mirror of https://github.com/docker/cli.git
58 lines
1.4 KiB
Markdown
58 lines
1.4 KiB
Markdown
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# OpenTracing support for gRPC in Go
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The `otgrpc` package makes it easy to add OpenTracing support to gRPC-based
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systems in Go.
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## Installation
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```
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go get github.com/grpc-ecosystem/grpc-opentracing/go/otgrpc
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```
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## Documentation
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See the basic usage examples below and the [package documentation on
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godoc.org](https://godoc.org/github.com/grpc-ecosystem/grpc-opentracing/go/otgrpc).
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## Client-side usage example
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Wherever you call `grpc.Dial`:
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```go
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// You must have some sort of OpenTracing Tracer instance on hand.
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var tracer opentracing.Tracer = ...
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...
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// Set up a connection to the server peer.
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conn, err := grpc.Dial(
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address,
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... // other options
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grpc.WithUnaryInterceptor(
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otgrpc.OpenTracingClientInterceptor(tracer)),
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grpc.WithStreamInterceptor(
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otgrpc.OpenTracingStreamClientInterceptor(tracer)))
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// All future RPC activity involving `conn` will be automatically traced.
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```
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## Server-side usage example
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Wherever you call `grpc.NewServer`:
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```go
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// You must have some sort of OpenTracing Tracer instance on hand.
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var tracer opentracing.Tracer = ...
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...
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// Initialize the gRPC server.
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s := grpc.NewServer(
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... // other options
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grpc.UnaryInterceptor(
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otgrpc.OpenTracingServerInterceptor(tracer)),
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grpc.StreamInterceptor(
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otgrpc.OpenTracingStreamServerInterceptor(tracer)))
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// All future RPC activity involving `s` will be automatically traced.
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```
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