Activator.java

/****************************************************************************
 * Copyright (c) 2008 Composent, Inc. and others.
 * 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:
 *    Composent, Inc. - initial API and implementation
 *****************************************************************************/

package org.eclipse.ecf.internal.examples.updatesite;

import org.eclipse.ecf.discovery.IDiscoveryAdvertiser;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.service.http.HttpService;
import org.osgi.util.tracker.ServiceTracker;

public class Activator implements BundleActivator {

	private BundleContext context;

	private ServiceTracker httpServiceTracker;
	private ServiceTracker discoveryTracker;

	private static Activator plugin;

	public static Activator getDefault() {
		return plugin;
	}

	/*
	 * (non-Javadoc)
	 * @see org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext)
	 */
	public void start(BundleContext ctxt) throws Exception {
		context = ctxt;
		plugin = this;
	}

	/*
	 * (non-Javadoc)
	 * @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext)
	 */
	public void stop(BundleContext ctxt) throws Exception {
		if (httpServiceTracker != null) {
			httpServiceTracker.close();
			httpServiceTracker = null;
		}
		if (discoveryTracker != null) {
			discoveryTracker.close();
			discoveryTracker = null;
		}
		ctxt = null;
	}

	public HttpService waitForHttpService(int waittime) throws InterruptedException {
		if (httpServiceTracker == null) {
			httpServiceTracker = new ServiceTracker(context, HttpService.class.getName(), null);
			httpServiceTracker.open();
		}
		return (HttpService) httpServiceTracker.waitForService(waittime);
	}

	public IDiscoveryAdvertiser waitForDiscoveryService(int waittime) throws InterruptedException {
		if (discoveryTracker == null) {
			discoveryTracker = new ServiceTracker(context, IDiscoveryAdvertiser.class.getName(), null);
			discoveryTracker.open();
		}
		return (IDiscoveryAdvertiser) discoveryTracker.waitForService(waittime);
	}

}