The OpenTelemetry Java Agent Buildpack is a Cloud Native Buildpack that contributes the OpenTelemetry Java Agent.

This buildpack will participate if all the following conditions are met

• the build plan contains jvm-application
• $BP_DISABLE_OTEL_JAVAAGENT is not set

The buildpack will do the following:

• Contributes a Java agent to a layer and configures JAVA_TOOL_OPTIONS to use it

This buildpack does not configure Java system properties (-D flags) or as environment variables for the agent. See the configuration documentation for the full list of configuration items.

git clone https://github.com/making/hello-servlet.git
pack build hello-servlet \
  --path hello-servlet \
  --buildpack paketo-buildpacks/java \
  --buildpack ghcr.io/making/buildpacks/opentelemetry-javaagent \
  --builder paketobuildpacks/builder:base

docker run \
  --rm \
  -p 9411:9411 \
  openzipkin/zipkin-slim

docker run \
  --rm \
  -p 8080:8080 \
  -e JAVA_TOOL_OPTIONS="-Dotel.resource.attributes=service.name=hello-service -Dotel.traces.exporter=zipkin -Dotel.exporter.zipkin.endpoint=http://host.docker.internal:9411/api/v2/spans" \
  hello-servlet

curl http://localhost:8080

Go to http://localhost:9411

This buildpack is released under version 2.0 of the Apache License.