/*
* Copyright (c) 2003-2009, KNOPFLERFISH project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* - Neither the name of the KNOPFLERFISH project nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.knopflerfish.service.um.useradmin.impl;
import java.util.Dictionary;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Vector;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Constants;
import org.osgi.framework.ServiceReference;
import org.osgi.service.event.Event;
import org.osgi.service.event.EventAdmin;
import org.osgi.service.event.EventConstants;
import org.osgi.service.useradmin.UserAdminEvent;
import org.osgi.service.useradmin.UserAdminListener;
import org.osgi.util.tracker.ServiceTracker;
import org.knopflerfish.service.log.LogRef;
/**
* An object that sends a given UserAdminEvent to all registered listeners.
*
* @author Gunnar Ekolin
* @version
*/
final public class SendUserAdminEventJob implements Runnable {
LogRef log;
BundleContext bc;
ServiceTracker eventAdminTracker;
UserAdminEvent event;
Vector listeners;
SendUserAdminEventJob( BundleContext bc,
ServiceTracker eventAdminTracker,
UserAdminEvent event,
Vector listeners )
{
this.bc = bc;
this.eventAdminTracker = eventAdminTracker;
this.event = event;
// Call only listeners that are present when the event happened.
this.listeners = (Vector) listeners.clone();
this.log = new LogRef(bc);
}
/** The base of the event admin path for user admin events. **/
static final String basePath = "org/osgi/service/useradmin/UserAdmin/";
/**
* Derive event admin path for a user admin event.
*/
String getEventAdminPath() {
String evtType = "?";
switch (event.getType()) {
case UserAdminEvent.ROLE_CREATED:
evtType = "ROLE_CREATED";
break;
case UserAdminEvent.ROLE_CHANGED:
evtType = "ROLE_CHANGED";
break;
case UserAdminEvent.ROLE_REMOVED:
evtType = "ROLE_REMOVED";
break;
}
return basePath + evtType;
}
/**
* Add key value pair to dictionary if value is non-null.
*
* @param dict The hashtable to add the key value pair to.
* @param key The key to put.
* @param val The value to put.
*/
void put( Hashtable dict, String key, Object val)
{
if (null!=val)
dict.put( key, val );
}
/**
* Creates an event admin event for the user admin event object in
* this job.
*/
Event getEvent() {
String path = getEventAdminPath();
Hashtable dict = new Hashtable();
put( dict, EventConstants.EVENT_TOPIC, path );
put( dict, EventConstants.EVENT, event );
put( dict, EventConstants.TIMESTAMP,
new Long(System.currentTimeMillis()) );
put( dict, "role", event.getRole() );
put( dict, "role.name", event.getRole().getName() );
put( dict, "role.type", new Integer(event.getRole().getType()) );
put( dict, EventConstants.SERVICE, event.getServiceReference() );
put( dict, EventConstants.SERVICE_ID,
event.getServiceReference().getProperty(Constants.SERVICE_ID) );
put( dict, EventConstants.SERVICE_OBJECTCLASS,
event.getServiceReference().getProperty(Constants.OBJECTCLASS) );
put( dict, EventConstants.SERVICE_PID,
event.getServiceReference().getProperty(Constants.SERVICE_PID) );
return new Event( path, (Dictionary) dict );
}
public void run()
{
EventAdmin ea = (EventAdmin) eventAdminTracker.getService();
if (null!=ea) {
ea.postEvent( getEvent() );
}
for (Enumeration en = listeners.elements(); en.hasMoreElements();) {
ServiceReference sr = (ServiceReference) en.nextElement();
UserAdminListener ual = (UserAdminListener) bc.getService(sr);
if (ual != null) {
try {
ual.roleChanged(event);
} catch (Throwable t) {
log.error("[UserAdmin] Error while sending roleChanged event to"+sr,
t);
}
}
bc.ungetService(sr);
}
}
}