org.everit.cluster.invalidationmap.support.scheduler

Class TaskScheduler

java.lang.Object

org.everit.cluster.invalidationmap.support.scheduler.TaskScheduler

All Implemented Interfaces:

org.everit.cluster.invalidationmap.InvalidationMapConfiguration

public class TaskScheduler
extends Object
implements org.everit.cluster.invalidationmap.InvalidationMapConfiguration

Task Scheduler for InvalidationMapCluster.

Constructor Summary

Constructors

Constructor and Description
TaskScheduler(NodeRegistry nodeRegistry, org.everit.cluster.invalidationmap.MapInvalidator invalidator, PingSender pingSender) Creates the task scheduler.

Method Summary

Modifier and Type	Method and Description
Runnable	createInvalidateAfterNodeCrashTask(String nodeName) Creates the task that performs the local map invalidation.
Runnable	createMessageOrderCheckTask(String nodeName, long lastPing) Creates the task that checks whether the got message numbers is in order.
Runnable	createPingSenderTask() Creates the task that sends a ping message to the members of the cluster.
long	getInvalidateAfterNodeCrashDelay()
long	getMessageOrderCheckDelay()
long	getPingPeriod()
void	scheduleInvalidateOnNodeCrash(String nodeName, boolean reSchedule) Schedules the local invalidate on node crash task.
void	scheduleMessageOrderCheck(String nodeName, long lastPingMessageNumber) Schedules the message order check task on the node, if previous scheduled task is not executed.
void	schedulePingSender() Schedules or reschedules the ping sender task.
void	setInvalidateAfterNodeCrashDelay(long invalidateAfterNodeCrashDelay)
void	setMessageOrderCheckDelay(long messageOrderCheckDelay)
void	setPingPeriod(long period)
void	shutdown() Shutdowns the scheduler.

Methods inherited from class java.lang.Object

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

Constructor Detail

TaskScheduler

public TaskScheduler(NodeRegistry nodeRegistry,
                     org.everit.cluster.invalidationmap.MapInvalidator invalidator,
                     PingSender pingSender)

Creates the task scheduler.

Parameters:

nodeRegistry - The node registry.

invalidator - The map invalidator.

pingSender - The ping sender.

Method Detail

createInvalidateAfterNodeCrashTask

public Runnable createInvalidateAfterNodeCrashTask(String nodeName)

Creates the task that performs the local map invalidation. Task will be invoked after the node crash timeout exceeds.

Parameters:

nodeName - The name of the node crashed.

Returns:

The local map invalidation task.

See Also:

scheduleInvalidateOnNodeCrash(String, boolean)

createMessageOrderCheckTask

public Runnable createMessageOrderCheckTask(String nodeName,
                                            long lastPing)

Creates the task that checks whether the got message numbers is in order. Task will be invoked if the message order check delay elapsed after a message lost is suspected on a node.

Parameters:

nodeName - The name of a suspected node.

lastPing - The last ping message number.

Returns:

The message order check task.

See Also:

scheduleMessageOrderCheck(String, long)

createPingSenderTask

public Runnable createPingSenderTask()

Creates the task that sends a ping message to the members of the cluster. Task will be invoked periodically with fixed delay.

Returns:

The ping task.

See Also:

schedulePingSender()

getInvalidateAfterNodeCrashDelay

public long getInvalidateAfterNodeCrashDelay()

Specified by:

getInvalidateAfterNodeCrashDelay in interface org.everit.cluster.invalidationmap.InvalidationMapConfiguration

getMessageOrderCheckDelay

public long getMessageOrderCheckDelay()

Specified by:

getMessageOrderCheckDelay in interface org.everit.cluster.invalidationmap.InvalidationMapConfiguration

getPingPeriod

public long getPingPeriod()

Specified by:

getPingPeriod in interface org.everit.cluster.invalidationmap.InvalidationMapConfiguration

scheduleInvalidateOnNodeCrash

public void scheduleInvalidateOnNodeCrash(String nodeName,
                                          boolean reSchedule)

Schedules the local invalidate on node crash task.

Parameters:

nodeName - The name of the node on the task will be invoked.

reSchedule - Schedules the task if necessary and set to true, cancels the task if necessary and set to false

See Also:

InvalidationMapTaskFactory#createInvalidateAfterNodeCrashTask(String)

scheduleMessageOrderCheck

public void scheduleMessageOrderCheck(String nodeName,
                                      long lastPingMessageNumber)

Schedules the message order check task on the node, if previous scheduled task is not executed.

Parameters:

nodeName - The name of the node on the message order check will be scheduled.

lastPingMessageNumber - The message number of the last ping.

See Also:

InvalidationMapTaskFactory#createMessageOrderCheckTask(String, long)

schedulePingSender

public void schedulePingSender()

Schedules or reschedules the ping sender task.

See Also:

InvalidationMapTaskFactory#createPingSenderTask()

setInvalidateAfterNodeCrashDelay

public void setInvalidateAfterNodeCrashDelay(long invalidateAfterNodeCrashDelay)

Specified by:

setInvalidateAfterNodeCrashDelay in interface org.everit.cluster.invalidationmap.InvalidationMapConfiguration

setMessageOrderCheckDelay

public void setMessageOrderCheckDelay(long messageOrderCheckDelay)

Specified by:

setMessageOrderCheckDelay in interface org.everit.cluster.invalidationmap.InvalidationMapConfiguration

setPingPeriod

public void setPingPeriod(long period)

Specified by:

setPingPeriod in interface org.everit.cluster.invalidationmap.InvalidationMapConfiguration

shutdown

public void shutdown()

Shutdowns the scheduler.