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package org.mule.providers.vm; |
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import org.mule.impl.MuleMessage; |
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import org.mule.providers.PollingReceiverWorker; |
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import org.mule.providers.TransactedPollingMessageReceiver; |
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import org.mule.umo.UMOComponent; |
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import org.mule.umo.UMOEvent; |
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import org.mule.umo.UMOException; |
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import org.mule.umo.UMOMessage; |
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import org.mule.umo.endpoint.UMOEndpoint; |
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import org.mule.umo.lifecycle.InitialisationException; |
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import org.mule.umo.provider.UMOConnector; |
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import org.mule.util.queue.Queue; |
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import org.mule.util.queue.QueueSession; |
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import java.util.LinkedList; |
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import java.util.List; |
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import edu.emory.mathcs.backport.java.util.concurrent.RejectedExecutionException; |
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public class VMMessageReceiver extends TransactedPollingMessageReceiver |
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{ |
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private VMConnector connector; |
39 | 44 | private final Object lock = new Object(); |
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public VMMessageReceiver(UMOConnector connector, UMOComponent component, UMOEndpoint endpoint) |
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throws InitialisationException |
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{ |
44 | 44 | super(connector, component, endpoint); |
45 | 44 | this.setReceiveMessagesInTransaction(endpoint.getTransactionConfig().isTransacted()); |
46 | 44 | this.connector = (VMConnector) connector; |
47 | 44 | } |
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protected void schedule() |
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throws RejectedExecutionException, NullPointerException, IllegalArgumentException |
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{ |
57 | 40 | if (connector.isQueueEvents()) |
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{ |
59 | 24 | super.schedule(); |
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} |
61 | 40 | } |
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protected void doDispose() |
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{ |
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66 | 44 | } |
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protected void doConnect() throws Exception |
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{ |
70 | 40 | if (connector.isQueueEvents()) |
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{ |
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73 | 24 | QueueSession queueSession = connector.getQueueSession(); |
74 | 24 | Queue q = queueSession.getQueue(endpoint.getEndpointURI().getAddress()); |
75 | 24 | if (logger.isDebugEnabled()) |
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{ |
77 | 0 | logger.debug("Current queue depth for queue: " + endpoint.getEndpointURI().getAddress() |
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+ " is: " + q.size()); |
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} |
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} |
81 | 40 | } |
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protected void doDisconnect() throws Exception |
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{ |
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86 | 40 | } |
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public void onEvent(UMOEvent event) throws UMOException |
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{ |
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95 | 10 | UMOMessage msg = new MuleMessage(event.getTransformedMessage(), event.getMessage()); |
96 | 10 | synchronized (lock) |
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{ |
98 | 10 | routeMessage(msg); |
99 | 10 | } |
100 | 10 | } |
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public Object onCall(UMOEvent event) throws UMOException |
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{ |
104 | 4 | UMOMessage msg = new MuleMessage(event.getTransformedMessage(), event.getMessage()); |
105 | 4 | return routeMessage(msg, event.isSynchronous()); |
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} |
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protected List getMessages() throws Exception |
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{ |
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111 | 44 | QueueSession qs = connector.getQueueSession(); |
112 | 44 | Queue queue = qs.getQueue(endpoint.getEndpointURI().getAddress()); |
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115 | 44 | List messages = new LinkedList(); |
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124 | 44 | int maxThreads = connector.getReceiverThreadingProfile().getMaxThreadsActive(); |
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126 | 44 | int batchSize = Math.max(1, Math.min(queue.size(), ((maxThreads / 2) - 1))); |
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129 | 44 | UMOEvent event = (UMOEvent) queue.poll(connector.getQueueTimeout()); |
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131 | 32 | if (event != null) |
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{ |
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134 | 12 | messages.add(event); |
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137 | 24 | for (int i = 0; i < batchSize && event != null; i++) |
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{ |
139 | 12 | event = (UMOEvent) queue.poll(0); |
140 | 12 | if (event != null) |
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{ |
142 | 0 | messages.add(event); |
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} |
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} |
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} |
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148 | 32 | return messages; |
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} |
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protected void processMessage(Object msg) throws Exception |
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{ |
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154 | 12 | UMOEvent event = (UMOEvent) msg; |
155 | 12 | UMOMessage message = new MuleMessage(event.getTransformedMessage(), event.getMessage()); |
156 | 12 | routeMessage(message); |
157 | 12 | } |
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protected PollingReceiverWorker createWork() |
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{ |
165 | 24 | return new VMReceiverWorker(this); |
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} |
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protected static class VMReceiverWorker extends PollingReceiverWorker |
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{ |
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public VMReceiverWorker(VMMessageReceiver pollingMessageReceiver) |
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{ |
178 | 24 | super(pollingMessageReceiver); |
179 | 24 | } |
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public void run() |
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{ |
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188 | 60 | while (this.getReceiver().isConnected()) |
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{ |
190 | 44 | super.run(); |
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} |
192 | 16 | } |
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} |
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} |