diff options
Diffstat (limited to 'sca-java-1.x/branches/sca-java-1.6.2/modules/binding-jms-runtime/src/main/java/org/apache/tuscany/sca/binding/jms/provider/RRBJMSBindingInvoker.java')
| -rw-r--r-- | sca-java-1.x/branches/sca-java-1.6.2/modules/binding-jms-runtime/src/main/java/org/apache/tuscany/sca/binding/jms/provider/RRBJMSBindingInvoker.java | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/sca-java-1.x/branches/sca-java-1.6.2/modules/binding-jms-runtime/src/main/java/org/apache/tuscany/sca/binding/jms/provider/RRBJMSBindingInvoker.java b/sca-java-1.x/branches/sca-java-1.6.2/modules/binding-jms-runtime/src/main/java/org/apache/tuscany/sca/binding/jms/provider/RRBJMSBindingInvoker.java new file mode 100644 index 0000000000..ee9501bf89 --- /dev/null +++ b/sca-java-1.x/branches/sca-java-1.6.2/modules/binding-jms-runtime/src/main/java/org/apache/tuscany/sca/binding/jms/provider/RRBJMSBindingInvoker.java @@ -0,0 +1,270 @@ +/* + * 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.lang.reflect.InvocationTargetException; + +import javax.jms.Destination; +import javax.jms.JMSException; +import javax.jms.Session; +import javax.naming.NamingException; + +import org.apache.tuscany.sca.binding.jms.context.JMSBindingContext; +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.Operation; +import org.apache.tuscany.sca.interfacedef.util.FaultException; +import org.apache.tuscany.sca.invocation.DataExchangeSemantics; +import org.apache.tuscany.sca.invocation.Invoker; +import org.apache.tuscany.sca.runtime.RuntimeComponentReference; +import org.apache.tuscany.sca.runtime.RuntimeWire; +import org.osoa.sca.ServiceRuntimeException; + +/** + * Invoker for the JMS binding. + * + * @version $Rev$ $Date$ + */ +public class RRBJMSBindingInvoker implements Invoker, DataExchangeSemantics { + + protected Operation operation; + protected String operationName; + + protected JMSBinding jmsBinding; + protected JMSResourceFactory jmsResourceFactory; + protected Destination bindingRequestDest; + protected Destination bindingReplyDest; + protected RuntimeComponentReference reference; + protected RuntimeWire runtimeWire; + + public RRBJMSBindingInvoker(JMSBinding jmsBinding, Operation operation, JMSResourceFactory jmsResourceFactory, RuntimeComponentReference reference) { + + this.operation = operation; + operationName = operation.getName(); + + this.jmsBinding = jmsBinding; + this.jmsResourceFactory = jmsResourceFactory; + this.reference = reference; + this.runtimeWire = reference.getRuntimeWire(jmsBinding); + + try { + // If this is a callback reference, the destination is determined dynamically based on + // properties of the inbound service request. We should not look for or require a + // statically-configured destination unless a message is received that does not have + // the necessary properties. + if (!reference.isCallback()) { + bindingRequestDest = lookupDestination(); + } + bindingReplyDest = lookupResponseDestination(); + } catch (NamingException e) { + throw new JMSBindingException(e); + } + } + + /** + * Looks up the Destination Queue for the JMS Binding + * + * @return The Destination Queue + * @throws NamingException Failed to lookup Destination Queue + * @throws JMSBindingException Failed to lookup Destination Queue + * @see #lookupDestinationQueue(boolean) + */ + protected Destination lookupDestination() throws NamingException, JMSBindingException { + return lookupDestinationQueue(false); + } + + /** + * Looks up the Destination Response Queue for the JMS Binding + * + * @return The Destination Response Queue + * @throws NamingException Failed to lookup Destination Response Queue + * @throws JMSBindingException Failed to lookup Destination Response Queue + * @see #lookupDestinationQueue(boolean) + */ + protected Destination lookupResponseDestination() throws NamingException, JMSBindingException { + return lookupDestinationQueue(true); + } + + /** + * 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> + * + * @param isReponseQueue <code>true</code> if we are creating a response queue. + * <code>false</code> if we are creating a request queue + * @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 + */ + protected Destination lookupDestinationQueue(boolean isReponseQueue) throws NamingException, JMSBindingException { + String queueName; + String queueType; + String