InitEventHub initialize event hub.

Publish pushlish event to topic @param topic Topic name @param event Event object.

Shutdown shutdown event hub.

Subscribe subscribe topic.

SubscribeWithFunc subscribe topic use func.

WithQueueSize set event queue size.

CacheClientEventTopic record cache occur client add/update/del event.

CacheInstanceEventTopic record cache occur instance add/update/del event.

CacheNamespaceEventTopic record cache occur namespace add/update/del event.

ClientEventTopic .

ConfigFilePublishTopic config file release publish.

EventCreated value create event.

EventDeleted value delete event.

EventUpdated value update event.

InstanceEventTopic discover event.

LeaderChangeEventTopic leader change.

PublishConfigFileEvent 事件对象，包含类型和事件消息.

PublishOption .

SubOptions subscripion options.

Event evnt type.

Handler event handler.

EventType common event type.

SubOption subscription option func.