/******************************************************************************
* *
* Function: process_pinger_hosts *
* *
* Purpose: *
* *
* Parameters: *
* *
* Return value: *
* *
* Author: Alexander Vladishev *
* *
* Comments: *
* *
******************************************************************************/
static void process_pinger_hosts(icmpitem_t *items, int items_count)
{
const char *__function_name = "process_pinger_hosts";
int i, first_index = 0, ping_result;
char error[ITEM_ERROR_LEN_MAX];
static ZBX_FPING_HOST *hosts = NULL;
static int hosts_alloc = 4;
int hosts_count = 0;
zbx_timespec_t ts;
zabbix_log(LOG_LEVEL_DEBUG, "In %s()", __function_name);
if (NULL == hosts)
hosts = zbx_malloc(hosts, sizeof(ZBX_FPING_HOST) * hosts_alloc);
for (i = 0; i < items_count; i++)
{
add_pinger_host(&hosts, &hosts_alloc, &hosts_count, items[i].addr);
if (i == items_count - 1 || items[i].count != items[i + 1].count || items[i].interval != items[i + 1].interval ||
items[i].size != items[i + 1].size || items[i].timeout != items[i + 1].timeout)
{
zbx_setproctitle("%s #%d [pinging hosts]", get_process_type_string(process_type), process_num);
zbx_timespec(&ts);
ping_result = do_ping(hosts, hosts_count,
items[i].count, items[i].interval, items[i].size, items[i].timeout,
error, sizeof(error));
process_values(items, first_index, i + 1, hosts, hosts_count, &ts, ping_result, error);
hosts_count = 0;
first_index = i + 1;
}
}
zabbix_log(LOG_LEVEL_DEBUG, "End of %s()", __function_name);
}
void main_housekeeper_loop()
{
int now, d_history_and_trends, d_cleanup, d_events, d_alerts, d_sessions;
for (;;)
{
zabbix_log(LOG_LEVEL_WARNING, "executing housekeeper");
now = time(NULL);
zbx_setproctitle("%s [connecting to the database]", get_process_type_string(process_type));
DBconnect(ZBX_DB_CONNECT_NORMAL);
zbx_setproctitle("%s [removing old history and trends]", get_process_type_string(process_type));
d_history_and_trends = housekeeping_history_and_trends(now);
zbx_setproctitle("%s [removing deleted items data]", get_process_type_string(process_type));
d_cleanup = housekeeping_cleanup();
zbx_setproctitle("%s [removing old events]", get_process_type_string(process_type));
d_events = housekeeping_events(now);
zbx_setproctitle("%s [removing old alerts]", get_process_type_string(process_type));
d_alerts = housekeeping_alerts(now);
zbx_setproctitle("%s [removing old sessions]", get_process_type_string(process_type));
d_sessions = housekeeping_sessions(now);
zabbix_log(LOG_LEVEL_WARNING, "housekeeper deleted: %d records from history and trends,"
" %d records of deleted items, %d events, %d alerts, %d sessions",
d_history_and_trends, d_cleanup, d_events, d_alerts, d_sessions);
DBclose();
zbx_sleep_loop(CONFIG_HOUSEKEEPING_FREQUENCY * SEC_PER_HOUR);
}
}
/******************************************************************************
* *
* Function: user1_signal_handler *
* *
* Purpose: handle user signal SIGUSR1 *
* *
******************************************************************************/
static void user1_signal_handler(int sig, siginfo_t *siginfo, void *context)
{
#ifdef HAVE_SIGQUEUE
int flags, process_num, found = 0, i;
union sigval s;
unsigned char process_type;
#endif
SIG_CHECK_PARAMS(sig, siginfo, context);
zabbix_log(LOG_LEVEL_DEBUG, "Got signal [signal:%d(%s),sender_pid:%d,sender_uid:%d,value_int:%d(0x%08x)].",
sig, get_signal_name(sig),
SIG_CHECKED_FIELD(siginfo, si_pid),
SIG_CHECKED_FIELD(siginfo, si_uid),
SIG_CHECKED_FIELD(siginfo, si_value.ZBX_SIVAL_INT),
SIG_CHECKED_FIELD(siginfo, si_value.ZBX_SIVAL_INT));
#ifdef HAVE_SIGQUEUE
flags = SIG_CHECKED_FIELD(siginfo, si_value.ZBX_SIVAL_INT);
if (!SIG_PARENT_PROCESS)
{
common_sigusr_handler(flags);
}
else if (NULL == threads)
{
zabbix_log(LOG_LEVEL_ERR, "cannot redirect signal: shutdown in progress");
}
else if (ZBX_RTC_CONFIG_CACHE_RELOAD == ZBX_RTC_GET_MSG(flags))
{
extern unsigned char daemon_type;
if (0 != (daemon_type & ZBX_DAEMON_TYPE_PROXY_PASSIVE))
{
zabbix_log(LOG_LEVEL_WARNING, "forced reloading of the configuration cache"
" cannot be performed for a passive proxy");
return;
}
for (i = 0; i < threads_num; i++)
{
if (FAIL == get_process_info_by_thread(i + 1, &process_type, &process_num))
continue;
if (ZBX_PROCESS_TYPE_CONFSYNCER == process_type)
break;
}
if (i != threads_num)
{
s.ZBX_SIVAL_INT = flags;
if (-1 != sigqueue(threads[i], SIGUSR1, s))
zabbix_log(LOG_LEVEL_DEBUG, "the signal was redirected to the configuration syncer");
else
zabbix_log(LOG_LEVEL_ERR, "cannot redirect signal: %s", zbx_strerror(errno));
}
else
