/******************************************************************************
* *
* Function: main_watchdog_loop *
* *
* Purpose: check database availability every DB_PING_FREQUENCY seconds and *
* alert admins if it is down *
* *
* Author: Alexei Vladishev, Rudolfs Kreicbergs *
* *
******************************************************************************/
void main_watchdog_loop()
{
int now, nextsync = 0;
zabbix_log(LOG_LEVEL_DEBUG, "In main_watchdog_loop()");
/* disable writing to database in zabbix_syslog() */
CONFIG_ENABLE_LOG = 0;
zbx_vector_ptr_create(&recipients);
for (;;)
{
zbx_setproctitle("%s [pinging database]", get_process_type_string(process_type));
if (ZBX_DB_OK != DBconnect(ZBX_DB_CONNECT_ONCE))
{
zabbix_log(LOG_LEVEL_WARNING, "watchdog: database is down");
send_alerts();
}
else if (nextsync <= (now = (int)time(NULL)))
{
zbx_setproctitle("%s [syncing configuration]", get_process_type_string(process_type));
sync_config();
nextsync = now + CONFIG_CONFSYNCER_FREQUENCY;
}
DBclose();
zbx_sleep_loop(DB_PING_FREQUENCY);
}
}
/******************************************************************************
* *
* Function: main_watchdog_loop *
* *
* Purpose: check database availability every DB_PING_FREQUENCY seconds and *
* alert admins if it is down *
* *
* Author: Alexei Vladishev, Rudolfs Kreicbergs *
* *
******************************************************************************/
ZBX_THREAD_ENTRY(watchdog_thread, args)
{
int now, nextsync = 0, action;
double sec;
process_type = ((zbx_thread_args_t *)args)->process_type;
server_num = ((zbx_thread_args_t *)args)->server_num;
process_num = ((zbx_thread_args_t *)args)->process_num;
zabbix_log(LOG_LEVEL_INFORMATION, "%s #%d started [%s #%d]", get_daemon_type_string(daemon_type),
server_num, get_process_type_string(process_type), process_num);
zbx_vector_ptr_create(&recipients);
for (;;)
{
zbx_setproctitle("%s [pinging database]", get_process_type_string(process_type));
sec = zbx_time();
action = 0;
if (ZBX_DB_OK != DBconnect(ZBX_DB_CONNECT_ONCE))
{
zabbix_log(LOG_LEVEL_WARNING, "watchdog: database is down");
send_alerts();
action = 1;
}
else if (nextsync <= (now = (int)time(NULL)))
{
zbx_setproctitle("%s [syncing configuration]", get_process_type_string(process_type));
sync_config();
nextsync = now + CONFIG_CONFSYNCER_FREQUENCY;
action = 2;
}
DBclose();
sec = zbx_time() - sec;
if (1 == action)
{
zbx_setproctitle("%s [database is down, checking took " ZBX_FS_DBL " sec, idle %d sec]",
get_process_type_string(process_type), sec, (int)DB_PING_FREQUENCY);
}
else if (2 == action)
{
zbx_setproctitle("%s [synced alerts config in " ZBX_FS_DBL " sec, idle %d sec]",
get_process_type_string(process_type), sec, (int)DB_PING_FREQUENCY);
}
zbx_sleep_loop(DB_PING_FREQUENCY);
}
}
