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/*
sockpool.* - socket connection pool
Copyright (C) 1999-2002 Matthew Mueller <donut AT dakotacom.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __SOCKPOOL_H__
#define __SOCKPOOL_H__
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdarg.h>
#include "server.h"
#include "file.h"
#include "log.h"
class Connection {
protected:
time_t lastuse;
public:
c_file_tcp sock;
c_server::ptr server;
c_group_info::ptr curgroup;
bool freshconnect;
bool server_ok;
int putline(int echo,const char * str,...)
__attribute__ ((format (printf, 3, 4)));
int doputline(int echo,const char * str,va_list ap);
int getline(int echo);
time_t age(void) const {
return time(NULL)-lastuse;
}
void touch(void) {
lastuse=time(NULL);
}
bool isopen(void) const {
return sock.isopen();
}
void close(int fast=0) {
if (sock.isopen()){
if (!fast)
putline(quiet<2,"QUIT");
else if (quiet<2)
printf("%s close(fast)\n", server->shortname.c_str());
sock.close();
}
}
Connection(c_server::ptr serv):lastuse(0), sock(serv->addr.c_str(), "nntp"), server(serv){
sock.initrbuf();
freshconnect=true;
server_ok=false;
curgroup=NULL;
}
};
typedef map<c_server::ptr, Connection *> t_connection_map;
class SockPool {
protected:
//t_connection_map used_connections;
t_connection_map connections;
void connection_erase(t_connection_map::iterator i);
public:
bool is_connected(const c_server::ptr &server) const {
return (connections.find(server) != connections.end());
}
// int total_connections(void) const {
// return free_connections.size() + used_connections.size();
// }
Connection* connect(const c_server::ptr &server);
void release(Connection *connection);
void expire_old_connection(void);
void expire_connections(bool closeall=false);
~SockPool() {
expire_connections(true);
}
};
class ConnectionHolder {
protected:
SockPool * pool;
Connection ** connection;
public:
ConnectionHolder(SockPool *sockpool, Connection **conn, const c_server::ptr &server):pool(sockpool), connection(conn) {
PDEBUG(DEBUG_MED, "aquiring connection to %s", server->alias.c_str());
*connection = pool->connect(server);
PDEBUG(DEBUG_MED, "aquired connection to %s (%p)", server->alias.c_str(), *connection);
pool->expire_connections();
}
~ConnectionHolder() {
PDEBUG(DEBUG_MED, "releasing connection to (%p)", *connection);
assert(pool);
assert(connection);
if (*connection) { //*connection can be NULL if pool->connect failed.
pool->release(*connection);
*connection=NULL;
}
}
};
#endif
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