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package org.mule.transport.jms; |
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|
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import org.mule.api.MuleException; |
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import org.mule.api.MuleRuntimeException; |
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import org.mule.api.construct.FlowConstruct; |
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import org.mule.api.endpoint.InboundEndpoint; |
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import org.mule.api.lifecycle.CreateException; |
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import org.mule.api.lifecycle.LifecycleException; |
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import org.mule.api.transaction.Transaction; |
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import org.mule.api.transaction.TransactionException; |
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import org.mule.api.transport.Connector; |
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import org.mule.config.i18n.MessageFactory; |
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import org.mule.transaction.TransactionCollection; |
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import org.mule.transport.AbstractMessageReceiver; |
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import org.mule.transport.AbstractReceiverWorker; |
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import org.mule.transport.ConnectException; |
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import org.mule.transport.jms.filters.JmsSelectorFilter; |
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import org.mule.util.ClassUtils; |
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|
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import java.util.ArrayList; |
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import java.util.Iterator; |
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import java.util.List; |
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|
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import javax.jms.Destination; |
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import javax.jms.JMSException; |
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import javax.jms.Message; |
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import javax.jms.MessageConsumer; |
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import javax.jms.MessageListener; |
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import javax.jms.Session; |
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import javax.resource.spi.work.WorkException; |
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|
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import edu.emory.mathcs.backport.java.util.concurrent.CopyOnWriteArrayList; |
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|
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import org.apache.commons.logging.Log; |
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import org.apache.commons.logging.LogFactory; |
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|
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|
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|
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|
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|
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|
52 | 0 | public class MultiConsumerJmsMessageReceiver extends AbstractMessageReceiver |
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{ |
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protected final List<SubReceiver> consumers; |
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|
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protected final int receiversCount; |
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|
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private final JmsConnector jmsConnector; |
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|
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public MultiConsumerJmsMessageReceiver(Connector connector, FlowConstruct flowConstruct, InboundEndpoint endpoint) |
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throws CreateException |
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{ |
63 | 0 | super(connector, flowConstruct, endpoint); |
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|
65 | 0 | jmsConnector = (JmsConnector) connector; |
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|
67 | 0 | final boolean isTopic = jmsConnector.getTopicResolver().isTopic(endpoint, true); |
68 | 0 | if (isTopic && jmsConnector.getNumberOfConsumers() != 1) |
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{ |
70 | 0 | if (logger.isInfoEnabled()) |
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{ |
72 | 0 | logger.info("Destination " + getEndpoint().getEndpointURI() + " is a topic, but " + jmsConnector.getNumberOfConsumers() + |
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" receivers have been requested. Will configure only 1."); |
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} |
75 | 0 | receiversCount = 1; |
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} |
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else |
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{ |
79 | 0 | receiversCount = jmsConnector.getNumberOfConsumers(); |
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} |
81 | 0 | if (logger.isDebugEnabled()) |
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{ |
83 | 0 | logger.debug("Creating " + receiversCount + " sub-receivers for " + endpoint.getEndpointURI()); |
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} |
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|
86 | 0 | consumers = new CopyOnWriteArrayList(); |
87 | 0 | } |
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|
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@Override |
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protected void doStart() throws MuleException |
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{ |
92 | 0 | logger.debug("doStart()"); |
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SubReceiver sub; |
94 | 0 | for (Iterator<SubReceiver> it = consumers.iterator(); it.hasNext();) |
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{ |
96 | 0 | sub = it.next(); |
97 | 0 | sub.doStart(); |
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} |
99 | 0 | } |
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|
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@Override |
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protected void doStop() throws MuleException |
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{ |
104 | 0 | logger.debug("doStop()"); |
105 | 0 | if (consumers != null) |
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{ |
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SubReceiver sub; |
108 | 0 | for (Iterator<SubReceiver> it = consumers.iterator(); it.hasNext();) |
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{ |
110 | 0 | sub = it.next(); |
111 | 0 | sub.doStop(true); |
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} |
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} |
114 | 0 | } |
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|
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@Override |
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protected void doConnect() throws Exception |
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{ |
119 | 0 | logger.debug("doConnect()"); |
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|
121 | 0 | if (!consumers.isEmpty()) |
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{ |
123 | 0 | throw new IllegalStateException("List should be empty, there may be a concurrency issue here (see EE-1275)"); |
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} |
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|
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SubReceiver sub; |
127 | 0 | for (int i = 0; i < receiversCount; i++) |
