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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.
*
*/
#ifndef _TxPublish_
#define _TxPublish_
#include "qpid/broker/BrokerImportExport.h"
#include "qpid/broker/Deliverable.h"
#include "qpid/broker/Message.h"
#include "qpid/broker/MessageStore.h"
#include "qpid/broker/TxOp.h"
#include <algorithm>
#include <functional>
#include <list>
#include <boost/intrusive_ptr.hpp>
namespace qpid {
namespace broker {
/**
* Defines the behaviour for publish operations on a
* transactional channel. Messages are routed through
* exchanges when received but are not at that stage delivered
* to the matching queues, rather the queues are held in an
* instance of this class. On prepare() the message is marked
* enqueued to the relevant queues in the MessagesStore. On
* commit() the messages will be passed to the queue for
* dispatch or to be added to the in-memory queue.
*/
class QPID_BROKER_CLASS_EXTERN TxPublish : public TxOp, public Deliverable{
class Commit{
boost::intrusive_ptr<Message>& msg;
public:
Commit(boost::intrusive_ptr<Message>& msg);
void operator()(const boost::shared_ptr<Queue>& queue);
};
class Rollback{
boost::intrusive_ptr<Message>& msg;
public:
Rollback(boost::intrusive_ptr<Message>& msg);
void operator()(const boost::shared_ptr<Queue>& queue);
};
boost::intrusive_ptr<Message> msg;
std::list<boost::shared_ptr<Queue> > queues;
std::list<boost::shared_ptr<Queue> > prepared;
void prepare(TransactionContext* ctxt, boost::shared_ptr<Queue>);
public:
QPID_BROKER_EXTERN TxPublish(boost::intrusive_ptr<Message> msg);
QPID_BROKER_EXTERN virtual bool prepare(TransactionContext* ctxt) throw();
QPID_BROKER_EXTERN virtual void commit() throw();
QPID_BROKER_EXTERN virtual void rollback() throw();
virtual Message& getMessage() { return *msg; };
QPID_BROKER_EXTERN virtual void deliverTo(const boost::shared_ptr<Queue>& queue);
virtual ~TxPublish(){}
virtual void accept(TxOpConstVisitor& visitor) const { visitor(*this); }
QPID_BROKER_EXTERN uint64_t contentSize();
boost::intrusive_ptr<Message> getMessage() const { return msg; }
const std::list<boost::shared_ptr<Queue> > getQueues() const { return queues; }
};
}
}
#endif
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