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#ifndef QPID_BROKER_SEMANTICSTATE_H
#define QPID_BROKER_SEMANTICSTATE_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 "Consumer.h"
#include "Deliverable.h"
#include "DeliveryAdapter.h"
#include "DeliveryRecord.h"
#include "DeliveryToken.h"
#include "DtxBuffer.h"
#include "DtxManager.h"
#include "NameGenerator.h"
#include "Prefetch.h"
#include "TxBuffer.h"
#include "qpid/framing/FrameHandler.h"
#include "qpid/framing/SequenceSet.h"
#include "qpid/framing/Uuid.h"
#include "qpid/sys/AggregateOutput.h"
#include "qpid/shared_ptr.h"
#include "AclModule.h"
#include <list>
#include <map>
#include <vector>
#include <boost/intrusive_ptr.hpp>
namespace qpid {
namespace broker {
class SessionContext;
/**
* SemanticState holds the L3 and L4 state of an open session, whether
* attached to a channel or suspended.
*/
class SemanticState : public sys::OutputTask,
private boost::noncopyable
{
class ConsumerImpl : public Consumer, public sys::OutputTask
{
SemanticState* const parent;
const DeliveryToken::shared_ptr token;
const string name;
const Queue::shared_ptr queue;
const bool ackExpected;
const bool nolocal;
const bool acquire;
bool blocked;
bool windowing;
uint32_t msgCredit;
uint32_t byteCredit;
bool checkCredit(boost::intrusive_ptr<Message>& msg);
void allocateCredit(boost::intrusive_ptr<Message>& msg);
public:
ConsumerImpl(SemanticState* parent, DeliveryToken::shared_ptr token,
const string& name, Queue::shared_ptr queue,
bool ack, bool nolocal, bool acquire);
~ConsumerImpl();
OwnershipToken* getSession();
bool deliver(QueuedMessage& msg);
bool filter(boost::intrusive_ptr<Message> msg);
bool accept(boost::intrusive_ptr<Message> msg);
void notify();
void setWindowMode();
void setCreditMode();
void addByteCredit(uint32_t value);
void addMessageCredit(uint32_t value);
void flush();
void stop();
void complete(DeliveryRecord&);
Queue::shared_ptr getQueue() { return queue; }
bool isBlocked() const { return blocked; }
bool hasOutput();
bool doOutput();
};
typedef boost::ptr_map<std::string,ConsumerImpl> ConsumerImplMap;
typedef std::map<std::string, DtxBuffer::shared_ptr> DtxBufferMap;
SessionContext& session;
DeliveryAdapter& deliveryAdapter;
Queue::shared_ptr defaultQueue;
ConsumerImplMap consumers;
uint32_t prefetchSize;
uint16_t prefetchCount;
Prefetch outstanding;
NameGenerator tagGenerator;
std::list<DeliveryRecord> unacked;
TxBuffer::shared_ptr txBuffer;
DtxBuffer::shared_ptr dtxBuffer;
bool dtxSelected;
DtxBufferMap suspendedXids;
framing::SequenceSet accumulatedAck;
boost::shared_ptr<Exchange> cacheExchange;
sys::AggregateOutput outputTasks;
AclModule* acl;
void route(boost::intrusive_ptr<Message> msg, Deliverable& strategy);
void record(const DeliveryRecord& delivery);
bool checkPrefetch(boost::intrusive_ptr<Message>& msg);
void checkDtxTimeout();
ConsumerImpl& find(const std::string& destination);
void complete(DeliveryRecord&);
AckRange findRange(DeliveryId first, DeliveryId last);
void requestDispatch();
void requestDispatch(ConsumerImpl&);
void cancel(ConsumerImpl&);
public:
SemanticState(DeliveryAdapter&, SessionContext&);
~SemanticState();
SessionContext& getSession() { return session; }
/**
* Get named queue, never returns 0.
* @return: named queue
* @exception: ChannelException if no queue of that name is found.
* @exception: ConnectionException if name="" and session has no default.
*/
Queue::shared_ptr getQueue(const std::string& name) const;
uint32_t setPrefetchSize(uint32_t size){ return prefetchSize = size; }
uint16_t setPrefetchCount(uint16_t n){ return prefetchCount = n; }
bool exists(const string& consumerTag);
/**
*@param tagInOut - if empty it is updated with the generated token.
*/
void consume(DeliveryToken::shared_ptr token, string& tagInOut, Queue::shared_ptr queue,
bool nolocal, bool ackRequired, bool acquire, bool exclusive, const framing::FieldTable* = 0);
void cancel(const string& tag);
void setWindowMode(const std::string& destination);
void setCreditMode(const std::string& destination);
void addByteCredit(const std::string& destination, uint32_t value);
void addMessageCredit(const std::string& destination, uint32_t value);
void flush(const std::string& destination);
void stop(const std::string& destination);
bool get(DeliveryToken::shared_ptr token, Queue::shared_ptr queue, bool ackExpected);
void startTx();
void commit(MessageStore* const store);
void rollback();
void selectDtx();
void startDtx(const std::string& xid, DtxManager& mgr, bool join);
void endDtx(const std::string& xid, bool fail);
void suspendDtx(const std::string& xid);
void resumeDtx(const std::string& xid);
void recover(bool requeue);
DeliveryId redeliver(QueuedMessage& msg, DeliveryToken::shared_ptr token);
void acquire(DeliveryId first, DeliveryId last, DeliveryIds& acquired);
void release(DeliveryId first, DeliveryId last, bool setRedelivered);
void reject(DeliveryId first, DeliveryId last);
void handle(boost::intrusive_ptr<Message> msg);
bool hasOutput() { return outputTasks.hasOutput(); }
bool doOutput() { return outputTasks.doOutput(); }
//final 0-10 spec (completed and accepted are distinct):
void completed(DeliveryId deliveryTag, DeliveryId endTag);
void accepted(DeliveryId deliveryTag, DeliveryId endTag);
};
}} // namespace qpid::broker
#endif /*!QPID_BROKER_SEMANTICSTATE_H*/
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