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Krzesimir Nowak 8ebc7bbad0
Name context functions consistently (#481) 
It would be nice to follow a single schema for naming context
functions. In the trace package we followed the form FooFromContext
and ContextWithFoo. Do the same in the correlation package. The schema
WithFoo is mainly used for functions following the options pattern.

Not sure about a name of the NewContext function, though. For now I
have left it alone.

Co-authored-by: Rahul Patel <rghetia@yahoo.com>
2020-02-27 09:10:52 -08:00
..
basic Move dependencies of tools package to a tools directory (#466) 2020-02-06 10:51:00 -08:00
grpc Name context functions consistently (#481) 2020-02-27 09:10:52 -08:00
http Name context functions consistently (#481) 2020-02-27 09:10:52 -08:00
http-stackdriver Name context functions consistently (#481) 2020-02-27 09:10:52 -08:00
jaeger Move dependencies of tools package to a tools directory (#466) 2020-02-06 10:51:00 -08:00
namedtracer Move dependencies of tools package to a tools directory (#466) 2020-02-06 10:51:00 -08:00
prometheus Move dependencies of tools package to a tools directory (#466) 2020-02-06 10:51:00 -08:00
README.md Namespace import path under "/otel" (#274) 2019-11-01 11:40:29 -07:00

README.md

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.