zabbix_log(LOG_LEVEL_ERR, "cannot redirect signal to configuration syncer: process not found");
}
else if (ZBX_RTC_LOG_LEVEL_INCREASE == ZBX_RTC_GET_MSG(flags) ||
ZBX_RTC_LOG_LEVEL_DECREASE == ZBX_RTC_GET_MSG(flags))
{
s.ZBX_SIVAL_INT = flags;
if ((ZBX_RTC_LOG_SCOPE_FLAG | ZBX_RTC_LOG_SCOPE_PID) == ZBX_RTC_GET_SCOPE(flags))
{
for (i = 0; i < threads_num; i++)
{
if (0 != ZBX_RTC_GET_DATA(flags) && threads[i] != ZBX_RTC_GET_DATA(flags))
continue;
found = 1;
if (-1 != sigqueue(threads[i], SIGUSR1, s))
{
zabbix_log(LOG_LEVEL_DEBUG, "the signal was redirected to process pid:%d",
threads[i]);
}
else
zabbix_log(LOG_LEVEL_ERR, "cannot redirect signal: %s", zbx_strerror(errno));
}
if (0 != ZBX_RTC_GET_DATA(flags) && 0 == found)
{
zabbix_log(LOG_LEVEL_ERR, "cannot redirect signal: process pid:%d is not a Zabbix child"
" process", ZBX_RTC_GET_DATA(flags));
}
}
else
{
for (i = 0; i < threads_num; i++)
{
if (FAIL == get_process_info_by_thread(i + 1, &process_type, &process_num))
break;
if (ZBX_RTC_GET_SCOPE(flags) != process_type)
{
/* check if we have already checked processes of target type */
if (1 == found)
break;
continue;
}
if (0 != ZBX_RTC_GET_DATA(flags) && ZBX_RTC_GET_DATA(flags) != process_num)
continue;
found = 1;
if (-1 != sigqueue(threads[i], SIGUSR1, s))
{
zabbix_log(LOG_LEVEL_DEBUG, "the signal was redirected to \"%s\" process"
" pid:%d", get_process_type_string(process_type), threads[i]);
}
else
zabbix_log(LOG_LEVEL_ERR, "cannot redirect signal: %s", zbx_strerror(errno));
}
if (0 == found)
{
if (0 == ZBX_RTC_GET_DATA(flags))
{
zabbix_log(LOG_LEVEL_ERR, "cannot redirect signal:"
" \"%s\" process does not exist",
get_process_type_string(ZBX_RTC_GET_SCOPE(flags)));
}
else
{
zabbix_log(LOG_LEVEL_ERR, "cannot redirect signal:"
" \"%s #%d\" process does not exist",
get_process_type_string(ZBX_RTC_GET_SCOPE(flags)),
ZBX_RTC_GET_DATA(flags));
}
}
}
}
#endif
}
/******************************************************************************
* *
* Function: main_alerter_loop *
* *
* Purpose: periodically check table alerts and send notifications if needed *
* *
* Parameters: *
* *
* Return value: *
* *
* Author: Alexei Vladishev *
* *
* Comments: never returns *
* *
******************************************************************************/
void main_alerter_loop()
{
char error[MAX_STRING_LEN], *error_esc;
int res, now;
DB_RESULT result;
DB_ROW row;
DB_ALERT alert;
DB_MEDIATYPE mediatype;
set_child_signal_handler();
zbx_setproctitle("%s [connecting to the database]", get_process_type_string(process_type));
DBconnect(ZBX_DB_CONNECT_NORMAL);
for (;;)
{
zbx_setproctitle("%s [sending alerts]", get_process_type_string(process_type));
now = time(NULL);
result = DBselect("select a.alertid,a.mediatypeid,a.sendto,a.subject,a.message,a.status,mt.mediatypeid"
",mt.type,mt.description,mt.smtp_server,mt.smtp_helo,mt.smtp_email,mt.exec_path"
",mt.gsm_modem,mt.username,mt.passwd,a.retries from alerts a,media_type mt"
" where a.status=%d and a.mediatypeid=mt.mediatypeid and a.alerttype=%d" DB_NODE
" order by a.clock",
ALERT_STATUS_NOT_SENT,
ALERT_TYPE_MESSAGE,
DBnode_local("mt.mediatypeid"));
while (NULL != (row = DBfetch(result)))
{
ZBX_STR2UINT64(alert.alertid, row[0]);
alert.mediatypeid = atoi(row[1]);
alert.sendto = row[2];
alert.subject = row[3];
alert.message = row[4];
alert.status = atoi(row[5]);
ZBX_STR2UINT64(mediatype.mediatypeid, row[6]);
mediatype.type = atoi(row[7]);
mediatype.description = row[8];
mediatype.smtp_server = row[9];
mediatype.smtp_helo = row[10];
mediatype.smtp_email = row[11];
mediatype.exec_path = row[12];
mediatype.gsm_modem = row[13];
mediatype.username = row[14];
mediatype.passwd = row[15];
alert.retries = atoi(row[16]);
*error = '\0';
res = execute_action(&alert, &mediatype, error, sizeof(error));
if (res == SUCCEED)
{
zabbix_log(LOG_LEVEL_DEBUG, "Alert ID [" ZBX_FS_UI64 "] was sent successfully",
alert.alertid);
DBexecute("update alerts set status=%d,error='' where alertid=" ZBX_FS_UI64,
ALERT_STATUS_SENT,
alert.alertid);
}
else
{
zabbix_log(LOG_LEVEL_DEBUG, "Error sending alert ID [" ZBX_FS_UI64 "]",
alert.alertid);
zabbix_syslog("Error sending alert ID [" ZBX_FS_UI64 "]",
alert.alertid);
error_esc = DBdyn_escape_string_len(error, ALERT_ERROR_LEN);
alert.retries++;
if (alert.retries < ALERT_MAX_RETRIES)
{
DBexecute("update alerts set retries=%d,error='%s' where alertid=" ZBX_FS_UI64,
alert.retries,
error_esc,
alert.alertid);
}
else
{
DBexecute("update alerts set status=%d,retries=%d,error='%s' where alertid=" ZBX_FS_UI64,
ALERT_STATUS_FAILED,
alert.retries,
error_esc,
alert.alertid);
