org.graylog2.plugin.periodical

Class Periodical

java.lang.Object

org.graylog2.plugin.periodical.Periodical

All Implemented Interfaces:

Runnable

Direct Known Subclasses:

AlertScannerThread, BatchedElasticSearchOutputFlushThread, ClusterEventCleanupPeriodical, ClusterEventPeriodical, ClusterHealthCheckThread, ContentPackLoaderPeriodical, ESVersionCheckPeriodical, EventNotificationStatusCleanUp, GarbageCollectionWarningThread, IndexBlockCheck, IndexerClusterCheckerThread, IndexFieldTypePollerPeriodical, IndexRangesCleanupPeriodical, IndexRetentionThread, IndexRotationThread, LegacyDefaultStreamMigration, NodePingThread, PurgeExpiredConfigurationUploads, PurgeExpiredSidecarsThread, ScheduleTriggerCleanUp, SearchesCleanUpJob, ThrottleStateUpdaterThread, ThroughputCalculator, TrafficCounterCalculator, UserSessionTerminationPeriodical, VersionCheckThread

public abstract class Periodical
extends Object
implements Runnable

Constructor Summary

Constructors

Constructor and Description
Periodical()

Method Summary

Modifier and Type	Method and Description
abstract void	doRun()
abstract int	getInitialDelaySeconds()
protected abstract org.slf4j.Logger	getLogger()
int	getParallelism()
abstract int	getPeriodSeconds()
void	initialize()
abstract boolean	isDaemon() Should this periodical be run as a daemon thread?
boolean	leaderOnly() Determines if this periodical should run only on the leader node.
boolean	masterOnly() Deprecated. Use leaderOnly() instead.
void	run()
abstract boolean	runsForever() Defines if this thread should be called periodically or only once on startup.
abstract boolean	startOnThisNode() Start on this node? Useful to decide if to start the periodical based on local configuration.
abstract boolean	stopOnGracefulShutdown() Should this thread be stopped when a graceful shutdown is in progress? This means that stop() is called and that is no longer triggered periodically.

Methods inherited from class java.lang.Object

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

Constructor Detail

Periodical

public Periodical()

Method Detail

runsForever

public abstract boolean runsForever()

Defines if this thread should be called periodically or only once on startup.

Returns:

stopOnGracefulShutdown

public abstract boolean stopOnGracefulShutdown()

Should this thread be stopped when a graceful shutdown is in progress? This means that stop() is called and that is no longer triggered periodically.

Returns:

masterOnly

@Deprecated
public boolean masterOnly()

Deprecated. Use leaderOnly() instead.

Only start this thread on leader nodes?

leaderOnly

public boolean leaderOnly()

Determines if this periodical should run only on the leader node.

Returns:

false (default) if this periodical may run on every node. true if it may run only on the leader node

startOnThisNode

public abstract boolean startOnThisNode()

Start on this node? Useful to decide if to start the periodical based on local configuration.

Returns:

isDaemon

public abstract boolean isDaemon()

Should this periodical be run as a daemon thread?

Returns:

getInitialDelaySeconds

public abstract int getInitialDelaySeconds()

Returns:

Seconds to wait before starting the thread. 0 for runsForever() threads.

getPeriodSeconds

public abstract int getPeriodSeconds()

Returns:

How long to wait between each execution of the thread. 0 for runsForever() threads.

initialize

public void initialize()

run

public void run()

Specified by:

run in interface Runnable

getLogger

@Nonnull
protected abstract org.slf4j.Logger getLogger()

doRun

public abstract void doRun()

getParallelism

public int getParallelism()