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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 "perfstat.h"
#include "alias.h"
#include "log.h"
#ifdef _WINDOWS
#include "perfmon.h"
/* Static data */
static ZBX_PERF_STAT_DATA *ppsd = NULL;
/******************************************************************************
* *
* Function: add_perf_counter *
* *
* Purpose: Add PerfCounter in to the list of *
* *
* Parameters: name - name of perfcounter *
* counterPath - system perfcounter name *
* interval - update interval *
* *
* Return value: SUCCEED on success or FAIL in other cases *
* *
* Author: Eugene Grigorjev *
* *
* Comments: *
* *
******************************************************************************/
int add_perf_counter(const char *name, const char *counterPath, int interval)
{
PERF_COUNTERS *cptr;
PDH_STATUS status;
char *alias_name;
int result = FAIL;
assert(name);
assert(counterPath);
zabbix_log(LOG_LEVEL_DEBUG, "In add_perf_counter() [name:%s] [counter:%s] [interval:%d]",
name, counterPath, interval);
if (NULL == ppsd->pdh_query) {
zabbix_log(LOG_LEVEL_WARNING, "PerfCounter %s: \"%s\" FAILED: Collector is not started!",
name, counterPath);
return FAIL;
}
if (interval < 1 || interval > 900) {
zabbix_log(LOG_LEVEL_WARNING, "PerfCounter %s: \"%s\" FAILED: Interval value out of range",
name, counterPath);
return FAIL;
}
for (cptr = ppsd->pPerfCounterList; ; cptr = cptr->next) {
/* Add new parameters */
if (NULL == cptr) {
cptr = (PERF_COUNTERS *)zbx_malloc(cptr, sizeof(PERF_COUNTERS));
memset(cptr, 0, sizeof(PERF_COUNTERS));
cptr->next = ppsd->pPerfCounterList;
cptr->name = strdup(name);
cptr->counterPath = strdup(counterPath);
cptr->interval = interval;
cptr->rawValueArray = (PDH_RAW_COUNTER *)zbx_malloc(cptr->rawValueArray,
sizeof(PDH_RAW_COUNTER) * interval);
cptr->CurrentNum = 1;
/* Add user counters to query */
if (ERROR_SUCCESS != (status = PdhAddCounter(ppsd->pdh_query, cptr->counterPath, 0, &cptr->handle))) {
cptr->interval = -1; /* Flag for unsupported counters */
cptr->lastValue = NOTSUPPORTED;
zabbix_log( LOG_LEVEL_ERR, "Unable to add performance counter \"%s\" to query: %s",
cptr->counterPath,
strerror_from_module(status, "PDH.DLL"));
} else
zabbix_log(LOG_LEVEL_DEBUG, "PerfCounter %s: \"%s\" successfully added. Interval %d seconds",
name, cptr->counterPath, interval);
ppsd->pPerfCounterList = cptr;
result = SUCCEED;
break;
}
if (*name != '\0' && 0 == strcmp(cptr->name, name)) {
zabbix_log(LOG_LEVEL_WARNING, "PerfCounter %s: \"%s\" FAILED: Counter already exists",
name, counterPath);
break;
}
}
if (SUCCEED == result && *name != '\0') {
alias_name = zbx_dsprintf(NULL, "__UserPerfCounter[%s]", name);
result = add_alias(name, alias_name);
zbx_free(alias_name);
}/* else
zabbix_log(LOG_LEVEL_WARNING, "PerfCounter %s: \"%s\" FAILED",
name, counterPath);
*/
return result;
}
/******************************************************************************
* *
* Function: add_perfs_from_config *
* *
* Purpose: parse config parameter 'PerfCounter' *
* *
* Parameters: line - line for parsing *
* *
* Return value: SUCCEED on success or FAIL in other cases *
* *
* Author: Eugene Grigorjev *
* *
* Comments: format of input line is - name,"perfcounter name",interval *
* *
******************************************************************************/
int add_perfs_from_config(const char *line)
{
char name[MAX_STRING_LEN],
