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/*
** Zabbix
** Copyright (C) 2001-2019 Zabbix SIA
**
** 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/
#include "common.h"
#include "db.h"
#include "log.h"
#include "daemon.h"
#include "zbxself.h"
#include "httptest.h"
#include "httppoller.h"
extern int CONFIG_HTTPPOLLER_FORKS;
extern unsigned char process_type, program_type;
extern int server_num, process_num;
/******************************************************************************
* *
* Function: get_minnextcheck *
* *
* Purpose: calculate when we have to process earliest httptest *
* *
* Return value: timestamp of earliest check or -1 if not found *
* *
* Author: Alexei Vladishev *
* *
******************************************************************************/
static int get_minnextcheck(void)
{
DB_RESULT result;
DB_ROW row;
int res;
result = DBselect(
"select min(t.nextcheck)"
" from httptest t,hosts h"
" where t.hostid=h.hostid"
" and " ZBX_SQL_MOD(t.httptestid,%d) "=%d"
" and t.status=%d"
" and h.proxy_hostid is null"
" and h.status=%d"
" and (h.maintenance_status=%d or h.maintenance_type=%d)",
CONFIG_HTTPPOLLER_FORKS, process_num - 1,
HTTPTEST_STATUS_MONITORED,
HOST_STATUS_MONITORED,
HOST_MAINTENANCE_STATUS_OFF, MAINTENANCE_TYPE_NORMAL);
if (NULL == (row = DBfetch(result)) || SUCCEED == DBis_null(row[0]))
{
zabbix_log(LOG_LEVEL_DEBUG, "No httptests to process in get_minnextcheck.");
res = FAIL;
}
else
res = atoi(row[0]);
DBfree_result(result);
return res;
}
/******************************************************************************
* *
* Function: main_httppoller_loop *
* *
* Purpose: main loop of processing of httptests *
* *
* Parameters: *
* *
* Return value: *
* *
* Author: Alexei Vladishev *
* *
* Comments: never returns *
* *
******************************************************************************/
ZBX_THREAD_ENTRY(httppoller_thread, args)
{
int now, nextcheck, sleeptime = -1, httptests_count = 0, old_httptests_count = 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_program_type_string(program_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);
while (ZBX_IS_RUNNING())
{
sec = zbx_time();
zbx_update_env(sec);
if (0 != sleeptime)
{
zbx_setproctitle("%s #%d [got %d values in " ZBX_FS_DBL " sec, getting values]",
get_process_type_string(process_type), process_num, old_httptests_count,
old_total_sec);
}
now = time(NULL);
httptests_count += process_httptests(process_num, now);
total_sec += zbx_time() - sec;
nextcheck = get_minnextcheck();
sleeptime = calculate_sleeptime(nextcheck, POLLER_DELAY);
if (0 != sleeptime || STAT_INTERVAL <= time(NULL) - last_stat_time)
{
if (0 == sleeptime)
{
zbx_setproctitle("%s #%d [got %d values in " ZBX_FS_DBL " sec, getting values]",
get_process_type_string(process_type), process_num, httptests_count,
total_sec);
}
else
{
zbx_setproctitle("%s #%d [got %d values in " ZBX_FS_DBL " sec, idle %d sec]",
get_process_type_string(process_type), process_num, httptests_count,
total_sec, sleeptime);
old_httptests_count = httptests_count;
old_total_sec = total_sec;
}
httptests_count = 0;
total_sec = 0.0;
last_stat_time = time(NULL);
}
zbx_sleep_loop(sleeptime);
}
zbx_setproctitle("%s #%d [terminated]", get_process_type_string(process_type), process_num);
while (1)
zbx_sleep(SEC_PER_MIN);
#undef STAT_INTERVAL
}
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