org.elasticsearch.cluster

Interface ClusterStateObserver.ChangePredicate

All Known Implementing Classes:

ClusterStateObserver.EventPredicate, ClusterStateObserver.ValidationPredicate

Enclosing class:

ClusterStateObserver

public static interface ClusterStateObserver.ChangePredicate

Method Summary

Methods

Modifier and Type	Method and Description
boolean	apply(ClusterChangedEvent changedEvent) called to see whether a cluster change should be accepted
boolean	apply(ClusterState previousState, ClusterState.ClusterStateStatus previousStatus, ClusterState newState, ClusterState.ClusterStateStatus newStatus) a rough check used when starting to monitor for a new change.

Method Detail

apply

boolean apply(ClusterState previousState,
            ClusterState.ClusterStateStatus previousStatus,
            ClusterState newState,
            ClusterState.ClusterStateStatus newStatus)

a rough check used when starting to monitor for a new change. Called infrequently can be less accurate.

Returns:

true if newState should be accepted

apply

boolean apply(ClusterChangedEvent changedEvent)

called to see whether a cluster change should be accepted

Returns:

true if changedEvent.state() should be accepted