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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 "SubscriptionImpl.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), autoStop(true)
{}
Subscription SubscriptionManager::subscribe(
MessageListener& listener, const std::string& q, const SubscriptionSettings& ss, const std::string& n)
{
std::string name=n.empty() ? q:n;
boost::intrusive_ptr<SubscriptionImpl> si = new SubscriptionImpl(*this, q, ss, name, &listener);
dispatcher.listen(si);
//issue subscription request after listener is registered with dispatcher
si->subscribe();
return subscriptions[name] = Subscription(si.get());
}
Subscription SubscriptionManager::subscribe(
LocalQueue& lq, const std::string& q, const SubscriptionSettings& ss, const std::string& n)
{
std::string name=n.empty() ? q:n;
boost::intrusive_ptr<SubscriptionImpl> si = new SubscriptionImpl(*this, q, ss, name, 0);
lq.queue=si->divert();
si->subscribe();
lq.subscription = Subscription(si.get());
return subscriptions[name] = lq.subscription;
}
Subscription SubscriptionManager::subscribe(
MessageListener& listener, const std::string& q, const std::string& n)
{
return subscribe(listener, q, defaultSettings, n);
}
Subscription SubscriptionManager::subscribe(
LocalQueue& lq, const std::string& q, const std::string& n)
{
return subscribe(lq, q, defaultSettings, n);
}
void SubscriptionManager::cancel(const std::string& dest)
{
std::map<std::string, Subscription>::iterator i = subscriptions.find(dest);
if (i != subscriptions.end()) {
sync(session).messageCancel(dest);
dispatcher.cancel(dest);
Subscription s = i->second;
if (s.isValid()) subscriptions[dest].impl->cancelDiversion();
subscriptions.erase(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::wait()
{
dispatcher.wait();
}
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, SubscriptionSettings(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);
}
Message SubscriptionManager::get(const std::string& queue, sys::Duration timeout) {
Message result;
if (!get(result, queue, timeout))
throw Exception("Timed out waiting for a message");
return result;
}
Session SubscriptionManager::getSession() const { return session; }
Subscription SubscriptionManager::getSubscription(const std::string& name) const {
std::map<std::string, Subscription>::const_iterator i = subscriptions.find(name);
if (i == subscriptions.end())
throw Exception(QPID_MSG("Subscription not found: " << name));
return i->second;
}
void SubscriptionManager::registerFailoverHandler (boost::function<void ()> fh) {
dispatcher.registerFailoverHandler(fh);
}
void SubscriptionManager::setFlowControl(const std::string& name, const FlowControl& flow) {
getSubscription(name).setFlowControl(flow);
}
void SubscriptionManager::setFlowControl(const std::string& name, uint32_t messages, uint32_t bytes, bool window) {
setFlowControl(name, FlowControl(messages, bytes, window));
}
}} // namespace qpid::client
#endif
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