/*
*
* 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.protocol.v0_8;
import java.util.UUID;
import org.apache.qpid.AMQException;
import org.apache.qpid.framing.AMQShortString;
import org.apache.qpid.framing.BasicContentHeaderProperties;
import org.apache.qpid.framing.ContentHeaderBody;
import org.apache.qpid.framing.abstraction.MessagePublishInfo;
import org.apache.qpid.server.message.EnqueueableMessage;
import org.apache.qpid.server.message.MessageReference;
import org.apache.qpid.server.store.MessageCounter;
import org.apache.qpid.server.store.MessageDurability;
import org.apache.qpid.server.store.StoredMessage;
import org.apache.qpid.server.store.TestMemoryMessageStore;
import org.apache.qpid.server.store.Transaction;
import org.apache.qpid.server.store.TransactionLogResource;
import org.apache.qpid.test.utils.QpidTestCase;
/**
* Tests that reference counting works correctly with AMQMessage and the message store
*/
public class ReferenceCountingTest extends QpidTestCase
{
private TestMemoryMessageStore _store;
protected void setUp() throws Exception
{
_store = new TestMemoryMessageStore();
}
/**
* Check that when the reference count is decremented the message removes itself from the store
*/
public void testMessageGetsRemoved() throws AMQException
{
ContentHeaderBody chb = createPersistentContentHeader();
MessagePublishInfo info = new MessagePublishInfo()
{
public AMQShortString getExchange()
{
return null;
}
public void setExchange(AMQShortString exchange)
{
//To change body of implemented methods use File | Settings | File Templates.
}
public boolean isImmediate()
{
return false;
}
public boolean isMandatory()
{
return false;
}
public AMQShortString getRoutingKey()
{
return null;
}
};
final MessageMetaData mmd = new MessageMetaData(info, chb);
StoredMessage storedMessage = _store.addMessage(mmd);
Transaction txn = _store.newTransaction();
txn.enqueueMessage(createTransactionLogResource("dummyQ"), createEnqueueableMessage(storedMessage));
txn.commitTran();
AMQMessage message = new AMQMessage(storedMessage);
MessageReference ref = message.newReference();
assertEquals(1, getStoreMessageCount());
ref.release();
assertEquals(0, getStoreMessageCount());
}
private int getStoreMessageCount()
{
MessageCounter counter = new MessageCounter();
_store.visitMessages(counter);
return counter.getCount();
}
private ContentHeaderBody createPersistentContentHeader()
{
ContentHeaderBody chb = new ContentHeaderBody();
BasicContentHeaderProperties bchp = new BasicContentHeaderProperties();
bchp.setDeliveryMode((byte)2);
chb.setProperties(bchp);
return chb;
}
public void testMessageRemains() throws AMQException
{
MessagePublishInfo info = new MessagePublishInfo()
{
public AMQShortString getExchange()
{
return null;
}
public void setExchange(AMQShortString exchange)
{
//To change body of implemented methods use File | Settings | File Templates.
}
public boolean isImmediate()
{
return false;
}
public boolean isMandatory()
{
return false;
}
public AMQShortString getRoutingKey()
{
return null;
}
};
final ContentHeaderBody chb = createPersistentContentHeader();
final MessageMetaData mmd = new MessageMetaData(info, chb);
StoredMessage storedMessage = _store.addMessage(mmd);
Transaction txn = _store.newTransaction();
txn.enqueueMessage(createTransactionLogResource("dummyQ"), createEnqueueableMessage(storedMessage));
txn.commitTran();
AMQMessage message = new AMQMessage(storedMessage);
MessageReference ref = message.newReference();
assertEquals(1, getStoreMessageCount());
MessageReference ref2 = message.newReference();
ref.release();
assertEquals(1, getStoreMessageCount());
}
private TransactionLogResource createTransactionLogResource(final String queueName)
{
return new TransactionLogResource()
{
@Override
public String getName()
{
return queueName;
}
@Override
public UUID getId()
{
return UUID.nameUUIDFromBytes(queueName.getBytes());
}
@Override
public MessageDurability getMessageDurability()
{
return MessageDurability.DEFAULT;
}
};
}
private EnqueueableMessage createEnqueueableMessage(final StoredMessage storedMessage)
{
return new EnqueueableMessage()
{
@Override
public long getMessageNumber()
{
return storedMessage.getMessageNumber();
}
@Override
public boolean isPersistent()
{
return true;
}
@Override
public StoredMessage getStoredMessage()
{
return storedMessage;
}
};
}
public static junit.framework.Test suite()
{
return new junit.framework.TestSuite(ReferenceCountingTest.class);
}
}