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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.osgi.remoteserviceadmin.impl;
import static org.apache.tuscany.sca.osgi.remoteserviceadmin.impl.EndpointHelper.createEndpointDescription;
import static org.apache.tuscany.sca.osgi.remoteserviceadmin.impl.OSGiHelper.createOSGiProperty;
import static org.apache.tuscany.sca.osgi.remoteserviceadmin.impl.OSGiHelper.getFrameworkUUID;
import static org.apache.tuscany.sca.osgi.remoteserviceadmin.impl.OSGiHelper.getOSGiProperties;
import static org.osgi.framework.Constants.SERVICE_ID;
import static org.osgi.service.remoteserviceadmin.RemoteConstants.ENDPOINT_FRAMEWORK_UUID;
import static org.osgi.service.remoteserviceadmin.RemoteConstants.ENDPOINT_SERVICE_ID;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.tuscany.sca.assembly.Binding;
import org.apache.tuscany.sca.assembly.Component;
import org.apache.tuscany.sca.assembly.ComponentService;
import org.apache.tuscany.sca.assembly.Endpoint;
import org.apache.tuscany.sca.contribution.Contribution;
import org.apache.tuscany.sca.implementation.osgi.OSGiProperty;
import org.apache.tuscany.sca.implementation.osgi.SCAConfig;
import org.apache.tuscany.sca.implementation.osgi.ServiceDescriptionsFactory;
import org.apache.tuscany.sca.node.configuration.NodeConfiguration;
import org.apache.tuscany.sca.node.impl.NodeImpl;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceReference;
import org.osgi.service.remoteserviceadmin.EndpointDescription;
import org.osgi.service.remoteserviceadmin.ExportRegistration;
import org.osgi.util.tracker.ServiceTrackerCustomizer;
/**
* Watching and exporting OSGi services
*/
public class OSGiServiceExporter extends AbstractOSGiServiceHandler implements ServiceTrackerCustomizer {
private final static Logger logger = Logger.getLogger(OSGiServiceExporter.class.getName());
private Map<EndpointDescription, ExportReferenceImpl> exportReferences =
new ConcurrentHashMap<EndpointDescription, ExportReferenceImpl>();
/**
* @param context
* @param clazz
* @param customizer
*/
public OSGiServiceExporter(BundleContext context) {
super(context);
}
public void start() {
init();
}
public void stop() {
exportReferences.clear();
super.stop();
}
public Object addingService(ServiceReference reference) {
return exportService(reference, null);
}
public List<ExportRegistration> exportService(ServiceReference reference, Map<String, Object> properties) {
// FIXME: [rfeng] We need to check if a corresponding endpoint has been exported
try {
Contribution contribution = introspector.introspect(reference, properties);
if (contribution != null) {
NodeConfiguration configuration = nodeFactory.createNodeConfiguration();
if (domainRegistry != null) {
configuration.setDomainRegistryURI(domainRegistry);
}
if (domainURI != null) {
configuration.setDomainURI(domainURI);
}
configuration.setURI(contribution.getURI());
// configuration.getExtensions().add(reference.getBundle());
Component component = contribution.getDeployables().get(0).getComponents().get(0);
ComponentService service = component.getServices().get(0);
service.getExtensions().addAll(getOSGiProperties(registry, reference));
service.getExtensions().add(createOSGiProperty(registry,
ENDPOINT_FRAMEWORK_UUID,
getFrameworkUUID(reference.getBundle()
.getBundleContext())));
service.getExtensions().add(createOSGiProperty(registry, ENDPOINT_SERVICE_ID, reference
.getProperty(SERVICE_ID)));
// create the org.osgi.sca.config.xml property
service.getExtensions().add(createSCAConfigXMLProperty(reference, properties, service));
// FIXME: Configure the domain and node URI
NodeImpl node = new NodeImpl(nodeFactory, configuration, Collections.singletonList(contribution));
node.start();
List<ExportRegistration> exportedServices = new ArrayList<ExportRegistration>();
for (Endpoint endpoint : service.getEndpoints()) {
EndpointDescription endpointDescription = createEndpointDescription(context, endpoint);
synchronized (this) {
ExportReferenceImpl exportReference = exportReferences.get(endpointDescription);
if (exportReference == null) {
exportReference = new ExportReferenceImpl(node, reference, endpointDescription);
}
ExportRegistration exportRegistration = exportReference.register();
exportedServices.add(exportRegistration);
}
}
return exportedServices;
} else {
return null;
}
} catch (Exception e) {
logger.log(Level.SEVERE, e.getMessage(), e);
ExportRegistration exportRegistration = new ExportRegistrationImpl(null, e);
return Collections.singletonList(exportRegistration);
}
}
public void modifiedService(ServiceReference reference, Object service) {
removedService(reference, service);
exportService(reference, null);
}
public void removedService(ServiceReference reference, Object service) {
List<ExportRegistration> exportedServices = (List<ExportRegistration>)service;
for (ExportRegistration exportRegistration : exportedServices) {
exportRegistration.close();
}
}
private OSGiProperty createSCAConfigXMLProperty(ServiceReference reference, Map<String, Object> props, ComponentService service){
// create the <sca-config> element
String scaConfigXMLString = introspector.instrospectSCAConfig(reference, props, service);
// wrap the <sca-config> element in an <xml> element
String scaConfigXMLStringWithoutXMLHeader = scaConfigXMLString.substring(scaConfigXMLString.indexOf("><") + 1);
scaConfigXMLString = "<xml>" + scaConfigXMLStringWithoutXMLHeader + "</xml>";
// create and return the OSGI property
return createOSGiProperty(registry, "org.osgi.sca.config.xml", scaConfigXMLString);
}
}
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