OpenTelemetry Golang net/http + go-redis example

This demo showcases OpenTelemetry distributed tracing of a sample Golang HTTP App that uses a Redis backend, using W3C TraceContext as the de-facto standard for trace propagation across process boundaries.

This setup relies on Jaeger to receive and visualize traces.

Make sure to check https://opentelemetry.io/docs/go/ for further reference and examples.

1 ) How to build and the sample app using docker

git clone github.com/filipecosta90/opentelemetry-go-http-sample
cd opentelemetry-go-http-sample
make build-docker
make start-docker

2 ) Generating sample traces

You should now jave your sample app listening on port :7777, redis on port :6379, and Jaeger on ports :14268, :16686. Let's generate some sample traces:

$ curl -X POST -d "{\"Name\":\"John Doe\", \"Username\":\"johndoe\", \"About\":\"Redis Geek\"}" http://localhost:7777/author/1
$ curl -X GET http://localhost:7777/author/1

3) Go look for your traces!

The Jaeger visualization URL is at (notice the port number):

http://[hostname]:16686/search

Put in sampleHTTPServer value into the service name, and search for your recent traces! Click one, and you should see the following: