grpc_kit`](logging/kit/) - integration of [go-kit/log](https://github.com/go-kit/log) logging library into gRPC handlers.
- [`grpc_grpc_logsettable`](logging/settable/) - a wrapper around `grpclog.LoggerV2` that allows to replace loggers in runtime (thread-safe).
#### Monitoring
* [`grpc_prometheus`⚡](https://github.com/grpc-ecosystem/go-grpc-prometheus) - Prometheus client-side and server-side monitoring middleware
* [`otgrpc`⚡](https://github.com/grpc-ecosystem/grpc-opentracing/tree/master/go/otgrpc) - [OpenTracing](http://opentracing.io/) client-side and server-side interceptors
* [`grpc_opentracing`](tracing/opentracing) - [OpenTracing](http://opentracing.io/) client-side and server-side interceptors with support for streaming and handler-returned tags
- [`grpc_prometheus`⚡](https://github.com/grpc-ecosystem/go-grpc-prometheus) - Prometheus client-side and server-side monitoring middleware
- [`otgrpc`⚡](https://github.com/grpc-ecosystem/grpc-opentracing/tree/master/go/otgrpc) - [OpenTracing](http://opentracing.io/) client-side and server-side interceptors
- [`grpc_opentracing`](tracing/opentracing) - [OpenTracing](http://opentracing.io/) client-side and server-side interceptors with support for streaming and handler-returned tags
- [`otelgrpc`](https://github.com/open-telemetry/opentelemetry-go-contrib/tree/main/instrumentation/google.golang.org/grpc/otelgrpc) - [OpenTelemetry](https://opentelemetry.io/) client-side and server-side interceptors
#### Client
* [`grpc_retry`](retry/) - a generic gRPC response code retry mechanism, client-side middleware
- [`grpc_retry`](retry/) - a generic gRPC response code retry mechanism, client-side middleware
#### Server
* [`grpc_validator`](validator/) - codegen inbound message validation from `.proto` options
* [`grpc_recovery`](recovery/) - turn panics into gRPC errors
* [`ratelimit`](ratelimit/) - grpc rate limiting by your own limiter
- [`grpc_validator`](validator/) - codegen inbound message validation from `.proto` options
- [`grpc_recovery`](recovery/) - turn panics into gRPC errors
- [`ratelimit`](ratelimit/) - grpc rate limiting by your own limiter
## Status
This code has been running in *production* since May 2016 as the basis of the gRPC micro services stack at [Improbable](https://improbable.io).
Additional tooling will be added, and contributions are welcome.
## License

View File

@ -16,22 +16,41 @@ import (
// Execution is done in left-to-right order, including passing of context.
// For example ChainUnaryServer(one, two, three) will execute one before two before three, and three
// will see context changes of one and two.
//
// While this can be useful in some scenarios, it is generally advisable to use google.golang.org/grpc.ChainUnaryInterceptor directly.
func ChainUnaryServer(interceptors ...grpc.UnaryServerInterceptor) grpc.UnaryServerInterceptor {
n := len(interceptors)
// Dummy interceptor maintained for backward compatibility to avoid returning nil.
if n == 0 {
return func(ctx context.Context, req interface{}, _ *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (interface{}, error) {
return handler(ctx, req)
}
}
// The degenerate case, just return the single wrapped interceptor directly.
if n == 1 {
return interceptors[0]
}
// Return a function which satisfies the interceptor interface, and which is
// a closure over the given list of interceptors to be chained.
return func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (interface{}, error) {
chainer := func(currentInter grpc.UnaryServerInterceptor, currentHandler grpc.UnaryHandler) grpc.UnaryHandler {
return func(currentCtx context.Context, currentReq interface{}) (interface{}, error) {
return currentInter(currentCtx, currentReq, info, currentHandler)
currHandler := handler
// Iterate backwards through all interceptors except the first (outermost).
