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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.DefaultMuleException; |
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import org.mule.api.MuleEvent; |
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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.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.transport.Connector; |
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import org.mule.transport.ContinuousPollingReceiverWorker; |
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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; |
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public VMMessageReceiver(Connector connector, FlowConstruct flowConstruct, InboundEndpoint endpoint) |
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throws CreateException |
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{ |
42 | 0 | super(connector, flowConstruct, endpoint); |
43 | 0 | this.setReceiveMessagesInTransaction(endpoint.getTransactionConfig().isTransacted()); |
44 | 0 | this.connector = (VMConnector) connector; |
45 | 0 | } |
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@Override |
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protected void schedule() throws RejectedExecutionException, NullPointerException, IllegalArgumentException |
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{ |
54 | 0 | if (!endpoint.getExchangePattern().hasResponse()) |
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{ |
56 | 0 | super.schedule(); |
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} |
58 | 0 | } |
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@Override |
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protected void doDispose() |
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{ |
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64 | 0 | } |
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@Override |
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protected void doConnect() throws Exception |
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{ |
69 | 0 | if (!endpoint.getExchangePattern().hasResponse()) |
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{ |
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|
72 | 0 | QueueSession queueSession = connector.getQueueSession(); |
73 | 0 | Queue q = queueSession.getQueue(endpoint.getEndpointURI().getAddress()); |
74 | 0 | 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 | 0 | } |
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@Override |
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protected void doDisconnect() throws Exception |
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{ |
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86 | 0 | } |
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public void onMessage(MuleMessage message) throws MuleException |
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{ |
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|
91 | 0 | MuleMessage newMessage = new DefaultMuleMessage(message.getPayload(), message, connector.getMuleContext()); |
92 | 0 | routeMessage(newMessage); |
93 | 0 | } |
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public MuleMessage onCall(MuleMessage message) throws MuleException |
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{ |
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try |
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{ |
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|
100 | 0 | MuleMessage newMessage = message.createInboundMessage(); |
101 | 0 | MuleEvent event = routeMessage(newMessage); |
102 | 0 | MuleMessage returnedMessage = event == null ? null : event.getMessage(); |
103 | 0 | if (returnedMessage != null) |
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{ |
105 | 0 | returnedMessage = returnedMessage.createInboundMessage(); |
106 | 0 | returnedMessage.release(); |
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} |
108 | 0 | return returnedMessage; |
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} |
110 | 0 | catch (Exception e) |
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{ |
112 | 0 | throw new DefaultMuleException(e); |
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} |
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finally |
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{ |
116 | 0 | message.release(); |
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} |
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} |
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@Override |
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protected List<MuleMessage> getMessages() throws Exception |
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{ |
126 | 0 | if (isReceiveMessagesInTransaction()) |
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{ |
128 | 0 | MuleEvent message = getFirstMessage(); |
129 | 0 | if (message == null) |
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{ |
131 | 0 | return null; |
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} |
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|
134 | 0 | List<MuleMessage> messages = new ArrayList<MuleMessage>(1); |
135 | 0 | messages.add(message.getMessage()); |
136 | 0 | return messages; |
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} |
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else |
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{ |
140 | 0 | return getFirstMessages(); |
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} |
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} |
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protected List<MuleMessage> getFirstMessages() throws Exception |
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{ |
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147 | 0 | QueueSession qs = connector.getQueueSession(); |
148 | 0 | Queue queue = qs.getQueue(endpoint.getEndpointURI().getAddress()); |
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151 | 0 | List<MuleMessage> messages = new LinkedList<MuleMessage>(); |
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153 | 0 | int batchSize = getBatchSize(queue.size()); |
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156 | 0 | MuleEvent message = (MuleEvent) queue.poll(connector.getQueueTimeout()); |
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158 | 0 | if (message != null) |
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{ |
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161 | 0 | messages.add(message.getMessage()); |
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164 | 0 | for (int i = 0; i < batchSize && message != null; i++) |
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{ |
166 | 0 | message = (MuleEvent)queue.poll(0); |
167 | 0 | if (message != null) |
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{ |
169 | 0 | messages.add(message.getMessage()); |
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} |
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} |
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} |
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175 | 0 | return messages; |
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} |
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protected MuleEvent getFirstMessage() throws Exception |
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{ |
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|
181 | 0 | QueueSession qs = connector.getQueueSession(); |
182 | 0 | Queue queue = qs.getQueue(endpoint.getEndpointURI().getAddress()); |
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|
184 | 0 | return (MuleEvent) queue.poll(connector.getQueueTimeout()); |
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} |
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@Override |
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protected void processMessage(Object msg) throws Exception |
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{ |
190 | 0 | MuleMessage message = (MuleMessage) msg; |
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193 | 0 | MuleMessage newMessage = message.createInboundMessage(); |
194 | 0 | routeMessage(newMessage); |
195 | 0 | } |
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@Override |
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protected PollingReceiverWorker createWork() |
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{ |
203 | 0 | return new ContinuousPollingReceiverWorker(this); |
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} |
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} |