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/*******************************************************************************
* Copyright (c)2010 REMAIN B.V. The Netherlands. (http://www.remainsoftware.com).
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Wim Jongman - initial API and implementation
* Ahmed Aadel - initial API and implementation
*******************************************************************************/
package org.eclipse.ecf.provider.zookeeper;
import java.util.Dictionary;
import java.util.HashSet;
import java.util.Properties;
import java.util.Set;
import org.eclipse.ecf.discovery.IDiscoveryAdvertiser;
import org.eclipse.ecf.discovery.IDiscoveryLocator;
import org.eclipse.ecf.provider.zookeeper.core.ZooDiscoveryContainer;
import org.eclipse.ecf.provider.zookeeper.core.ZooDiscoveryContainerInstantiator;
import org.eclipse.ecf.provider.zookeeper.core.internal.BundleStoppingListener;
import org.eclipse.ecf.provider.zookeeper.util.Logger;
import org.eclipse.ecf.provider.zookeeper.util.PrettyPrinter;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceFactory;
import org.osgi.framework.ServiceReference;
import org.osgi.framework.ServiceRegistration;
import org.osgi.service.log.LogService;
import org.osgi.util.tracker.ServiceTracker;
public class DiscoveryActivator implements BundleActivator {
private static BundleContext context;
private ServiceRegistration discoveryRegistration;
private static Set<BundleStoppingListener> stopListeners = new HashSet<BundleStoppingListener>();
private ServiceTracker confTracker, logServiceTracker;
public void start(final BundleContext ctxt) {
context = ctxt;
final Properties props = new Properties();
props.put(IDiscoveryLocator.CONTAINER_NAME, ZooDiscoveryContainerInstantiator.NAME);
props.put(IDiscoveryAdvertiser.CONTAINER_NAME, ZooDiscoveryContainerInstantiator.NAME);
// register ourselves using a service factory
discoveryRegistration = ctxt.registerService(
new String[] { IDiscoveryLocator.class.getName(), IDiscoveryAdvertiser.class.getName() }, new ServiceFactory() {
private volatile ZooDiscoveryContainer zdc;
public Object getService(Bundle bundle, ServiceRegistration registration) {
if (zdc == null) {
zdc = ZooDiscoveryContainer.getSingleton();
zdc.setDiscoveryProperties(props);
}
return zdc;
}
public void ungetService(Bundle bundle, ServiceRegistration registration, Object service) {
}
}, (Dictionary) props);
// setup and open log service tracker
logServiceTracker = new ServiceTracker(ctxt, org.osgi.service.log.LogService.class.getName(), null) {
public Object addingService(ServiceReference reference) {
Logger.bindLogService((LogService) context.getService(reference));
return super.addingService(reference);
}
public void removedService(ServiceReference reference, Object service) {
Logger.unbindLogService((LogService) service);
super.removedService(reference, service);
}
};
logServiceTracker.open(true);
// Autostart by consuming our own service
if (ZooDiscoveryContainer.autoStart()) {
ctxt.getService(discoveryRegistration.getReference());
}
}
public void stop(BundleContext c) throws Exception {
dispose();
Logger.log(LogService.LOG_INFO, PrettyPrinter.prompt(PrettyPrinter.DEACTIVATED, null), null);
}
private void dispose() {
for (BundleStoppingListener l : stopListeners) {
l.bundleStopping();
}
stopListeners.clear();
ZooDiscoveryContainer.getSingleton().shutdown();
if (this.discoveryRegistration != null) {
this.discoveryRegistration.unregister();
}
if (this.confTracker != null) {
this.confTracker.close();
}
// Initiates an orderly shutdown of all our cached threads
ZooDiscoveryContainer.CACHED_THREAD_POOL.shutdown();
}
public static BundleContext getContext() {
return context;
}
public static void registerBundleStoppingListner(BundleStoppingListener l) {
stopListeners.add(l);
}
}
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