WildFly OpenTelemetry Demo

Quick demo on how to use OpenTelemetry in a WildFly.

It has three API elements:

1. a GraphQL query hello returning "Hello",

2. a REST resource /rest/target returning "World", and

3. a REST resource /rest/hello combining the other two.

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Start it with:

docker run --name jaeger --rm -e COLLECTOR_OTLP_ENABLED=true -p 16686:16686 -p 14250:14250 -p 4317:4317 -p 4318:4318 jaegertracing/all-in-one

mvn clean wildfly:provision wildfly:dev

Then open http://localhost:16686 to see traces in the Jaeger GUI.