org.apache.druid.segment.realtime.firehose

Interface ChatHandlerProvider

All Known Implementing Classes:

NoopChatHandlerProvider, ServiceAnnouncingChatHandlerProvider

public interface ChatHandlerProvider

Method Summary

Modifier and Type	Method and Description
com.google.common.base.Optional<ChatHandler>	get(String key) Retrieves a chat handler.
void	register(String key, ChatHandler handler) Registers a chat handler which provides an API for others to talk to objects in the indexing service.
void	register(String key, ChatHandler handler, boolean announce) Registers a chat handler which provides an API for others to talk to objects in the indexing service.
void	unregister(String key) Unregisters a chat handler.

Method Detail

register

void register(String key,
              ChatHandler handler)

Registers a chat handler which provides an API for others to talk to objects in the indexing service. Depending on the implementation, this method may also announce this node so that it can be discovered by other services.

Parameters:

key - a unique name identifying this service

handler - instance which implements the API to be exposed

register

void register(String key,
              ChatHandler handler,
              boolean announce)

Registers a chat handler which provides an API for others to talk to objects in the indexing service. Setting announce to false instructs the implementation to only register the handler to expose the API and skip any discovery announcements that might have been broadcast.

Parameters:

key - a unique name identifying this service

handler - instance which implements the API to be exposed

announce - for implementations that have a service discovery mechanism, whether this node should be announced

unregister

void unregister(String key)

Unregisters a chat handler.

Parameters:

key - the name of the service

get

com.google.common.base.Optional<ChatHandler> get(String key)

Retrieves a chat handler.

Parameters:

key - the name of the service