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/*
** Zabbix
** Copyright (C) 2001-2014 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 "events.h"
static DB_RESULT discovery_get_dhost_by_value(zbx_uint64_t dcheckid, const char *value)
{
DB_RESULT result;
char *value_esc;
value_esc = DBdyn_escape_string_len(value, DSERVICE_VALUE_LEN);
result = DBselect(
"select dh.dhostid,dh.status,dh.lastup,dh.lastdown"
" from dhosts dh,dservices ds"
" where ds.dhostid=dh.dhostid"
" and ds.dcheckid=" ZBX_FS_UI64
" and ds.value" ZBX_SQL_STRCMP
" order by dh.dhostid",
dcheckid, ZBX_SQL_STRVAL_EQ(value_esc));
zbx_free(value_esc);
return result;
}
static DB_RESULT discovery_get_dhost_by_ip(zbx_uint64_t druleid, const char *ip)
{
DB_RESULT result;
char *ip_esc;
ip_esc = DBdyn_escape_string_len(ip, INTERFACE_IP_LEN);
result = DBselect(
"select dh.dhostid,dh.status,dh.lastup,dh.lastdown"
" from dhosts dh,dservices ds"
" where ds.dhostid=dh.dhostid"
" and dh.druleid=" ZBX_FS_UI64
" and ds.ip" ZBX_SQL_STRCMP
" order by dh.dhostid",
druleid, ZBX_SQL_STRVAL_EQ(ip_esc));
zbx_free(ip_esc);
return result;
}
/******************************************************************************
* *
* Function: discovery_separate_host *
* *
* Purpose: separate multiple-IP hosts *
* *
* Parameters: host ip address *
* *
* Author: Alexander Vladishev *
* *
******************************************************************************/
static void discovery_separate_host(DB_DRULE *drule, DB_DHOST *dhost, const char *ip)
{
const char *__function_name = "discovery_separate_host";
DB_RESULT result;
DB_ROW row;
char *ip_esc, *sql = NULL;
zbx_uint64_t dhostid;
zabbix_log(LOG_LEVEL_DEBUG, "In %s() ip:'%s'", __function_name, ip);
ip_esc = DBdyn_escape_string_len(ip, INTERFACE_IP_LEN);
sql = zbx_dsprintf(sql,
"select dserviceid"
" from dservices"
" where dhostid=" ZBX_FS_UI64
" and ip" ZBX_SQL_STRCMP,
dhost->dhostid, ZBX_SQL_STRVAL_NE(ip_esc));
result = DBselectN(sql, 1);
if (NULL != (row = DBfetch(result)))
{
dhostid = DBget_maxid("dhosts");
DBexecute("insert into dhosts (dhostid,druleid)"
" values (" ZBX_FS_UI64 "," ZBX_FS_UI64 ")",
dhostid, drule->druleid);
DBexecute("update dservices"
" set dhostid=" ZBX_FS_UI64
" where dhostid=" ZBX_FS_UI64
" and ip" ZBX_SQL_STRCMP,
dhostid, dhost->dhostid, ZBX_SQL_STRVAL_EQ(ip_esc));
dhost->dhostid = dhostid;
dhost->status = DOBJECT_STATUS_DOWN;
dhost->lastup = 0;
dhost->lastdown = 0;
}
DBfree_result(result);
zbx_free(sql);
zbx_free(ip_esc);
zabbix_log(LOG_LEVEL_DEBUG, "End of %s()", __function_name);
}
/******************************************************************************
* *
* Function: discovery_register_host *
* *
* Purpose: register host if one does not exist *
* *
* Parameters: host ip address *
* *
* Author: Alexei Vladishev *
* *
******************************************************************************/
static void discovery_register_host(DB_DRULE *drule, DB_DCHECK *dcheck, DB_DHOST *dhost,
const char *ip, int status, const char *value)
{
const char *__function_name = "discovery_register_host";
DB_RESULT result;
DB_ROW row;
zabbix_log(LOG_LEVEL_DEBUG, "In %s() ip:'%s' status:%d value:'%s'",
__function_name, ip, status, value);
if (drule->unique_dcheckid == dcheck->dcheckid)
{
result = discovery_get_dhost_by_value(dcheck->dcheckid, value);
if (NULL == (row = DBfetch(result)))
