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mirror of https://github.com/open-telemetry/opentelemetry-go.git synced 2024-12-14 10:13:10 +02:00
opentelemetry-go/example
Joshua MacDonald 1414d363de
Global meter forwarding implementation (#392)
* Initial skeleton

* Revert noop provider removal

* Checkpoint

* Checkpoint

* Implement Bound instrument and LabelSet

* Add test

* Add a benchmark

* Add a release test

* Document LabelSetDelegator

* Lint and comments

* Add a second Meter test; fix typo; add a panic

* Add a test for the builtin SDK

* Address feedback
2019-12-23 23:03:04 -08:00
..
basic Rename CurrentSpan to SpanFromContext & SetCurrentSpan to ContextWithSpan (#379) 2019-12-11 08:51:32 -08:00
grpc Global meter forwarding implementation (#392) 2019-12-23 23:03:04 -08:00
http Global meter forwarding implementation (#392) 2019-12-23 23:03:04 -08:00
http-stackdriver Global meter forwarding implementation (#392) 2019-12-23 23:03:04 -08:00
jaeger Global meter forwarding implementation (#392) 2019-12-23 23:03:04 -08:00
namedtracer Global meter forwarding implementation (#392) 2019-12-23 23:03:04 -08:00
prometheus Change prometheus to not aggregate metrics and only export them. (#385) 2019-12-23 09:47:51 -08:00
README.md Namespace import path under "/otel" (#274) 2019-11-01 11:40:29 -07:00

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.