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/*
** ZABBIX
** Copyright (C) 2000-2005 SIA Zabbix
**
** 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., 675 Mass Ave, Cambridge, MA 02139, USA.
**/
#include "common.h"
#include "log.h"
#include "checks_aggregate.h"
static int evaluate_one(double *result, int *num, char *grpfunc, char const *value_str, int valuetype)
{
int ret = SUCCEED;
double value = 0;
if(valuetype == ITEM_VALUE_TYPE_FLOAT)
{
value = zbx_atod(value_str);
}
else if(valuetype == ITEM_VALUE_TYPE_UINT64)
{
value = (double)zbx_atoui64(value_str);
}
if(strcmp(grpfunc,"grpsum") == 0)
{
*result+=value;
*num+=1;
}
else if(strcmp(grpfunc,"grpavg") == 0)
{
*result+=value;
*num+=1;
}
else if(strcmp(grpfunc,"grpmin") == 0)
{
if(*num==0)
{
*result=value;
}
else if(value<*result)
{
*result=value;
}
*num+=1;
}
else if(strcmp(grpfunc,"grpmax") == 0)
{
if(*num==0)
{
*result=value;
}
else if(value>*result)
{
*result=value;
}
*num+=1;
}
else
{
ret = FAIL;
}
return ret;
}
/*
* grpfunc: grpmax, grpmin, grpsum, grpavg
* itemfunc: last, min, max, avg, sum,count
*/
static int evaluate_aggregate(AGENT_RESULT *res,char *grpfunc, char *hostgroup, char *itemkey, char *itemfunc, char *param)
{
char sql[MAX_STRING_LEN];
char sql2[MAX_STRING_LEN];
char hostgroup_esc[MAX_STRING_LEN],itemkey_esc[MAX_STRING_LEN];
DB_RESULT result;
DB_ROW row;
int valuetype;
double d = 0;
const char *value;
int num = 0;
int now;
char items[MAX_STRING_LEN],items2[MAX_STRING_LEN];
now=time(NULL);
zabbix_log( LOG_LEVEL_DEBUG, "In evaluate_aggregate('%s','%s','%s','%s','%s')",
grpfunc,
hostgroup,
itemkey,
itemfunc,
param);
init_result(res);
DBescape_string(itemkey,itemkey_esc,MAX_STRING_LEN);
DBescape_string(hostgroup,hostgroup_esc,MAX_STRING_LEN);
/* Get list of affected item IDs */
strscpy(items,"0");
result = DBselect("select i.itemid from items i,hosts_groups hg,hosts h,groups g"
" where hg.groupid=g.groupid and i.hostid=h.hostid and hg.hostid=h.hostid"
" and g.name='%s' and i.key_='%s' and i.status=%d and h.status=%d" DB_NODE,
hostgroup_esc,
itemkey_esc,
ITEM_STATUS_ACTIVE,
HOST_STATUS_MONITORED,
DBnode_local("h.hostid"));
while((row=DBfetch(result)))
{
zbx_snprintf(items2,sizeof(items2),"%s,%s",
items,
row[0]);
/* zabbix_log( LOG_LEVEL_WARNING, "ItemIDs items2[%s])",items2);*/
strscpy(items,items2);
/* zabbix_log( LOG_LEVEL_WARNING, "ItemIDs items[%s])",items2);*/
}
DBfree_result(result);
if(strcmp(itemfunc,"last") == 0)
{
zbx_snprintf(sql,sizeof(sql),"select itemid,value_type,lastvalue from items where lastvalue is not NULL and items.itemid in (%s)",
items);
zbx_snprintf(sql2,sizeof(sql2),"select itemid,value_type,lastvalue from items where 0=1");
}
/* The SQL works very very slow on MySQL 4.0. That's why it has been split into two. */
/* zbx_snprintf(sql,sizeof(sql),"select items.itemid,items.value_type,min(history.value) from items,hosts_groups,hosts,groups,history where history.itemid=items.itemid and hosts_groups.groupid=groups.groupid and items.hostid=hosts.hostid and hosts_groups.hostid=hosts.hostid and groups.name='%s' and items.key_='%s' and history.clock>%d group by 1,2",hostgroup_esc, itemkey_esc, now - atoi(param));*/
else if( (strcmp(itemfunc,"min") == 0) ||
(strcmp(itemfunc,"max") == 0) ||
(strcmp(itemfunc,"avg") == 0) ||
(strcmp(itemfunc,"count") == 0) ||
(strcmp(itemfunc,"sum") == 0)
)
{
zbx_snprintf(sql,sizeof(sql),"select h.itemid,i.value_type,%s(h.value) from items i,history h where h.itemid=i.itemid and h.itemid in (%s) and h.clock>%d group by h.itemid,i.value_type",
itemfunc,
items,
now - atoi(param));
zbx_snprintf(sql2,sizeof(sql),"select h.itemid,i.value_type,%s(h.value) from items i,history_uint h where h.itemid=i.itemid and h.itemid in (%s) and h.clock>%d group by h.itemid,i.value_type",
itemfunc,
items,
now - atoi(param));
