This is used as a message queue service to connect the checkout service with the accounting and fraud detection services.

Kafka service source


This service relies on the OpenTelemetry Java agent and the built in JMX Metric Insight Module to capture Kafka broker metrics and send them off to the collector via OTLP.

The agent is passed into the process using the -javaagent command line argument. Command line arguments are added through the KAFKA_OPTS in the Dockerfile.

ENV KAFKA_OPTS="-javaagent:/tmp/opentelemetry-javaagent.jar -Dotel.jmx.target.system=kafka-broker"