{
DBfree_result(result);
result = discovery_get_dhost_by_ip(drule->druleid, ip);
row = DBfetch(result);
}
}
else
{
result = discovery_get_dhost_by_ip(drule->druleid, ip);
row = DBfetch(result);
}
if (NULL == row)
{
if (DOBJECT_STATUS_UP == status) /* add host only if service is up */
{
zabbix_log(LOG_LEVEL_DEBUG, "new host discovered at %s", ip);
dhost->dhostid = DBget_maxid("dhosts");
dhost->status = DOBJECT_STATUS_DOWN;
dhost->lastup = 0;
dhost->lastdown = 0;
DBexecute("insert into dhosts (dhostid,druleid)"
" values (" ZBX_FS_UI64 "," ZBX_FS_UI64 ")",
dhost->dhostid, drule->druleid);
}
}
else
{
zabbix_log(LOG_LEVEL_DEBUG, "host at %s is already in database", ip);
ZBX_STR2UINT64(dhost->dhostid, row[0]);
dhost->status = atoi(row[1]);
dhost->lastup = atoi(row[2]);
dhost->lastdown = atoi(row[3]);
if (0 == drule->unique_dcheckid)
discovery_separate_host(drule, dhost, ip);
}
DBfree_result(result);
zabbix_log(LOG_LEVEL_DEBUG, "End of %s()", __function_name);
}
/******************************************************************************
* *
* Function: discovery_register_service *
* *
* Purpose: register service if one does not exist *
* *
* Parameters: host ip address *
* *
* Author: Alexei Vladishev *
* *
******************************************************************************/
static void discovery_register_service(DB_DRULE *drule, DB_DCHECK *dcheck,
DB_DHOST *dhost, DB_DSERVICE *dservice, const char *ip, const char *dns,
int port, int status)
{
const char *__function_name = "discovery_register_service";
DB_RESULT result;
DB_ROW row;
char *key_esc, *ip_esc, *dns_esc;
zbx_uint64_t dhostid;
zabbix_log(LOG_LEVEL_DEBUG, "In %s() ip:'%s' port:%d key:'%s'",
__function_name, ip, port, dcheck->key_);
key_esc = DBdyn_escape_string_len(dcheck->key_, DSERVICE_KEY_LEN);
ip_esc = DBdyn_escape_string_len(ip, INTERFACE_IP_LEN);
result = DBselect(
"select dserviceid,dhostid,status,lastup,lastdown,value,dns"
" from dservices"
" where dcheckid=" ZBX_FS_UI64
" and type=%d"
" and key_" ZBX_SQL_STRCMP
" and ip" ZBX_SQL_STRCMP
" and port=%d",
dcheck->dcheckid,
dcheck->type,
ZBX_SQL_STRVAL_EQ(key_esc),
ZBX_SQL_STRVAL_EQ(ip_esc),
port);
if (NULL == (row = DBfetch(result)))
{
if (DOBJECT_STATUS_UP == status) /* add host only if service is up */
{
zabbix_log(LOG_LEVEL_DEBUG, "new service discovered on port %d", port);
dservice->dserviceid = DBget_maxid("dservices");
dservice->status = DOBJECT_STATUS_DOWN;
dns_esc = DBdyn_escape_string_len(dns, INTERFACE_DNS_LEN);
DBexecute("insert into dservices (dserviceid,dhostid,dcheckid,type,key_,ip,dns,port,status)"
" values (" ZBX_FS_UI64 "," ZBX_FS_UI64 "," ZBX_FS_UI64 ",%d,'%s','%s','%s',%d,%d)",
dservice->dserviceid, dhost->dhostid, dcheck->dcheckid, dcheck->type,
key_esc, ip_esc, dns_esc, port, dservice->status);
zbx_free(dns_esc);
}
}
else
{
zabbix_log(LOG_LEVEL_DEBUG, "service is already in database");
ZBX_STR2UINT64(dservice->dserviceid, row[0]);
ZBX_STR2UINT64(dhostid, row[1]);
dservice->status = atoi(row[2]);
dservice->lastup = atoi(row[3]);
dservice->lastdown = atoi(row[4]);
strscpy(dservice->value, row[5]);
if (dhostid != dhost->dhostid)
{
DBexecute("update dservices"
" set dhostid=" ZBX_FS_UI64
" where dhostid=" ZBX_FS_UI64,
dhost->dhostid, dhostid);
DBexecute("delete from dhosts"
" where dhostid=" ZBX_FS_UI64,
dhostid);
}
