Zabbix

/*

** Zabbix

** Copyright (C) 2001-2023 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 "ha.h"

​

#include "zbxdbhigh.h"

#include "zbxipcservice.h"

#include "zbxserialize.h"

#include "zbxthreads.h"

#include "zbxmutexs.h"

#include "audit/zbxaudit.h"

#include "audit/zbxaudit_ha.h"

#include "audit/zbxaudit_settings.h"

#include "zbxnum.h"

#include "zbxtime.h"

#include "zbxip.h"

#include "zbxcomms.h"

#include "../rtc/rtc_server.h"

#include "zbxstr.h"

#include "zbxrtc.h"

#include "zbxjson.h"

#include "zbxdb.h"

#include "zbxalgo.h"

#include "zbxlog.h"

​

#define ZBX_HA_POLL_PERIOD  5

​

#define ZBX_HA_NODE_LOCK    1

​

#define zbx_cuid_empty(a)   ('\0' == *(a).str ? SUCCEED : FAIL)

#define zbx_cuid_compare(a, b)  (0 == memcmp((a).str, (b).str, CUID_LEN) ? SUCCEED : FAIL)

#define zbx_cuid_clear(a)   memset((a).str, 0, CUID_LEN)

​

typedef struct

{

    char    str[CUID_LEN];

}

zbx_cuid_t;

​

static pid_t        ha_pid = ZBX_THREAD_ERROR;

static zbx_cuid_t   ha_sessionid;

​

typedef struct

{

    zbx_cuid_t  ha_nodeid;

​

    /* HA status */

    int     ha_status;

​

    /* database connection status */

    int     db_status;

​

    /* timestamp in database time */

    int     db_time;

​

    int     failover_delay;

​

    /* last access time of active node */

    int     lastaccess_active;

​

    /* number of ticks active node has not been updated its lastaccess */

    int     offline_ticks_active;

​

    /* 0 if auditlog is disabled */

    int     auditlog;

​

    const char  *name;

    char        *error;

}

zbx_ha_info_t;

​

ZBX_THREAD_ENTRY(ha_manager_thread, args);

​

typedef struct

{