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/*
** Zabbix
** Copyright (C) 2001-2021 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 "log.h"
#include "zbxself.h"
#include "zbxavailability.h"
#include "zbxipcservice.h"
#include "avail_manager.h"
#include "daemon.h"
#include "sighandler.h"
#include "dbcache.h"
#include "zbxalgo.h"
#include "avail_protocol.h"
extern ZBX_THREAD_LOCAL unsigned char process_type;
extern unsigned char program_type;
extern ZBX_THREAD_LOCAL int server_num, process_num;
static sigset_t orig_mask;
#define ZBX_AVAILABILITY_MANAGER_DELAY 1
#define ZBX_AVAILABILITY_MANAGER_FLUSH_DELAY_SEC 5
static int interface_availability_compare(const void *d1, const void *d2)
{
const zbx_interface_availability_t *ia1 = *(const zbx_interface_availability_t **)d1;
const zbx_interface_availability_t *ia2 = *(const zbx_interface_availability_t **)d2;
ZBX_RETURN_IF_NOT_EQUAL(ia1->interfaceid, ia2->interfaceid);
return ia1->id - ia2->id;
}
ZBX_THREAD_ENTRY(availability_manager_thread, args)
{
zbx_ipc_service_t service;
char *error = NULL;
zbx_ipc_client_t *client;
zbx_ipc_message_t *message;
int ret, processed_num = 0;
double time_stat, time_idle = 0, time_now, time_flush, sec;
zbx_vector_availability_ptr_t interface_availabilities;
zbx_timespec_t timeout = {ZBX_AVAILABILITY_MANAGER_DELAY, 0};
#define STAT_INTERVAL 5 /* if a process is busy and does not sleep then update status not faster than */
/* once in STAT_INTERVAL seconds */
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);
update_selfmon_counter(ZBX_PROCESS_STATE_BUSY);
zbx_setproctitle("%s #%d [connecting to the database]", get_process_type_string(process_type), process_num);
DBconnect(ZBX_DB_CONNECT_NORMAL);
if (FAIL == zbx_ipc_service_start(&service, ZBX_IPC_SERVICE_AVAILABILITY, &error))
{
zabbix_log(LOG_LEVEL_CRIT, "cannot start availability manager service: %s", error);
zbx_free(error);
exit(EXIT_FAILURE);
}
/* initialize statistics */
time_stat = zbx_time();
time_flush = time_stat;
zbx_vector_availability_ptr_create(&interface_availabilities);
zbx_setproctitle("%s #%d started", get_process_type_string(process_type), process_num);
while (ZBX_IS_RUNNING())
{
time_now = zbx_time();
if (STAT_INTERVAL < time_now - time_stat)
{
zbx_setproctitle("%s #%d [queued %d, processed %d values, idle "
ZBX_FS_DBL " sec during " ZBX_FS_DBL " sec]",
get_process_type_string(process_type), process_num,
interface_availabilities.values_num, processed_num, time_idle, time_now - time_stat);
time_stat = time_now;
time_idle = 0;
processed_num = 0;
}
update_selfmon_counter(ZBX_PROCESS_STATE_IDLE);
ret = zbx_ipc_service_recv(&service, &timeout, &client, &message);
update_selfmon_counter(ZBX_PROCESS_STATE_BUSY);
sec = zbx_time();
zbx_update_env(sec);
if (ZBX_IPC_RECV_IMMEDIATE != ret)
time_idle += sec - time_now;
if (NULL != message)
{
zbx_availability_deserialize(message->data, message->size, &interface_availabilities);
zbx_ipc_message_free(message);
}
if (NULL != client)
zbx_ipc_client_release(client);
if (ZBX_AVAILABILITY_MANAGER_FLUSH_DELAY_SEC < time_now - time_flush)
{
time_flush = time_now;
if (0 == interface_availabilities.values_num)
continue;
zbx_block_signals(&orig_mask);
zbx_vector_availability_ptr_sort(&interface_availabilities, interface_availability_compare);
zbx_db_update_interface_availabilities(&interface_availabilities);
zbx_unblock_signals(&orig_mask);
processed_num = interface_availabilities.values_num;
zbx_vector_availability_ptr_clear_ext(&interface_availabilities,
zbx_interface_availability_free);
}
}
zbx_block_signals(&orig_mask);
if (0 != interface_availabilities.values_num)
{
zbx_vector_availability_ptr_sort(&interface_availabilities, interface_availability_compare);
zbx_db_update_interface_availabilities(&interface_availabilities);
}
DBclose();
zbx_unblock_signals(&orig_mask);
exit(EXIT_SUCCESS);
#undef STAT_INTERVAL
}
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