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/*
*
* 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 org.apache.qpid.test.utils;
import java.io.IOException;
import org.apache.log4j.Logger;
public class SpawnedBrokerHolder implements BrokerHolder
{
private static final Logger LOGGER = Logger.getLogger(SpawnedBrokerHolder.class);
private final boolean _isWindows = String.valueOf(System.getProperty("os.name")).toLowerCase().contains("windows");
private final Process _process;
private final Integer _pid;
private final String _workingDirectory;
public SpawnedBrokerHolder(final Process process, final String workingDirectory)
{
if(process == null)
{
throw new IllegalArgumentException("Process must not be null");
}
_process = process;
_pid = retrieveUnixPidIfPossible();
_workingDirectory = workingDirectory;
}
@Override
public String getWorkingDirectory()
{
return _workingDirectory;
}
public void shutdown()
{
LOGGER.info("Destroying broker process");
_process.destroy();
reapChildProcess();
}
@Override
public void kill()
{
if (_pid == null)
{
LOGGER.info("Destroying broker process");
_process.destroy();
}
else
{
LOGGER.info("Killing broker process with PID " + _pid);
sendSigkillForImmediateShutdown(_pid);
}
reapChildProcess();
}
private void sendSigkillForImmediateShutdown(Integer pid)
{
boolean killSuccessful = false;
try
{
final Process killProcess = Runtime.getRuntime().exec("kill -KILL " + pid);
killProcess.waitFor();
killSuccessful = killProcess.exitValue() == 0;
}
catch (IOException e)
{
LOGGER.error("Error whilst killing process " + _pid, e);
}
catch (InterruptedException e)
{
Thread.currentThread().interrupt();
}
finally
{
if (!killSuccessful)
{
_process.destroy();
}
}
}
private Integer retrieveUnixPidIfPossible()
{
if(!_isWindows)
{
try
{
Integer pid = ReflectionUtils.getDeclaredField(_process, "pid");
LOGGER.info("PID " + pid);
return pid;
}
catch (ReflectionUtilsException e)
{
LOGGER.warn("Could not get pid for process, Broker process shutdown will be ungraceful");
}
}
return null;
}
private void reapChildProcess()
{
try
{
_process.waitFor();
LOGGER.info("broker exited: " + _process.exitValue());
}
catch (InterruptedException e)
{
LOGGER.error("Interrupted whilst waiting for process shutdown");
Thread.currentThread().interrupt();
}
finally
{
try
{
_process.getInputStream().close();
_process.getErrorStream().close();
_process.getOutputStream().close();
}
catch (IOException e)
{
}
}
}
}
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