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#ifndef QPID_BROKER_SESSIONHANDLER_H
#define QPID_BROKER_SESSIONHANDLER_H
/*
*
* 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/amqp_0_10/SessionHandler.h"
#include "qpid/broker/SessionHandler.h"
#include "qpid/framing/AMQP_ClientProxy.h"
#include <boost/shared_ptr.hpp>
namespace qpid {
class SessionState;
namespace broker {
class Connection;
class ConnectionState;
class SessionState;
/**
* A SessionHandler is associated with each active channel. It
* receives incoming frames, handles session controls and manages the
* association between the channel and a session.
*/
class SessionHandler : public qpid::amqp_0_10::SessionHandler {
public:
class ErrorListener {
public:
virtual ~ErrorListener() {}
virtual void connectionException(
framing::connection::CloseCode code, const std::string& msg) = 0;
virtual void channelException(
framing::session::DetachCode, const std::string& msg) = 0;
virtual void executionException(
framing::execution::ErrorCode, const std::string& msg) = 0;
/** Called when it is safe to delete the ErrorListener. */
virtual void detach() = 0;
};
/**
*@param e must not be deleted until ErrorListener::detach has been called */
SessionHandler(Connection&, framing::ChannelId);
~SessionHandler();
/** Get broker::SessionState */
SessionState* getSession() { return session.get(); }
const SessionState* getSession() const { return session.get(); }
ConnectionState& getConnection();
const ConnectionState& getConnection() const;
framing::AMQP_ClientProxy& getProxy() { return proxy; }
const framing::AMQP_ClientProxy& getProxy() const { return proxy; }
/**
* If commands are sent based on the local time (e.g. in timers), they don't have
* a well-defined ordering across cluster nodes.
* This proxy is for sending such commands. In a clustered broker it will take steps
* to synchronize command order across the cluster. In a stand-alone broker
* it is just a synonym for getProxy()
*/
framing::AMQP_ClientProxy& getClusterOrderProxy() {
return clusterOrderProxy.get() ? *clusterOrderProxy : proxy;
}
virtual void handleDetach();
void attached(const std::string& name);//used by 'pushing' inter-broker bridges
void attachAs(const std::string& name);//used by 'pulling' inter-broker bridges
void setErrorListener(boost::shared_ptr<ErrorListener> e) { errorListener = e; }
protected:
virtual void setState(const std::string& sessionName, bool force);
virtual qpid::SessionState* getState();
virtual framing::FrameHandler* getInHandler();
virtual void connectionException(framing::connection::CloseCode code, const std::string& msg);
virtual void channelException(framing::session::DetachCode, const std::string& msg);
virtual void executionException(framing::execution::ErrorCode, const std::string& msg);
virtual void detaching();
virtual void readyToSend();
private:
struct SetChannelProxy : public framing::AMQP_ClientProxy { // Proxy that sets the channel.
framing::ChannelHandler setChannel;
SetChannelProxy(uint16_t ch, framing::FrameHandler* out)
: framing::AMQP_ClientProxy(setChannel), setChannel(ch, out) {}
};
Connection& connection;
framing::AMQP_ClientProxy proxy;
std::auto_ptr<SessionState> session;
std::auto_ptr<SetChannelProxy> clusterOrderProxy;
boost::shared_ptr<ErrorListener> errorListener;
};
}} // namespace qpid::broker
#endif /*!QPID_BROKER_SESSIONHANDLER_H*/
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