content: /*
   * 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.activemq;
  
  import javax.jms.Message;
  import javax.jms.MessageConsumer;
  import javax.jms.MessageProducer;
  import javax.jms.QueueBrowser;
  import javax.jms.Session;
  import javax.jms.TextMessage;
  import java.util.Enumeration;
  
  import junit.framework.Test;
  
  import org.apache.activemq.broker.BrokerService;
  import org.apache.activemq.broker.region.policy.PolicyEntry;
  import org.apache.activemq.broker.region.policy.PolicyMap;
  import org.apache.activemq.command.ActiveMQQueue;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class JmsQueueBrowserTest extends JmsTestSupport {
  
     private static final Logger LOG = LoggerFactory.getLogger(ActiveMQXAConnectionFactoryTest.class);
     public boolean isUseCache = false;
  
     public static Test suite() throws Exception {
        return suite(JmsQueueBrowserTest.class);
     }
  
     /**
      * Tests the queue browser. Browses the messages then the consumer tries to receive them. The messages should still
      * be in the queue even when it was browsed.
      */
     public void testReceiveBrowseReceive() throws Exception {
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        ActiveMQQueue destination = new ActiveMQQueue("TEST");
        MessageProducer producer = session.createProducer(destination);
        MessageConsumer consumer = session.createConsumer(destination);
        connection.start();
  
        Message[] outbound = new Message[]{session.createTextMessage("First Message"), session.createTextMessage("Second Message"), session.createTextMessage("Third Message")};
  
        // lets consume any outstanding messages from previous test runs
        while (consumer.receive(1000) != null) {
        }
  
        producer.send(outbound[0]);
        producer.send(outbound[1]);
        producer.send(outbound[2]);
  
        // Get the first.
        assertEquals(outbound[0], consumer.receive(1000));
        consumer.close();
  
        QueueBrowser browser = session.createBrowser(destination);
        Enumeration<?> enumeration = browser.getEnumeration();
  
        // browse the second
        assertTrue("should have received the second message", enumeration.hasMoreElements());
        assertEquals(outbound[1], enumeration.nextElement());
  
        // browse the third.
        assertTrue("Should have received the third message", enumeration.hasMoreElements());
        assertEquals(outbound[2], enumeration.nextElement());
  
        // There should be no more.
        boolean tooMany = false;
        while (enumeration.hasMoreElements()) {
           LOG.info("Got extra message: " + ((TextMessage) enumeration.nextElement()).getText());
           tooMany = true;
        }
        assertFalse(tooMany);
        browser.close();
  
        // Re-open the consumer.
        consumer = session.createConsumer(destination);
        // Receive the second.
        assertEquals(outbound[1], consumer.receive(1000));
        // Receive the third.
        assertEquals(outbound[2], consumer.receive(1000));
        consumer.close();
     }
  
     public void initCombosForTestBatchSendBrowseReceive() {
        addCombinationValues("isUseCache", new Boolean[]{Boolean.TRUE, Boolean.FALSE});
     }
  
  
     public void testLargeNumberOfMessages() throws Exception {
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        ActiveMQQueue destination = new ActiveMQQueue("TEST");
        connection.start();
  
        MessageProducer producer = session.createProducer(destination);
  
        int numberOfMessages = 4096;
  
        for (int i = 0; i < numberOfMessages; i++) {
           producer.send(session.createTextMessage("Message: " + i));
        }
  
        QueueBrowser browser = session.createBrowser(destination);
        Enumeration<?> enumeration = browser.getEnumeration();
  
        assertTrue(enumeration.hasMoreElements());
  
        int numberBrowsed = 0;
  
        while (enumeration.hasMoreElements()) {
           Message browsed = (Message) enumeration.nextElement();
  
           if (LOG.isDebugEnabled()) {
              LOG.debug("Browsed Message [{}]", browsed.getJMSMessageID());
           }
  
           numberBrowsed++;
        }
  
        System.out.println("Number browsed:  " + numberBrowsed);
        assertEquals(numberOfMessages, numberBrowsed);
        browser.close();
        producer.close();
     }
  
     @Override
     protected BrokerService createBroker() throws Exception {
        BrokerService brokerService = super.createBroker();
        PolicyMap policyMap = new PolicyMap();
        PolicyEntry policyEntry = new PolicyEntry();
        policyEntry.setUseCache(isUseCache);
        policyEntry.setMaxBrowsePageSize(4096);
        policyMap.setDefaultEntry(policyEntry);
        brokerService.setDestinationPolicy(policyMap);
        return brokerService;
     }
  }
  