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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.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import org.apache.log4j.Logger;
public final class Piper extends Thread
{
private static final Logger LOGGER = Logger.getLogger(Piper.class);
private final BufferedReader _in;
private final PrintStream _out;
private final String _ready;
private final CountDownLatch _latch;
private final String _stopped;
private final String _prefix;
private volatile boolean _seenReady;
private volatile String _stopLine;
public Piper(InputStream in, PrintStream out, String ready, String stopped)
{
this(in, out, ready, stopped, null);
}
public Piper(InputStream in, PrintStream out, String ready, String stopped, String prefix)
{
_in = new BufferedReader(new InputStreamReader(in));
_out = out;
_ready = ready;
_stopped = stopped;
_seenReady = false;
_prefix = prefix;
if (this._ready != null && !this._ready.equals(""))
{
this._latch = new CountDownLatch(1);
}
else
{
this._latch = null;
}
}
public boolean await(long timeout, TimeUnit unit) throws InterruptedException
{
if (_latch == null)
{
return true;
}
else
{
_latch.await(timeout, unit);
return _seenReady;
}
}
public void run()
{
try
{
String line;
while ((line = _in.readLine()) != null)
{
if (_prefix != null)
{
line = _prefix + line;
}
_out.println(line);
if (_latch != null && line.contains(_ready))
{
_seenReady = true;
_latch.countDown();
}
if (!_seenReady && line.contains(_stopped))
{
_stopLine = line;
}
}
}
catch (IOException e)
{
LOGGER.warn(e.getMessage() + " : Broker stream from unexpectedly closed; last log lines written by Broker may be lost.");
}
finally
{
if (_latch != null)
{
_latch.countDown();
}
}
}
public String getStopLine()
{
return _stopLine;
}
String getReady()
{
return _ready;
}
}
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