Class TimestampFieldMapperService

All Implemented Interfaces:
Closeable, 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.
  • Constructor Details

  • 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)
      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.