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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.subscription;
import org.apache.qpid.AMQException;
import org.apache.qpid.common.AMQPFilterTypes;
import org.apache.qpid.exchange.ExchangeDefaults;
import org.apache.qpid.framing.AMQShortString;
import org.apache.qpid.framing.FieldTable;
import org.apache.qpid.server.AMQChannel;
import org.apache.qpid.server.exchange.Exchange;
import org.apache.qpid.server.protocol.InternalTestProtocolSession;
import org.apache.qpid.server.queue.AMQQueue;
import org.apache.qpid.server.queue.SimpleAMQQueue;
import org.apache.qpid.server.store.MessageStore;
import org.apache.qpid.server.store.TestableMemoryMessageStore;
import org.apache.qpid.server.util.BrokerTestHelper;
import org.apache.qpid.server.virtualhost.VirtualHost;
import org.apache.qpid.test.utils.QpidTestCase;
import java.util.List;
public class QueueBrowserUsesNoAckTest extends QpidTestCase
{
private AMQChannel _channel;
private SimpleAMQQueue _queue;
private MessageStore _messageStore;
private String _queueName;
@Override
public void setUp() throws Exception
{
super.setUp();
BrokerTestHelper.setUp();
_channel = BrokerTestHelper.createChannel();
VirtualHost virtualHost = _channel.getVirtualHost();
_queueName = getTestName();
_queue = BrokerTestHelper.createQueue(_queueName, virtualHost);
_messageStore = virtualHost.getMessageStore();
Exchange defaultExchange = virtualHost.getExchangeRegistry().getDefaultExchange();
virtualHost.getBindingFactory().addBinding(_queueName, _queue, defaultExchange, null);
}
@Override
public void tearDown() throws Exception
{
try
{
if (_channel != null)
{
_channel.getVirtualHost().close();
}
}
finally
{
BrokerTestHelper.tearDown();
super.tearDown();
}
}
private AMQChannel getChannel()
{
return _channel;
}
private InternalTestProtocolSession getSession()
{
return (InternalTestProtocolSession)_channel.getProtocolSession();
}
private SimpleAMQQueue getQueue()
{
return _queue;
}
public void testQueueBrowserUsesNoAck() throws AMQException
{
int sendMessageCount = 2;
int prefetch = 1;
//Check store is empty
checkStoreContents(0);
//Send required messsages to the queue
BrokerTestHelper.publishMessages(getChannel(), sendMessageCount, _queueName, ExchangeDefaults.DEFAULT_EXCHANGE_NAME.asString());
//Ensure they are stored
checkStoreContents(sendMessageCount);
//Check that there are no unacked messages
assertEquals("Channel should have no unacked msgs ", 0,
getChannel().getUnacknowledgedMessageMap().size());
//Set the prefetch on the session to be less than the sent messages
getChannel().setCredit(0, prefetch);
//browse the queue
AMQShortString browser = browse(getChannel(), getQueue());
getQueue().deliverAsync();
//Wait for messages to fill the prefetch
getSession().awaitDelivery(prefetch);
//Get those messages
List<InternalTestProtocolSession.DeliveryPair> messages =
getSession().getDelivers(getChannel().getChannelId(), browser,
prefetch);
//Ensure we recevied the prefetched messages
assertEquals(prefetch, messages.size());
//Check the process didn't suspend the subscription as this would
// indicate we are using the prefetch credit. i.e. using acks not No-Ack
assertTrue("The subscription has been suspended",
!getChannel().getSubscription(browser).getState()
.equals(Subscription.State.SUSPENDED));
}
private void checkStoreContents(int messageCount)
{
assertEquals("Message header count incorrect in the MetaDataMap", messageCount, ((TestableMemoryMessageStore) _messageStore).getMessageCount());
}
private AMQShortString browse(AMQChannel channel, AMQQueue queue) throws AMQException
{
FieldTable filters = new FieldTable();
filters.put(AMQPFilterTypes.NO_CONSUME.getValue(), true);
return channel.subscribeToQueue(null, queue, true, filters, false, true);
}
}
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