}
zbx_free(error_esc);
}
}
DBfree_result(result);
zbx_sleep_loop(CONFIG_SENDER_FREQUENCY);
}
}
ZBX_THREAD_ENTRY(housekeeper_thread, args)
{
int records, start, sleeptime;
double sec, time_slept;
char sleeptext[25];
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);
if (0 == CONFIG_HOUSEKEEPING_FREQUENCY)
{
zbx_setproctitle("%s [waiting for user command]", get_process_type_string(process_type));
zbx_snprintf(sleeptext, sizeof(sleeptext), "waiting for user command");
}
else
{
sleeptime = HOUSEKEEPER_STARTUP_DELAY * SEC_PER_MIN;
zbx_setproctitle("%s [startup idle for %d minutes]", get_process_type_string(process_type),
HOUSEKEEPER_STARTUP_DELAY);
zbx_snprintf(sleeptext, sizeof(sleeptext), "idle for %d hour(s)", CONFIG_HOUSEKEEPING_FREQUENCY);
}
zbx_set_sigusr_handler(zbx_housekeeper_sigusr_handler);
for (;;)
{
sec = zbx_time();
if (0 == CONFIG_HOUSEKEEPING_FREQUENCY)
zbx_sleep_forever();
else
zbx_sleep_loop(sleeptime);
time_slept = zbx_time() - sec;
hk_period = get_housekeeper_period(time_slept);
start = time(NULL);
zabbix_log(LOG_LEVEL_WARNING, "executing housekeeper");
zbx_setproctitle("%s [connecting to the database]", get_process_type_string(process_type));
DBconnect(ZBX_DB_CONNECT_NORMAL);
zbx_setproctitle("%s [removing old history]", get_process_type_string(process_type));
sec = zbx_time();
records = housekeeping_history(start);
sec = zbx_time() - sec;
DBclose();
zabbix_log(LOG_LEVEL_WARNING, "%s [deleted %d records in " ZBX_FS_DBL " sec, %s]",
get_process_type_string(process_type), records, sec, sleeptext);
zbx_setproctitle("%s [deleted %d records in " ZBX_FS_DBL " sec, %s]",
get_process_type_string(process_type), records, sec, sleeptext);
if (0 != CONFIG_HOUSEKEEPING_FREQUENCY)
sleeptime = CONFIG_HOUSEKEEPING_FREQUENCY * SEC_PER_HOUR;
}
}
/******************************************************************************
* *
* Function: main_dbsyncer_loop *
* *
* Purpose: periodically synchronises data in memory cache with database *
* *
* Author: Alexei Vladishev *
* *
* Comments: never returns *
* *
******************************************************************************/
void main_dbsyncer_loop()
{
int sleeptime, last_sleeptime = -1, num;
double sec;
int retry_up = 0, retry_dn = 0;
zabbix_log(LOG_LEVEL_DEBUG, "In main_dbsyncer_loop() process_num:%d", process_num);
zbx_setproctitle("%s [connecting to the database]", get_process_type_string(process_type));
DBconnect(ZBX_DB_CONNECT_NORMAL);
for (;;)
{
zbx_setproctitle("%s [syncing history]", get_process_type_string(process_type));
zabbix_log(LOG_LEVEL_DEBUG, "Syncing ...");
sec = zbx_time();
num = DCsync_history(ZBX_SYNC_PARTIAL);
sec = zbx_time() - sec;
zabbix_log(LOG_LEVEL_DEBUG, "%s #%d spent " ZBX_FS_DBL " seconds while processing %d items",
get_process_type_string(process_type), process_num, sec, num);
if (-1 == last_sleeptime)
{
sleeptime = num ? ZBX_SYNC_MAX / num : CONFIG_HISTSYNCER_FREQUENCY;
}
else
{
sleeptime = last_sleeptime;
if (ZBX_SYNC_MAX < num)
{
retry_up = 0;
retry_dn++;
}
else if (ZBX_SYNC_MAX / 2 > num)
{
retry_up++;
retry_dn = 0;
}
else
retry_up = retry_dn = 0;
if (2 < retry_dn)
{
sleeptime--;
retry_dn = 0;
}
if (2 < retry_up)
{
sleeptime++;
retry_up = 0;
}
}
if (0 > sleeptime)
sleeptime = 0;
else if (CONFIG_HISTSYNCER_FREQUENCY < sleeptime)
sleeptime = CONFIG_HISTSYNCER_FREQUENCY;
last_sleeptime = sleeptime;
zbx_sleep_loop(sleeptime);
}
}
/******************************************************************************
* *
* Function: main_timer_loop *
* *
* Purpose: periodically updates time-related triggers *
* *
* Parameters: *
* *
* Return value: *
* *
* Author: Alexei Vladishev *
* *
* Comments: does update once per 30 seconds (hardcoded) *
* *
******************************************************************************/
void main_timer_loop(void)
{
int now, nextcheck, sleeptime = -1,
triggers_count = 0, events_count = 0, hm_count = 0,
old_triggers_count = 0, old_events_count = 0, old_hm_count = 0,
tr_count, ev_count;
double sec = 0.0, sec_maint = 0.0,
total_sec = 0.0, total_sec_maint = 0.0,
old_total_sec = 0.0, old_total_sec_maint = 0.0;
time_t last_stat_time;
#define STAT_INTERVAL 5 /* if a process is busy and does not sleep then update status not faster than */
/* once in STAT_INTERVAL seconds */
zbx_setproctitle("%s #%d [connecting to the database]", get_process_type_string(process_type), process_num);
last_stat_time = time(NULL);
DBconnect(ZBX_DB_CONNECT_NORMAL);
for (;;)
{
now = time(NULL);
nextcheck = now + TIMER_DELAY - (now % TIMER_DELAY);
sleeptime = nextcheck - now;
