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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.store.jdbc;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.atomic.AtomicBoolean;
import org.apache.qpid.server.model.ConfiguredObject;
import org.apache.qpid.server.store.StoreException;
import org.apache.qpid.server.util.FutureResult;
import org.apache.qpid.server.store.Transaction;
public abstract class GenericAbstractJDBCMessageStore extends org.apache.qpid.server.store.AbstractJDBCMessageStore
{
private final AtomicBoolean _messageStoreOpen = new AtomicBoolean(false);
private final List<RecordedJDBCTransaction> _transactions = new CopyOnWriteArrayList<>();
private ConfiguredObject<?> _parent;
@Override
public final void openMessageStore(ConfiguredObject<?> parent)
{
if (_messageStoreOpen.compareAndSet(false, true))
{
_parent = parent;
doOpen(parent);
createOrOpenMessageStoreDatabase();
setMaximumMessageId();
}
}
protected abstract void doOpen(final ConfiguredObject<?> parent)
throws StoreException;
@Override
public final void upgradeStoreStructure() throws StoreException
{
checkMessageStoreOpen();
upgrade(_parent);
}
@Override
public final void closeMessageStore()
{
if (_messageStoreOpen.compareAndSet(true, false))
{
try
{
while(!_transactions.isEmpty())
{
RecordedJDBCTransaction txn = _transactions.get(0);
txn.abortTran();
}
}
finally
{
doClose();
}
}
}
protected abstract void doClose();
protected boolean isMessageStoreOpen()
{
return _messageStoreOpen.get();
}
@Override
protected void checkMessageStoreOpen()
{
if (!_messageStoreOpen.get())
{
throw new IllegalStateException("Message store is not open");
}
}
@Override
protected void storedSizeChange(int contentSize)
{
}
@Override
public Transaction newTransaction()
{
return new RecordedJDBCTransaction();
}
private class RecordedJDBCTransaction extends JDBCTransaction
{
private RecordedJDBCTransaction()
{
super();
GenericAbstractJDBCMessageStore.this._transactions.add(this);
}
@Override
public void commitTran()
{
try
{
super.commitTran();
}
finally
{
GenericAbstractJDBCMessageStore.this._transactions.remove(this);
}
}
@Override
public FutureResult commitTranAsync()
{
try
{
return super.commitTranAsync();
}
finally
{
GenericAbstractJDBCMessageStore.this._transactions.remove(this);
}
}
@Override
public void abortTran()
{
try
{
super.abortTran();
}
finally
{
GenericAbstractJDBCMessageStore.this._transactions.remove(this);
}
}
}
}
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