/*
* 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.jms;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import org.smallmind.instrument.InstrumentationManager;
import org.smallmind.instrument.MetricProperty;
import org.smallmind.phalanx.wire.MetricInteraction;
import org.smallmind.phalanx.wire.WireProperty;
import org.smallmind.scribe.pen.LoggerManager;
public class RequestListener implements SessionEmployer, MessageListener {
private final AtomicBoolean closed = new AtomicBoolean(false);
private final JmsResponseTransport jmsResponseTransport;
private final ConnectionManager requestConnectionManager;
private final Destination requestDestination;
private final String selector;
public RequestListener (JmsResponseTransport jmsResponseTransport, ConnectionManager requestConnectionManager, Destination requestDestination, String serviceGroup, String instanceId)
throws JMSException {
this.jmsResponseTransport = jmsResponseTransport;
this.requestConnectionManager = requestConnectionManager;
this.requestDestination = requestDestination;
selector = (instanceId == null) ? WireProperty.SERVICE_GROUP.getKey() + "='" + serviceGroup + "'" : WireProperty.SERVICE_GROUP.getKey() + "='" + serviceGroup + "' AND " + WireProperty.INSTANCE_ID.getKey() + "='" + instanceId + "'";
requestConnectionManager.createConsumer(this);
}
@Override
public Destination getDestination () {
return requestDestination;
}
@Override
public String getMessageSelector () {
return selector;
}
public void play ()
throws JMSException {
requestConnectionManager.start();
}
public void pause ()
throws JMSException {
requestConnectionManager.stop();
}
public void close ()
throws JMSException {
if (closed.compareAndSet(false, true)) {
requestConnectionManager.stop();
requestConnectionManager.close();
}
}
@Override
public void onMessage (final Message message) {
try {
long timeInQueue = System.currentTimeMillis() - message.getLongProperty(WireProperty.CLOCK.getKey());
LoggerManager.getLogger(QueueOperator.class).debug("request message received(%s) in %d ms...", message.getJMSMessageID(), timeInQueue);
InstrumentationManager.instrumentWithChronometer(jmsResponseTransport, (timeInQueue >= 0) ? timeInQueue : 0, TimeUnit.MILLISECONDS, new MetricProperty("queue", MetricInteraction.REQUEST_TRANSIT_TIME.getDisplay()));
jmsResponseTransport.execute(message);
} catch (Exception exception) {
LoggerManager.getLogger(RequestListener.class).error(exception);
}
}
}