if (0 != sleeptime || STAT_INTERVAL <= time(NULL) - last_stat_time)
{
if (0 == sleeptime)
{
if (1 != process_num)
{
zbx_setproctitle("%s #%d [processed %d triggers, %d events in " ZBX_FS_DBL
" sec, processing time functions]",
get_process_type_string(process_type), process_num,
triggers_count, events_count, total_sec);
}
else
{
zbx_setproctitle("%s #1 [processed %d triggers, %d events in " ZBX_FS_DBL
" sec, %d maint.periods in " ZBX_FS_DBL " sec, processing time "
"functions]",
get_process_type_string(process_type),
triggers_count, events_count, total_sec, hm_count,
total_sec_maint);
}
}
else
{
if (1 != process_num)
{
zbx_setproctitle("%s #%d [processed %d triggers, %d events in " ZBX_FS_DBL
" sec, idle %d sec]",
get_process_type_string(process_type), process_num,
triggers_count, events_count, total_sec, sleeptime);
}
else
{
zbx_setproctitle("%s #1 [processed %d triggers, %d events in " ZBX_FS_DBL
" sec, %d maint.periods in " ZBX_FS_DBL " sec, idle %d sec]",
get_process_type_string(process_type),
triggers_count, events_count, total_sec, hm_count,
total_sec_maint, sleeptime);
old_hm_count = hm_count;
old_total_sec_maint = total_sec_maint;
}
old_triggers_count = triggers_count;
old_events_count = events_count;
old_total_sec = total_sec;
}
triggers_count = 0;
events_count = 0;
hm_count = 0;
total_sec = 0.0;
total_sec_maint = 0.0;
last_stat_time = time(NULL);
}
zbx_sleep_loop(sleeptime);
if (0 != sleeptime)
{
if (1 != process_num)
{
zbx_setproctitle("%s #%d [processed %d triggers, %d events in " ZBX_FS_DBL
" sec, processing time functions]",
get_process_type_string(process_type), process_num,
old_triggers_count, old_events_count, old_total_sec);
}
else
{
zbx_setproctitle("%s #1 [processed %d triggers, %d events in " ZBX_FS_DBL
" sec, %d maint.periods in " ZBX_FS_DBL " sec, processing time "
"functions]",
get_process_type_string(process_type),
old_triggers_count, old_events_count, old_total_sec, old_hm_count,
old_total_sec_maint);
}
}
sec = zbx_time();
tr_count = 0;
ev_count = 0;
process_time_functions(&tr_count, &ev_count);
triggers_count += tr_count;
events_count += ev_count;
total_sec += zbx_time() - sec;
/* only the "timer #1" process evaluates the maintenance periods */
if (1 != process_num)
continue;
/* we process maintenance at every 00 sec */
/* process time functions can take long time */
if (0 == nextcheck % SEC_PER_MIN || nextcheck + SEC_PER_MIN - (nextcheck % SEC_PER_MIN) <= time(NULL))
{
zbx_setproctitle("%s #1 [processed %d triggers, %d events in " ZBX_FS_DBL
" sec, %d maint.periods in " ZBX_FS_DBL " sec, processing maintenance periods]",
get_process_type_string(process_type),
triggers_count, events_count, total_sec, old_hm_count,
old_total_sec_maint);
sec_maint = zbx_time();
hm_count += process_maintenance();
total_sec_maint += zbx_time() - sec_maint;
}
}
#undef STAT_INTERVAL
}
/******************************************************************************
* *
* Function: main_alerter_loop *
* *
* Purpose: periodically check table alerts and send notifications if needed *
* *
* Author: Alexei Vladishev *
* *
******************************************************************************/
ZBX_THREAD_ENTRY(alerter_thread, args)
{
char error[MAX_STRING_LEN], *error_esc;
int res, alerts_success, alerts_fail;
double sec;
DB_RESULT result;
DB_ROW row;
DB_ALERT alert;
DB_MEDIATYPE mediatype;
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_setproctitle("%s [connecting to the database]", get_process_type_string(process_type));
DBconnect(ZBX_DB_CONNECT_NORMAL);
for (;;)
{
zbx_setproctitle("%s [sending alerts]", get_process_type_string(process_type));
sec = zbx_time();
alerts_success = alerts_fail = 0;
result = DBselect(
"select a.alertid,a.mediatypeid,a.sendto,a.subject,a.message,a.status,mt.mediatypeid,"
"mt.type,mt.description,mt.smtp_server,mt.smtp_helo,mt.smtp_email,mt.exec_path,"
"mt.gsm_modem,mt.username,mt.passwd,mt.smtp_port,mt.smtp_security,"
"mt.smtp_verify_peer,mt.smtp_verify_host,mt.smtp_authentication,a.retries"
" from alerts a,media_type mt"
" where a.mediatypeid=mt.mediatypeid"
" and a.status=%d"
" and a.alerttype=%d"
" order by a.alertid",
ALERT_STATUS_NOT_SENT,
ALERT_TYPE_MESSAGE);
while (NULL != (row = DBfetch(result)))
{
ZBX_STR2UINT64(alert.alertid, row[0]);
ZBX_STR2UINT64(alert.mediatypeid, row[1]);
alert.sendto = row[2];
alert.subject = row[3];
alert.message = row[4];
alert.status = atoi(row[5]);
ZBX_STR2UINT64(mediatype.mediatypeid, row[6]);
mediatype.type = atoi(row[7]);
mediatype.description = row[8];
mediatype.smtp_server = row[9];
mediatype.smtp_helo = row[10];
