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package org.mule.transport.vm; |
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import org.mule.DefaultMuleMessage; |
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import org.mule.api.MuleException; |
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import org.mule.api.MuleMessage; |
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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.service.Service; |
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import org.mule.api.transport.Connector; |
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import org.mule.transport.PollingReceiverWorker; |
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import org.mule.transport.TransactedPollingMessageReceiver; |
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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.ArrayList; |
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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 | 348 | private final Object lock = new Object(); |
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public VMMessageReceiver(Connector connector, Service service, InboundEndpoint endpoint) |
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throws CreateException |
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{ |
44 | 348 | super(connector, service, endpoint); |
45 | 348 | this.setReceiveMessagesInTransaction(endpoint.getTransactionConfig().isTransacted()); |
46 | 348 | this.connector = (VMConnector) connector; |
47 | 348 | } |
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protected void schedule() throws RejectedExecutionException, NullPointerException, IllegalArgumentException |
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{ |
56 | 344 | if (connector.isQueueEvents()) |
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{ |
58 | 70 | super.schedule(); |
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} |
60 | 344 | } |
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protected void doDispose() |
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{ |
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65 | 694 | } |
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protected void doConnect() throws Exception |
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{ |
69 | 344 | if (connector.isQueueEvents()) |
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{ |
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72 | 70 | QueueSession queueSession = connector.getQueueSession(); |
73 | 70 | Queue q = queueSession.getQueue(endpoint.getEndpointURI().getAddress()); |
74 | 70 | if (logger.isDebugEnabled()) |
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{ |
76 | 0 | logger.debug("Current queue depth for queue: " + endpoint.getEndpointURI().getAddress() + " is: " |
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+ q.size()); |
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} |
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} |
80 | 344 | } |
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protected void doDisconnect() throws Exception |
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{ |
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85 | 344 | } |
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public void onMessage(MuleMessage message) throws MuleException |
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{ |
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90 | 4044 | MuleMessage newMessage = new DefaultMuleMessage(message.getPayload(), message); |
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97 | 4044 | synchronized (lock) |
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{ |
99 | 4044 | routeMessage(newMessage); |
100 | 4044 | } |
101 | 4044 | } |
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public Object onCall(MuleMessage message, boolean synchronous) throws MuleException |
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{ |
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106 | 4062 | MuleMessage newMessage = new DefaultMuleMessage(message.getPayload(), message); |
107 | 4062 | return routeMessage(newMessage, synchronous); |
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} |
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protected List getMessages() throws Exception |
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{ |
115 | 39 | if (isReceiveMessagesInTransaction()) |
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{ |
117 | 5 | MuleMessage message = getFirstMessage(); |
118 | 5 | if (message == null) |
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{ |
120 | 3 | return null; |
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} |
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123 | 2 | List messages = new ArrayList(1); |
124 | 2 | messages.add(message); |
125 | 2 | return messages; |
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} |
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else |
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{ |
129 | 34 | return getFirstMessages(); |
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} |
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} |
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protected List getFirstMessages() throws Exception |
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{ |
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136 | 34 | QueueSession qs = connector.getQueueSession(); |
137 | 34 | Queue queue = qs.getQueue(endpoint.getEndpointURI().getAddress()); |
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140 | 34 | List messages = new LinkedList(); |
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148 | 34 | int maxThreads = connector.getReceiverThreadingProfile().getMaxThreadsActive(); |
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150 | 34 | int batchSize = Math.max(1, Math.min(queue.size(), ((maxThreads / 2) - 1))); |
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153 | 34 | MuleMessage message = (MuleMessage) queue.poll(connector.getQueueTimeout()); |
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155 | 16 | if (message != null) |
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{ |
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158 | 16 | messages.add(message); |
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161 | 36 | for (int i = 0; i < batchSize && message != null; i++) |
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{ |
163 | 20 | message = (MuleMessage) queue.poll(0); |
164 | 20 | if (message != null) |
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{ |
166 | 4 | messages.add(message); |
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} |
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} |
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} |
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172 | 16 | return messages; |
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} |
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protected MuleMessage getFirstMessage() throws Exception |
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{ |
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178 | 4 | QueueSession qs = connector.getQueueSession(); |
179 | 5 | Queue queue = qs.getQueue(endpoint.getEndpointURI().getAddress()); |
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181 | 5 | return (MuleMessage) queue.poll(connector.getQueueTimeout()); |
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} |
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protected void processMessage(Object msg) throws Exception |
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{ |
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187 | 22 | MuleMessage message = (MuleMessage) msg; |
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190 | 22 | MuleMessage newMessage = new DefaultMuleMessage(message.getPayload(), message); |
191 | 22 | routeMessage(newMessage); |
192 | 22 | } |
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protected PollingReceiverWorker createWork() |
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{ |
200 | 70 | 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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{ |
213 | 70 | super(pollingMessageReceiver); |
214 | 70 | } |
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public void run() |
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{ |
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223 | 61 | while (this.getReceiver().isConnected()) |
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{ |
225 | 39 | super.run(); |
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} |
227 | 22 | } |
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} |
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} |