Activator.java

/*******************************************************************************
 * Copyright (c) 2007, 2014 compeople AG 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:
 *    compeople AG - initial API and implementation
 *******************************************************************************/
package org.eclipse.riena.internal.communication.publisher.hessian;

import java.util.Hashtable;

import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceRegistration;
import org.osgi.service.log.LogService;

import org.eclipse.equinox.log.Logger;

import org.eclipse.riena.communication.core.publisher.IServicePublisher;
import org.eclipse.riena.core.Log4r;
import org.eclipse.riena.core.RienaActivator;
import org.eclipse.riena.core.RienaConstants;

/**
 * The activator class controls the plug-in life cycle
 */
public class Activator extends RienaActivator {
	private ServiceRegistration publisherReg;
	private HessianRemoteServicePublisher publisher;

	private Logger logger;

	// The shared instance
	private static Activator plugin;

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.core.runtime.Plugins#start(org.osgi.framework.BundleContext)
	 */
	@Override
	public void start(final BundleContext context) throws Exception {
		super.start(context);
		Activator.plugin = this;

		logger = Log4r.getLogger(Activator.class);
		logger.log(LogService.LOG_INFO, "start hessian support on server"); //$NON-NLS-1$

		publisher = new HessianRemoteServicePublisher();
		final Hashtable<String, Object> properties = RienaConstants.newDefaultServiceProperties();
		properties.put(IServicePublisher.PROP_PROTOCOL, publisher.getProtocol());
		publisherReg = context.registerService(IServicePublisher.class.getName(), publisher, properties);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.core.runtime.Plugin#stop(org.osgi.framework.BundleContext)
	 */
	@Override
	public void stop(final BundleContext context) throws Exception {
		publisherReg.unregister();
		publisherReg = null;
		publisher = null;

		logger.log(LogService.LOG_INFO, "stop hessian support on server"); //$NON-NLS-1$
		Activator.plugin = null;
		super.stop(context);
	}

	/**
	 * Get the plugin instance.
	 * 
	 * @return
	 */
	public static Activator getDefault() {
		return plugin;
	}

	/**
	 * 
	 * @return the publisher or null if the bundle is stopped
	 */
	public HessianRemoteServicePublisher getPublisher() {
		return publisher;
	}
}