Package com.atlassian.jira.cluster

Interface ClusterMessagingService

All Known Subinterfaces:
MessageHandlerService
All Known Implementing Classes:
DatabaseClusterMessagingService, OfBizMessageHandlerService
@ExperimentalApi public interface ClusterMessagingService
Service responsible for notifying ClusterMessageConsumer instances when messages are waiting to be processed. Also provides a mechanism for broadcasting messages to a channel.
Since:
v6.3

  • Method Details

    • registerListener

      void registerListener(String channel, ClusterMessageConsumer consumer)
      Register a ClusterMessageConsumer to receive messages sent to the nominated channel.

      The receive method of the ClusterMessageConsumer will be invoked when a message is sent to a channel it is listening to. Registering a new listener for a channel will not remove any existing listeners on that channel. Listeners are weakly referenced, it is the responsibility of the caller to ensure that listeners are not prematurely garbage collected.

      Parameters:
      channel - The name of the channel
      consumer - The consumer that will receive messages

    • unregisterListener

      void unregisterListener(String channel, ClusterMessageConsumer consumer)
      Removes a ClusterMessageConsumer from the channel.

      The ClusterMessageConsumer will no longer receive messages that are sent to the nominated channel.

      Parameters:
      channel - The name of the channel
      consumer - The consumer to be unregistered

    • unregisterListener

      void unregisterListener(ClusterMessageConsumer consumer)
      Removes a ClusterMessageConsumer from all channels.

      The ClusterMessageConsumer will no longer receive any messages.

      Parameters:
      consumer - The consumer to be unregistered

    • sendRemote

      void sendRemote(String channel, String message)
      Sends an inter-node message to registered listeners, listeners on the node the message was raised will not be notified.
      Parameters:
      channel - The name of the channel (up to 20 alphanumeric characters in length)
      message - The message to send (up to 200 characters in length)