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package org.mule.transport.jms.xa; |
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import org.mule.api.transaction.Transaction; |
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import org.mule.config.i18n.CoreMessages; |
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import org.mule.transaction.IllegalTransactionStateException; |
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import org.mule.transaction.TransactionCoordination; |
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import org.mule.transaction.XaTransaction; |
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|
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import java.lang.reflect.Method; |
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import java.lang.reflect.Proxy; |
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|
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import javax.jms.JMSException; |
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import javax.jms.MessageConsumer; |
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import javax.jms.MessageProducer; |
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import javax.jms.QueueReceiver; |
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import javax.jms.QueueSender; |
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import javax.jms.Session; |
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import javax.jms.TopicPublisher; |
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import javax.jms.TopicSubscriber; |
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import javax.jms.XAQueueSession; |
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import javax.jms.XASession; |
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import javax.jms.XATopicSession; |
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import javax.transaction.xa.XAResource; |
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import org.apache.commons.logging.Log; |
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import org.apache.commons.logging.LogFactory; |
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public class SessionInvocationHandler implements TargetInvocationHandler |
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{ |
36 | 0 | protected static final transient Log logger = LogFactory.getLog(SessionInvocationHandler.class); |
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|
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private XASession xaSession; |
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private XAResource xaResource; |
40 | 0 | private volatile boolean enlisted = false; |
41 | 0 | private volatile boolean reuseObject = false; |
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private final Session session; |
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|
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private SessionInvocationHandler(XASession xaSession, Session session, Boolean sameRMOverrideValue) |
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{ |
46 | 0 | super(); |
47 | 0 | this.xaSession = xaSession; |
48 | 0 | this.session = session; |
49 | 0 | this.xaResource = new XAResourceWrapper(xaSession.getXAResource(), this, sameRMOverrideValue); |
50 | 0 | } |
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|
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public SessionInvocationHandler(XASession xaSession, Boolean sameRMOverrideValue) throws JMSException |
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{ |
54 | 0 | this(xaSession, xaSession.getSession(), sameRMOverrideValue); |
55 | 0 | } |
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|
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public SessionInvocationHandler(XAQueueSession xaSession, Boolean sameRMOverrideValue) throws JMSException |
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{ |
59 | 0 | this(xaSession, xaSession.getQueueSession(), sameRMOverrideValue); |
60 | 0 | } |
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|
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public SessionInvocationHandler(XATopicSession xaSession, Boolean sameRMOverrideValue) throws JMSException |
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{ |
64 | 0 | this(xaSession, xaSession.getTopicSession(), sameRMOverrideValue); |
65 | 0 | } |
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|
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public Object invoke(Object proxy, Method method, Object[] args) throws Throwable |
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{ |
69 | 0 | if (logger.isDebugEnabled()) |
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{ |
71 | 0 | logger.debug(this + " Invoking " + method); |
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} |
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|
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|
75 | 0 | if (XaTransaction.MuleXaObject.DELIST_METHOD_NAME.equals(method.getName())) |
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{ |
77 | 0 | return delist(); |
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} |
79 | 0 | else if (XaTransaction.MuleXaObject.ENLIST_METHOD_NAME.equals(method.getName())) |
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{ |
81 | 0 | return enlist(); |
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} |
83 | 0 | else if (XaTransaction.MuleXaObject.SET_REUSE_OBJECT_METHOD_NAME.equals(method.getName())) |
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{ |
85 | 0 | reuseObject = (Boolean) args[0]; |
86 | 0 | return null; |
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} |
88 | 0 | else if (XaTransaction.MuleXaObject.IS_REUSE_OBJECT_METHOD_NAME.equals(method.getName())) |
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{ |
90 | 0 | return reuseObject; |
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} |
92 | 0 | else if (XaTransaction.MuleXaObject.GET_TARGET_OBJECT_METHOD_NAME.equals(method.getName())) |
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{ |
94 | 0 | return getTargetObject(); |
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} |
96 | 0 | else if (XaTransaction.MuleXaObject.CLOSE_METHOD_NAME.equals(method.getName())) |
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{ |
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|
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try |
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{ |
101 | 0 | session.close(); |
102 | 0 | xaSession.close(); |
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} |
104 | 0 | catch (Exception ex) |
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{ |
106 | 0 | if (logger.isDebugEnabled()) |
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{ |
108 | 0 | logger.debug("Closing the session and the xaSession failed", ex); |
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} |
110 | 0 | } |
111 | 0 | return null; |
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} |
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|
114 | 0 | Object result = method.invoke(session, args); |
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|
116 | 0 | if (result instanceof TopicSubscriber) |
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{ |
