/*
* 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 java.io.StringReader;
import java.net.URL;
import java.util.Dictionary;
import java.util.Hashtable;
import java.util.logging.Level;
import org.apache.tuscany.sca.core.ExtensionPointRegistry;
import org.apache.tuscany.sca.core.FactoryExtensionPoint;
import org.apache.tuscany.sca.extensibility.equinox.OSGiExtensionPointRegistry;
import org.apache.tuscany.sca.node.configuration.NodeConfiguration;
import org.apache.tuscany.sca.node.configuration.NodeConfigurationFactory;
import org.apache.tuscany.sca.node.impl.NodeFactoryImpl;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;
import org.osgi.framework.FrameworkUtil;
import org.osgi.framework.ServiceRegistration;
/**
* The OSGi based NodeFactory
*
* @version $Rev: 888534 $ $Date: 2009-12-08 19:29:52 +0000 (Tue, 08 Dec 2009) $
*/
public class OSGiNodeFactoryImpl extends NodeFactoryImpl {
private ServiceRegistration registration;
private BundleContext bundleContext;
public OSGiNodeFactoryImpl() {
super();
Bundle bundle = FrameworkUtil.getBundle(OSGiNodeFactoryImpl.class);
if (bundle != null) {
this.bundleContext = bundle.getBundleContext();
autoDestroy = false;
setNodeFactory(this);
} else {
throw new IllegalStateException(OSGiNodeFactoryImpl.class + " is not loaded by OSGi");
}
}
/**
* Constructs a new Node controller
*/
public OSGiNodeFactoryImpl(BundleContext bundleContext) {
super();
this.bundleContext = bundleContext;
autoDestroy = false;
setNodeFactory(this);
}
protected NodeConfiguration getConfiguration(Bundle bundle, String compositeContent) {
init();
// Create a node configuration
FactoryExtensionPoint modelFactories = registry.getExtensionPoint(FactoryExtensionPoint.class);
NodeConfigurationFactory configurationFactory = modelFactories.getFactory(NodeConfigurationFactory.class);
NodeConfiguration configuration = configurationFactory.createNodeConfiguration();
URL location = bundle.getEntry("/");
String uri = bundle.getSymbolicName();
configuration.setURI(uri).addContribution(uri, location);
if (compositeContent != null) {
configuration.addDeploymentComposite(uri, new StringReader(compositeContent));
} else {
String compositeURI = (String)bundle.getHeaders().get("SCA-Composite");
if (compositeURI == null) {
compositeURI = "OSGI-INF/sca/bundle.composite";
}
if (compositeURI != null) {
configuration.addDeploymentComposite(uri, compositeURI);
}
}
// Set the bundle
// configuration.getExtensions().add(bundle);
return configuration;
}
public synchronized void init() {
if (!inited) {
// Register the ExtensionPointRegistry as an OSGi service
Dictionary<Object, Object> props = new Hashtable<Object, Object>();
registry = createExtensionPointRegistry();
registry.start();
registration =
bundleContext.registerService(ExtensionPointRegistry.class.getName(), registry, props);
// Call super.init after the extension point registry is registered
super.init();
}
}
public synchronized void destroy() {
if (inited) {
if (registration != null) {
try {
registration.unregister();
} catch (IllegalStateException e) {
// The service has been unregistered, ignore it
}
registration = null;
}
super.destroy();
}
}
@Override
protected Object getNodeKey(NodeConfiguration configuration) {
// each bundle might have more than one nodes started
return super.getNodeKey(configuration);
}
@Override
protected ExtensionPointRegistry createExtensionPointRegistry() {
return new OSGiExtensionPointRegistry(bundleContext);
}
@Override
protected boolean isSchemaValidationEnabled() {
return logger.isLoggable(Level.FINE);
}
}