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/*
*
* 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.
*
*/
#ifndef _Subscription_
#define _Subscription_
#include "SubscriptionManager.h"
#include <qpid/client/Dispatcher.h>
#include <qpid/client/Session.h>
#include <qpid/client/MessageListener.h>
#include <qpid/framing/Uuid.h>
#include <set>
#include <sstream>
namespace qpid {
namespace client {
SubscriptionManager::SubscriptionManager(const Session& s)
: dispatcher(s), session(s),
flowControl(UNLIMITED, UNLIMITED, false),
acceptMode(0), acquireMode(0),
autoStop(true)
{}
void SubscriptionManager::subscribeInternal(
const std::string& q, const std::string& dest, const FlowControl& fc)
{
session.messageSubscribe(
arg::queue=q, arg::destination=dest,
arg::acceptMode=acceptMode, arg::acquireMode=acquireMode);
if (fc.messages || fc.bytes) // No need to set if all 0.
setFlowControl(dest, fc);
}
void SubscriptionManager::subscribe(
MessageListener& listener, const std::string& q, const std::string& d)
{
subscribe(listener, q, getFlowControl(), d);
}
void SubscriptionManager::subscribe(
MessageListener& listener, const std::string& q, const FlowControl& fc, const std::string& d)
{
std::string dest=d.empty() ? q:d;
dispatcher.listen(dest, &listener, autoAck);
return subscribeInternal(q, dest, fc);
}
void SubscriptionManager::subscribe(
LocalQueue& lq, const std::string& q, const std::string& d)
{
subscribe(lq, q, getFlowControl(), d);
}
void SubscriptionManager::subscribe(
LocalQueue& lq, const std::string& q, const FlowControl& fc, const std::string& d)
{
std::string dest=d.empty() ? q:d;
lq.session=session;
lq.queue=session.getExecution().getDemux().add(dest, ByTransferDest(dest));
return subscribeInternal(q, dest, fc);
}
void SubscriptionManager::setFlowControl(
const std::string& dest, uint32_t messages, uint32_t bytes, bool window)
{
session.messageSetFlowMode(dest, window);
session.messageFlow(dest, 0, messages);
session.messageFlow(dest, 1, bytes);
session.sync();
}
void SubscriptionManager::setFlowControl(const std::string& dest, const FlowControl& fc) {
setFlowControl(dest, fc.messages, fc.bytes, fc.window);
}
void SubscriptionManager::setFlowControl(const FlowControl& fc) { flowControl=fc; }
void SubscriptionManager::setFlowControl(
uint32_t messages_, uint32_t bytes_, bool window_)
{
setFlowControl(FlowControl(messages_, bytes_, window_));
}
const FlowControl& SubscriptionManager::getFlowControl() const { return flowControl; }
void SubscriptionManager::setAcceptMode(bool c) { acceptMode=c; }
void SubscriptionManager::setAcquireMode(bool a) { acquireMode=a; }
void SubscriptionManager::setAckPolicy(const AckPolicy& a) { autoAck=a; }
AckPolicy& SubscriptionManager::getAckPolicy() { return autoAck; }
void SubscriptionManager::cancel(const std::string dest)
{
sync(session).messageCancel(dest);
dispatcher.cancel(dest);
}
void SubscriptionManager::setAutoStop(bool set) { autoStop=set; }
void SubscriptionManager::run()
{
dispatcher.setAutoStop(autoStop);
dispatcher.run();
}
void SubscriptionManager::start()
{
dispatcher.setAutoStop(autoStop);
dispatcher.start();
}
void SubscriptionManager::stop()
{
dispatcher.stop();
}
bool SubscriptionManager::get(Message& result, const std::string& queue, sys::Duration timeout) {
LocalQueue lq;
std::string unique = framing::Uuid(true).str();
subscribe(lq, queue, FlowControl::messageCredit(1), unique);
AutoCancel ac(*this, unique);
//first wait for message to be delivered if a timeout has been specified
if (timeout && lq.get(result, timeout)) return true;
//make sure message is not on queue before final check
sync(session).messageFlush(unique);
return lq.get(result, 0);
}
Session SubscriptionManager::getSession() const { return session; }
void SubscriptionManager::registerFailoverHandler (boost::function<void ()> fh) {
dispatcher.registerFailoverHandler(fh);
}
}} // namespace qpid::client
#endif
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