/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you under
* the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.elasticsearch.cluster;
import org.elasticsearch.cluster.service.ClusterService;
/**
* A component that is in charge of applying an incoming cluster state to the node internal data structures.
* The single apply method is called before the cluster state becomes visible via {@link ClusterService#state()}.
*/
public interface ClusterStateApplier {
/**
* Called when a new cluster state ({@link ClusterChangedEvent#state()} needs to be applied
*/
void applyClusterState(ClusterChangedEvent event);
}