Package org.elasticsearch.cluster

Class ClusterChangedEvent

java.lang.Object

org.elasticsearch.cluster.ClusterChangedEvent

public class ClusterChangedEvent
extends Object

An event received by the local node, signaling that the cluster state has changed.

Constructor Summary

Constructors

Constructor	Description
ClusterChangedEvent(String source, ClusterState state, ClusterState previousState)

Method Summary

Modifier and Type	Method	Description
boolean	blocksChanged()	Returns true iff the cluster level blocks have changed between cluster states.
Set<String>	changedCustomMetadataSet()	Returns a set of custom meta data types when any custom metadata for the cluster has changed between the previous cluster state and the new cluster state.
static boolean	indexMetadataChanged(IndexMetadata metadata1, IndexMetadata metadata2)	Returns true iff the IndexMetadata for a given index has changed between the previous cluster state and the new cluster state.
boolean	indexRoutingTableChanged(String index)	Returns true iff the routing table has changed for the given index.
List<String>	indicesCreated()	Returns the indices created in this event
List<Index>	indicesDeleted()	Returns the indices deleted in this event
boolean	isNewCluster()	Determines whether or not the current cluster state represents an entirely new cluster, either when a node joins a cluster for the first time or when the node receives a cluster state update from a brand new cluster (different UUID from the previous cluster), which will happen when a master node is elected that has never been part of the cluster before.
boolean	localNodeMaster()	Returns true iff the local node is the mater node of the cluster.
boolean	metadataChanged()	Returns true iff the metadata for the cluster has changed between the previous cluster state and the new cluster state.
boolean	nodesAdded()	Returns true iff nodes have been added from the cluster since the last cluster state.
boolean	nodesChanged()	Returns true iff nodes have been changed (added or removed) from the cluster since the last cluster state.
DiscoveryNodes.Delta	nodesDelta()	Returns the DiscoveryNodes.Delta between the previous cluster state and the new cluster state.
boolean	nodesRemoved()	Returns true iff nodes have been removed from the cluster since the last cluster state.
ClusterState	previousState()	The previous cluster state for this change event.
boolean	routingTableChanged()	Returns true if the routing tables (for all indices) have changed between the previous cluster state and the current cluster state.
String	source()	The source that caused this cluster event to be raised.
ClusterState	state()	The new cluster state that caused this change event.

Methods inherited from class java.lang.Object

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

Constructor Details

ClusterChangedEvent

public ClusterChangedEvent(String source,
 ClusterState state,
 ClusterState previousState)

Method Details

source

public String source()

The source that caused this cluster event to be raised.

state

public ClusterState state()

The new cluster state that caused this change event.

previousState

public ClusterState previousState()

The previous cluster state for this change event.

routingTableChanged

public boolean routingTableChanged()

Returns true if the routing tables (for all indices) have changed between the previous cluster state and the current cluster state. Note that this is an object reference equality test, not an equals test.

indexRoutingTableChanged

public boolean indexRoutingTableChanged(String index)

Returns true iff the routing table has changed for the given index. Note that this is an object reference equality test, not an equals test.

indicesCreated

public List<String> indicesCreated()

Returns the indices created in this event

indicesDeleted

public List<Index> indicesDeleted()

Returns the indices deleted in this event

metadataChanged

public boolean metadataChanged()

Returns true iff the metadata for the cluster has changed between the previous cluster state and the new cluster state. Note that this is an object reference equality test, not an equals test.

changedCustomMetadataSet

public Set<String> changedCustomMetadataSet()

Returns a set of custom meta data types when any custom metadata for the cluster has changed between the previous cluster state and the new cluster state. custom meta data types are returned iff they have been added, updated or removed between the previous and the current state

indexMetadataChanged

public static boolean indexMetadataChanged(IndexMetadata metadata1,
 IndexMetadata metadata2)

Returns true iff the IndexMetadata for a given index has changed between the previous cluster state and the new cluster state. Note that this is an object reference equality test, not an equals test.

blocksChanged

public boolean blocksChanged()

Returns true iff the cluster level blocks have changed between cluster states. Note that this is an object reference equality test, not an equals test.

localNodeMaster

public boolean localNodeMaster()

Returns true iff the local node is the mater node of the cluster.

nodesDelta

public DiscoveryNodes.Delta nodesDelta()

Returns the DiscoveryNodes.Delta between the previous cluster state and the new cluster state.

nodesRemoved

public boolean nodesRemoved()

Returns true iff nodes have been removed from the cluster since the last cluster state.

nodesAdded

public boolean nodesAdded()

Returns true iff nodes have been added from the cluster since the last cluster state.

nodesChanged

public boolean nodesChanged()

Returns true iff nodes have been changed (added or removed) from the cluster since the last cluster state.

isNewCluster

public boolean isNewCluster()

Determines whether or not the current cluster state represents an entirely new cluster, either when a node joins a cluster for the first time or when the node receives a cluster state update from a brand new cluster (different UUID from the previous cluster), which will happen when a master node is elected that has never been part of the cluster before.