// Wrap each one in a function which satisfies the handler interface, but
// is also a closure over the `info` and `handler` parameters. Then pass
// each pseudo-handler to the next outer interceptor as the handler to be called.
for i := n - 1; i > 0; i-- {
// Rebind to loop-local vars so they can be closed over.
innerHandler, i := currHandler, i
currHandler = func(currentCtx context.Context, currentReq interface{}) (interface{}, error) {
return interceptors[i](currentCtx, currentReq, info, innerHandler)
}
}
chainedHandler := handler
for i := n - 1; i >= 0; i-- {
chainedHandler = chainer(interceptors[i], chainedHandler)
}
return chainedHandler(ctx, req)
// Finally return the result of calling the outermost interceptor with the
// outermost pseudo-handler created above as its handler.
return interceptors[0](ctx, req, info, currHandler)
}
}
@ -40,22 +59,31 @@ func ChainUnaryServer(interceptors ...grpc.UnaryServerInterceptor) grpc.UnarySer
// Execution is done in left-to-right order, including passing of context.
// For example ChainUnaryServer(one, two, three) will execute one before two before three.
// If you want to pass context between interceptors, use WrapServerStream.
//
// While this can be useful in some scenarios, it is generally advisable to use google.golang.org/grpc.ChainStreamInterceptor directly.
func ChainStreamServer(interceptors ...grpc.StreamServerInterceptor) grpc.StreamServerInterceptor {
n := len(interceptors)
return func(srv interface{}, ss grpc.ServerStream, info *grpc.StreamServerInfo, handler grpc.StreamHandler) error {
chainer := func(currentInter grpc.StreamServerInterceptor, currentHandler grpc.StreamHandler) grpc.StreamHandler {
return func(currentSrv interface{}, currentStream grpc.ServerStream) error {
return currentInter(currentSrv, currentStream, info, currentHandler)
// Dummy interceptor maintained for backward compatibility to avoid returning nil.
if n == 0 {
return func(srv interface{}, stream grpc.ServerStream, _ *grpc.StreamServerInfo, handler grpc.StreamHandler) error {
return handler(srv, stream)
}
}
chainedHandler := handler
for i := n - 1; i >= 0; i-- {
chainedHandler = chainer(interceptors[i], chainedHandler)
if n == 1 {
return interceptors[0]
}
return chainedHandler(srv, ss)
return func(srv interface{}, stream grpc.ServerStream, info *grpc.StreamServerInfo, handler grpc.StreamHandler) error {
currHandler := handler
for i := n - 1; i > 0; i-- {
innerHandler, i := currHandler, i
currHandler = func(currentSrv interface{}, currentStream grpc.ServerStream) error {
return interceptors[i](currentSrv, currentStream, info, innerHandler)
}
}
return interceptors[0](srv, stream, info, currHandler)
}
}
@ -66,19 +94,26 @@ func ChainStreamServer(interceptors ...grpc.StreamServerInterceptor) grpc.Stream
func ChainUnaryClient(interceptors ...grpc.UnaryClientInterceptor) grpc.UnaryClientInterceptor {
n := len(interceptors)
// Dummy interceptor maintained for backward compatibility to avoid returning nil.
if n == 0 {
return func(ctx context.Context, method string, req, reply interface{}, cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {
chainer := func(currentInter grpc.UnaryClientInterceptor, currentInvoker grpc.UnaryInvoker) grpc.UnaryInvoker {
return func(currentCtx context.Context, currentMethod string, currentReq, currentRepl interface{}, currentConn *grpc.ClientConn, currentOpts ...grpc.CallOption) error {
return currentInter(currentCtx, currentMethod, currentReq, currentRepl, currentConn, currentInvoker, currentOpts...)
return invoker(ctx, method, req, reply, cc, opts...)
}
}
chainedInvoker := invoker
for i := n - 1; i >= 0; i-- {
chainedInvoker = chainer(interceptors[i], chainedInvoker)
if n == 1 {
return interceptors[0]
}
return chainedInvoker(ctx, method, req, reply, cc, opts...)
return func(ctx context.Context, method string, req, reply interface{}, cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {
currInvoker := invoker
for i := n - 1; i > 0; i-- {
innerInvoker, i := currInvoker, i
currInvoker = func(currentCtx context.Context, currentMethod string, currentReq, currentRepl interface{}, currentConn *grpc.ClientConn, currentOpts ...grpc.CallOption) error {
return interceptors[i](currentCtx, currentMethod, currentReq, currentRepl, currentConn, innerInvoker, currentOpts...)
