neutron_lib.agent.topics module

neutron_lib.agent.topics.get_topic_name(prefix, table, operation, host=None)

Create a topic name.

The topic name needs to be synced between the agent and the plugin. The plugin will send a fanout message to all of the listening agents so that the agents in turn can perform their updates accordingly.

Parameters:

  • prefix – Common prefix for the plugin/agent message queues.

  • table – The table in question (NETWORK, SUBNET, PORT).

  • operation – The operation that invokes notification (CREATE, DELETE, UPDATE)

  • host – Add host to the topic

Returns:

The topic name.