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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 "qpid/cluster/FailoverExchange.h"
#include "qpid/broker/Message.h"
#include "qpid/broker/DeliverableMessage.h"
#include "qpid/broker/Queue.h"
#include "qpid/framing/MessageProperties.h"
#include "qpid/framing/AMQFrame.h"
#include "qpid/framing/AMQHeaderBody.h"
#include "qpid/framing/MessageTransferBody.h"
#include "qpid/log/Statement.h"
#include "qpid/framing/Array.h"
#include <boost/bind.hpp>
#include <algorithm>
namespace qpid {
namespace cluster {
using namespace std;
using namespace broker;
using namespace framing;
const string FailoverExchange::typeName("amq.failover");
FailoverExchange::FailoverExchange(management::Manageable* parent, Broker* b) : Exchange(typeName, parent, b ) {
if (mgmtExchange != 0)
mgmtExchange->set_type(typeName);
}
void FailoverExchange::setUrls(const vector<Url>& u) {
Lock l(lock);
urls = u;
}
void FailoverExchange::updateUrls(const vector<Url>& u) {
Lock l(lock);
urls=u;
if (urls.empty()) return;
std::for_each(queues.begin(), queues.end(),
boost::bind(&FailoverExchange::sendUpdate, this, _1));
}
string FailoverExchange::getType() const { return typeName; }
bool FailoverExchange::bind(Queue::shared_ptr queue, const string&, const framing::FieldTable*) {
Lock l(lock);
sendUpdate(queue);
return queues.insert(queue).second;
}
bool FailoverExchange::unbind(Queue::shared_ptr queue, const string&, const framing::FieldTable*) {
Lock l(lock);
return queues.erase(queue);
}
bool FailoverExchange::isBound(Queue::shared_ptr queue, const string* const, const framing::FieldTable*) {
Lock l(lock);
return queues.find(queue) != queues.end();
}
void FailoverExchange::route(Deliverable&, const string& , const framing::FieldTable* ) {
QPID_LOG(warning, "Message received by exchange " << typeName << " ignoring");
}
void FailoverExchange::sendUpdate(const Queue::shared_ptr& queue) {
// Called with lock held.
if (urls.empty()) return;
framing::Array array(0x95);
for (Urls::const_iterator i = urls.begin(); i != urls.end(); ++i)
array.add(boost::shared_ptr<Str16Value>(new Str16Value(i->str())));
const ProtocolVersion v;
boost::intrusive_ptr<Message> msg(new Message);
AMQFrame command(MessageTransferBody(v, typeName, 1, 0));
command.setLastSegment(false);
msg->getFrames().append(command);
AMQHeaderBody header;
header.get<MessageProperties>(true)->setContentLength(0);
header.get<MessageProperties>(true)->getApplicationHeaders().setArray(typeName, array);
AMQFrame headerFrame(header);
headerFrame.setFirstSegment(false);
msg->getFrames().append(headerFrame);
DeliverableMessage(msg).deliverTo(queue);
}
}} // namespace cluster
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