/*
 * Copyright 2005-2011 the original author or authors.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.wamblee.xmlrouter.bundle;

import java.util.Timer;
import java.util.TimerTask;

import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.util.tracker.ServiceTracker;
import org.wamblee.xmlrouter.subscribe.Destination;

public class XmlrouterActivator implements BundleActivator {

    private BundleContext context;
    private ServiceTracker destinations;
    private Timer timer;

    @Override
    public void start(BundleContext aContext) throws Exception {
        System.out.println("=== Starting bundle");
        context = aContext;
        destinations = new ServiceTracker(aContext,
            Destination.class.getName(), null);
        destinations.open();
        timer = new Timer();
        timer.schedule(new TimerTask() {

            @Override
            public void run() {
                Destination dest = (Destination) destinations.getService();
                System.out.println("  === timer expired");
                if (dest != null) {
                    System.out.println("   == calling");
                    dest.receive(null);
                }
            }
        }, 1000, 1000);
    }

    @Override
    public void stop(BundleContext aContext) throws Exception {
        System.out.println("=== Stopping bundle");
        timer.cancel();
        destinations.close();
    }

}