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/*******************************************************************************
* Copyright (c) 2005, 2009 IBM Corporation.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.equinox.internal.useradmin;
import java.util.Dictionary;
import java.util.Hashtable;
import org.osgi.framework.*;
import org.osgi.service.event.Event;
import org.osgi.service.event.EventAdmin;
import org.osgi.service.useradmin.Role;
import org.osgi.service.useradmin.UserAdminEvent;
import org.osgi.service.useradmin.UserAdminListener;
import org.osgi.util.tracker.ServiceTracker;
public class UserAdminEventAdapter implements UserAdminListener {
// constants for Event topic substring
public static final String TOPIC = "org/osgi/service/useradmin/UserAdmin"; //$NON-NLS-1$
public static final char TOPIC_SEPARATOR = '/';
public static final String EVENT = "event"; //$NON-NLS-1$
public static final String SERVICE = "service"; //$NON-NLS-1$
public static final String SERVICE_ID = "service.id"; //$NON-NLS-1$
public static final String SERVICE_OBJECTCLASS = "service.objectClass"; //$NON-NLS-1$
public static final String SERVICE_PID = "service.pid"; //$NON-NLS-1$
public static final String ROLE_CREATED = "ROLE_CREATED"; //$NON-NLS-1$
public static final String ROLE_CHANGED = "ROLE_CHANGED"; //$NON-NLS-1$
public static final String ROLE_REMOVED = "ROLE_REMOVED"; //$NON-NLS-1$
// constants for Event properties
public static final String ROLE = "role"; //$NON-NLS-1$
public static final String ROLE_NAME = "role.name"; //$NON-NLS-1$
public static final String ROLE_TYPE = "role.type"; //$NON-NLS-1$
private BundleContext context;
private ServiceRegistration userAdminRegistration;
private volatile ServiceTracker eventAdminTracker;
public UserAdminEventAdapter(BundleContext context) {
this.context = context;
}
public void start() throws Exception {
Hashtable<String, ?> props = new Hashtable<>(3);
userAdminRegistration = context.registerService(UserAdminListener.class, this, props);
eventAdminTracker = new ServiceTracker<>(context, EventAdmin.class, null);
eventAdminTracker.open();
}
public void stop() throws Exception {
ServiceTracker currentTracker = eventAdminTracker;
if (currentTracker != null) {
currentTracker.close();
eventAdminTracker = null;
}
if (userAdminRegistration != null) {
userAdminRegistration.unregister();
userAdminRegistration = null;
}
this.context = null;
}
@Override
public void roleChanged(UserAdminEvent event) {
ServiceTracker currentTracker = eventAdminTracker;
EventAdmin eventAdmin = currentTracker == null ? null : ((EventAdmin) currentTracker.getService());
if (eventAdmin != null) {
String typename = null;
switch (event.getType()) {
case UserAdminEvent.ROLE_CREATED :
typename = ROLE_CREATED;
break;
case UserAdminEvent.ROLE_CHANGED :
typename = ROLE_CHANGED;
break;
case UserAdminEvent.ROLE_REMOVED :
typename = ROLE_REMOVED;
break;
default :
return;
}
String topic = TOPIC + TOPIC_SEPARATOR + typename;
Hashtable<String, Object> properties = new Hashtable<>();
ServiceReference ref = event.getServiceReference();
if (ref == null) {
throw new RuntimeException("UserAdminEvent's getServiceReference() returns null."); //$NON-NLS-1$
}
putServiceReferenceProperties(properties, ref);
Role role = event.getRole();
if (role == null) {
throw new RuntimeException("UserAdminEvent's getRole() returns null."); //$NON-NLS-1$
}
if (role != null) {
properties.put(ROLE, role);
properties.put(ROLE_NAME, role.getName());
properties.put(ROLE_TYPE, Integer.valueOf(role.getType()));
}
properties.put(EVENT, event);
Event convertedEvent = new Event(topic, (Dictionary<String, ?>) properties);
eventAdmin.postEvent(convertedEvent);
}
}
public void putServiceReferenceProperties(Hashtable<String, Object> properties, ServiceReference ref) {
properties.put(SERVICE, ref);
properties.put(SERVICE_ID, ref.getProperty(org.osgi.framework.Constants.SERVICE_ID));
Object o = ref.getProperty(org.osgi.framework.Constants.SERVICE_PID);
if ((o != null) && (o instanceof String)) {
properties.put(SERVICE_PID, o);
}
Object o2 = ref.getProperty(org.osgi.framework.Constants.OBJECTCLASS);
if ((o2 != null) && (o2 instanceof String[])) {
properties.put(SERVICE_OBJECTCLASS, o2);
}
}
}
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