if (0 != strcmp(row[6], dns))
{
dns_esc = DBdyn_escape_string_len(dns, INTERFACE_DNS_LEN);
DBexecute("update dservices"
" set dns='%s'"
" where dserviceid=" ZBX_FS_UI64,
dns_esc, dservice->dserviceid);
zbx_free(dns_esc);
}
}
DBfree_result(result);
zbx_free(ip_esc);
zbx_free(key_esc);
zabbix_log(LOG_LEVEL_DEBUG, "End of %s()", __function_name);
}
/******************************************************************************
* *
* Function: discovery_update_dservice *
* *
* Purpose: update discovered service details *
* *
* Author: Alexei Vladishev *
* *
******************************************************************************/
static void discovery_update_dservice(DB_DSERVICE *service)
{
char *value_esc;
value_esc = DBdyn_escape_string_len(service->value, DSERVICE_VALUE_LEN);
DBexecute("update dservices set status=%d,lastup=%d,lastdown=%d,value='%s' where dserviceid=" ZBX_FS_UI64,
service->status, service->lastup, service->lastdown, value_esc, service->dserviceid);
zbx_free(value_esc);
}
/******************************************************************************
* *
* Function: discovery_update_dservice_value *
* *
* Purpose: update discovered service details *
* Author: Alexei Vladishev *
* *
******************************************************************************/
static void discovery_update_dservice_value(DB_DSERVICE *service)
{
char *value_esc;
value_esc = DBdyn_escape_string_len(service->value, DSERVICE_VALUE_LEN);
DBexecute("update dservices set value='%s' where dserviceid=" ZBX_FS_UI64,
value_esc, service->dserviceid);
zbx_free(value_esc);
}
/******************************************************************************
* *
* Function: discovery_update_service_status *
* *
* Purpose: process and update the new service status *
* *
* Author: Alexander Vladishev *
* *
******************************************************************************/
static void discovery_update_service_status(DB_DSERVICE *dservice, int status, const char *value, int now)
{
zbx_timespec_t ts;
ts.sec = now;
ts.ns = 0;
if (DOBJECT_STATUS_UP == status)
{
if (DOBJECT_STATUS_DOWN == dservice->status || 0 == dservice->lastup)
{
dservice->status = status;
dservice->lastdown = 0;
dservice->lastup = now;
zbx_strlcpy(dservice->value, value, sizeof(dservice->value));
discovery_update_dservice(dservice);
add_event(0, EVENT_SOURCE_DISCOVERY, EVENT_OBJECT_DSERVICE, dservice->dserviceid, &ts,
DOBJECT_STATUS_DISCOVER, NULL, NULL, 0, 0);
}
else if (0 != strcmp(dservice->value, value))
{
zbx_strlcpy(dservice->value, value, sizeof(dservice->value));
discovery_update_dservice_value(dservice);
}
}
else /* DOBJECT_STATUS_DOWN */
{
if (DOBJECT_STATUS_UP == dservice->status || 0 == dservice->lastdown)
{
dservice->status = status;
dservice->lastdown = now;
dservice->lastup = 0;
discovery_update_dservice(dservice);
add_event(0, EVENT_SOURCE_DISCOVERY, EVENT_OBJECT_DSERVICE, dservice->dserviceid, &ts,
DOBJECT_STATUS_LOST, NULL, NULL, 0, 0);
}
}
add_event(0, EVENT_SOURCE_DISCOVERY, EVENT_OBJECT_DSERVICE, dservice->dserviceid, &ts, status,
NULL, NULL, 0, 0);
process_events();
}
/******************************************************************************
* *
* Function: discovery_update_dhost *
* *
* Purpose: update discovered host details *
* *
* Author: Alexei Vladishev *
* *
