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/*
* Copyright (C) 2007-2023 Xagasoft, All rights reserved.
*
* This file is part of the libbu++ library and is released under the
* terms of the license contained in the file LICENSE.
*/
#ifndef BU_SERVER_H
#define BU_SERVER_H
#include <stdint.h>
#include "bu/string.h"
#include "bu/list.h"
#include "bu/clientlink.h"
#include "bu/clientlinkfactory.h"
#include "bu/hash.h"
#include "bu/synchroqueue.h"
#include "bu/thread.h"
#include "bu/counterevent.h"
#include "bu/config.h"
#ifndef PROFILE_BU_SERVER
// #define PROFILE_BU_SERVER 1
#endif
#ifdef PROFILE_BU_SERVER
#include "bu/profiler.h"
#endif
namespace Bu
{
class ServerSocket;
class Socket;
class Client;
/**
* Core of a network server. This class is distinct from a ServerSocket in
* that a ServerSocket is one listening socket, nothing more. Socket will
* manage a pool of both ServerSockets and connected Sockets along with
* their protocols and buffers.
*
* To start serving on a new port, use the addPort functions. Each call to
* addPort creates a new ServerSocket, starts it listening, and adds it to
* the server pool.
*
* All of the real work is done by scan, which will wait for up
* to the timeout set by setTimeout before returning if there is no data
* pending. scan should probably be called in some sort of tight
* loop, possibly in it's own thread, or in the main control loop.
*
* In order to use a Server you must subclass it and implement the pure
* virtual functions. These allow you to receive notification of events
* happening within the server itself, and actually makes it useful.
*@ingroup Serving
*/
class Server
{
friend class ServerInterface;
public:
Server( int iIoWorkers=4, int iClientWorkers=8 );
virtual ~Server();
#ifdef WIN32
typedef unsigned int fd;
#else
typedef int fd;
#endif
void addServerSocket( Bu::ServerSocket *pSocket );
virtual void scan();
void setTimeout( int nTimeoutSec, int nTimeoutUSec=0 );
void addClient( const Bu::ServerSocket *pSrv, Bu::Socket *pSocket );
Bu::Client *getClient( fd iId );
bool getClientAndSocket( fd iId, Bu::Client *&pClient,
Bu::Socket *&pSocket );
void setAutoTick( bool bEnable=true );
void tick();
virtual void onNewConnection( const Bu::ServerSocket *pSrv, Client *pClient, Bu::Socket *pSocket )=0;
virtual void onClosedConnection( Client *pClient )=0;
void shutdown();
protected:
void clientReadReady( fd iFd );
void clientWriteReady( fd iFd );
void closeClient( fd iSocket );
private:
class SrvClientLink : public Bu::ClientLink
{
public:
SrvClientLink( Bu::Client *pClient );
virtual ~SrvClientLink();
virtual void sendMessage( const Bu::String &sMsg );
private:
Bu::Client *pClient;
};
class SrvClientLinkFactory : public Bu::ClientLinkFactory
{
public:
SrvClientLinkFactory();
virtual ~SrvClientLinkFactory();
virtual Bu::ClientLink *createLink( Bu::Client *pClient );
};
class WriteMonitor : public Bu::Thread
{
public:
WriteMonitor( Server &rSrv );
virtual ~WriteMonitor();
protected:
virtual void run();
private:
Server &rSrv;
};
class Event
{
public:
enum Operation
{
Read,
Write,
Process
};
Event( fd iId, Operation eOp );
~Event();
fd getId() const;
Operation getOperation() const;
private:
fd iId;
Operation eOp;
};
typedef Bu::SynchroQueue<Event *> EventQueue;
class IoWorker : public Bu::Thread
{
public:
IoWorker( Server &rSrv );
virtual ~IoWorker();
protected:
virtual void run();
private:
void handleRead( Client *pClient, Socket *pSocket );
void handleWrite( Client *pClient, Socket *pSocket );
private:
Server &rSrv;
};
friend class Bu::Server::IoWorker;
class ClientWorker : public Bu::Thread
{
public:
ClientWorker( Server &rSrv );
virtual ~ClientWorker();
protected:
virtual void run();
private:
Server &rSrv;
};
friend class Bu::Server::ClientWorker;
class __ServerCore *pCore;
int nTimeoutSec;
int nTimeoutUSec;
typedef Hash<fd,ServerSocket *> SrvHash;
SrvHash hServers;
typedef Hash<fd,Client *> ClientHash;
typedef Hash<fd,Socket *> SocketHash;
ClientHash hClients;
SocketHash hSockets;
bool bAutoTick;
Bu::Mutex mClients;
Bu::Mutex mScan;
Bu::Mutex mWorkers;
EventQueue qIoEvent;
EventQueue qClientEvent;
typedef List<IoWorker *> IoWorkerList;
typedef List<ClientWorker *> ClientWorkerList;
IoWorkerList lIoWorker;
ClientWorkerList lClientWorker;
WriteMonitor tMonitorWrite;
bool bRunning;
};
}
#endif
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