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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.txn;
import org.apache.commons.configuration.Configuration;
import org.apache.commons.lang.NotImplementedException;
import org.apache.qpid.AMQStoreException;
import org.apache.qpid.server.logging.LogSubject;
import org.apache.qpid.server.store.TransactionLog;
import org.apache.qpid.server.store.TransactionLogRecoveryHandler;
import org.apache.qpid.server.store.TransactionLogResource;
import org.apache.qpid.server.store.TransactionLog.StoreFuture;
import org.apache.qpid.server.store.TransactionLog.Transaction;
/**
* Mock implementation of a (Store) Transaction allow its state to be observed.
* Also provide a factory method to produce TestTransactionLog objects suitable
* for unit test use.
*
*/
class MockStoreTransaction implements Transaction
{
enum TransactionState {NOT_STARTED, STARTED, COMMITTED, ABORTED};
private TransactionState _state = TransactionState.NOT_STARTED;
private int _numberOfEnqueuedMessages = 0;
private int _numberOfDequeuedMessages = 0;
private boolean _throwExceptionOnQueueOp;
public MockStoreTransaction(boolean throwExceptionOnQueueOp)
{
_throwExceptionOnQueueOp = throwExceptionOnQueueOp;
}
public void setState(TransactionState state)
{
_state = state;
}
public TransactionState getState()
{
return _state;
}
@Override
public void enqueueMessage(TransactionLogResource queue, Long messageId) throws AMQStoreException
{
if (_throwExceptionOnQueueOp)
{
throw new AMQStoreException("Mocked exception");
}
_numberOfEnqueuedMessages++;
}
public int getNumberOfDequeuedMessages()
{
return _numberOfDequeuedMessages;
}
public int getNumberOfEnqueuedMessages()
{
return _numberOfEnqueuedMessages;
}
@Override
public void dequeueMessage(TransactionLogResource queue, Long messageId) throws AMQStoreException
{
if (_throwExceptionOnQueueOp)
{
throw new AMQStoreException("Mocked exception");
}
_numberOfDequeuedMessages++;
}
@Override
public void commitTran() throws AMQStoreException
{
_state = TransactionState.COMMITTED;
}
@Override
public StoreFuture commitTranAsync() throws AMQStoreException
{
throw new NotImplementedException();
}
@Override
public void abortTran() throws AMQStoreException
{
_state = TransactionState.ABORTED;
}
public static TransactionLog createTestTransactionLog(final MockStoreTransaction storeTransaction)
{
return new TransactionLog()
{
@Override
public void configureTransactionLog(String name, TransactionLogRecoveryHandler recoveryHandler,
Configuration storeConfiguration, LogSubject logSubject) throws Exception
{
}
@Override
public Transaction newTransaction()
{
storeTransaction.setState(TransactionState.STARTED);
return storeTransaction;
}
};
}
}
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