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// **********************************************************************
//
// Copyright (c) 2003-2008 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#ifndef ICE_CONNECTION_I_H
#define ICE_CONNECTION_I_H
#include <IceUtil/Mutex.h>
#include <IceUtil/Monitor.h>
#include <IceUtil/Time.h>
#include <IceUtil/Thread.h> // For ThreadPerConnection.
#include <Ice/Connection.h>
#include <Ice/ConnectionIF.h>
#include <Ice/ConnectionFactoryF.h>
#include <Ice/InstanceF.h>
#include <Ice/TransceiverF.h>
#include <Ice/ObjectAdapterF.h>
#include <Ice/ServantManagerF.h>
#include <Ice/EndpointIF.h>
#include <Ice/LoggerF.h>
#include <Ice/TraceLevelsF.h>
#include <Ice/OutgoingAsyncF.h>
#include <Ice/EventHandler.h>
#include <Ice/SelectorThread.h>
#include <deque>
namespace IceInternal
{
class Outgoing;
class BatchOutgoing;
class OutgoingMessageCallback;
}
namespace Ice
{
class LocalException;
class ICE_API ConnectionI : public Connection,
public IceInternal::EventHandler,
public IceInternal::SocketReadyCallback,
public IceUtil::Monitor<IceUtil::Mutex>
{
public:
class StartCallback : virtual public IceUtil::Shared
{
public:
virtual void connectionStartCompleted(const ConnectionIPtr&) = 0;
virtual void connectionStartFailed(const ConnectionIPtr&, const Ice::LocalException&) = 0;
};
typedef IceUtil::Handle<StartCallback> StartCallbackPtr;
enum DestructionReason
{
ObjectAdapterDeactivated,
CommunicatorDestroyed
};
void start(const StartCallbackPtr&);
void activate();
void hold();
void destroy(DestructionReason);
virtual void close(bool); // From Connection.
bool isActiveOrHolding() const;
bool isFinished() const;
void throwException() const; // Throws the connection exception if destroyed.
void waitUntilHolding() const;
void waitUntilFinished(); // Not const, as this might close the connection upon timeout.
void monitor();
bool sendRequest(IceInternal::Outgoing*, bool, bool);
void sendAsyncRequest(const IceInternal::OutgoingAsyncPtr&, bool, bool);
void prepareBatchRequest(IceInternal::BasicStream*);
void finishBatchRequest(IceInternal::BasicStream*, bool);
void abortBatchRequest();
virtual void flushBatchRequests(); // From Connection.
bool flushBatchRequests(IceInternal::BatchOutgoing*);
void flushAsyncBatchRequests(const IceInternal::BatchOutgoingAsyncPtr&);
void sendResponse(IceInternal::BasicStream*, Byte);
void sendNoResponse();
IceInternal::EndpointIPtr endpoint() const;
bool threadPerConnection() const;
virtual void setAdapter(const ObjectAdapterPtr&); // From Connection.
virtual ObjectAdapterPtr getAdapter() const; // From Connection.
virtual ObjectPrx createProxy(const Identity& ident) const; // From Connection.
//
// Operations from EventHandler
//
virtual bool datagram() const;
virtual bool readable() const;
virtual bool read(IceInternal::BasicStream&);
virtual void message(IceInternal::BasicStream&, const IceInternal::ThreadPoolPtr&);
virtual void finished(const IceInternal::ThreadPoolPtr&);
virtual void exception(const LocalException&);
virtual void invokeException(const LocalException&, int);
virtual std::string type() const; // From Connection.
virtual Ice::Int timeout() const; // From Connection.
virtual std::string toString() const; // From Connection and EvantHandler.
//
// Operations from SocketReadyCallback
//
virtual IceInternal::SocketStatus socketReady(bool);
virtual void socketTimeout();
// SSL plug-in needs to be able to get the transceiver.
