/*
* Copyright © 2014 Cask Data, Inc.
*
* 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.
*/
package co.cask.cdap.api;
/**
* Defines program lifecycle.
* @param <T> type of the program runtime context
*/
public interface ProgramLifecycle<T extends RuntimeContext> {
/**
* Initializes a Program.
* <p>
* This method will be called only once per {@link co.cask.cdap.api.ProgramLifecycle} instance.
* </p>
* @param context An instance of {@link RuntimeContext}
* @throws Exception If there is any error during initialization.
*/
void initialize(T context) throws Exception;
/**
* Destroy is the last thing that gets called before the program is
* shutdown. So, if there are any cleanups then they can be specified here.
*/
void destroy();
}