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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 "dbcache.h"
#include "dbsyncer.h"
#include "export.h"
extern int CONFIG_HISTSYNCER_FREQUENCY;
extern unsigned char process_type, program_type;
extern int server_num, process_num;
/******************************************************************************
* *
* Function: main_dbsyncer_loop *
* *
* Purpose: periodically synchronises data in memory cache with database *
* *
* Author: Alexei Vladishev *
* *
* Comments: never returns *
* *
******************************************************************************/
ZBX_THREAD_ENTRY(dbsyncer_thread, args)
{
int sleeptime = -1, total_values_num = 0, values_num, more, total_triggers_num = 0, triggers_num;
double sec, total_sec = 0.0;
time_t last_stat_time;
char *stats = NULL;
const char *process_name;
size_t stats_alloc = 0, stats_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,
(process_name = 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]", process_name, process_num);
last_stat_time = time(NULL);
zbx_strcpy_alloc(&stats, &stats_alloc, &stats_offset, "started");
DBconnect(ZBX_DB_CONNECT_NORMAL);
if (SUCCEED == zbx_is_export_enabled())
{
zbx_history_export_init("history-syncer", process_num);
zbx_problems_export_init("history-syncer", process_num);
}
for (;;)
{
sec = zbx_time();
zbx_update_env(sec);
if (0 != sleeptime)
zbx_setproctitle("%s #%d [%s, syncing history]", process_name, process_num, stats);
zbx_sync_history_cache(&values_num, &triggers_num, &more);
total_values_num += values_num;
total_triggers_num += triggers_num;
total_sec += zbx_time() - sec;
sleeptime = (ZBX_SYNC_MORE == more ? 0 : CONFIG_HISTSYNCER_FREQUENCY);
if (0 != sleeptime || STAT_INTERVAL <= time(NULL) - last_stat_time)
{
stats_offset = 0;
zbx_snprintf_alloc(&stats, &stats_alloc, &stats_offset, "processed %d values", total_values_num);
if (0 != (program_type & ZBX_PROGRAM_TYPE_SERVER))
{
zbx_snprintf_alloc(&stats, &stats_alloc, &stats_offset, ", %d triggers",
total_triggers_num);
}
zbx_snprintf_alloc(&stats, &stats_alloc, &stats_offset, " in " ZBX_FS_DBL " sec", total_sec);
if (0 == sleeptime)
zbx_setproctitle("%s #%d [%s, syncing history]", process_name, process_num, stats);
else
zbx_setproctitle("%s #%d [%s, idle %d sec]", process_name, process_num, stats, sleeptime);
total_values_num = 0;
total_triggers_num = 0;
total_sec = 0.0;
last_stat_time = time(NULL);
}
zbx_sleep_loop(sleeptime);
}
zbx_free(stats);
#undef STAT_INTERVAL
}
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