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#ifndef _tests_InProcessBroker_h
#define _tests_InProcessBroker_h
/*
*
* Copyright (c) 2006 The Apache Software Foundation
*
* Licensed 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 <vector>
#include <iostream>
#include <algorithm>
#include "AMQP_HighestVersion.h"
#include "framing/AMQFrame.h"
#include "broker/Broker.h"
#include "broker/Connection.h"
#include "client/Connector.h"
#include "client/Connection.h"
namespace qpid {
namespace broker {
/** Make a copy of a frame body. Inefficient, only intended for tests. */
// TODO aconway 2007-01-29: from should be const, need to fix
// AMQPFrame::encode as const.
framing::AMQFrame copy(framing::AMQFrame& from) {
framing::Buffer buffer(from.size());
from.encode(buffer);
buffer.flip();
framing::AMQFrame result;
result.decode(buffer);
return result;
}
/**
* A broker that implements client::Connector allowing direct
* in-process connection of client to broker. Used to write round-trip
* tests without requiring an external broker process.
*
* Also allows you to "snoop" on frames exchanged between client & broker.
*
* see FramingTest::testRequestResponseRoundtrip() for example of use.
*/
class InProcessBroker : public client::Connector {
public:
enum Sender {CLIENT,BROKER};
struct Frame : public framing::AMQFrame {
Frame(Sender e, const AMQFrame& f) : AMQFrame(f), from(e) {}
bool fromBroker() const { return from == BROKER; }
bool fromClient() const { return from == CLIENT; }
template <class MethodType>
MethodType* asMethod() {
return dynamic_cast<MethodType*>(getBody().get());
}
Sender from;
};
typedef std::vector<Frame> Conversation;
InProcessBroker(framing::ProtocolVersion ver=
framing::highestProtocolVersion
) :
Connector(ver),
protocolInit(ver),
broker(broker::Broker::create()),
brokerOut(BROKER, conversation),
brokerConnection(&brokerOut, *broker),
clientOut(CLIENT, conversation, &brokerConnection)
{}
~InProcessBroker() { broker->shutdown(); }
void connect(const std::string& /*host*/, int /*port*/) {}
void init() { brokerConnection.initiated(&protocolInit); }
void close() {}
/** Client's input handler. */
void setInputHandler(framing::InputHandler* handler) {
brokerOut.in = handler;
}
/** Called by client to send a frame */
void send(framing::AMQFrame* frame) {
clientOut.send(frame);
}
/** Entire client-broker conversation is recorded here */
Conversation conversation;
private:
/** OutputHandler that forwards data to an InputHandler */
struct OutputToInputHandler : public sys::ConnectionOutputHandler {
OutputToInputHandler(
Sender from_, Conversation& conversation_,
framing::InputHandler* ih=0
) : from(from_), conversation(conversation_), in(ih) {}
void send(framing::AMQFrame* frame) {
conversation.push_back(Frame(from, copy(*frame)));
in->received(frame);
}
void close() {}
Sender from;
Conversation& conversation;
framing::InputHandler* in;
};
framing::ProtocolInitiation protocolInit;
Broker::shared_ptr broker;
OutputToInputHandler brokerOut;
broker::Connection brokerConnection;
OutputToInputHandler clientOut;
};
std::ostream& operator<<(
std::ostream& out, const InProcessBroker::Frame& frame)
{
return out << (frame.fromBroker()? "BROKER: ":"CLIENT: ") <<
static_cast<const framing::AMQFrame&>(frame);
}
std::ostream& operator<<(
std::ostream& out, const InProcessBroker::Conversation& conv)
{
for (InProcessBroker::Conversation::const_iterator i = conv.begin();
i != conv.end(); ++i)
{
out << *i << std::endl;
}
return out;
}
}} // namespace qpid::broker
/** An in-process client+broker all in one. */
class InProcessBrokerClient : public qpid::client::Connection {
public:
qpid::broker::InProcessBroker broker;
qpid::broker::InProcessBroker::Conversation& conversation;
/** Constructor creates broker and opens client connection. */
InProcessBrokerClient(qpid::framing::ProtocolVersion version=
qpid::framing::highestProtocolVersion
) : broker(version), conversation(broker.conversation)
{
setConnector(broker);
open("");
}
~InProcessBrokerClient() {}
};
#endif // _tests_InProcessBroker_h
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