org.elasticsearch.gateway

Class GatewayMetaState

java.lang.Object

org.elasticsearch.common.component.AbstractComponent

org.elasticsearch.gateway.GatewayMetaState

All Implemented Interfaces:

ClusterStateListener

public class GatewayMetaState
extends AbstractComponent
implements ClusterStateListener

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	GatewayMetaState.IndexMetaWriteInfo

Field Summary

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

deprecationLogger, logger, settings

Constructor Summary

Constructors

Constructor and Description
GatewayMetaState(Settings settings, NodeEnvironment nodeEnv, MetaStateService metaStateService, DanglingIndicesState danglingIndicesState, TransportNodesListGatewayMetaState nodesListGatewayMetaState, MetaDataIndexUpgradeService metaDataIndexUpgradeService)

Method Summary

Methods

Modifier and Type	Method and Description
void	clusterChanged(ClusterChangedEvent event) Called when cluster state changes.
static Set<String>	getRelevantIndices(ClusterState state, ClusterState previousState, com.google.common.collect.ImmutableSet<String> previouslyWrittenIndices)
static Set<String>	getRelevantIndicesForMasterEligibleNode(ClusterState state)
static Set<String>	getRelevantIndicesOnDataOnlyNode(ClusterState state, ClusterState previousState, com.google.common.collect.ImmutableSet<String> previouslyWrittenIndices)
protected static boolean	isDataOnlyNode(ClusterState state)
MetaData	loadMetaState()
static Iterable<GatewayMetaState.IndexMetaWriteInfo>	resolveStatesToBeWritten(com.google.common.collect.ImmutableSet<String> previouslyWrittenIndices, Set<String> potentiallyUnwrittenIndices, MetaData previousMetaData, MetaData newMetaData) Loads the current meta state for each index in the new cluster state and checks if it has to be persisted.

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

logDeprecatedSetting, logRemovedSetting, nodeName

Methods inherited from class java.lang.Object

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

Constructor Detail

GatewayMetaState

@Inject
public GatewayMetaState(Settings settings,
                       NodeEnvironment nodeEnv,
                       MetaStateService metaStateService,
                       DanglingIndicesState danglingIndicesState,
                       TransportNodesListGatewayMetaState nodesListGatewayMetaState,
                       MetaDataIndexUpgradeService metaDataIndexUpgradeService)
                 throws Exception

Throws:

Exception

Method Detail

loadMetaState

public MetaData loadMetaState()
                       throws Exception

Throws:

Exception

clusterChanged

public void clusterChanged(ClusterChangedEvent event)

Description copied from interface: ClusterStateListener

Called when cluster state changes.

Specified by:

clusterChanged in interface ClusterStateListener

getRelevantIndices

public static Set<String> getRelevantIndices(ClusterState state,
                             ClusterState previousState,
                             com.google.common.collect.ImmutableSet<String> previouslyWrittenIndices)

isDataOnlyNode

protected static boolean isDataOnlyNode(ClusterState state)

resolveStatesToBeWritten

public static Iterable<GatewayMetaState.IndexMetaWriteInfo> resolveStatesToBeWritten(com.google.common.collect.ImmutableSet<String> previouslyWrittenIndices,
                                                                     Set<String> potentiallyUnwrittenIndices,
                                                                     MetaData previousMetaData,
                                                                     MetaData newMetaData)

Loads the current meta state for each index in the new cluster state and checks if it has to be persisted. Each index state that should be written to disk will be returned. This is only run for data only nodes. It will return only the states for indices that actually have a shard allocated on the current node.

Parameters:

previouslyWrittenIndices - A list of indices for which the state was already written before

potentiallyUnwrittenIndices - The list of indices for which state should potentially be written

previousMetaData - The last meta data we know of. meta data for all indices in previouslyWrittenIndices list is persisted now

newMetaData - The new metadata

Returns:

iterable over all indices states that should be written to disk

getRelevantIndicesOnDataOnlyNode

public static Set<String> getRelevantIndicesOnDataOnlyNode(ClusterState state,
                                           ClusterState previousState,
                                           com.google.common.collect.ImmutableSet<String> previouslyWrittenIndices)

getRelevantIndicesForMasterEligibleNode

public static Set<String> getRelevantIndicesForMasterEligibleNode(ClusterState state)