mediatype.smtp_email = row[11];
mediatype.exec_path = row[12];
mediatype.gsm_modem = row[13];
mediatype.username = row[14];
mediatype.passwd = row[15];
mediatype.smtp_port = (unsigned short)atoi(row[16]);
ZBX_STR2UCHAR(mediatype.smtp_security, row[17]);
ZBX_STR2UCHAR(mediatype.smtp_verify_peer, row[18]);
ZBX_STR2UCHAR(mediatype.smtp_verify_host, row[19]);
ZBX_STR2UCHAR(mediatype.smtp_authentication, row[20]);
alert.retries = atoi(row[21]);
*error = '\0';
res = execute_action(&alert, &mediatype, error, sizeof(error));
if (SUCCEED == res)
{
zabbix_log(LOG_LEVEL_DEBUG, "alert ID [" ZBX_FS_UI64 "] was sent successfully",
alert.alertid);
DBexecute("update alerts set status=%d,error='' where alertid=" ZBX_FS_UI64,
ALERT_STATUS_SENT, alert.alertid);
alerts_success++;
}
else
{
zabbix_log(LOG_LEVEL_DEBUG, "error sending alert ID [" ZBX_FS_UI64 "]", alert.alertid);
error_esc = DBdyn_escape_string_len(error, ALERT_ERROR_LEN);
alert.retries++;
if (ALERT_MAX_RETRIES > alert.retries)
{
DBexecute("update alerts set retries=%d,error='%s' where alertid=" ZBX_FS_UI64,
alert.retries, error_esc, alert.alertid);
}
else
{
DBexecute("update alerts set status=%d,retries=%d,error='%s' where alertid=" ZBX_FS_UI64,
ALERT_STATUS_FAILED, alert.retries, error_esc, alert.alertid);
}
zbx_free(error_esc);
alerts_fail++;
}
}
DBfree_result(result);
sec = zbx_time() - sec;
zbx_setproctitle("%s [sent alerts: %d success, %d fail in " ZBX_FS_DBL " sec, idle %d sec]",
get_process_type_string(process_type), alerts_success, alerts_fail, sec,
CONFIG_SENDER_FREQUENCY);
zbx_sleep_loop(CONFIG_SENDER_FREQUENCY);
}
}
/******************************************************************************
* *
* Function: get_value_internal *
* *
* Purpose: retrieve data from Zabbix server (internally supported items) *
* *
* Parameters: item - item we are interested in *
* *
* Return value: SUCCEED - data successfully retrieved and stored in result *
* NOTSUPPORTED - requested item is not supported *
* *
* Author: Alexei Vladishev *
* *
******************************************************************************/
int get_value_internal(DC_ITEM *item, AGENT_RESULT *result)
{
int nparams;
char params[MAX_STRING_LEN], *error = NULL;
char tmp[MAX_STRING_LEN], tmp1[HOST_HOST_LEN_MAX];
init_result(result);
if (0 != strncmp(item->key, "zabbix[", 7))
goto notsupported;
if (2 != parse_command(item->key, NULL, 0, params, sizeof(params)))
goto notsupported;
if (0 != get_param(params, 1, tmp, sizeof(tmp)))
goto notsupported;
nparams = num_param(params);
if (0 == strcmp(tmp, "triggers")) /* zabbix["triggers"] */
{
if (1 != nparams)
goto notsupported;
SET_UI64_RESULT(result, DBget_row_count("triggers"));
}
else if (0 == strcmp(tmp, "items")) /* zabbix["items"] */
{
if (1 != nparams)
goto notsupported;
SET_UI64_RESULT(result, DBget_row_count("items"));
}
else if (0 == strcmp(tmp, "items_unsupported")) /* zabbix["items_unsupported"] */
{
if (1 != nparams)
goto notsupported;
SET_UI64_RESULT(result, DBget_items_unsupported_count());
}
else if (0 == strcmp(tmp, "history") || /* zabbix["history"] */
0 == strcmp(tmp, "history_log") || /* zabbix["history_log"] */
0 == strcmp(tmp, "history_str") || /* zabbix["history_str"] */
0 == strcmp(tmp, "history_text") || /* zabbix["history_text"] */
0 == strcmp(tmp, "history_uint")) /* zabbix["history_uint"] */
{
if (1 != nparams)
goto notsupported;
SET_UI64_RESULT(result, DBget_row_count(tmp));
}
else if (0 == strcmp(tmp, "trends") || /* zabbix["trends"] */
0 == strcmp(tmp, "trends_uint")) /* zabbix["trends_uint"] */
{
if (1 != nparams)
goto notsupported;
SET_UI64_RESULT(result, DBget_row_count(tmp));
}
else if (0 == strcmp(tmp, "queue")) /* zabbix["queue",<from>,<to>] */
{
unsigned int from = 6, to = (unsigned int)-1;
if (3 < nparams)
{
error = zbx_strdup(error, "Invalid number of parameters");
goto notsupported;
}
if (2 <= nparams)
{
if (0 != get_param(params, 2, tmp, sizeof(tmp)))
goto notsupported;
if ('\0' != *tmp && FAIL == is_uint_suffix(tmp, &from))
{
error = zbx_strdup(error, "Invalid second parameter");
goto notsupported;
}
}
if (3 <= nparams)
{
if (0 != get_param(params, 3, tmp, sizeof(tmp)))
goto notsupported;
if ('\0' != *tmp && FAIL == is_uint_suffix(tmp, &to))
{
error = zbx_strdup(error, "Invalid third parameter");
goto notsupported;
}
}
if ((unsigned int)-1 != to && from > to)
{
error = zbx_strdup(error, "Parameters represent an invalid interval");
goto notsupported;
}
SET_UI64_RESULT(result, DBget_queue_count((int)from, (int)to));
}
else if (0 == strcmp(tmp, "requiredperformance")) /* zabbix["requiredperformance"] */
