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A lightweight library to execute external processes from Java.

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/*
 * Copyright (C) 2014 ZeroTurnaround 
 * Contains fragments of code from Apache Commons Exec, rights owned
 * by Apache Software Foundation (ASF).
 *
 * 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 org.zeroturnaround.exec.listener;

import org.zeroturnaround.exec.ProcessExecutor;

/**
 * Process event handler that wraps a process destroyer.
 *
 * @author Rein Raudjärv
 *
 * @see ProcessDestroyer
 */
public class DestroyerListenerAdapter extends ProcessListener {

  private final ProcessDestroyer destroyer;

  public DestroyerListenerAdapter(ProcessDestroyer destroyer) {
    if (destroyer == null)
      throw new IllegalArgumentException("Process destroyer must be provided.");
    this.destroyer = destroyer;
  }

  @Override
  public void afterStart(Process process, ProcessExecutor executor) {
    destroyer.add(process);
  }

  @Override
  public void afterStop(Process process) {
    destroyer.remove(process);
  }

}