org.neo4j.kernel.ha

Class MasterUpdatePuller

java.lang.Object

org.neo4j.kernel.ha.MasterUpdatePuller

All Implemented Interfaces:

UpdatePuller

public class MasterUpdatePuller
extends Object
implements UpdatePuller

Masters implementation of update puller that does nothing since master should not pull updates.

Nested Class Summary

Nested classes/interfaces inherited from interface org.neo4j.kernel.ha.UpdatePuller

UpdatePuller.Condition

Field Summary

Fields

Modifier and Type	Field and Description
static MasterUpdatePuller	INSTANCE

Method Summary

Modifier and Type	Method and Description
void	pullUpdates() Pull all available updates.
void	pullUpdates(UpdatePuller.Condition condition, boolean assertPullerActive) Pull updates and waits for the supplied condition to be fulfilled as part of the update pulling happening.
void	start() Start update pulling
void	stop() Terminate update pulling
boolean	tryPullUpdates() Try to pull all updates

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

INSTANCE

public static final MasterUpdatePuller INSTANCE

Method Detail

start

public void start()

Description copied from interface: UpdatePuller

Start update pulling

Specified by:

start in interface UpdatePuller

stop

public void stop()

Description copied from interface: UpdatePuller

Terminate update pulling

Specified by:

stop in interface UpdatePuller

pullUpdates

public void pullUpdates()
                 throws InterruptedException

Description copied from interface: UpdatePuller

Pull all available updates.

Specified by:

pullUpdates in interface UpdatePuller

Throws:

InterruptedException - in case if interrupted while waiting for updates

tryPullUpdates

public boolean tryPullUpdates()
                       throws InterruptedException

Description copied from interface: UpdatePuller

Try to pull all updates

Specified by:

tryPullUpdates in interface UpdatePuller

Returns:

true if all updates pulled, false if updater fail on update retrieval

Throws:

InterruptedException - in case if interrupted while waiting for updates

pullUpdates

public void pullUpdates(UpdatePuller.Condition condition,
                        boolean assertPullerActive)
                 throws InterruptedException

Description copied from interface: UpdatePuller

Pull updates and waits for the supplied condition to be fulfilled as part of the update pulling happening.

Specified by:

pullUpdates in interface UpdatePuller

Parameters:

condition - UpdatePuller.Condition to wait for.

assertPullerActive - if true then observing an inactive update puller will throw an IllegalStateException,

Throws:

InterruptedException - if we were interrupted while awaiting the condition.