}
else
{
SET_MSG_RESULT(res, strdup("Unsupported item function"));
zabbix_log( LOG_LEVEL_WARNING, "Unsupported item function [%s])",
itemfunc);
return FAIL;
}
zabbix_log( LOG_LEVEL_DEBUG, "SQL [%s]",sql);
zabbix_log( LOG_LEVEL_DEBUG, "SQL2 [%s]",sql2);
result = DBselect("%s",sql);
while((row=DBfetch(result)))
{
valuetype = atoi(row[1]);
value = row[2];
if(FAIL == evaluate_one(&d, &num, grpfunc, value, valuetype))
{
SET_MSG_RESULT(res, strdup("Unsupported group function"));
zabbix_log( LOG_LEVEL_WARNING, "Unsupported group function [%s])",
grpfunc);
DBfree_result(result);
return FAIL;
}
}
DBfree_result(result);
result = DBselect("%s",sql2);
while((row=DBfetch(result)))
{
valuetype = atoi(row[1]);
value = row[2];
if(FAIL == evaluate_one(&d, &num, grpfunc, value, valuetype))
{
SET_MSG_RESULT(res, strdup("Unsupported group function"));
zabbix_log( LOG_LEVEL_WARNING, "Unsupported group function [%s])",
grpfunc);
DBfree_result(result);
return FAIL;
}
}
DBfree_result(result);
if(num==0)
{
SET_MSG_RESULT(res, strdup("No values"));
zabbix_log( LOG_LEVEL_WARNING, "No values for group[%s] key[%s])",
hostgroup,
itemkey);
return FAIL;
}
if(strcmp(grpfunc,"grpavg") == 0)
{
SET_DBL_RESULT(res, d/num);
}
else
{
SET_DBL_RESULT(res, d);
}
zabbix_log( LOG_LEVEL_DEBUG, "End evaluate_aggregate(result:" ZBX_FS_DBL ")",
d);
return SUCCEED;
}
/******************************************************************************
* *
* Function: get_value_aggregate *
* *
* Purpose: retrieve data from ZABBIX server (aggregate items) *
* *
* Parameters: item - item we are interested in *
* *
* Return value: SUCCEED - data succesfully retrieved and stored in result *
* and result_str (as string) *
* NOTSUPPORTED - requested item is not supported *
* *
* Author: Alexei Vladishev *
* *
* Comments: *
* *
******************************************************************************/
int get_value_aggregate(DB_ITEM *item, AGENT_RESULT *result)
{
char function_grp[MAX_STRING_LEN];
char key[MAX_STRING_LEN];
char group[MAX_STRING_LEN];
char itemkey[MAX_STRING_LEN];
char function_item[MAX_STRING_LEN];
char parameter[MAX_STRING_LEN];
char *p,*p2;
int ret = SUCCEED;
zabbix_log( LOG_LEVEL_DEBUG, "In get_value_aggregate([%s])",
item->key);
init_result(result);
strscpy(key, item->key);
if((p=strchr(key,'[')) != NULL)
{
*p=0;
strscpy(function_grp,key);
*p='[';
p++;
}
else ret = NOTSUPPORTED;
if(ret == SUCCEED)
{
if((p2=strchr(p,'"')) != NULL)
{
p2++;
}
else ret = NOTSUPPORTED;
if((ret == SUCCEED) && (p=strchr(p2,'"')) != NULL)
{
*p=0;
strscpy(group,p2);
*p='"';
p++;
}
else ret = NOTSUPPORTED;
}
if(ret == SUCCEED)
{
if(*p != ',') ret = NOTSUPPORTED;
}
if(ret == SUCCEED)
{
if((p2=strchr(p,'"')) != NULL)
{
p2++;
}
else ret = NOTSUPPORTED;
if((ret == SUCCEED) && (p=strchr(p2,'"')) != NULL)
{
*p=0;
strscpy(itemkey,p2);
*p='"';
p++;
}
else ret = NOTSUPPORTED;
}
if(ret == SUCCEED)
{
if(*p != ',') ret = NOTSUPPORTED;
}
if(ret == SUCCEED)
{
if((p2=strchr(p,'"')) != NULL)
{
p2++;
}
else ret = NOTSUPPORTED;
if((ret == SUCCEED) && (p=strchr(p2,'"')) != NULL)
{
*p=0;
strscpy(function_item,p2);
*p='"';
p++;
}
else ret = NOTSUPPORTED;
}
if(ret == SUCCEED)
{
if(*p != ',') ret = NOTSUPPORTED;
}
if(ret == SUCCEED)
{
if((p2=strchr(p,'"')) != NULL)
{
p2++;
}
else ret = NOTSUPPORTED;
if((ret == SUCCEED) && (p=strchr(p2,'"')) != NULL)
{
*p=0;
strscpy(parameter,p2);
*p='"';
p++;
}
else ret = NOTSUPPORTED;
}
zabbix_log( LOG_LEVEL_DEBUG, "Evaluating aggregate[%s] grpfunc[%s] group[%s] itemkey[%s] itemfunc [%s] parameter [%s]",
item->key,
function_grp,
group,
itemkey,
function_item,
parameter);
if( (ret == SUCCEED) &&
(evaluate_aggregate(result,function_grp, group, itemkey, function_item, parameter) != SUCCEED)
)
{
ret = NOTSUPPORTED;
}
return ret;
}
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