1 files changed, 227 insertions, 0 deletions
diff --git a/sandbox/sebastien/java/sca-node/modules/binding-jms/src/main/java/org/apache/tuscany/sca/binding/jms/provider/JMSBindingServiceBindingProvider.java b/sandbox/sebastien/java/sca-node/modules/binding-jms/src/main/java/org/apache/tuscany/sca/binding/jms/provider/JMSBindingServiceBindingProvider.java
new file mode 100644
index 0000000000..15a4d0ada2
--- /dev/null
+++ b/sandbox/sebastien/java/sca-node/modules/binding-jms/src/main/java/org/apache/tuscany/sca/binding/jms/provider/JMSBindingServiceBindingProvider.java
@@ -0,0 +1,227 @@
+/*
+ * 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.binding.jms.provider;
+
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import javax.jms.Destination;
+import javax.jms.JMSException;
+import javax.jms.Message;
+import javax.jms.MessageConsumer;
+import javax.jms.Session;
+import javax.naming.NamingException;
+
+import org.apache.tuscany.sca.binding.jms.impl.JMSBinding;
+import org.apache.tuscany.sca.binding.jms.impl.JMSBindingConstants;
+import org.apache.tuscany.sca.binding.jms.impl.JMSBindingException;
+import org.apache.tuscany.sca.interfacedef.Interface;
+import org.apache.tuscany.sca.interfacedef.InterfaceContract;
+import org.apache.tuscany.sca.provider.ServiceBindingProvider;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentService;
+import org.apache.tuscany.sca.work.WorkScheduler;
+
+/**
+ * Implementation of the JMS service binding provider.
+ * 
+ * @version $Rev$ $Date$
+ */
+public class JMSBindingServiceBindingProvider implements ServiceBindingProvider {
+    private static final Logger logger = Logger.getLogger(JMSBindingServiceBindingProvider.class.getName());
+
+    private RuntimeComponentService service;
+    private JMSBinding jmsBinding;
+    private JMSResourceFactory jmsResourceFactory;
+    private MessageConsumer consumer;
+    private WorkScheduler workScheduler;
+    private boolean running;
+
+    public JMSBindingServiceBindingProvider(RuntimeComponent component,
+                                            RuntimeComponentService service,
+                                            JMSBinding binding,
+                                            WorkScheduler workScheduler) {
+        this.service = service;
+        this.jmsBinding = binding;
+        this.workScheduler = workScheduler;
+
+        jmsResourceFactory = new JMSResourceFactory(binding.getConnectionFactoryName(), binding.getInitialContextFactoryName(), binding.getJndiURL());
+
+        if (jmsBinding.getDestinationName().equals(JMSBindingConstants.DEFAULT_DESTINATION_NAME)) {
+            // use the SCA service name as the default destination name
+            jmsBinding.setDestinationName(service.getName());
+        }
+
+        if (XMLTextMessageProcessor.class.isAssignableFrom(jmsBinding.getRequestMessageProcessor().getClass())) {
+            setXMLDataBinding(service);
+        }
+
+    }
+
+    protected void setXMLDataBinding(RuntimeComponentService service) {
+        if (service.getInterfaceContract() != null) {
+            try {
+                InterfaceContract ic = (InterfaceContract)service.getInterfaceContract().clone();
+
+                Interface ii = (Interface)ic.getInterface().clone();
+                ii.resetDataBinding("org.apache.axiom.om.OMElement");
+                ic.setInterface(ii);
+                service.setInterfaceContract(ic);
+
+            } catch (CloneNotSupportedException e) {
+                throw new RuntimeException(e);
+            }
+        }
+    }
+
+    public InterfaceContract getBindingInterfaceContract() {
+        return service.getInterfaceContract();
+    }
+
+    public boolean supportsOneWayInvocation() {
+        return true;
+    }
+
+    public void start() {
+        this.running = true;
+
+        try {
+            registerListerner();
+        } catch (Exception e) {
+            throw new JMSBindingException("Error starting JMSServiceBinding", e);
+        }
+    }
+
+    public void stop() {
+        this.running = false;
+        try {
+            consumer.close();
+            jmsResourceFactory.closeConnection();
+        } catch (Exception e) {
+            throw new JMSBindingException("Error stopping JMSServiceBinding", e);
+        }
+    }
+
+    private void registerListerner() throws NamingException, JMSException {
+
+        Session session = jmsResourceFactory.createSession();
+        Destination destination = lookupDestinationQueue();
+
+        consumer = session.createConsumer(destination);
+
