| /* |
| * |
| * 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; |
| } |
| } |