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#ifndef QPID_BROKER_DELIVERYRECORD_H
#define QPID_BROKER_DELIVERYRECORD_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 <algorithm>
#include <deque>
#include <vector>
#include <ostream>
#include "qpid/framing/SequenceSet.h"
#include "qpid/broker/BrokerImportExport.h"
#include "qpid/broker/QueuedMessage.h"
#include "qpid/broker/DeliveryId.h"
#include "qpid/broker/Message.h"
namespace qpid {
namespace broker {
class TransactionContext;
class SemanticState;
struct AckRange;
/**
* Record of a delivery for which an ack is outstanding.
*/
class DeliveryRecord
{
QueuedMessage msg;
mutable boost::shared_ptr<Queue> queue;
std::string tag;
DeliveryId id;
bool acquired : 1;
bool acceptExpected : 1;
bool cancelled : 1;
bool completed : 1;
bool ended : 1;
bool windowing : 1;
/**
* Record required credit on construction as the pointer to the
* message may be reset once we no longer need to deliver it
* (e.g. when it is accepted), but we will still need to be able
* to reallocate credit when it is completed (which could happen
* after that).
*/
uint32_t credit;
public:
QPID_BROKER_EXTERN DeliveryRecord(const QueuedMessage& msg,
const boost::shared_ptr<Queue>& queue,
const std::string& tag,
bool acquired,
bool accepted,
bool windowing,
uint32_t credit=0 // Only used if msg is empty.
);
bool coveredBy(const framing::SequenceSet* const range) const { return range->contains(id); }
void dequeue(TransactionContext* ctxt = 0) const;
void requeue() const;
void release(bool setRedelivered);
void reject();
void cancel(const std::string& tag);
void redeliver(SemanticState* const);
void acquire(DeliveryIds& results);
void complete();
bool accept(TransactionContext* ctxt); // Returns isRedundant()
bool setEnded(); // Returns isRedundant()
void committed() const;
bool isAcquired() const { return acquired; }
bool isComplete() const { return completed; }
bool isRedundant() const { return ended && (!windowing || completed); }
bool isCancelled() const { return cancelled; }
bool isAccepted() const { return !acceptExpected; }
bool isEnded() const { return ended; }
bool isWindowing() const { return windowing; }
uint32_t getCredit() const;
const std::string& getTag() const { return tag; }
void deliver(framing::FrameHandler& h, DeliveryId deliveryId, uint16_t framesize);
void setId(DeliveryId _id) { id = _id; }
typedef std::deque<DeliveryRecord> DeliveryRecords;
static AckRange findRange(DeliveryRecords& records, DeliveryId first, DeliveryId last);
const QueuedMessage& getMessage() const { return msg; }
framing::SequenceNumber getId() const { return id; }
boost::shared_ptr<Queue> getQueue() const { return queue; }
friend std::ostream& operator<<(std::ostream&, const DeliveryRecord&);
};
inline bool operator<(const DeliveryRecord& a, const DeliveryRecord& b) { return a.getId() < b.getId(); }
inline bool operator<(const framing::SequenceNumber& a, const DeliveryRecord& b) { return a < b.getId(); }
inline bool operator<(const DeliveryRecord& a, const framing::SequenceNumber& b) { return a.getId() < b; }
struct AcquireFunctor
{
DeliveryIds& results;
AcquireFunctor(DeliveryIds& _results) : results(_results) {}
void operator()(DeliveryRecord& record)
{
record.acquire(results);
}
};
typedef DeliveryRecord::DeliveryRecords DeliveryRecords;
struct AckRange
{
DeliveryRecords::iterator start;
DeliveryRecords::iterator end;
AckRange(DeliveryRecords::iterator _start, DeliveryRecords::iterator _end) : start(_start), end(_end) {}
};
}
}
#endif /*!QPID_BROKER_DELIVERYRECORD_H*/
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