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/*
*
* Copyright (c) 2006 The Apache Software Foundation
*
* Licensed 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 _Channel_
#define _Channel_
#include <algorithm>
#include <map>
#include "AMQContentBody.h"
#include "AMQHeaderBody.h"
#include "BasicPublishBody.h"
#include "Binding.h"
#include "Consumer.h"
#include "Message.h"
#include "MonitorImpl.h"
#include "NameGenerator.h"
#include "OutputHandler.h"
#include "Queue.h"
namespace qpid {
namespace broker {
class Channel{
private:
class ConsumerImpl : public virtual Consumer{
Channel* parent;
string tag;
Queue::shared_ptr queue;
ConnectionToken* const connection;
const bool ackExpected;
public:
ConsumerImpl(Channel* parent, string& tag, Queue::shared_ptr queue, ConnectionToken* const connection, bool ack);
virtual bool deliver(Message::shared_ptr& msg);
void cancel();
};
typedef std::map<string,ConsumerImpl*>::iterator consumer_iterator;
struct AckRecord{
Message::shared_ptr msg;
Queue::shared_ptr queue;
string consumerTag;
u_int64_t deliveryTag;
AckRecord(Message::shared_ptr _msg, Queue::shared_ptr _queue,
string _consumerTag, u_int64_t _deliveryTag) : msg(_msg),
queue(_queue),
consumerTag(_consumerTag),
deliveryTag(_deliveryTag){}
};
typedef std::vector<AckRecord>::iterator ack_iterator;
class MatchAck{
const u_int64_t tag;
public:
MatchAck(u_int64_t tag);
bool operator()(AckRecord& record) const;
};
class Requeue{
public:
void operator()(AckRecord& record) const;
};
class Redeliver{
Channel* const channel;
public:
Redeliver(Channel* const channel);
void operator()(AckRecord& record) const;
};
const int id;
qpid::framing::OutputHandler* out;
u_int64_t deliveryTag;
Queue::shared_ptr defaultQueue;
bool transactional;
std::map<string, ConsumerImpl*> consumers;
u_int32_t prefetchSize;
u_int16_t prefetchCount;
u_int32_t framesize;
Message::shared_ptr message;
NameGenerator tagGenerator;
std::vector<AckRecord> unacknowledged;
qpid::concurrent::MonitorImpl deliveryLock;
void deliver(Message::shared_ptr& msg, string& tag, Queue::shared_ptr& queue, bool ackExpected);
void publish(ExchangeRegistry* exchanges);
public:
Channel(qpid::framing::OutputHandler* out, int id, u_int32_t framesize);
~Channel();
inline void setDefaultQueue(Queue::shared_ptr queue){ defaultQueue = queue; }
inline Queue::shared_ptr getDefaultQueue(){ return defaultQueue; }
inline u_int32_t setPrefetchSize(u_int32_t size){ prefetchSize = size; }
inline u_int16_t setPrefetchCount(u_int16_t count){ prefetchCount = count; }
void handlePublish(Message* msg);
void handleHeader(qpid::framing::AMQHeaderBody::shared_ptr header, ExchangeRegistry* exchanges);
void handleContent(qpid::framing::AMQContentBody::shared_ptr content, ExchangeRegistry* exchanges);
bool exists(string& consumerTag);
void consume(string& tag, Queue::shared_ptr queue, bool acks, bool exclusive, ConnectionToken* const connection = 0);
void cancel(string& tag);
void begin();
void close();
void commit();
void rollback();
void ack(u_int64_t deliveryTag, bool multiple);
void recover(bool requeue);
};
}
}
#endif
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