{
if (1 != nparams)
goto notsupported;
SET_DBL_RESULT(result, DBget_requiredperformance());
}
else if (0 == strcmp(tmp, "uptime")) /* zabbix["uptime"] */
{
if (1 != nparams)
goto notsupported;
SET_UI64_RESULT(result, time(NULL) - CONFIG_SERVER_STARTUP_TIME);
}
else if (0 == strcmp(tmp, "boottime")) /* zabbix["boottime"] */
{
if (1 != nparams)
goto notsupported;
SET_UI64_RESULT(result, CONFIG_SERVER_STARTUP_TIME);
}
else if (0 == strcmp(tmp, "host")) /* zabbix["host",<type>,"available"] */
{
if (3 != nparams)
goto notsupported;
if (0 != get_param(params, 3, tmp, sizeof(tmp)) || 0 != strcmp(tmp, "available"))
goto notsupported;
if (0 != get_param(params, 2, tmp, sizeof(tmp)))
goto notsupported;
if (0 == strcmp(tmp, "agent"))
SET_UI64_RESULT(result, item->host.available);
else if (0 == strcmp(tmp, "snmp"))
SET_UI64_RESULT(result, item->host.snmp_available);
else if (0 == strcmp(tmp, "ipmi"))
SET_UI64_RESULT(result, item->host.ipmi_available);
else if (0 == strcmp(tmp, "jmx"))
SET_UI64_RESULT(result, item->host.jmx_available);
else
goto notsupported;
result->ui64 = 2 - result->ui64;
}
else if (0 == strcmp(tmp, "proxy")) /* zabbix["proxy",<hostname>,"lastaccess"] */
{
int lastaccess;
if (3 != nparams)
goto notsupported;
if (0 != get_param(params, 2, tmp1, sizeof(tmp1)))
goto notsupported;
if (0 != get_param(params, 3, tmp, sizeof(tmp)) || 0 != strcmp(tmp, "lastaccess"))
goto notsupported;
if (FAIL == DBget_proxy_lastaccess(tmp1, &lastaccess, &error))
goto notsupported;
SET_UI64_RESULT(result, lastaccess);
}
else if (0 == strcmp(tmp, "java")) /* zabbix["java",...] */
{
int res;
alarm(CONFIG_TIMEOUT);
res = get_value_java(ZBX_JAVA_GATEWAY_REQUEST_INTERNAL, item, result);
alarm(0);
if (SUCCEED != res)
goto notsupported;
}
else if (0 == strcmp(tmp, "process")) /* zabbix["process",<type>,<mode>,<state>] */
{
unsigned char process_type;
int process_forks;
double value;
if (4 < nparams)
{
error = zbx_strdup(error, "Invalid number of parameters");
goto notsupported;
}
if (0 != get_param(params, 2, tmp, sizeof(tmp)))
{
error = zbx_strdup(error, "Required second parameter missing");
goto notsupported;
}
for (process_type = 0; process_type < ZBX_PROCESS_TYPE_COUNT; process_type++)
if (0 == strcmp(tmp, get_process_type_string(process_type)))
break;
if (ZBX_PROCESS_TYPE_COUNT == process_type)
{
error = zbx_strdup(error, "Invalid second parameter");
goto notsupported;
}
process_forks = get_process_type_forks(process_type);
if (0 != get_param(params, 3, tmp, sizeof(tmp)))
*tmp = '\0';
if (0 == strcmp(tmp, "count"))
{
if (3 < nparams)
{
error = zbx_strdup(error, "Invalid number of parameters");
goto notsupported;
}
SET_UI64_RESULT(result, process_forks);
}
else
{
unsigned char aggr_func, state;
unsigned short process_num = 0;
if ('\0' == *tmp || 0 == strcmp(tmp, "avg"))
aggr_func = ZBX_AGGR_FUNC_AVG;
else if (0 == strcmp(tmp, "max"))
aggr_func = ZBX_AGGR_FUNC_MAX;
else if (0 == strcmp(tmp, "min"))
aggr_func = ZBX_AGGR_FUNC_MIN;
else if (SUCCEED == is_ushort(tmp, &process_num) && 0 < process_num)
aggr_func = ZBX_AGGR_FUNC_ONE;
else
{
error = zbx_strdup(error, "Invalid third parameter");
goto notsupported;
}
if (0 == process_forks)
{
error = zbx_dsprintf(error, "No \"%s\" processes started",
get_process_type_string(process_type));
goto notsupported;
}
else if (process_num > process_forks)
{
error = zbx_dsprintf(error, "\"%s\" #%d is not started",
get_process_type_string(process_type), process_num);
goto notsupported;
}
if (0 != get_param(params, 4, tmp, sizeof(tmp)))
*tmp = '\0';
if ('\0' == *tmp || 0 == strcmp(tmp, "busy"))
state = ZBX_PROCESS_STATE_BUSY;
else if (0 == strcmp(tmp, "idle"))
state = ZBX_PROCESS_STATE_IDLE;
else
{
error = zbx_strdup(error, "Invalid fourth parameter");
goto notsupported;
}
get_selfmon_stats(process_type, aggr_func, process_num, state, &value);
SET_DBL_RESULT(result, value);
}
}
else if (0 == strcmp(tmp, "wcache")) /* zabbix[wcache,<cache>,<mode>] */
{
if (3 < nparams)
goto notsupported;
if (0 != get_param(params, 2, tmp, sizeof(tmp)))
goto notsupported;
if (0 != get_param(params, 3, tmp1, sizeof(tmp1)))
*tmp1 = '\0';
if (0 == strcmp(tmp, "values"))
{
if ('\0' == *tmp1 || 0 == strcmp(tmp1, "all"))
SET_UI64_RESULT(result, *(zbx_uint64_t *)DCget_stats(ZBX_STATS_HISTORY_COUNTER));
else if (0 == strcmp(tmp1, "float"))
SET_UI64_RESULT(result, *(zbx_uint64_t *)DCget_stats(ZBX_STATS_HISTORY_FLOAT_COUNTER));
else if (0 == strcmp(tmp1, "uint"))
SET_UI64_RESULT(result, *(zbx_uint64_t *)DCget_stats(ZBX_STATS_HISTORY_UINT_COUNTER));
