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#ifndef _broker_PersistableMessage_h
#define _broker_PersistableMessage_h
/*
*
* 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.
*
*/
#include <string>
#include <boost/shared_ptr.hpp>
#include "Persistable.h"
#include "qpid/framing/amqp_types.h"
namespace qpid {
namespace broker {
/**
* The interface messages must expose to the MessageStore in order to
* be persistable.
*/
class PersistableMessage : public Persistable
{
/**
* Needs to be set false on Message construction, then
* set once the broker has taken responsibility for the
* message. For transient, once enqueued, for durable, once
* stored.
*/
bool enqueueCompleted;
/**
* Counts the number of times the message has been processed
* async - thus when it == 0 the broker knows it has ownership
* -> an async store can increment this counter if it writes a
* copy to each queue, and case use this counter to know when all
* the write are complete
*/
int asyncCounter;
/**
* Needs to be set false on Message construction, then
* set once the dequeueis complete, it gets set
* For transient, once dequeued, for durable, once
* dequeue record has been stored.
*/
bool dequeueCompleted;
public:
typedef boost::shared_ptr<PersistableMessage> shared_ptr;
/**
* @returns the size of the headers when encoded
*/
virtual uint32_t encodedHeaderSize() const = 0;
virtual ~PersistableMessage() {};
PersistableMessage():
enqueueCompleted(false),
asyncCounter(0),
dequeueCompleted(false){};
inline bool isEnqueueComplete() {return enqueueCompleted;};
inline void enqueueComplete() {
if (asyncCounter<=1) {
asyncCounter =0;
enqueueCompleted = true;
}else{
asyncCounter--;
}
};
inline void enqueueAsync() {asyncCounter++;};
inline bool isDequeueComplete() {return dequeueCompleted;};
inline void dequeueComplete() {dequeueCompleted = true;};
};
}}
#endif
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