}
}
return interceptors[0](ctx, method, req, reply, cc, currInvoker, opts...)
}
}
@ -89,19 +124,26 @@ func ChainUnaryClient(interceptors ...grpc.UnaryClientInterceptor) grpc.UnaryCli
func ChainStreamClient(interceptors ...grpc.StreamClientInterceptor) grpc.StreamClientInterceptor {
n := len(interceptors)
// Dummy interceptor maintained for backward compatibility to avoid returning nil.
if n == 0 {
return func(ctx context.Context, desc *grpc.StreamDesc, cc *grpc.ClientConn, method string, streamer grpc.Streamer, opts ...grpc.CallOption) (grpc.ClientStream, error) {
chainer := func(currentInter grpc.StreamClientInterceptor, currentStreamer grpc.Streamer) grpc.Streamer {
return func(currentCtx context.Context, currentDesc *grpc.StreamDesc, currentConn *grpc.ClientConn, currentMethod string, currentOpts ...grpc.CallOption) (grpc.ClientStream, error) {
return currentInter(currentCtx, currentDesc, currentConn, currentMethod, currentStreamer, currentOpts...)
return streamer(ctx, desc, cc, method, opts...)
}
}
chainedStreamer := streamer
for i := n - 1; i >= 0; i-- {
chainedStreamer = chainer(interceptors[i], chainedStreamer)
if n == 1 {
return interceptors[0]
}
return chainedStreamer(ctx, desc, cc, method, opts...)
return func(ctx context.Context, desc *grpc.StreamDesc, cc *grpc.ClientConn, method string, streamer grpc.Streamer, opts ...grpc.CallOption) (grpc.ClientStream, error) {
currStreamer := streamer
for i := n - 1; i > 0; i-- {
innerStreamer, i := currStreamer, i
currStreamer = func(currentCtx context.Context, currentDesc *grpc.StreamDesc, currentConn *grpc.ClientConn, currentMethod string, currentOpts ...grpc.CallOption) (grpc.ClientStream, error) {
return interceptors[i](currentCtx, currentDesc, currentConn, currentMethod, innerStreamer, currentOpts...)
}
}
return interceptors[0](ctx, desc, cc, method, currStreamer, opts...)
}
}
@ -109,12 +151,16 @@ func ChainStreamClient(interceptors ...grpc.StreamClientInterceptor) grpc.Stream
//
// WithUnaryServerChain is a grpc.Server config option that accepts multiple unary interceptors.
// Basically syntactic sugar.
//
// Deprecated: use google.golang.org/grpc.ChainUnaryInterceptor instead.
func WithUnaryServerChain(interceptors ...grpc.UnaryServerInterceptor) grpc.ServerOption {
return grpc.UnaryInterceptor(ChainUnaryServer(interceptors...))
return grpc.ChainUnaryInterceptor(interceptors...)
}
// WithStreamServerChain is a grpc.Server config option that accepts multiple stream interceptors.
// Basically syntactic sugar.
//
// Deprecated: use google.golang.org/grpc.ChainStreamInterceptor instead.
func WithStreamServerChain(interceptors ...grpc.StreamServerInterceptor) grpc.ServerOption {
return grpc.StreamInterceptor(ChainStreamServer(interceptors...))
return grpc.ChainStreamInterceptor(interceptors...)
}

2
vendor/modules.txt vendored
View File

@ -258,7 +258,7 @@ github.com/google/gofuzz/bytesource
# github.com/google/uuid v1.3.0
## explicit
github.com/google/uuid
# github.com/grpc-ecosystem/go-grpc-middleware v1.3.0
# github.com/grpc-ecosystem/go-grpc-middleware v1.4.0
## explicit; go 1.14
github.com/grpc-ecosystem/go-grpc-middleware
# github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0