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{ |
129 | 0 | sub = new SubReceiver(); |
130 | 0 | sub.doConnect(); |
131 | 0 | consumers.add(sub); |
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} |
133 | 0 | } |
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|
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@Override |
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protected void doDisconnect() throws Exception |
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{ |
138 | 0 | logger.debug("doDisconnect()"); |
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|
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SubReceiver sub; |
141 | 0 | for (Iterator<SubReceiver> it = consumers.iterator(); it.hasNext();) |
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{ |
143 | 0 | sub = it.next(); |
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try |
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{ |
146 | 0 | sub.doDisconnect(); |
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} |
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finally |
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{ |
150 | 0 | sub = null; |
151 | 0 | } |
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} |
153 | 0 | consumers.clear(); |
154 | 0 | } |
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|
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@Override |
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protected void doDispose() |
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{ |
159 | 0 | logger.debug("doDispose()"); |
160 | 0 | } |
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|
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@Override |
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protected boolean isDoStartMustFollowDoConnect() |
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{ |
165 | 0 | return true; |
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} |
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|
168 | 0 | private class SubReceiver implements MessageListener |
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{ |
170 | 0 | private final Log subLogger = LogFactory.getLog(getClass()); |
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|
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private volatile Session session; |
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private volatile MessageConsumer consumer; |
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|
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protected volatile boolean connected; |
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protected volatile boolean started; |
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|
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protected void doConnect() throws MuleException |
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{ |
180 | 0 | subLogger.debug("SUB doConnect()"); |
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try |
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{ |
183 | 0 | createConsumer(); |
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} |
185 | 0 | catch (Exception e) |
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{ |
187 | 0 | throw new LifecycleException(e, this); |
188 | 0 | } |
189 | 0 | connected = true; |
190 | 0 | } |
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|
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protected void doDisconnect() throws MuleException |
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{ |
194 | 0 | subLogger.debug("SUB doDisconnect()"); |
195 | 0 | if (started) |
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{ |
197 | 0 | doStop(true); |
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} |
199 | 0 | closeConsumer(); |
200 | 0 | connected = false; |
201 | 0 | } |
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|
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protected void closeConsumer() |
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{ |
205 | 0 | jmsConnector.closeQuietly(consumer); |
206 | 0 | consumer = null; |
207 | 0 | jmsConnector.closeQuietly(session); |
208 | 0 | session = null; |
209 | 0 | } |
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|
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protected void doStart() throws MuleException |
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{ |
213 | 0 | subLogger.debug("SUB doStart()"); |
214 | 0 | if (!connected) |
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{ |
216 | 0 | doConnect(); |
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} |
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|
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try |
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{ |
221 | 0 | consumer.setMessageListener(this); |
222 | 0 | started = true; |
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} |
224 | 0 | catch (JMSException e) |
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{ |
226 | 0 | throw new LifecycleException(e, this); |
227 | 0 | } |
228 | 0 | } |
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|
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|
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|
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|
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|
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|
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protected void doStop(boolean force) throws MuleException |
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{ |
237 | 0 | subLogger.debug("SUB doStop()"); |
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|
239 | 0 | if (consumer != null) |
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{ |
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try |
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{ |
243 | 0 | consumer.setMessageListener(null); |
244 | 0 | started = false; |
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} |
246 | 0 | catch (JMSException e) |
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{ |
248 | 0 | if (force) |
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{ |
250 | 0 | logger.warn("Unable to cleanly stop subreceiver: " + e.getMessage()); |
251 | 0 | started = false; |
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} |
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else |
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{ |
255 | 0 | throw new LifecycleException(e, this); |
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} |
257 | 0 | } |
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} |
259 | 0 | } |
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|
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|
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|
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|
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protected void createConsumer() throws Exception |
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{ |
266 | 0 | subLogger.debug("SUB createConsumer()"); |
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|
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try |
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{ |
270 | 0 | JmsSupport jmsSupport = jmsConnector.getJmsSupport(); |
271 | 0 | boolean topic = jmsConnector.getTopicResolver().isTopic(endpoint, true); |
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|
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|
274 | 0 | if (session == null) |
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{ |
276 | 0 | session = jmsConnector.getSession(endpoint); |
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} |
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|
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|
280 | 0 | Destination dest = jmsSupport.createDestination(session, endpoint); |
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|
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|
283 | 0 | String selector = null; |
284 | 0 | if (endpoint.getFilter() != null && endpoint.getFilter() instanceof JmsSelectorFilter) |
