Package org.elasticsearch.indices

Class TimestampFieldMapperService

java.lang.Object

org.elasticsearch.common.component.AbstractLifecycleComponent

org.elasticsearch.indices.TimestampFieldMapperService

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, ClusterStateApplier, LifecycleComponent, Releasable

public class TimestampFieldMapperService
extends AbstractLifecycleComponent
implements ClusterStateApplier

Tracks the mapping of the @timestamp field of immutable indices that expose their timestamp range in their index metadata. Coordinating nodes do not have (easy) access to mappings for all indices, so we extract the type of this one field from the mapping here.

Field Summary

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

lifecycle

Constructor Summary

Constructors

Constructor	Description
TimestampFieldMapperService(Settings settings, ThreadPool threadPool, IndicesService indicesService)

Method Summary

Modifier and Type	Method	Description
void	applyClusterState(ClusterChangedEvent event)	Called when a new cluster state (ClusterChangedEvent.state() needs to be applied.
protected void	doClose()
protected void	doStart()
protected void	doStop()
DateFieldMapper.DateFieldType	getTimestampFieldType(Index index)

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

Constructor Details

TimestampFieldMapperService

public TimestampFieldMapperService(Settings settings, ThreadPool threadPool, IndicesService indicesService)

Method Details

doStart

protected void doStart()

Specified by:

doStart in class AbstractLifecycleComponent

doStop

protected void doStop()

Specified by:

doStop in class AbstractLifecycleComponent

doClose

protected void doClose()

Specified by:

doClose in class AbstractLifecycleComponent

applyClusterState

public void applyClusterState(ClusterChangedEvent event)

Description copied from interface: ClusterStateApplier

Called when a new cluster state (ClusterChangedEvent.state() needs to be applied. The cluster state to be applied is already committed when this method is called, so an applier must therefore be prepared to deal with any state it receives without throwing an exception. Throwing an exception from an applier is very bad because it will stop the application of this state before it has reached all the other appliers, and will likely result in another attempt to apply the same (or very similar) cluster state which might continue until this node is removed from the cluster.

Specified by:

applyClusterState in interface ClusterStateApplier

getTimestampFieldType

@Nullable public DateFieldMapper.DateFieldType getTimestampFieldType(Index index)

Returns:

the field type of the @timestamp field of the given index, or null if: - the index is not found, - the field is not found, - the mapping is not known yet, or - the field is not a timestamp field.