stats.h

/*
 * $Id$
 *
 *
 * Copyright (C) 2001-2003 FhG Fokus
 *
 * This file is part of ser, a free SIP server.
 *
 * ser 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
 *
 * For a license to use the ser software under conditions
 * other than those described here, or to purchase support for this
 * software, please contact iptel.org by e-mail at the following addresses:
 *    info@iptel.org
 *
 * ser 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */


#ifndef stats_h
#define stats_h

#include <ctype.h>
#include <sys/mman.h>
#include <sys/fcntl.h>
#include <sys/time.h>
#include <time.h>
#include <sys/utsname.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>


#define _update_request( method, dir )                  \
        do{ if (stat_file!=NULL) switch( method ) {     \
                case METHOD_INVITE: stats->dir##_requests_inv++; break; \
                case METHOD_ACK: stats->dir##_requests_ack++; break;            \
                case METHOD_CANCEL: stats->dir##_requests_cnc++; break; \
                case METHOD_BYE: stats->dir##_requests_bye++; break;            \
                case METHOD_INFO: stats->dir##_requests_info++; break;          \
                case METHOD_OTHER: stats->dir##_requests_other++; break;        \
                default: LOG(L_ERR, "ERROR: unknown method in rq stats (%s)\n", \
                                                        #dir);  \
                }       \
        }while(0)


/*
#define update_received_request( method ) _update_request( method, received )
#define update_sent_request( method ) _update_request( method, sent )

#define update_received_response( statusclass ) \
                                                                        _update_response( statusclass, received )
#define update_sent_response( statusclass ) \
                                                                        _update_response( statusclass, sent )
#define update_received_drops   {  stats->received_drops++; }
#define update_fail_on_send     {  stats->failed_on_send++; }
*/

#define         _statusline(class, dir )\
                                                case class: stats->dir##_responses_##class++; break;

/* FIXME: Don't have case for _other (see received_responses_other) */
#define _update_response( statusclass, dir )            \
        do{ if (stat_file!=NULL)                          \
                switch( statusclass ) {                 \
                        _statusline(1, dir)                   \
                        _statusline(2, dir)                   \
                        _statusline(3, dir)                   \
                        _statusline(4, dir)                   \
                        _statusline(5, dir)                   \
                        _statusline(6, dir)                   \
                        default: LOG(L_INFO, "ERROR: unusual status code"\
                                                                                 " received in stats (%s)\n", #dir); \
                }       \
        }while(0)

#ifdef STATS
#       define STATS_RX_REQUEST(method) _update_request(method, received)
#       define STATS_TX_REQUEST(method) _update_request(method, sent )
#       define STATS_RX_RESPONSE(class) _update_response( class, received )
#       define STATS_TX_RESPONSE(class) _update_response( class, sent )
#       define STATS_RX_DROPS {  stats->received_drops++; }
#       define STATS_TX_DROPS {  stats->failed_on_send++; }
#else
#       define STATS_RX_REQUEST(method)
#       define STATS_TX_REQUEST(method)
#       define STATS_RX_RESPONSE(class) 
#       define STATS_TX_RESPONSE(class) 
#       define STATS_RX_DROPS 
#       define STATS_TX_DROPS 
#endif

#ifdef STATS


struct stats_s {

        unsigned int    process_index;
        pid_t           pid;
        time_t          start_time;

        unsigned long 

        /* received packets */

        received_requests_inv,          /* received_requests */
        received_requests_ack,
        received_requests_cnc,
        received_requests_bye,
        received_requests_other,

        received_responses_1,           /* received_responses */
        received_responses_2,
        received_responses_3,
        received_responses_4,
        received_responses_5,
        received_responses_6,
        received_responses_other,

        received_drops, /* all messages we received and did not process
                                           successfully; reasons include SIP sanity checks 
                                           (missing Vias, neither request nor response, 
                                           failed parsing), ser errors (malloc, action
                                           failure)
                                        */

        /* sent */

        /* sent_requests */
        sent_requests_inv,
        sent_requests_ack,
        sent_requests_cnc,
        sent_requests_bye,
        sent_requests_other,

        /* sent responses */
        sent_responses_1,
        sent_responses_2,
        sent_responses_3,
        sent_responses_4,
        sent_responses_5,
        sent_responses_6,
        /* FIXME: Don't want sent_responses_other?? */

        processed_requests,
        processed_responses,
        acc_req_time,
        acc_res_time,

        failed_on_send;                 
};

extern struct stats_s *stats;
extern char *stat_file;

int init_stats( int nr_of_processes );
void setstats( int child_index );
int dump_all_statistic();
int dump_statistic(FILE *fp, struct stats_s *istats, int printheader);
/* Registers handlers with SNMP module */
int stats_register(); 

#endif
#endif