Create 2.0 M4 release branch

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@830484 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 147 insertions, 0 deletions

diff --git a/branches/sca-java-2.0-M4/modules/node-impl-osgi/src/main/java/org/apache/tuscany/sca/osgi/remoteserviceadmin/impl/OSGiServiceExporter.java b/branches/sca-java-2.0-M4/modules/node-impl-osgi/src/main/java/org/apache/tuscany/sca/osgi/remoteserviceadmin/impl/OSGiServiceExporter.java
new file mode 100644
index 0000000000..d6cbe1a44b
--- /dev/null
+++ b/branches/sca-java-2.0-M4/modules/node-impl-osgi/src/main/java/org/apache/tuscany/sca/osgi/remoteserviceadmin/impl/OSGiServiceExporter.java
@@ -0,0 +1,147 @@
+/*
+ * 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 java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+
+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.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.LifeCycleListener;
+import org.apache.tuscany.sca.node.NodeFactory;
+import org.apache.tuscany.sca.node.configuration.NodeConfiguration;
+import org.apache.tuscany.sca.node.impl.NodeFactoryImpl;
+import org.apache.tuscany.sca.node.impl.NodeImpl;
+import org.apache.tuscany.sca.osgi.remoteserviceadmin.EndpointDescription;
+import org.apache.tuscany.sca.osgi.remoteserviceadmin.ExportRegistration;
+import org.apache.tuscany.sca.osgi.service.discovery.impl.LocalDiscoveryService;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.ServiceReference;
+import org.osgi.util.tracker.ServiceTracker;
+import org.osgi.util.tracker.ServiceTrackerCustomizer;
+
+/**
+ * Watching and exporting OSGi services 
+ */
+public class OSGiServiceExporter implements ServiceTrackerCustomizer, LifeCycleListener {
+    private ExtensionPointRegistry registry;
+    private BundleContext context;
+    private NodeFactoryImpl nodeFactory;
+    private EndpointIntrospector introspector;
+    private ServiceTracker discoveryTracker;
+
+    /**
+     * @param context
+     * @param clazz
+     * @param customizer
+     */
+    public OSGiServiceExporter(BundleContext context) {
+        this.context = context;
+    }
+
+    private synchronized void init() {
+        if (nodeFactory == null) {
+            this.nodeFactory = (NodeFactoryImpl)NodeFactory.newInstance();
+            this.nodeFactory.init();
+            this.discoveryTracker = LocalDiscoveryService.getTracker(context);
+            discoveryTracker.open();
+            this.introspector = new EndpointIntrospector(context, getExtensionPointRegistry(), discoveryTracker);
+        }
+    }
+
+    public void start() {
+        init();
+    }
+
+    public void stop() {
+        discoveryTracker.close();
+        discoveryTracker = null;
+        introspector = null;
+        nodeFactory = null;
+        registry = null;
+        context = null;
+    }
+
+    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();
+                configuration.setURI(contribution.getURI());
+                configuration.getExtensions().add(reference.getBundle());
+                // FIXME: Configure the domain and node URI
+                NodeImpl node = new NodeImpl(nodeFactory, configuration, Collections.singletonList(contribution));
+                node.start();
+                List<ExportRegistration> exportedServices = new ArrayList<ExportRegistration>();
+                Component component = contribution.getDeployables().get(0).getComponents().get(0);
+                ComponentService service = component.getServices().get(0);
+                for (Endpoint endpoint : service.getEndpoints()) {
+                    EndpointDescription endpointDescription = createEndpointDescription(context, endpoint);
+                    ExportRegistration exportRegistration =
+                        new ExportRegistrationImpl(node, reference, endpointDescription);
+                    exportedServices.add(exportRegistration);
+                }
+                return exportedServices;
+            } else {
+                return null;
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    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();
+        }
+    }
+
+    protected ExtensionPointRegistry getExtensionPointRegistry() {
+        if (registry == null) {
+            ServiceTracker tracker = new ServiceTracker(context, ExtensionPointRegistry.class.getName(), null);
+            tracker.open();
+            // tracker.waitForService(1000);
+            registry = (ExtensionPointRegistry)tracker.getService();
+            tracker.close();
+        }
+        return registry;
+    }
+
+}