SystemProcess.java

/**
 * Copyright 2015 StreamSets Inc.
 *
 * Licensed under 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.streamsets.pipeline.util;

import java.io.IOException;
import java.util.Collection;
import java.util.Map;
import java.util.concurrent.TimeUnit;

public interface SystemProcess {
  public void start() throws IOException;
  public void start(Map<String, String> env) throws IOException;

  public String getCommand();

  public boolean isAlive();

  public void cleanup();

  public Collection<String> getAllOutput();

  public Collection<String> getAllError();

  public Collection<String> getOutput();

  public Collection<String> getError();

  public void kill(long timeoutBeforeForceKill) ;

  public int exitValue();

  public boolean waitFor(long timeout, TimeUnit unit);

}