co.cask.cdap.data.stream.service.heartbeat

Class NoOpHeartbeatPublisher

java.lang.Object

com.google.common.util.concurrent.AbstractIdleService

co.cask.cdap.data.stream.service.heartbeat.NoOpHeartbeatPublisher

All Implemented Interfaces:

HeartbeatPublisher, com.google.common.util.concurrent.Service

public class NoOpHeartbeatPublisher
extends com.google.common.util.concurrent.AbstractIdleService
implements HeartbeatPublisher

No-op implementation, to remove once notifications are here.

Nested Class Summary

Nested classes/interfaces inherited from interface com.google.common.util.concurrent.Service

com.google.common.util.concurrent.Service.Listener, com.google.common.util.concurrent.Service.State

Constructor Summary

Constructors

Constructor and Description
NoOpHeartbeatPublisher()

Method Summary

Methods

Modifier and Type	Method and Description
com.google.common.util.concurrent.ListenableFuture<StreamWriterHeartbeat>	sendHeartbeat(StreamWriterHeartbeat heartbeat) Publish one heartbeat.
protected void	shutDown()
protected void	startUp()

Methods inherited from class com.google.common.util.concurrent.AbstractIdleService

addListener, executor, isRunning, start, startAndWait, state, stop, stopAndWait, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.google.common.util.concurrent.Service

addListener, isRunning, start, startAndWait, state, stop, stopAndWait

Constructor Detail

NoOpHeartbeatPublisher

public NoOpHeartbeatPublisher()

Method Detail

startUp

protected void startUp()
                throws Exception

Specified by:

startUp in class com.google.common.util.concurrent.AbstractIdleService

Throws:

Exception

shutDown

protected void shutDown()
                 throws Exception

Specified by:

shutDown in class com.google.common.util.concurrent.AbstractIdleService

Throws:

Exception

sendHeartbeat

public com.google.common.util.concurrent.ListenableFuture<StreamWriterHeartbeat> sendHeartbeat(StreamWriterHeartbeat heartbeat)

Description copied from interface: HeartbeatPublisher

Publish one heartbeat.

Specified by:

sendHeartbeat in interface HeartbeatPublisher

Parameters:

heartbeat - heartbeat to publish

Returns:

a ListenableFuture describing the state of publishing. The Future.get() method will return the published heartbeat.