diff options
Diffstat (limited to 'sandbox/event/modules/binding-jms-runtime/src/main/java/org/apache/tuscany/sca/binding/jms/provider/JMSBindingServiceBindingProvider.java')
| -rw-r--r-- | sandbox/event/modules/binding-jms-runtime/src/main/java/org/apache/tuscany/sca/binding/jms/provider/JMSBindingServiceBindingProvider.java | 306 |
1 files changed, 306 insertions, 0 deletions
diff --git a/sandbox/event/modules/binding-jms-runtime/src/main/java/org/apache/tuscany/sca/binding/jms/provider/JMSBindingServiceBindingProvider.java b/sandbox/event/modules/binding-jms-runtime/src/main/java/org/apache/tuscany/sca/binding/jms/provider/JMSBindingServiceBindingProvider.java new file mode 100644 index 0000000000..fc9cacf5e1 --- /dev/null +++ b/sandbox/event/modules/binding-jms-runtime/src/main/java/org/apache/tuscany/sca/binding/jms/provider/JMSBindingServiceBindingProvider.java @@ -0,0 +1,306 @@ +/* + * 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.Queue; +import javax.jms.Session; +import javax.jms.Topic; +import javax.naming.NamingException; + +import org.apache.axiom.om.OMElement; +import org.apache.tuscany.sca.assembly.Binding; +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.binding.ws.WebServiceBinding; +import org.apache.tuscany.sca.binding.ws.WebServiceBindingFactory; +import org.apache.tuscany.sca.binding.ws.wsdlgen.BindingWSDLGenerator; +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +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 Binding targetBinding; + private JMSBinding jmsBinding; + private JMSResourceFactory jmsResourceFactory; + private MessageConsumer consumer; + private WorkScheduler workScheduler; + private boolean running; + + private Destination destination; + + private ExtensionPointRegistry extensionPoints; + + private RuntimeComponent component; + private InterfaceContract wsdlInterfaceContract; + + public JMSBindingServiceBindingProvider(RuntimeComponent component, RuntimeComponentService service, Binding targetBinding, JMSBinding binding, WorkScheduler workScheduler, ExtensionPointRegistry extensionPoints, JMSResourceFactory jmsResourceFactory) { + this.component = component; + this.service = service; + this.jmsBinding = binding; + this.workScheduler = workScheduler; + this.targetBinding = targetBinding; + this.extensionPoints = extensionPoints; + this.jmsResourceFactory = jmsResourceFactory; + + if (jmsBinding.getDestinationName().equals(JMSBindingConstants.DEFAULT_DESTINATION_NAME)) { + if (!service.isCallback()) { + // use the SCA service name as the default destination name + jmsBinding.setDestinationName(service.getName()); + } + } + + if (XMLTextMessageProcessor.class.isAssignableFrom(JMSMessageProcessorUtil.getRequestMessageProcessor(jmsBinding).getClass())) { + if (!isOnMessage()) { + setXMLDataBinding(service); + } + } + + } + + protected boolean isOnMessage() { + InterfaceContract ic = getBindingInterfaceContract(); + if (ic.getInterface().getOperations().size() != 1) { + return false; + } + return "onMessage".equals(ic.getInterface().getOperations().get(0).getName()); + } + + protected void setXMLDataBinding(RuntimeComponentService service) { + if (service.getInterfaceContract() != null) { + WebServiceBindingFactory wsFactory = extensionPoints.getExtensionPoint(WebServiceBindingFactory.class); + WebServiceBinding wsBinding = wsFactory.createWebServiceBinding(); + BindingWSDLGenerator.generateWSDL(component, service, wsBinding, extensionPoints, null); + wsdlInterfaceContract = wsBinding.getBindingInterfaceContract(); + wsdlInterfaceContract.getInterface().resetDataBinding(OMElement.class.getName()); + + // TODO: TUSCANY-xxx, section 5.2 "Default Data Binding" in the JMS binding spec + +// try { +// InterfaceContract ic = (InterfaceContract)service.getInterfaceContract().clone(); +// Interface ii = ic.getInterface(); +// if (ii.getOperations().size() == 1 && "onMessage".equals(ii.getOperations().get(0).getName())) { +// return; +// } +// ii = (Interface)ii.clone(); +// ii.resetDataBinding("org.apache.axiom.om.OMElement"); +// ic.setInterface(ii); +// service.setInterfaceContract(ic); +// +// } catch (CloneNotSupportedException e) { +// throw new RuntimeException(e); +// } + } + } + + public InterfaceContract getBindingInterfaceContract() { + if (wsdlInterfaceContract != null) { + return wsdlInterfaceContract; + } else { + 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) { + // if using an embedded broker then when shutting down Tuscany the broker may get closed + // before this stop method is called. I can't see how to detect that so for now just + // ignore the exception if the message is that the transport is already disposed + if (!"Transport disposed.".equals(e.getMessage())) { + throw new JMSBindingException("Error stopping JMSServiceBinding", e); + } + } + } + + private void registerListerner() throws NamingException, JMSException { + + Session session = jmsResourceFactory.createSession(); + destination = lookupDestinationQueue(); + if (destination == null) { + destination = session.createTemporaryQueue(); + } + + if (jmsBinding.getJMSSelector() != null) { + consumer = session.createConsumer(destination, jmsBinding.getJMSSelector()); + } else { + consumer = session.createConsumer(destination); + } + + final JMSBindingListener listener = new JMSBindingListener(jmsBinding, jmsResourceFactory, service, targetBinding); + 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.isCallback() ? "callback service" : "service") + + " '" + + service.getName() + + "' listening on destination " + + ((destination instanceof Queue) ? ((Queue)destination).getQueueName() : ((Topic)destination).getTopicName())); + } + + /** + * 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 { + + if (service.isCallback() && JMSBindingConstants.DEFAULT_DESTINATION_NAME.equals(jmsBinding.getDestinationName())) { + // if its a callback service returning null indicates to use a temporary queue + return null; + } + + 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; + } + + public String getDestinationName() { + try { + if (destination instanceof Queue) { + return ((Queue)destination).getQueueName(); + } else if (destination instanceof Topic) { + return ((Topic)destination).getTopicName(); + } else { + return null; + } + } catch (JMSException e) { + throw new JMSBindingException(e); + } + } +} |