qCreateMode; + + if (isReponseQueue) { + queueName = jmsBinding.getResponseDestinationName(); + queueType = "JMS Response Destination "; + qCreateMode = jmsBinding.getResponseDestinationCreate(); + if (queueName == null) { + return null; + } + } else { + queueName = jmsBinding.getDestinationName(); + queueType = "JMS Destination "; + qCreateMode = jmsBinding.getDestinationCreate(); + } + + Destination dest = jmsResourceFactory.lookupDestination(queueName); + + if (qCreateMode.equals(JMSBindingConstants.CREATE_ALWAYS)) { + // In this mode, the queue must not already exist as we are creating it + if (dest != null) { + throw new JMSBindingException(queueType + queueName + + " already exists but has create mode of \"" + + qCreateMode + + "\" while registering binding " + + jmsBinding.getName() + + " invoker"); + } + // Create the queue + dest = jmsResourceFactory.createDestination(queueName); + + } 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 (dest == null) { + dest = jmsResourceFactory.createDestination(queueName); + } + + } else if (qCreateMode.equals(JMSBindingConstants.CREATE_NEVER)) { + // In this mode, the queue must have already been created. + if (dest == null) { + throw new JMSBindingException(queueType + queueName + + " not found but create mode of \"" + + qCreateMode + + "\" while registering binding " + + jmsBinding.getName() + + " invoker"); + } + } + + // Make sure we ended up with a queue + if (dest == null) { + throw new JMSBindingException(queueType + queueName + + " not found with create mode of \"" + + qCreateMode + + "\" while registering binding " + + jmsBinding.getName() + + " invoker"); + } + + return dest; + } + + public org.apache.tuscany.sca.invocation.Message invoke(org.apache.tuscany.sca.invocation.Message tuscanyMsg) { + try { + // populate the message context with JMS binding information + JMSBindingContext context = new JMSBindingContext(); + context.setJmsResourceFactory(jmsResourceFactory); + tuscanyMsg.setBindingContext(context); + + // get a jms session to cover the creation and sending of the message + Session session = context.getJmsSession(); + + context.setRequestDestination(getRequestDestination(tuscanyMsg, session)); + context.setReplyToDestination(getReplyToDestination(session)); + + try { + tuscanyMsg = runtimeWire.getBindingInvocationChain().getHeadInvoker().invoke(tuscanyMsg); + } catch (ServiceRuntimeException e) { + if (e.getCause() instanceof InvocationTargetException) { + if ((e.getCause().getCause() instanceof RuntimeException)) { + tuscanyMsg.setFaultBody(e.getCause()); + } else { + tuscanyMsg.setFaultBody(((InvocationTargetException)e.getCause()).getTargetException()); + } + } else if (e.getCause() instanceof FaultException) { + tuscanyMsg.setFaultBody(e.getCause()); + } else { + tuscanyMsg.setFaultBody(e); + } + } catch (IllegalStateException e) { + tuscanyMsg.setFaultBody(e); + } catch (Throwable e) { + tuscanyMsg.setFaultBody(e); + } finally { + context.closeJmsSession(); + if (jmsResourceFactory.isConnectionClosedAfterUse()) { + jmsResourceFactory.closeConnection(); + } + } + + return tuscanyMsg; + } catch (Exception e) { + throw new JMSBindingException(e); + } + } + + protected Destination getRequestDestination(org.apache.tuscany.sca.invocation.Message tuscanyMsg, Session session) throws JMSBindingException, NamingException, JMSException { + Destination requestDestination; + if (reference.isCallback()) { + String toURI = tuscanyMsg.getTo().getURI(); + if (toURI != null && toURI.startsWith("jms:")) { + // the msg to uri contains the callback destination name + // this is an jms physical name not a jndi name so need to use session.createQueue + requestDestination = session.createQueue(toURI.substring(4)); + } else { + requestDestination = lookupDestination(); + } + } else { + requestDestination = bindingRequestDest; + } + + return requestDestination; + } + + protected Destination getReplyToDestination(Session session) throws JMSException, JMSBindingException, NamingException { + Destination replyToDest; + if (operation.isNonBlocking()) { + replyToDest = null; + } else { + if (bindingReplyDest != null) { + replyToDest = bindingReplyDest; + } else { + replyToDest = session.createTemporaryQueue(); + } + } + return replyToDest; + } + + public boolean allowsPassByReference() { + // JMS always pass by value + return true; + } + +} |