/*
* Copyright 2012 The Solmix Project
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.gnu.org/licenses/
* or see the FSF site: http://www.fsf.org.
*/
package org.solmix.eventservice.tasks;
import org.osgi.framework.ServiceReference;
import org.osgi.service.event.Event;
import org.osgi.service.event.EventHandler;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.solmix.eventservice.EventTask;
/**
*
* @author solmix.f@gmail.com
* @version 110035 2011-10-1
*/
public class EventTaskImpl implements EventTask
{
private static final Logger logger = LoggerFactory.getLogger(EventTaskImpl.class);
// The service reference of the handler
private final ServiceReference<EventHandler> eventHandlerRef;
// The event to deliver to the handler
private final Event event;
private final EventTaskManagerImpl taskManager;
EventTaskImpl(EventTaskManagerImpl manager, Event event, ServiceReference <EventHandler> ref)
{
eventHandlerRef = ref;
this.event = event;
taskManager = manager;
}
@Override
public void execute() {
// Get the service object
final EventHandler handler = taskManager.getEventHandler(eventHandlerRef);
try {
handler.handleEvent(event);
} catch (final Throwable e) {
// The spec says that we must catch exceptions and log them:
logger.error("Exception during event dispatch [" + event + " | " + eventHandlerRef + " | Bundle(" + eventHandlerRef.getBundle() + ")]", e);
} finally {
taskManager.ungetEventHandler(handler, eventHandlerRef);
}
}
/**
* {@inheritDoc}
*
* @see org.solmix.eventservice.EventTask#blackListHandler()
*/
@Override
public void blackListHandler() {
taskManager.addToBlackList(eventHandlerRef);
}
/**
* {@inheritDoc}
*
* @see org.solmix.eventservice.EventTask#getHandlerClassName()
*/
@Override
public String getHandlerClassName() {
final EventHandler handler = taskManager.getEventHandler(eventHandlerRef);
try {
return handler.getClass().getName();
} finally {
taskManager.ungetEventHandler(handler, eventHandlerRef);
}
}
}