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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.tuscany.sca.node.osgi.impl;
import static org.apache.tuscany.sca.node.osgi.impl.NodeManager.isSCABundle;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.tuscany.sca.osgi.remoteserviceadmin.impl.RemoteServiceAdminImpl;
import org.apache.tuscany.sca.osgi.remoteserviceadmin.impl.TopologyManagerImpl;
import org.apache.tuscany.sca.osgi.service.discovery.impl.DiscoveryActivator;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.BundleEvent;
import org.osgi.framework.SynchronousBundleListener;
/**
* Bundle activator to receive the BundleContext
*/
public class NodeActivator implements BundleActivator, SynchronousBundleListener {
private final static Logger logger = Logger.getLogger(NodeActivator.class.getName());
private static BundleContext bundleContext;
private boolean inited;
private NodeManager manager;
private DiscoveryActivator discoveryActivator = new DiscoveryActivator();
private RemoteServiceAdminImpl remoteAdmin;
private TopologyManagerImpl controller;
private void init() {
synchronized (this) {
if (inited) {
return;
}
manager = new NodeManager(bundleContext);
manager.start();
bundleContext.addBundleListener(manager);
inited = true;
}
}
public void start(BundleContext context) throws Exception {
try {
bundleContext = context;
// FIXME: We should try to avoid aggressive initialization
init();
remoteAdmin = new RemoteServiceAdminImpl(context);
remoteAdmin.start();
discoveryActivator.start(context);
controller = new TopologyManagerImpl(context);
controller.start();
boolean found = false;
for (Bundle b : context.getBundles()) {
if (isSCABundle(b)) {
found = true;
break;
}
}
if (found) {
init();
} else {
context.addBundleListener(this);
}
} catch (Exception e) {
logger.log(Level.SEVERE, e.getMessage(), e);
throw e;
}
}
public void stop(BundleContext context) throws Exception {
if (inited) {
context.removeBundleListener(this);
controller.stop();
controller = null;
discoveryActivator.stop(context);
discoveryActivator = null;
remoteAdmin.stop();
remoteAdmin = null;
manager.stop();
bundleContext.removeBundleListener(manager);
manager = null;
bundleContext = null;
inited = false;
}
}
public static BundleContext getBundleContext() {
return bundleContext;
}
public void bundleChanged(BundleEvent event) {
if (event.getType() == BundleEvent.STARTING) {
if (isSCABundle(event.getBundle())) {
bundleContext.removeBundleListener(this);
init();
}
}
}
}
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