/**
* 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 backtype.storm.nimbus;
/**
* @author xiaojian.fxj
*/
import java.util.Map;
/**
* A plugin interface that gets invoked any time there is an action for a topology.
*/
public interface ITopologyActionNotifierPlugin {
/**
* Called once during nimbus initialization.
*/
void prepare(Map StormConf);
/**
* When a new action is executed for a topology, this method will be called.
*/
void notify(String topologyName, String action);
/**
* called during shutdown.
*/
void cleanup();
}