| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF 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.apache.hyracks.api.application; |
| |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.hyracks.api.exceptions.HyracksException; |
| |
| /** |
| * A listener interface for providing notification call backs to events such as a Node Controller joining/leaving the |
| * cluster. |
| */ |
| public interface IClusterLifecycleListener { |
| |
| public enum ClusterEventType { |
| NODE_JOIN, |
| NODE_FAILURE, |
| NODE_SHUTTING_DOWN //node shutting down gracefully |
| } |
| |
| /** |
| * @param nodeId |
| * A unique identifier of a Node Controller |
| * @param ncConfiguration |
| * A map containing the set of configuration parameters that were used to start the Node Controller |
| */ |
| public void notifyNodeJoin(String nodeId, Map<String, String> ncConfiguration) throws HyracksException; |
| |
| /** |
| * @param deadNodeIds |
| * A set of Node Controller Ids that have left the cluster. The set is not cumulative. |
| */ |
| public void notifyNodeFailure(Set<String> deadNodeIds) throws HyracksException; |
| |
| } |