else if (0 == strcmp(tmp1, "str"))
SET_UI64_RESULT(result, *(zbx_uint64_t *)DCget_stats(ZBX_STATS_HISTORY_STR_COUNTER));
else if (0 == strcmp(tmp1, "log"))
SET_UI64_RESULT(result, *(zbx_uint64_t *)DCget_stats(ZBX_STATS_HISTORY_LOG_COUNTER));
else if (0 == strcmp(tmp1, "text"))
SET_UI64_RESULT(result, *(zbx_uint64_t *)DCget_stats(ZBX_STATS_HISTORY_TEXT_COUNTER));
else if (0 == strcmp(tmp1, "not supported"))
SET_UI64_RESULT(result, *(zbx_uint64_t *)DCget_stats(ZBX_STATS_NOTSUPPORTED_COUNTER));
else
goto notsupported;
}
else if (0 == strcmp(tmp, "history"))
{
if ('\0' == *tmp1 || 0 == strcmp(tmp1, "pfree"))
SET_DBL_RESULT(result, *(double *)DCget_stats(ZBX_STATS_HISTORY_PFREE));
else if (0 == strcmp(tmp1, "total"))
SET_UI64_RESULT(result, *(zbx_uint64_t *)DCget_stats(ZBX_STATS_HISTORY_TOTAL));
else if (0 == strcmp(tmp1, "used"))
SET_UI64_RESULT(result, *(zbx_uint64_t *)DCget_stats(ZBX_STATS_HISTORY_USED));
else if (0 == strcmp(tmp1, "free"))
SET_UI64_RESULT(result, *(zbx_uint64_t *)DCget_stats(ZBX_STATS_HISTORY_FREE));
else
goto notsupported;
}
else if (0 == strcmp(tmp, "trend"))
{
if ('\0' == *tmp1 || 0 == strcmp(tmp1, "pfree"))
SET_DBL_RESULT(result, *(double *)DCget_stats(ZBX_STATS_TREND_PFREE));
else if (0 == strcmp(tmp1, "total"))
SET_UI64_RESULT(result, *(zbx_uint64_t *)DCget_stats(ZBX_STATS_TREND_TOTAL));
else if (0 == strcmp(tmp1, "used"))
SET_UI64_RESULT(result, *(zbx_uint64_t *)DCget_stats(ZBX_STATS_TREND_USED));
else if (0 == strcmp(tmp1, "free"))
SET_UI64_RESULT(result, *(zbx_uint64_t *)DCget_stats(ZBX_STATS_TREND_FREE));
else
goto notsupported;
}
else if (0 == strcmp(tmp, "text"))
{
if ('\0' == *tmp1 || 0 == strcmp(tmp1, "pfree"))
SET_DBL_RESULT(result, *(double *)DCget_stats(ZBX_STATS_TEXT_PFREE));
else if (0 == strcmp(tmp1, "total"))
SET_UI64_RESULT(result, *(zbx_uint64_t *)DCget_stats(ZBX_STATS_TEXT_TOTAL));
else if (0 == strcmp(tmp1, "used"))
SET_UI64_RESULT(result, *(zbx_uint64_t *)DCget_stats(ZBX_STATS_TEXT_USED));
else if (0 == strcmp(tmp1, "free"))
SET_UI64_RESULT(result, *(zbx_uint64_t *)DCget_stats(ZBX_STATS_TEXT_FREE));
else
goto notsupported;
}
else
goto notsupported;
}
else if (0 == strcmp(tmp, "rcache")) /* zabbix[rcache,<cache>,<mode>] */
{
if (3 < nparams)
goto notsupported;
if (0 != get_param(params, 2, tmp, sizeof(tmp)))
goto notsupported;
if (0 != get_param(params, 3, tmp1, sizeof(tmp1)))
*tmp1 = '\0';
if (0 == strcmp(tmp, "buffer"))
{
if ('\0' == *tmp1 || 0 == strcmp(tmp1, "pfree"))
SET_DBL_RESULT(result, *(double *)DCconfig_get_stats(ZBX_CONFSTATS_BUFFER_PFREE));
else if (0 == strcmp(tmp1, "total"))
SET_UI64_RESULT(result, *(zbx_uint64_t *)DCconfig_get_stats(ZBX_CONFSTATS_BUFFER_TOTAL));
else if (0 == strcmp(tmp1, "used"))
SET_UI64_RESULT(result, *(zbx_uint64_t *)DCconfig_get_stats(ZBX_CONFSTATS_BUFFER_USED));
else if (0 == strcmp(tmp1, "free"))
SET_UI64_RESULT(result, *(zbx_uint64_t *)DCconfig_get_stats(ZBX_CONFSTATS_BUFFER_FREE));
else
goto notsupported;
}
else
goto notsupported;
}
else
goto notsupported;
return SUCCEED;
notsupported:
if (!ISSET_MSG(result))
{
if (NULL == error)
error = zbx_strdup(error, "Internal check is not supported");
SET_MSG_RESULT(result, error);
}
return NOTSUPPORTED;
}
ZBX_THREAD_ENTRY(listener_thread, args)
{
#if defined(HAVE_POLARSSL) || defined(HAVE_GNUTLS) || defined(HAVE_OPENSSL)
char *msg = NULL;
#endif
int ret;
zbx_socket_t s;
assert(args);
assert(((zbx_thread_args_t *)args)->args);
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_program_type_string(program_type),
server_num, get_process_type_string(process_type), process_num);
memcpy(&s, (zbx_socket_t *)((zbx_thread_args_t *)args)->args, sizeof(zbx_socket_t));
zbx_free(args);
#if defined(HAVE_POLARSSL) || defined(HAVE_GNUTLS) || defined(HAVE_OPENSSL)
zbx_tls_init_child();
#endif
while (ZBX_IS_RUNNING())
{
zbx_setproctitle("listener #%d [waiting for connection]", process_num);
ret = zbx_tcp_accept(&s, configured_tls_accept_modes);
zbx_update_env(zbx_time());
if (SUCCEED == ret)
{
zbx_setproctitle("listener #%d [processing request]", process_num);
if ('\0' != *CONFIG_HOSTS_ALLOWED &&
SUCCEED == (ret = zbx_tcp_check_allowed_peers(&s, CONFIG_HOSTS_ALLOWED)))
{
#if defined(HAVE_POLARSSL) || defined(HAVE_GNUTLS) || defined(HAVE_OPENSSL)
if (ZBX_TCP_SEC_TLS_CERT != s.connection_type ||
SUCCEED == (ret = zbx_check_server_issuer_subject(&s, &msg)))
#endif
{
process_listener(&s);
}
}
zbx_tcp_unaccept(&s);
}
if (SUCCEED == ret || EINTR == zbx_socket_last_error())
continue;
#if defined(HAVE_POLARSSL) || defined(HAVE_GNUTLS) || defined(HAVE_OPENSSL)
if (NULL != msg)
{
