/*******************************************************************************
* This file is part of OpenNMS(R).
*
* Copyright (C) 2006-2011 The OpenNMS Group, Inc.
* OpenNMS(R) is Copyright (C) 1999-2011 The OpenNMS Group, Inc.
*
* OpenNMS(R) is a registered trademark of The OpenNMS Group, Inc.
*
* OpenNMS(R) is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundation, either version 3 of the License,
* or (at your option) any later version.
*
* OpenNMS(R) 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with OpenNMS(R). If not, see:
* http://www.gnu.org/licenses/
*
* For more information contact:
* OpenNMS(R) Licensing <license@opennms.org>
* http://www.opennms.org/
* http://www.opennms.com/
*******************************************************************************/
package org.opennms.netmgt.actiond;
import java.util.Enumeration;
import org.opennms.core.queue.FifoQueue;
import org.opennms.core.queue.FifoQueueException;
import org.opennms.core.utils.ThreadCategory;
import org.opennms.netmgt.eventd.EventIpcManagerFactory;
import org.opennms.netmgt.model.events.EventListener;
import org.opennms.netmgt.xml.event.Autoaction;
import org.opennms.netmgt.xml.event.Event;
/**
*
* @author <a href="mailto:weave@oculan.com">Brian Weaver </a>
* @author <a href="http://www.opennms.org/">OpenNMS </a>
*/
final class BroadcastEventProcessor implements EventListener {
/**
* The location where executable events are enqueued to be executed.
*/
private final FifoQueue<String> m_execQ;
/**
* This constructor subscribes to eventd for all events
*
* @param execQ
* The queue where executable events are stored.
*
*/
BroadcastEventProcessor(FifoQueue<String> execQ) {
// set up the exectuable queue first
//
m_execQ = execQ;
// subscribe for all events
EventIpcManagerFactory.init();
EventIpcManagerFactory.getIpcManager().addEventListener(this);
}
/**
* Unsubscribe from eventd
*/
public synchronized void close() {
EventIpcManagerFactory.getIpcManager().removeEventListener(this);
}
/**
* {@inheritDoc}
*
* This method is invoked by the EventIpcManager when a new event is
* available for processing. Each event's autoactions and trouble tickets
* are queued to be run
*/
public void onEvent(Event event) {
ThreadCategory log = ThreadCategory.getInstance(BroadcastEventProcessor.class);
if (event == null) {
return;
}
// Handle autoactions
//
Enumeration<Autoaction> walker = event.enumerateAutoaction();
while (walker.hasMoreElements()) {
try {
Autoaction aact = walker.nextElement();
if (aact.getState().equalsIgnoreCase("on")) {
m_execQ.add(aact.getContent()); // java.lang.String
}
if (log.isDebugEnabled()) {
log.debug("Added event \'" + event.getUei() + "\' to execute autoaction \'" + aact.getContent() + "\'");
}
} catch (FifoQueueException ex) {
log.error("Failed to add event to execution queue", ex);
break;
} catch (InterruptedException ex) {
log.error("Failed to add event to execution queue", ex);
break;
}
}
// Handle trouble tickets
//
if (event.getTticket() != null && event.getTticket().getState().equalsIgnoreCase("on")) {
try {
m_execQ.add(event.getTticket().getContent()); // java.lang.String
if (log.isDebugEnabled())
log.debug("Added event \'" + event.getUei() + "\' to execute tticket \'" + event.getTticket().getContent() + "\'");
} catch (FifoQueueException ex) {
log.error("Failed to add event to execution queue", ex);
} catch (InterruptedException ex) {
log.error("Failed to add event to execution queue", ex);
}
}
} // end onMessage()
/**
* Return an id for this event listener
*
* @return a {@link java.lang.String} object.
*/
public String getName() {
return "Actiond:BroadcastEventProcessor";
}
} // end class