/*
* Copyright (c) 2003-2004, 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.bundle.jini;
import net.jini.core.entry.Entry;
import net.jini.core.lookup.ServiceID;
import net.jini.discovery.LookupDiscovery;
import net.jini.lease.LeaseRenewalManager;
import net.jini.lookup.JoinManager;
import org.osgi.framework.ServiceReference;
import org.osgi.service.jini.JiniDriver;
import java.io.IOException;
/**
* DOCUMENT ME!
*
* @author Nico Goeminne
*/
public class JiniExportedService implements net.jini.lookup.ServiceIDListener {
//Class LeaseRenewalManger for all leases for this exportedService
static LeaseRenewalManager leaseRenewalManager = new LeaseRenewalManager();
// Data related to the service
// OSGi
ServiceReference serviceReference = null;
Object service = null;
// Jini
ServiceID serviceID = null;
Entry[] entries = null;
//needed for the Jini JoinProtocl
LookupDiscovery lookupDiscovery = null;
JoinManager joinManager = null;
//Changing state needs to be synchroniced, canceling or updating are distinct
boolean isTerminating = false;
/**
* Creates a new JiniExportedService object.
*
* @param serviceReference DOCUMENT ME!
*
* @throws IOException DOCUMENT ME!
*/
public JiniExportedService(ServiceReference serviceReference)
throws IOException {
// get All serviceProperties and store them
init(serviceReference);
// Needed to spawn in order to find the right classes.
Thread curThread = Thread.currentThread();
ClassLoader oldClassLoader = curThread.getContextClassLoader();
curThread.setContextClassLoader(Activator.class.getClassLoader());
// creating a lookupDiscovery
lookupDiscovery = new LookupDiscovery(getLusExportGroups());
joinManager = new JoinManager(this.service, this.entries, this,
lookupDiscovery, leaseRenewalManager);
curThread.setContextClassLoader(oldClassLoader);
oldClassLoader = null;
curThread = null;
}
/**
* DOCUMENT ME!
*/
public void cancel() {
synchronized (this) {
if (isTerminating) {
return;
}
isTerminating = true;
joinManager.terminate();
lookupDiscovery.terminate();
}
}
/**
* DOCUMENT ME!
*
* @param serviceReference DOCUMENT ME!
*/
public void update(ServiceReference serviceReference) {
synchronized (this) {
if (isTerminating) {
return;
}
init(serviceReference);
try {
lookupDiscovery.setGroups(getLusExportGroups());
joinManager.setAttributes(entries);
} catch (IOException ex) {
Debug.printDebugInfo(10,
"Could not update " + serviceReference, ex);
}
}
}
/**
* DOCUMENT ME!
*
* @param serviceReference DOCUMENT ME!
*/
private void init(ServiceReference serviceReference) {
// OSGi
this.serviceReference = serviceReference;
this.service = Activator.bc.getService(serviceReference);
// Jini
this.serviceID = Util.getServiceID((String) serviceReference.getProperty(
JiniDriver.SERVICE_ID));
this.entries = (Entry[]) serviceReference.getProperty(JiniDriver.ENTRIES);
}
/**
* DOCUMENT ME!
*
* @return DOCUMENT ME!
*/
private String[] getLusExportGroups() {
String[] service_lusExportGroups = (String[]) serviceReference.getProperty(JiniDriver.LUS_EXPORT_GROUPS);
if (service_lusExportGroups != null) {
return service_lusExportGroups;
}
String system_String_lusExportGroups = System.getProperty(JiniDriver.CM_LUS_EXPORT_GROUPS);
if (system_String_lusExportGroups != null) {
return Util.splitwords(system_String_lusExportGroups);
}
String[] cm_lusExportGroups = Osgi2Jini.getCMLusExportGroups();
if (cm_lusExportGroups != null) {
return cm_lusExportGroups;
}
return null;
}
/**
* DOCUMENT ME!
*
* @param serviceID DOCUMENT ME!
*/
public void serviceIDNotify(ServiceID serviceID) {
this.serviceID = serviceID;
}
}