For the latest stable version, please use Spring AMQP 3.2.1!

Consumer Events

The containers publish application events whenever a listener (consumer) experiences a failure of some kind. The event ListenerContainerConsumerFailedEvent has the following properties:

  • container: The listener container where the consumer experienced the problem.

  • reason: A textual reason for the failure.

  • fatal: A boolean indicating whether the failure was fatal. With non-fatal exceptions, the container tries to restart the consumer, according to the recoveryInterval or recoveryBackoff (for the SimpleMessageListenerContainer) or the monitorInterval (for the DirectMessageListenerContainer).

  • throwable: The Throwable that was caught.

These events can be consumed by implementing ApplicationListener<ListenerContainerConsumerFailedEvent>.

System-wide events (such as connection failures) are published by all consumers when concurrentConsumers is greater than 1.

If a consumer fails because one if its queues is being used exclusively, by default, as well as publishing the event, a DEBUG log is issued (since 3.1, previously WARN). To change this logging behavior, provide a custom ConditionalExceptionLogger in the AbstractMessageListenerContainer instance’s exclusiveConsumerExceptionLogger property. In addition, the SimpleMessageListenerContainer consumer restart after such an exception is now logged at DEBUG level by default (previously INFO). A new method logRestart() has been added to the ConditionalExceptionLogger to allow this to be changed.

Also, the AbstractMessageListenerContainer.DefaultExclusiveConsumerLogger is now public, allowing it to be sub classed.

Fatal errors are always logged at the ERROR level. This it not modifiable.

Several other events are published at various stages of the container lifecycle:

  • AsyncConsumerStartedEvent: When the consumer is started.

  • AsyncConsumerRestartedEvent: When the consumer is restarted after a failure - SimpleMessageListenerContainer only.

  • AsyncConsumerTerminatedEvent: When a consumer is stopped normally.

  • AsyncConsumerStoppedEvent: When the consumer is stopped - SimpleMessageListenerContainer only.

  • ConsumeOkEvent: When a consumeOk is received from the broker, contains the queue name and consumerTag

  • ListenerContainerIdleEvent: See Detecting Idle Asynchronous Consumers.

  • MissingQueueEvent: When a missing queue is detected.