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#ifndef QPID_CLIENT_AMQP0_10_RECEIVERIMPL_H
#define QPID_CLIENT_AMQP0_10_RECEIVERIMPL_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 "qpid/messaging/Address.h"
#include "qpid/messaging/Message.h"
#include "qpid/messaging/ReceiverImpl.h"
#include "qpid/client/AsyncSession.h"
#include "qpid/client/amqp0_10/SessionImpl.h"
#include "qpid/messaging/Duration.h"
#include "qpid/sys/Mutex.h"
#include <boost/intrusive_ptr.hpp>
#include <memory>
namespace qpid {
namespace client {
namespace amqp0_10 {
class AddressResolution;
class MessageSource;
/**
* A receiver implementation based on an AMQP 0-10 subscription.
*/
class ReceiverImpl : public qpid::messaging::ReceiverImpl
{
public:
enum State {UNRESOLVED, STOPPED, STARTED, CANCELLED};
ReceiverImpl(SessionImpl& parent, const std::string& name,
const qpid::messaging::Address& address);
void init(qpid::client::AsyncSession session, AddressResolution& resolver);
bool get(qpid::messaging::Message& message, qpid::messaging::Duration timeout);
qpid::messaging::Message get(qpid::messaging::Duration timeout);
bool fetch(qpid::messaging::Message& message, qpid::messaging::Duration timeout);
qpid::messaging::Message fetch(qpid::messaging::Duration timeout);
void close();
void start();
void stop();
const std::string& getName() const;
void setCapacity(uint32_t);
uint32_t getCapacity();
uint32_t getAvailable();
uint32_t getUnsettled();
void received(qpid::messaging::Message& message);
qpid::messaging::Session getSession() const;
bool isClosed() const;
private:
mutable sys::Mutex lock;
boost::intrusive_ptr<SessionImpl> parent;
const std::string destination;
const qpid::messaging::Address address;
const uint32_t byteCredit;
State state;
std::auto_ptr<MessageSource> source;
uint32_t capacity;
qpid::client::AsyncSession session;
qpid::messaging::MessageListener* listener;
uint32_t window;
void startFlow(const sys::Mutex::ScopedLock&); // Dummy param, call with lock held
//implementation of public facing methods
bool fetchImpl(qpid::messaging::Message& message, qpid::messaging::Duration timeout);
bool getImpl(qpid::messaging::Message& message, qpid::messaging::Duration timeout);
void closeImpl();
void setCapacityImpl(uint32_t);
//functors for public facing methods.
struct Command
{
ReceiverImpl& impl;
Command(ReceiverImpl& i) : impl(i) {}
};
struct Get : Command
{
qpid::messaging::Message& message;
qpid::messaging::Duration timeout;
bool result;
Get(ReceiverImpl& i, qpid::messaging::Message& m, qpid::messaging::Duration t) :
Command(i), message(m), timeout(t), result(false) {}
void operator()() { result = impl.getImpl(message, timeout); }
};
struct Fetch : Command
{
qpid::messaging::Message& message;
qpid::messaging::Duration timeout;
bool result;
Fetch(ReceiverImpl& i, qpid::messaging::Message& m, qpid::messaging::Duration t) :
Command(i), message(m), timeout(t), result(false) {}
void operator()() { result = impl.fetchImpl(message, timeout); }
};
struct Close : Command
{
Close(ReceiverImpl& i) : Command(i) {}
void operator()() { impl.closeImpl(); }
};
struct SetCapacity : Command
{
uint32_t capacity;
SetCapacity(ReceiverImpl& i, uint32_t c) : Command(i), capacity(c) {}
void operator()() { impl.setCapacityImpl(capacity); }
};
//helper templates for some common patterns
template <class F> void execute()
{
F f(*this);
parent->execute(f);
}
template <class F, class P> void execute1(P p)
{
F f(*this, p);
parent->execute(f);
}
};
}}} // namespace qpid::client::amqp0_10
#endif /*!QPID_CLIENT_AMQP0_10_RECEIVERIMPL_H*/
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