/*
* Copyright (c) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 David Berkman
*
* This file is part of the SmallMind Code Project.
*
* The SmallMind Code Project is free software, you can redistribute
* it and/or modify it under either, at your discretion...
*
* 1) The terms of GNU Affero General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at
* your option) any later version.
*
* ...or...
*
* 2) The terms of the Apache License, Version 2.0.
*
* The SmallMind Code Project is distributed in the hope that it will
* be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License or Apache License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* and the Apache License along with the SmallMind Code Project. If not, see
* <http://www.gnu.org/licenses/> or <http://www.apache.org/licenses/LICENSE-2.0>.
*
* Additional permission under the GNU Affero GPL version 3 section 7
* ------------------------------------------------------------------
* If you modify this Program, or any covered work, by linking or
* combining it with other code, such other code is not for that reason
* alone subject to any of the requirements of the GNU Affero GPL
* version 3.
*/
package org.smallmind.phalanx.wire.mock;
import java.util.ArrayList;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.atomic.AtomicBoolean;
import org.smallmind.scribe.pen.LoggerManager;
public class MockTopic {
private final AtomicBoolean closed = new AtomicBoolean(false);
private final QueueWorker worker;
private final ConcurrentLinkedQueue<MockMessage> messageQueue = new ConcurrentLinkedQueue<>();
private final ArrayList<MockMessageListener> listenerList = new ArrayList<>();
public MockTopic () {
Thread thread = new Thread(worker = new QueueWorker());
thread.setDaemon(true);
thread.start();
}
public void addListener (MockMessageListener listener) {
synchronized (listenerList) {
listenerList.add(listener);
}
}
public void removeListener (MockMessageListener listener) {
synchronized (listenerList) {
listenerList.remove(listener);
}
}
public void send (MockMessage message) {
messageQueue.add(message);
}
@Override
protected void finalize () {
worker.close();
}
private class QueueWorker implements Runnable {
public void close () {
closed.set(true);
}
@Override
public void run () {
while (!closed.get()) {
MockMessage message;
if ((message = messageQueue.poll()) != null) {
synchronized (listenerList) {
for (MockMessageListener listener : listenerList) {
if (listener.match(message.getProperties())) {
listener.handle(message);
}
}
}
} else {
try {
Thread.sleep(500);
} catch (InterruptedException interruptedException) {
LoggerManager.getLogger(MockQueue.class).error(interruptedException);
}
}
}
}
}
}