+        final JMSBindingListener listener = new JMSBindingListener(jmsBinding, jmsResourceFactory, service);
+        try {
+
+            consumer.setMessageListener(listener);
+            jmsResourceFactory.startConnection();
+
+        } catch (javax.jms.IllegalStateException e) {
+            
+            // setMessageListener not allowed in JEE container so use Tuscany threads
+
+            jmsResourceFactory.startConnection();
+            workScheduler.scheduleWork(new Runnable() {
+                public void run() {
+                    try {
+                        while (running) {
+                           final Message msg = consumer.receive();
+                           workScheduler.scheduleWork(new Runnable() {
+                               public void run() {
+                                   try {
+                                       listener.onMessage(msg);
+                                   } catch (Exception e) {
+                                       e.printStackTrace();
+                                   }
+                               }});
+                        }
+                    } catch (Exception e) {
+                        e.printStackTrace();
+                    }
+                }});
+        }
+        logger.log(Level.INFO, "JMS service '" + service.getName() + "' listening on destination " + jmsBinding.getDestinationName());
+    }
+
+    /**
+     * Looks up the Destination Queue for the JMS Binding.
+     * <p>
+     * What happens in the look up will depend on the create mode specified for the JMS Binding:
+     * <ul>
+     * <li>always - the JMS queue is always created. It is an error if the queue already exists
+     * <li>ifnotexist - the JMS queue is created if it does not exist. It is not an error if the queue already exists
+     * <li>never - the JMS queue is never created. It is an error if the queue does not exist
+     * </ul>
+     * See the SCA JMS Binding specification for more information.
+     * <p>
+     * 
+     * @return The Destination queue.
+     * @throws NamingException Failed to lookup JMS queue
+     * @throws JMSBindingException Failed to lookup JMS Queue. Probable cause is that the JMS queue's current
+     *             existence/non-existence is not compatible with the create mode specified on the binding
+     */
+    private Destination lookupDestinationQueue() throws NamingException, JMSBindingException {
+        Destination destination = jmsResourceFactory.lookupDestination(jmsBinding.getDestinationName());
+
+        String qCreateMode = jmsBinding.getDestinationCreate();
+        if (qCreateMode.equals(JMSBindingConstants.CREATE_ALWAYS)) {
+            // In this mode, the queue must not already exist as we are creating it
+            if (destination != null) {
+                throw new JMSBindingException("JMS Destination " + jmsBinding.getDestinationName()
+                    + " already exists but has create mode of \""
+                    + qCreateMode
+                    + "\" while registering service "
+                    + service.getName()
+                    + " listener");
+            }
+
+            // Create the queue
+            destination = jmsResourceFactory.createDestination(jmsBinding.getDestinationName());
+
+        } else if (qCreateMode.equals(JMSBindingConstants.CREATE_IF_NOT_EXIST)) {
+            // In this mode, the queue may nor may not exist. It will be created if it does not exist
+            if (destination == null) {
+                destination = jmsResourceFactory.createDestination(jmsBinding.getDestinationName());
+            }
+
+        } else if (qCreateMode.equals(JMSBindingConstants.CREATE_NEVER)) {
+            // In this mode, the queue must have already been created.
+            if (destination == null) {
+                throw new JMSBindingException("JMS Destination " + jmsBinding.getDestinationName()
+                    + " not found but create mode of \""
+                    + qCreateMode
+                    + "\" while registering service "
+                    + service.getName()
+                    + " listener");
+            }
+        }
+
+        // Make sure we ended up with a queue
+        if (destination == null) {
+            throw new JMSBindingException("JMS Destination " + jmsBinding.getDestinationName()
+                + " not found with create mode of \""
+                + qCreateMode
+                + "\" while registering service "
+                + service.getName()
+                + " listener");
+        }
+
+        return destination;
+    }
+}