118 | 0 | result = Proxy.newProxyInstance(Session.class.getClassLoader(), |
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new Class[]{TopicSubscriber.class}, new ConsumerProducerInvocationHandler(this, result)); |
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} |
121 | 0 | else if (result instanceof QueueReceiver) |
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{ |
123 | 0 | result = Proxy.newProxyInstance(Session.class.getClassLoader(), |
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new Class[]{QueueReceiver.class}, new ConsumerProducerInvocationHandler(this, result)); |
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} |
126 | 0 | else if (result instanceof MessageConsumer) |
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{ |
128 | 0 | result = Proxy.newProxyInstance(Session.class.getClassLoader(), |
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new Class[]{MessageConsumer.class}, new ConsumerProducerInvocationHandler(this, result)); |
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} |
131 | 0 | else if (result instanceof TopicPublisher) |
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{ |
133 | 0 | result = Proxy.newProxyInstance(Session.class.getClassLoader(), |
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new Class[]{TopicPublisher.class}, new ConsumerProducerInvocationHandler(this, result)); |
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} |
136 | 0 | else if (result instanceof QueueSender) |
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{ |
138 | 0 | result = Proxy.newProxyInstance(Session.class.getClassLoader(), |
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new Class[]{QueueSender.class}, new ConsumerProducerInvocationHandler(this, result)); |
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} |
141 | 0 | else if (result instanceof MessageProducer) |
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{ |
143 | 0 | result = Proxy.newProxyInstance(Session.class.getClassLoader(), |
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new Class[]{MessageProducer.class}, new ConsumerProducerInvocationHandler(this, result)); |
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} |
146 | 0 | return result; |
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} |
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|
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public boolean enlist() throws Exception |
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{ |
151 | 0 | if (isEnlisted()) |
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{ |
153 | 0 | return false; |
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} |
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|
156 | 0 | if (logger.isDebugEnabled()) |
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{ |
158 | 0 | logger.debug("Enlistment request: " + this); |
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} |
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|
161 | 0 | Transaction transaction = TransactionCoordination.getInstance().getTransaction(); |
162 | 0 | if (transaction == null) |
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{ |
164 | 0 | throw new IllegalTransactionStateException(CoreMessages.noMuleTransactionAvailable()); |
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} |
166 | 0 | if (!(transaction instanceof XaTransaction)) |
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{ |
168 | 0 | throw new IllegalTransactionStateException(CoreMessages.notMuleXaTransaction(transaction)); |
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} |
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|
171 | 0 | if (!isEnlisted()) |
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{ |
173 | 0 | if (logger.isDebugEnabled()) |
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{ |
175 | 0 | logger.debug("Enlisting resource " + xaResource + " in xa transaction " + transaction); |
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} |
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|
178 | 0 | enlisted = ((XaTransaction) transaction).enlistResource(xaResource); |
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} |
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|
181 | 0 | return enlisted; |
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} |
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|
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public boolean delist() throws Exception |
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{ |
186 | 0 | if (!isEnlisted()) |
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{ |
188 | 0 | return false; |
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} |
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|
191 | 0 | if (logger.isDebugEnabled()) |
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{ |
193 | 0 | logger.debug("Delistment request: " + this); |
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} |
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|
196 | 0 | Transaction transaction = TransactionCoordination.getInstance().getTransaction(); |
197 | 0 | if (transaction == null) |
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{ |
199 | 0 | throw new IllegalTransactionStateException(CoreMessages.noMuleTransactionAvailable()); |
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} |
201 | 0 | if (!(transaction instanceof XaTransaction)) |
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{ |
203 | 0 | throw new IllegalTransactionStateException(CoreMessages.notMuleXaTransaction(transaction)); |
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} |
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|
206 | 0 | if (isEnlisted()) |
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{ |
208 | 0 | if (logger.isDebugEnabled()) |
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{ |
210 | 0 | logger.debug("Delisting resource " + xaResource + " in xa transaction " + transaction); |
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} |
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|
213 | 0 | enlisted = !((XaTransaction) transaction).delistResource(xaResource, XAResource.TMSUCCESS); |
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} |
215 | 0 | return !isEnlisted(); |
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} |
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public boolean isEnlisted() |
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{ |
220 | 0 | return enlisted; |
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} |
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public void setEnlisted(boolean enlisted) |
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{ |
225 | 0 | this.enlisted = enlisted; |
226 | 0 | } |
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|
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public Object getTargetObject() |
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{ |
230 | 0 | return xaSession; |
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} |
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public XAResource getXAResource() |
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{ |
235 | 0 | return xaResource; |
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} |
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} |