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{ |
286 | 0 | selector = ((JmsSelectorFilter) endpoint.getFilter()).getExpression(); |
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} |
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else |
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{ |
290 | 0 | if (endpoint.getProperties() != null) |
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{ |
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|
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|
294 | 0 | selector = (String) endpoint.getProperties().get(JmsConstants.JMS_SELECTOR_PROPERTY); |
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} |
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} |
297 | 0 | String tempDurable = (String) endpoint.getProperties().get(JmsConstants.DURABLE_PROPERTY); |
298 | 0 | boolean durable = jmsConnector.isDurable(); |
299 | 0 | if (tempDurable != null) |
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{ |
301 | 0 | durable = Boolean.valueOf(tempDurable); |
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} |
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|
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|
305 | 0 | String durableName = (String) endpoint.getProperties().get(JmsConstants.DURABLE_NAME_PROPERTY); |
306 | 0 | if (durableName == null && durable && topic) |
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{ |
308 | 0 | durableName = "mule." + jmsConnector.getName() + "." + endpoint.getEndpointURI().getAddress(); |
309 | 0 | logger.debug("Jms Connector for this receiver is durable but no durable name has been specified. Defaulting to: " |
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+ durableName); |
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} |
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|
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|
314 | 0 | consumer = jmsSupport.createConsumer(session, dest, selector, jmsConnector.isNoLocal(), durableName, |
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topic, endpoint); |
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} |
317 | 0 | catch (JMSException e) |
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{ |
319 | 0 | throw new ConnectException(e, MultiConsumerJmsMessageReceiver.this); |
320 | 0 | } |
321 | 0 | } |
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|
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public void onMessage(final Message message) |
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{ |
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try |
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{ |
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|
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|
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|
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|
331 | 0 | getWorkManager().doWork(new JmsWorker(message, MultiConsumerJmsMessageReceiver.this, this)); |
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} |
333 | 0 | catch (WorkException e) |
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{ |
335 | 0 | throw new MuleRuntimeException(MessageFactory.createStaticMessage( |
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"Couldn't submit a work item to the WorkManager"), e); |
337 | 0 | } |
338 | 0 | } |
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} |
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|
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protected class JmsWorker extends AbstractReceiverWorker |
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{ |
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private final SubReceiver subReceiver; |
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|
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public JmsWorker(Message message, AbstractMessageReceiver receiver, SubReceiver subReceiver) |
346 | 0 | { |
347 | 0 | super(new ArrayList<Object>(1), receiver); |
348 | 0 | this.subReceiver = subReceiver; |
349 | 0 | messages.add(message); |
350 | 0 | } |
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|
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@Override |
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protected Object preProcessMessage(Object message) throws Exception |
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{ |
355 | 0 | Message m = (Message) message; |
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|
357 | 0 | if (logger.isDebugEnabled()) |
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{ |
359 | 0 | logger.debug("Message received it is of type: " + |
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ClassUtils.getSimpleName(message.getClass())); |
361 | 0 | if (m.getJMSDestination() != null) |
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{ |
363 | 0 | logger.debug("Message received on " + m.getJMSDestination() + " (" |
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+ m.getJMSDestination().getClass().getName() + ")"); |
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} |
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else |
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{ |
368 | 0 | logger.debug("Message received on unknown destination"); |
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} |
370 | 0 | logger.debug("Message CorrelationId is: " + m.getJMSCorrelationID()); |
371 | 0 | logger.debug("Jms Message Id is: " + m.getJMSMessageID()); |
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} |
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|
374 | 0 | if (m.getJMSRedelivered()) |
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{ |
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|
377 | 0 | RedeliveryHandler redeliveryHandler = jmsConnector.getRedeliveryHandlerFactory().create(); |
378 | 0 | redeliveryHandler.setConnector(jmsConnector); |
379 | 0 | if (logger.isDebugEnabled()) |
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{ |
381 | 0 | logger.debug("Message with correlationId: " + m.getJMSCorrelationID() |
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+ " has redelivered flag set, handing off to Redelivery Handler"); |
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} |
384 | 0 | redeliveryHandler.handleRedelivery(m); |
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} |
386 | 0 | return m; |
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|
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} |
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|
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@Override |
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protected void bindTransaction(Transaction tx) throws TransactionException |
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{ |
393 | 0 | if (tx instanceof JmsTransaction || tx instanceof TransactionCollection) |
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{ |
395 | 0 | if (logger.isDebugEnabled()) |
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{ |
397 | 0 | logger.debug("Binding " + subReceiver.session + " to " + jmsConnector.getConnection()); |
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} |
399 | 0 | tx.bindResource(jmsConnector.getConnection(), subReceiver.session); |
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} |
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else |
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{ |
403 | 0 | if (tx instanceof JmsClientAcknowledgeTransaction) |
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{ |
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|
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|
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|
408 | 0 | ((JmsClientAcknowledgeTransaction) tx).setMessage((Message) messages.get(0)); |
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} |
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} |
411 | 0 | } |
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} |
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|
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} |