zabbix_log(LOG_LEVEL_WARNING, "failed to accept an incoming connection: %s", msg);
zbx_free(msg);
}
else
#endif
{
zabbix_log(LOG_LEVEL_WARNING, "failed to accept an incoming connection: %s",
zbx_socket_strerror());
}
if (ZBX_IS_RUNNING())
zbx_sleep(1);
}
#ifdef _WINDOWS
ZBX_DO_EXIT();
zbx_thread_exit(EXIT_SUCCESS);
#endif
}
/******************************************************************************
* *
* Function: timer_thread *
* *
* Purpose: periodically processes maintenance *
* *
******************************************************************************/
ZBX_THREAD_ENTRY(timer_thread, args)
{
double sec = 0.0;
int maintenance_time = 0, update_time = 0, idle = 1, events_num, hosts_num, update;
char *info = NULL;
size_t info_alloc = 0, info_offset = 0;
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_program_type_string(program_type),
server_num, get_process_type_string(process_type), process_num);
zbx_setproctitle("%s #%d [connecting to the database]", get_process_type_string(process_type), process_num);
zbx_strcpy_alloc(&info, &info_alloc, &info_offset, "started");
DBconnect(ZBX_DB_CONNECT_NORMAL);
for (;;)
{
sec = zbx_time();
zbx_update_env(sec);
if (1 == process_num)
{
/* start update process only when all timers have finished their updates */
if (sec - maintenance_time >= ZBX_TIMER_DELAY && FAIL == zbx_dc_maintenance_check_update_flags())
{
zbx_setproctitle("%s #%d [%s, processing maintenances]",
get_process_type_string(process_type), process_num, info);
update = zbx_dc_update_maintenances();
/* force maintenance updates at server startup */
if (0 == maintenance_time)
update = SUCCEED;
/* update hosts if there are modified (stopped, started, changed) maintenances */
if (SUCCEED == update)
hosts_num = update_host_maintenances();
else
hosts_num = 0;
db_remove_expired_event_suppress_data((int)sec);
if (SUCCEED == update)
{
zbx_dc_maintenance_set_update_flags();
db_update_event_suppress_data(&events_num);
zbx_dc_maintenance_reset_update_flag(process_num);
}
else
events_num = 0;
info_offset = 0;
zbx_snprintf_alloc(&info, &info_alloc, &info_offset,
"updated %d hosts, suppressed %d events in " ZBX_FS_DBL " sec",
hosts_num, events_num, zbx_time() - sec);
update_time = (int)sec;
}
}
else if (SUCCEED == zbx_dc_maintenance_check_update_flag(process_num))
{
zbx_setproctitle("%s #%d [%s, processing maintenances]", get_process_type_string(process_type),
process_num, info);
db_update_event_suppress_data(&events_num);
info_offset = 0;
zbx_snprintf_alloc(&info, &info_alloc, &info_offset, "suppressed %d events in " ZBX_FS_DBL
" sec", events_num, zbx_time() - sec);
update_time = (int)sec;
zbx_dc_maintenance_reset_update_flag(process_num);
}
if (maintenance_time != update_time)
{
maintenance_time = (int)sec;
if (0 > (idle = ZBX_TIMER_DELAY - (zbx_time() - sec)))
idle = 0;
zbx_setproctitle("%s #%d [%s, idle %d sec]",
get_process_type_string(process_type), process_num, info, idle);
}
if (0 != idle)
zbx_sleep_loop(1);
idle = 1;
}
}
ZBX_THREAD_ENTRY(proxypoller_thread, args)
{
int nextcheck, sleeptime = -1, processed = 0, old_processed = 0;
double sec, total_sec = 0.0, old_total_sec = 0.0;
time_t last_stat_time;
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);
#define STAT_INTERVAL 5 /* if a process is busy and does not sleep then update status not faster than */
/* once in STAT_INTERVAL seconds */
zbx_setproctitle("%s #%d [connecting to the database]", get_process_type_string(process_type), process_num);
last_stat_time = time(NULL);
DBconnect(ZBX_DB_CONNECT_NORMAL);
for (;;)
{
if (0 != sleeptime)
{
zbx_setproctitle("%s #%d [exchanged data with %d proxies in " ZBX_FS_DBL " sec,"
" exchanging data]", get_process_type_string(process_type), process_num,
old_processed, old_total_sec);
}
sec = zbx_time();
processed += process_proxy();
total_sec += zbx_time() - sec;
nextcheck = DCconfig_get_proxypoller_nextcheck();
sleeptime = calculate_sleeptime(nextcheck, POLLER_DELAY);
if (0 != sleeptime || STAT_INTERVAL <= time(NULL) - last_stat_time)
{
if (0 == sleeptime)
{
zbx_setproctitle("%s #%d [exchanged data with %d proxies in " ZBX_FS_DBL " sec,"
" exchanging data]", get_process_type_string(process_type), process_num,
processed, total_sec);
}
else
{
zbx_setproctitle("%s #%d [exchanged data with %d proxies in " ZBX_FS_DBL " sec,"
" idle %d sec]", get_process_type_string(process_type), process_num,
processed, total_sec, sleeptime);
old_processed = processed;
old_total_sec = total_sec;
}
processed = 0;
total_sec = 0.0;
last_stat_time = time(NULL);
}
zbx_sleep_loop(sleeptime);
}
#undef STAT_INTERVAL
}