******************************************************************************/
static void discovery_update_dhost(DB_DHOST *dhost)
{
DBexecute("update dhosts set status=%d,lastup=%d,lastdown=%d where dhostid=" ZBX_FS_UI64,
dhost->status, dhost->lastup, dhost->lastdown, dhost->dhostid);
}
/******************************************************************************
* *
* Function: discovery_update_host_status *
* *
* Purpose: update new host status *
* *
* Author: Alexander Vladishev *
* *
******************************************************************************/
static void discovery_update_host_status(DB_DHOST *dhost, int status, int now)
{
zbx_timespec_t ts;
ts.sec = now;
ts.ns = 0;
/* update host status */
if (DOBJECT_STATUS_UP == status)
{
if (DOBJECT_STATUS_DOWN == dhost->status || 0 == dhost->lastup)
{
dhost->status = status;
dhost->lastdown = 0;
dhost->lastup = now;
discovery_update_dhost(dhost);
add_event(0, EVENT_SOURCE_DISCOVERY, EVENT_OBJECT_DHOST, dhost->dhostid, &ts,
DOBJECT_STATUS_DISCOVER, NULL, NULL, 0, 0);
}
}
else /* DOBJECT_STATUS_DOWN */
{
if (DOBJECT_STATUS_UP == dhost->status || 0 == dhost->lastdown)
{
dhost->status = status;
dhost->lastdown = now;
dhost->lastup = 0;
discovery_update_dhost(dhost);
add_event(0, EVENT_SOURCE_DISCOVERY, EVENT_OBJECT_DHOST, dhost->dhostid, &ts,
DOBJECT_STATUS_LOST, NULL, NULL, 0, 0);
}
}
add_event(0, EVENT_SOURCE_DISCOVERY, EVENT_OBJECT_DHOST, dhost->dhostid, &ts, status, NULL, NULL, 0, 0);
process_events();
}
/******************************************************************************
* *
* Function: discovery_update_host *
* *
* Purpose: process new host status *
* *
* Parameters: host - host info *
* *
* Author: Alexander Vladishev *
* *
******************************************************************************/
void discovery_update_host(DB_DHOST *dhost, const char *ip, int status, int now)
{
const char *__function_name = "discovery_update_host";
zabbix_log(LOG_LEVEL_DEBUG, "In %s()", __function_name);
if (0 != dhost->dhostid)
discovery_update_host_status(dhost, status, now);
zabbix_log(LOG_LEVEL_DEBUG, "End of %s()", __function_name);
}
/******************************************************************************
* *
* Function: discovery_update_service *
* *
* Purpose: process new service status *
* *
* Parameters: service - service info *
* *
* Author: Alexei Vladishev *
* *
******************************************************************************/
void discovery_update_service(DB_DRULE *drule, DB_DCHECK *dcheck, DB_DHOST *dhost,
const char *ip, const char *dns, int port, int status, const char *value, int now)
{
const char *__function_name = "discovery_update_service";
DB_DSERVICE dservice;
zabbix_log(LOG_LEVEL_DEBUG, "In %s() ip:'%s' port:%d status:%d",
__function_name, ip, port, status);
memset(&dservice, 0, sizeof(dservice));
/* register host if is not registered yet */
if (0 == dhost->dhostid)
discovery_register_host(drule, dcheck, dhost, ip, status, value);
/* register service if is not registered yet */
if (0 != dhost->dhostid)
discovery_register_service(drule, dcheck, dhost, &dservice, ip, dns, port, status);
/* service was not registered because we do not add down service */
if (0 != dservice.dserviceid)
discovery_update_service_status(&dservice, status, value, now);
zabbix_log(LOG_LEVEL_DEBUG, "End of %s()", __function_name);
}
|