NewSingleTargetMessage creates a new TargetMessage to be sent to a target server, with a single message.

CoordinatorTopic is the topic of the coordinator.

DispatcherManagerTopic is the topic of the dispatcher manager.

EventCollectorTopic is the topic of the event collector.

EventServiceTopic is the topic of the event service.

EventStoreTopic is the topic of the event store.

HeartbeatCollectorTopic is the topic of the heartbeat collector.

LogCoordinatorTopic is the topic of the log coordinator.

MaintainerManagerTopic is the topic of the maintainer manager.

MaintainerTopic is the topic of the maintainer.

LogService related.

LogCoordinator related.

TargetMessage is a wrapper of message to be sent to a target server.

MessageCenter is the interface to send and receive messages to/from other targets.

MessageReceiver is the interface to receive messages from other targets.

MessageSender is the interface for sending messages to the target.