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+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+package org.apache.qpid.server.queue;
+
+import org.apache.qpid.test.utils.QpidTestCase;
+import org.apache.qpid.client.AMQConnection;
+
+import javax.jms.Connection;
+import javax.jms.JMSException;
+import javax.jms.Message;
+import javax.jms.MessageConsumer;
+import javax.jms.MessageListener;
+import javax.jms.Queue;
+import javax.jms.Session;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * Test DeapQueueConsumerWithSelector
+ * Summary:
+ * Prior to M4 the broker had a different queue model which pre-processed the
+ * messages on the queue for any connecting subscription that had a selector.
+ *
+ * If the queue had a lot of data then this may take a long time to process
+ * to such an extent that the subscription creation may time out. During this
+ * pre-process phase the virtualhost would be come unresposive.
+ *
+ * Our solution was to allow the timeout to be adjusted QPID-1119, which allowed
+ * the subscription to connect but did not address the unresponsiveness.
+ *
+ * The new queue model introduced in M4 resolved this.
+ *
+ * This test is to validate that the new queueing model does indeed remove the
+ * long pre-processing phase and allow immediate subscription so that there is
+ * no unresponsive period.
+ *
+ * Test Strategy:
+ *
+ * Add 100k messages to the queue with a numberic header property that will
+ * allow later subscribers to use as in a selector.
+ *
+ * Connect the subscriber and time how long it takes to connect.
+ *
+ * Finally consume all the messages from the queue to clean up.
+ */
+public class DeepQueueConsumeWithSelector extends QpidTestCase implements MessageListener
+{
+
+ private static final int MESSAGE_COUNT = 10000;
+ private static final int BATCH_SIZE = MESSAGE_COUNT / 10;
+
+ private CountDownLatch _receviedLatch = new CountDownLatch(MESSAGE_COUNT);
+
+ protected long SYNC_WRITE_TIMEOUT = 120000L;
+
+
+ public void setUp() throws Exception
+ {
+ //Set the syncWrite timeout to be just larger than the delay on the commitTran.
+ setSystemProperty("amqj.default_syncwrite_timeout", String.valueOf(SYNC_WRITE_TIMEOUT));
+
+ super.setUp();
+ }
+
+ public void test() throws Exception
+ {
+ // Create Connection
+ Connection connection = getConnection();
+ Session session = ((AMQConnection)connection).createSession(true, Session.SESSION_TRANSACTED, 100000);
+
+ Queue queue = (Queue) getInitialContext().lookup("queue");
+
+ // Validate that the destination exists
+ session.createConsumer(queue).close();
+
+ // Send Messages
+ sendMessage(session, queue, MESSAGE_COUNT, BATCH_SIZE);
+
+ session.close();
+
+ session = ((AMQConnection) connection).createSession(false, Session.AUTO_ACKNOWLEDGE);//, 100000);
+
+
+ // Setup Selector to perform a few calculations which will slow it down
+ String selector = "((\"" + INDEX + "\" % 1) = 0) AND ('" + INDEX + "' IS NOT NULL) AND ('" + INDEX + "' <> -1)";
+
+ // Setup timing
+ long start = System.nanoTime();
+
+ System.err.println("Create Consumer");
+ // Connect Consumer
+ MessageConsumer consumer = session.createConsumer(queue, selector);
+ consumer.setMessageListener(this);
+
+ // Validate timing details
+ long end = System.nanoTime();
+
+ System.err.println("Subscription time took:" + (end - start));
+
+ // Consume Messages
+ connection.start();
+
+
+
+ assertTrue("Messages took to long to be received :"+_receviedLatch.getCount(),
+ _receviedLatch.await(SYNC_WRITE_TIMEOUT, TimeUnit.MILLISECONDS ));
+
+ }
+
+ @Override
+ public Message createNextMessage(Session session, int msgCount) throws JMSException
+ {
+ Message message = super.createNextMessage(session,msgCount);
+
+ if ((msgCount % BATCH_SIZE) == 0 )
+ {
+ System.err.println("Sent:"+msgCount);
+ }
+
+ return message;
+ }
+
+ public void onMessage(Message message)
+ {
+ _receviedLatch.countDown();
+ int msgCount = 0;
+ try
+ {
+ msgCount = message.getIntProperty(INDEX);
+ }
+ catch (JMSException e)
+ {
+ //ignore
+ }
+ if ((msgCount % BATCH_SIZE) == 0 )
+ {
+ System.err.println("Received:"+msgCount);
+ }
+
+ }
+}