package com.thinkbiganalytics.cluster;
/*-
* #%L
* kylo-cluster-manager-api
* %%
* Copyright (C) 2017 ThinkBig Analytics
* %%
* Licensed 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.
* #L%
*/
import java.util.List;
/**
* Listen for Cluster Events
*/
public interface ClusterServiceListener {
/**
* Called when a member is added/removed from the cluster
* @param previousMembers the prev members in the cluster
* @param currentMembers the current memebrs in the cluster
*/
void onClusterMembershipChanged(List<String> previousMembers, List<String> currentMembers);
/**
* Called the first time a Node connects to the cluster
* @param currentMembers the list of current members in the cluster
*/
void onConnected(List<String> currentMembers);
/**
* Called when a node is disconnected
* @param currentMembers the list of current members in the cluster
*/
void onDisconnected(List<String> currentMembers);
/**
* Called when the cluster is closed
* @param currentMembers the list of current members in the cluster
*/
void onClosed(List<String> currentMembers);
}