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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.
*
*/
#include "QueueHandler.h"
#include "EventHandler.h"
#include "QueueReplica.h"
#include "QueueContext.h"
#include "qpid/broker/Queue.h"
#include "qpid/broker/QueuedMessage.h"
#include "qpid/framing/AllInvoker.h"
#include "qpid/Exception.h"
#include "qpid/log/Statement.h"
namespace qpid {
namespace cluster {
// FIXME aconway 2011-05-11: make Multicaster+EventHandler available as Group, clean this up?
QueueHandler::QueueHandler(EventHandler& eh, Multicaster& m, const Settings& s)
: HandlerBase(eh), multicaster(m), consumeLock(s.getConsumeLock()) {}
bool QueueHandler::handle(const framing::AMQFrame& frame) {
return framing::invoke(*this, *frame.getBody()).wasHandled();
}
void QueueHandler::subscribe(const std::string& queue) {
find(queue)->subscribe(sender());
}
void QueueHandler::unsubscribe(const std::string& queue) {
find(queue)->unsubscribe(sender());
}
void QueueHandler::resubscribe(const std::string& queue) {
find(queue)->resubscribe(sender());
}
void QueueHandler::left(const MemberId& member) {
// Unsubscribe for members that leave.
for (QueueMap::iterator i = queues.begin(); i != queues.end(); ++i)
i->second->unsubscribe(member);
}
// FIXME aconway 2011-06-08: do we need to hold on to the shared pointer for lifecycle?
// FIXME aconway 2011-09-13: called from wiring handler, need to consider for multi-cpg.
void QueueHandler::add(boost::shared_ptr<broker::Queue> q) {
// FIXME aconway 2011-06-08: move create operation from Wiring to Queue handler.
// FIXME aconway 2011-05-10: assert not already in map.
// Local queues already have a context, remote queues need one.
if (!QueueContext::get(*q))
new QueueContext(*q, consumeLock, multicaster); // Context attaches itself to the Queue
// FIXME aconway 2011-09-15: thread safety: called from wiring handler..
queues[q->getName()] = boost::intrusive_ptr<QueueReplica>(
new QueueReplica(q, self()));
}
boost::intrusive_ptr<QueueReplica> QueueHandler::find(const std::string& queue) {
QueueMap::iterator i = queues.find(queue);
if (i == queues.end())
throw Exception(QPID_MSG("Unknown queue " << queue << " in cluster queue handler"));
return i->second;
}
}} // namespace qpid::cluster
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