mirror of
https://github.com/open-telemetry/opentelemetry-go.git
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8f9f2d84cf
* Move proto to OTLP exporter * Update OTLP exporter import of proto * Use gogo protobuf To stop using the deprecated github.com/golang/protobuf and match what the collector is doing, switch to generating OTLP with the github.com/gogo/protobuf/proto instead of github.com/golang/protobuf/proto. * Clean dependencies Remove all protobuf dependencies from otel package and all of its dependencies. * Update CHANGELOG * Clean OTLP exporter go mod Remove submodule beforehand to avoid unneeded direct dependencies. * Use default ref for GitHub workflow * Update path that triggers proto gen action * Correct license-check exclusion for OTLP * Update commented location of the OTLP and code
Example
HTTP
This is a simple example that demonstrates tracing http request from client to server. The example shows key aspects of tracing such as:
- Root Span (on Client)
- Child Span (on Client)
- Child Span from a Remote Parent (on Server)
- SpanContext Propagation (from Client to Server)
- Span Events
- Span Attributes
Example uses
- open-telemetry SDK as trace instrumentation provider,
- httptrace plugin to facilitate tracing http request on client and server
- http trace_context propagation to propagate SpanContext on the wire.
- stdout exporter to print information about spans in the terminal
How to run?
Prequisites
- go 1.13 installed
- GOPATH is configured.
1 Download git repo
GO111MODULE="" go get -d go.opentelemetry.io/otel
2 Start Server
cd $GOPATH/src/go.opentelemetry.io/otel/example/http/
go run ./server/server.go
3 Start Client
cd $GOPATH/src/go.opentelemetry.io/otel/example/http/
go run ./client/client.go
4 Check traces in stdout
The spans should be visible in stdout in the order that they were exported.