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This is the topic metricset of the ActiveMQ module.

The metricset provides metrics describing the available ActiveMQ topics, especially exchanged messages (enqueued, dequeued, expired, in-flight), connected consumers and producers.

To collect data, the module communicates with a Jolokia HTTP/REST endpoint that exposes the JMX metrics over HTTP/REST/JSON (JMX key: org.apache.activemq:brokerName=localhost,destinationName=sample_queue,destinationType=Queue,type=Broker).

The topic metricset comes with a predefined dashboard: