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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 "Protocol.h"
#include "qpid/broker/RecoverableMessageImpl.h"
#include "qpid/amqp_0_10/Connection.h"
#include "qpid/broker/amqp_0_10/Connection.h"
#include "qpid/broker/amqp_0_10/MessageTransfer.h"
#include "qpid/broker/SecureConnection.h"
#include "qpid/log/Statement.h"
namespace qpid {
namespace broker {
namespace {
const std::string AMQP_0_10("amqp0-10");
}
ProtocolRegistry::ProtocolRegistry(const std::set<std::string>& e, Broker* b) : enabled(e), broker(b) {}
qpid::sys::ConnectionCodec* ProtocolRegistry::create(const qpid::framing::ProtocolVersion& v, qpid::sys::OutputControl& o, const std::string& id, const qpid::sys::SecuritySettings& s)
{
if (v == qpid::framing::ProtocolVersion(0, 10)) {
if (isEnabled(AMQP_0_10)) {
return create_0_10(o, id, s, false);
}
}
qpid::sys::ConnectionCodec* codec = 0;
for (Protocols::const_iterator i = protocols.begin(); !codec && i != protocols.end(); ++i) {
if (isEnabled(i->first)) {
codec = i->second->create(v, o, id, s);
}
}
return codec;
}
qpid::sys::ConnectionCodec* ProtocolRegistry::create(qpid::sys::OutputControl& o, const std::string& id, const qpid::sys::SecuritySettings& s)
{
return create_0_10(o, id, s, true);
}
qpid::framing::ProtocolVersion ProtocolRegistry::supportedVersion() const
{
if (isEnabled(AMQP_0_10)) {
return qpid::framing::ProtocolVersion(0,10);
} else {
for (Protocols::const_iterator i = protocols.begin(); i != protocols.end(); ++i) {
if (isEnabled(i->first)) {
return i->second->supportedVersion();
}
}
}
QPID_LOG(error, "No enabled protocols!");
return qpid::framing::ProtocolVersion(0,0);
}
bool ProtocolRegistry::isEnabled(const std::string& name) const
{
return enabled.empty()/*if nothing is explicitly enabled, assume everything is*/ || enabled.find(name) != enabled.end();
}
typedef std::auto_ptr<qpid::amqp_0_10::Connection> CodecPtr;
typedef std::auto_ptr<SecureConnection> SecureConnectionPtr;
typedef std::auto_ptr<qpid::broker::amqp_0_10::Connection> ConnectionPtr;
typedef std::auto_ptr<sys::ConnectionInputHandler> InputPtr;
sys::ConnectionCodec*
ProtocolRegistry::create_0_10(qpid::sys::OutputControl& out, const std::string& id,
const qpid::sys::SecuritySettings& external, bool brokerActsAsClient)
{
assert(broker);
SecureConnectionPtr sc(new SecureConnection());
CodecPtr c(new qpid::amqp_0_10::Connection(out, id, brokerActsAsClient));
ConnectionPtr i(new broker::amqp_0_10::Connection(c.get(), *broker, id, external, brokerActsAsClient));
i->setSecureConnection(sc.get());
c->setInputHandler(InputPtr(i.release()));
sc->setCodec(std::auto_ptr<sys::ConnectionCodec>(c));
return sc.release();
}
boost::intrusive_ptr<const qpid::broker::amqp_0_10::MessageTransfer> ProtocolRegistry::translate(const Message& m)
{
boost::intrusive_ptr<const qpid::broker::amqp_0_10::MessageTransfer> transfer;
const qpid::broker::amqp_0_10::MessageTransfer* ptr = dynamic_cast<const qpid::broker::amqp_0_10::MessageTransfer*>(&m.getEncoding());
if (ptr) transfer = boost::intrusive_ptr<const qpid::broker::amqp_0_10::MessageTransfer>(ptr);
for (Protocols::const_iterator i = protocols.begin(); !transfer && i != protocols.end(); ++i) {
transfer = i->second->translate(m);
}
if (!transfer) throw new Exception("Could not convert message into 0-10");
return transfer;
}
boost::shared_ptr<RecoverableMessage> ProtocolRegistry::recover(qpid::framing::Buffer& b)
{
uint32_t position = b.getPosition();
for (Protocols::const_iterator i = protocols.begin(); i != protocols.end(); ++i) {
boost::shared_ptr<RecoverableMessage> msg = i->second->recover(b);
if (msg) return msg;
else b.setPosition(position);
}
boost::intrusive_ptr<qpid::broker::amqp_0_10::MessageTransfer> transfer(new qpid::broker::amqp_0_10::MessageTransfer());
transfer->decodeHeader(b);
boost::shared_ptr<RecoverableMessage> msg(new RecoverableMessageImpl(Message(transfer, transfer)));
return msg;
}
Message ProtocolRegistry::decode(qpid::framing::Buffer& buffer)
{
boost::shared_ptr<RecoverableMessage> r = recover(buffer);
r->decodeContent(buffer);
return r->getMessage();
}
ProtocolRegistry::~ProtocolRegistry()
{
for (Protocols::const_iterator i = protocols.begin(); i != protocols.end(); ++i) {
delete i->second;
}
protocols.clear();
}
void ProtocolRegistry::add(const std::string& key, Protocol* protocol)
{
protocols[key] = protocol;
QPID_LOG(info, "Loaded protocol " << key);
}
}} // namespace qpid::broker
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