| package org.apache.helix.api.listeners; |
| |
| /* |
| * 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. |
| */ |
| |
| import java.util.List; |
| import org.apache.helix.NotificationContext; |
| import org.apache.helix.model.CurrentState; |
| |
| /** |
| * Interface to implement to respond to changes in the current state |
| */ |
| public interface CurrentStateChangeListener { |
| |
| /** |
| * Invoked when current state changes |
| * @param instanceName name of the instance whose state changed |
| * @param statesInfo a list of the current states |
| * @param changeContext the change event and state |
| */ |
| void onStateChange(String instanceName, List<CurrentState> statesInfo, |
| NotificationContext changeContext); |
| |
| } |