/**
 * 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 com.alibaba.jstorm.task.master;

public interface TMHandler {
    /**
     * Init TMHandler
     *
     * @param tmContext topology master context
     */
    void init(TopologyMasterContext tmContext);

    /**
     * Process Event
     *
     * @param event event
     */
    void process(Object event) throws Exception;

    /**
     * Do cleanup job
     * Note that a TMHandler maybe be registered multiple times,
     * it is likely cleanup could be called multiple times.
     */
    void cleanup();
}
