Package org.elasticsearch.cluster.coordination

Class Coordinator

java.lang.Object

org.elasticsearch.common.component.AbstractLifecycleComponent

org.elasticsearch.cluster.coordination.Coordinator

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, ClusterStatePublisher, LifecycleComponent, Releasable, Discovery

public class Coordinator
extends AbstractLifecycleComponent
implements Discovery

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Coordinator.Mode

Nested classes/interfaces inherited from interface org.elasticsearch.cluster.coordination.ClusterStatePublisher

ClusterStatePublisher.AckListener

Field Summary

Fields

Modifier and Type	Field	Description
static Setting<TimeValue>	PUBLISH_TIMEOUT_SETTING
static long	ZEN1_BWC_TERM

Fields inherited from class org.elasticsearch.common.component.AbstractLifecycleComponent

lifecycle

Constructor Summary

Constructors

Constructor

Description

Coordinator(java.lang.String nodeName, Settings settings, ClusterSettings clusterSettings, TransportService transportService, NamedWriteableRegistry namedWriteableRegistry, AllocationService allocationService, MasterService masterService, java.util.function.Supplier<CoordinationState.PersistedState> persistedStateSupplier, SeedHostsProvider seedHostsProvider, ClusterApplier clusterApplier, java.util.Collection<java.util.function.BiConsumer<DiscoveryNode,ClusterState>> onJoinValidators, java.util.Random random, RerouteService rerouteService, ElectionStrategy electionStrategy)

Method Summary

Modifier and Type	Method	Description
static Settings.Builder	addZen1Attribute(boolean isZen1Node, Settings.Builder builder)
protected void	doClose()
protected void	doStart()
protected void	doStop()
ClusterState	getApplierState()
java.lang.Iterable<DiscoveryNode>	getFoundPeers()
ClusterState	getLastAcceptedState()
java.util.Collection<java.util.function.BiConsumer<DiscoveryNode,ClusterState>>	getOnJoinValidators()
void	invariant()
boolean	isInitialConfigurationSet()
static boolean	isZen1Node(DiscoveryNode discoveryNode)
void	publish(ClusterChangedEvent clusterChangedEvent, ActionListener<java.lang.Void> publishListener, ClusterStatePublisher.AckListener ackListener)	Publish all the changes to the cluster from the master (can be called just by the master).
boolean	setInitialConfiguration(CoordinationMetaData.VotingConfiguration votingConfiguration)	Sets the initial configuration to the given CoordinationMetaData.VotingConfiguration.
void	startInitialJoin()	Triggers the first join cycle
DiscoveryStats	stats()

Methods inherited from class org.elasticsearch.common.component.AbstractLifecycleComponent

addLifecycleListener, close, lifecycleState, removeLifecycleListener, start, stop

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.elasticsearch.common.component.LifecycleComponent

addLifecycleListener, lifecycleState, removeLifecycleListener, start, stop

Methods inherited from interface org.elasticsearch.common.lease.Releasable

close

Field Detail

ZEN1_BWC_TERM

public static final long ZEN1_BWC_TERM

See Also:

Constant Field Values

PUBLISH_TIMEOUT_SETTING

public static final Setting<TimeValue> PUBLISH_TIMEOUT_SETTING

Constructor Detail

Coordinator

public Coordinator(java.lang.String nodeName,
                   Settings settings,
                   ClusterSettings clusterSettings,
                   TransportService transportService,
                   NamedWriteableRegistry namedWriteableRegistry,
                   AllocationService allocationService,
                   MasterService masterService,
                   java.util.function.Supplier<CoordinationState.PersistedState> persistedStateSupplier,
                   SeedHostsProvider seedHostsProvider,
                   ClusterApplier clusterApplier,
                   java.util.Collection<java.util.function.BiConsumer<DiscoveryNode,ClusterState>> onJoinValidators,
                   java.util.Random random,
                   RerouteService rerouteService,
                   ElectionStrategy electionStrategy)

Parameters:

nodeName - The name of the node, used to name the ExecutorService of the SeedHostsResolver.

onJoinValidators - A collection of join validators to restrict which nodes may join the cluster.

Method Detail

doStart

protected void doStart()

Specified by:

doStart in class AbstractLifecycleComponent

stats

public DiscoveryStats stats()

Specified by:

stats in interface Discovery

Returns:

stats about the discovery

startInitialJoin

public void startInitialJoin()

Description copied from interface: Discovery

Triggers the first join cycle

Specified by:

startInitialJoin in interface Discovery

doStop

protected void doStop()

Specified by:

doStop in class AbstractLifecycleComponent

doClose

protected void doClose()

Specified by:

doClose in class AbstractLifecycleComponent

invariant

public void invariant()

isInitialConfigurationSet

public boolean isInitialConfigurationSet()

setInitialConfiguration

public boolean setInitialConfiguration(CoordinationMetaData.VotingConfiguration votingConfiguration)

Sets the initial configuration to the given CoordinationMetaData.VotingConfiguration. This method is safe to call more than once, as long as the argument to each call is the same.

Parameters:

votingConfiguration - The nodes that should form the initial configuration.

Returns:

whether this call successfully set the initial configuration - if false, the cluster has already been bootstrapped.

getLastAcceptedState

public ClusterState getLastAcceptedState()

getApplierState

@Nullable
public ClusterState getApplierState()

publish

public void publish(ClusterChangedEvent clusterChangedEvent,
                    ActionListener<java.lang.Void> publishListener,
                    ClusterStatePublisher.AckListener ackListener)

Description copied from interface: ClusterStatePublisher

Publish all the changes to the cluster from the master (can be called just by the master). The publish process should apply this state to the master as well! The publishListener allows to wait for the publication to complete, which can be either successful completion, timing out or failing. The method is guaranteed to pass back a FailedToCommitClusterStateException to the publishListener if the change is not committed and should be rejected. Any other exception signals that something bad happened but the change is committed. The ClusterStatePublisher.AckListener allows to keep track of the ack received from nodes, and verify whether they updated their own cluster state or not.

Specified by:

publish in interface ClusterStatePublisher

getOnJoinValidators

public java.util.Collection<java.util.function.BiConsumer<DiscoveryNode,ClusterState>> getOnJoinValidators()

getFoundPeers

public java.lang.Iterable<DiscoveryNode> getFoundPeers()

addZen1Attribute

public static Settings.Builder addZen1Attribute(boolean isZen1Node,
                                                Settings.Builder builder)

isZen1Node

public static boolean isZen1Node(DiscoveryNode discoveryNode)