IceInternal::TransceiverPtr getTransceiver() const;
private:
ConnectionI(const IceInternal::InstancePtr&, const IceInternal::TransceiverPtr&,
const IceInternal::EndpointIPtr&, const ObjectAdapterPtr&, bool, size_t);
virtual ~ConnectionI();
friend class IceInternal::IncomingConnectionFactory;
friend class IceInternal::OutgoingConnectionFactory;
enum State
{
StateNotInitialized,
StateNotValidated,
StateActive,
StateHolding,
StateClosing,
StateClosed
};
void setState(State, const LocalException&);
void setState(State);
void initiateShutdown();
struct OutgoingMessage
{
OutgoingMessage()
{
}
OutgoingMessage(IceInternal::BasicStream* str, bool comp) :
stream(str), out(0), compress(comp), response(false), adopted(false)
{
}
OutgoingMessage(IceInternal::OutgoingMessageCallback* o, IceInternal::BasicStream* str, bool comp, bool resp) :
stream(str), out(o), compress(comp), response(resp), adopted(false)
{
}
OutgoingMessage(const IceInternal::OutgoingAsyncMessageCallbackPtr& o, IceInternal::BasicStream* str,
bool comp, bool resp) :
stream(str), out(0), outAsync(o), compress(comp), response(resp), adopted(false)
{
}
void adopt(IceInternal::BasicStream*);
void sent(ConnectionI*, bool);
void finished(const Ice::LocalException&);
IceInternal::BasicStream* stream;
IceInternal::OutgoingMessageCallback* out;
IceInternal::OutgoingAsyncMessageCallbackPtr outAsync;
bool compress;
bool response;
bool adopted;
};
IceInternal::SocketStatus initialize();
IceInternal::SocketStatus validate();
bool send(int);
bool sendMessage(OutgoingMessage&);
void finishStart();
void finishStart(const Ice::LocalException&);
void registerWithPool();
void unregisterWithPool();
void doCompress(IceInternal::BasicStream&, IceInternal::BasicStream&);
void doUncompress(IceInternal::BasicStream&, IceInternal::BasicStream&);
void parseMessage(IceInternal::BasicStream&, Int&, Int&, Byte&,
IceInternal::ServantManagerPtr&, ObjectAdapterPtr&, IceInternal::OutgoingAsyncPtr&);
void invokeAll(IceInternal::BasicStream&, Int, Int, Byte,
const IceInternal::ServantManagerPtr&, const ObjectAdapterPtr&);
void run(); // For thread per connection.
class ThreadPerConnection : public IceUtil::Thread
{
public:
ThreadPerConnection(const ConnectionIPtr&);
virtual void run();
private:
ConnectionIPtr _connection;
};
friend class ThreadPerConnection;
// Defined as mutable because "isFinished() const" sets this to 0.
mutable IceUtil::ThreadPtr _thread;
const bool _threadPerConnection;
const size_t _threadPerConnectionStackSize;
IceInternal::TransceiverPtr _transceiver;
const std::string _desc;
const std::string _type;
const IceInternal::EndpointIPtr _endpoint;
ObjectAdapterPtr _adapter;
IceInternal::ServantManagerPtr _servantManager;
const LoggerPtr _logger;
const IceInternal::TraceLevelsPtr _traceLevels;
bool _registeredWithPool;
int _finishedCount;
const IceInternal::ThreadPoolPtr _threadPool;
const IceInternal::SelectorThreadPtr _selectorThread;
StartCallbackPtr _startCallback;
const bool _warn;
const int _acmTimeout;
IceUtil::Time _acmAbsoluteTimeout;
const int _compressionLevel;
Int _nextRequestId;
std::map<Int, IceInternal::Outgoing*> _requests;
std::map<Int, IceInternal::Outgoing*>::iterator _requestsHint;
std::map<Int, IceInternal::OutgoingAsyncPtr> _asyncRequests;
std::map<Int, IceInternal::OutgoingAsyncPtr>::iterator _asyncRequestsHint;
std::auto_ptr<LocalException> _exception;
const bool _batchAutoFlush;
IceInternal::BasicStream _batchStream;
bool _batchStreamInUse;
int _batchRequestNum;
bool _batchRequestCompress;
size_t _batchMarker;
std::deque<OutgoingMessage> _queuedStreams;
std::deque<OutgoingMessage> _sendStreams;
bool _sendInProgress;
int _dispatchCount;
State _state; // The current state.
IceUtil::Time _stateTime; // The last time when the state was changed.
};
}
#endif
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