counterPath[PDH_MAX_COUNTER_PATH],
interval[MAX_STRING_LEN];
assert(line);
if (num_param(line) != 3)
goto lbl_syntax_error;
if (0 != get_param(line, 1, name, sizeof(name)))
goto lbl_syntax_error;
if (0 != get_param(line, 2, counterPath, sizeof(counterPath)))
goto lbl_syntax_error;
if (0 != get_param(line, 3, interval, sizeof(interval)))
goto lbl_syntax_error;
if (FAIL == check_counter_path(counterPath))
goto lbl_syntax_error;
return add_perf_counter(name, counterPath, atoi(interval));
lbl_syntax_error:
zabbix_log(LOG_LEVEL_WARNING, "PerfCounter \"%s\" FAILED: Invalid format.",
line);
return FAIL;
}
/******************************************************************************
* *
* Function: perfs_list_free *
* *
* Purpose: free PerfCounter list *
* *
* Return value: *
* *
* Author: Eugene Grigorjev *
* *
* Comments: *
* *
******************************************************************************/
void perfs_list_free(void)
{
PERF_COUNTERS *cptr;
while (NULL != ppsd->pPerfCounterList) {
cptr = ppsd->pPerfCounterList;
ppsd->pPerfCounterList = cptr->next;
zbx_free(cptr->name);
zbx_free(cptr->counterPath);
zbx_free(cptr->rawValueArray);
zbx_free(cptr);
}
}
/******************************************************************************
* *
* Function: init_perf_collector *
* *
* Purpose: Initialize statistic structure and prepare state *
* for data calculation *
* *
* Parameters: pperf - pointer to the structure *
* of ZBX_PERF_STAT_DATA type *
* *
* Return value: *
* *
* Author: Eugene Grigorjev *
* *
* Comments: *
* *
******************************************************************************/
int init_perf_collector(ZBX_PERF_STAT_DATA *pperf)
{
zabbix_log(LOG_LEVEL_DEBUG, "In init_perf_collector()");
ppsd = pperf;
if (ERROR_SUCCESS != PdhOpenQuery(NULL, 0, &ppsd->pdh_query)) {
zabbix_log(LOG_LEVEL_ERR, "Call to PdhOpenQuery() failed: %s", strerror_from_system(GetLastError()));
return FAIL;
}
return SUCCEED;
}
/******************************************************************************
* *
* Function: close_perf_collector *
* *
* Purpose: Clear state of data calculation *
* *
* Parameters: *
* *
* Return value: *
* *
* Author: Eugene Grigorjev *
* *
* Comments: *
* *
******************************************************************************/
void close_perf_collector()
{
PERF_COUNTERS *cptr;
if (NULL == ppsd->pdh_query)
return;
for (cptr = ppsd->pPerfCounterList; cptr != NULL; cptr = cptr->next)
if (NULL != cptr->handle) {
PdhRemoveCounter(cptr->handle);
cptr->handle = NULL;
}
PdhCloseQuery(ppsd->pdh_query);
ppsd->pdh_query = NULL;
perfs_list_free();
}
/******************************************************************************
* *
* Function: collect_perfstat *
* *
* Purpose: *
* *
* Parameters: *
* *
* Return value: *
* *
* Author: Eugene Grigorjev *
* *
* Comments: *
* *
******************************************************************************/
void collect_perfstat()
{
PERF_COUNTERS *cptr;
PDH_STATISTICS statData;
PDH_STATUS status;
if (NULL == ppsd->pdh_query) /* collector is not started */
return;
if (NULL == ppsd->pPerfCounterList) /* no counters */
return;
if (ERROR_SUCCESS != (status = PdhCollectQueryData(ppsd->pdh_query))) {
zabbix_log( LOG_LEVEL_ERR, "Call to PdhCollectQueryData() failed: %s", strerror_from_module(status,"PDH.DLL"));
return;
}
/* Process user-defined counters */
for ( cptr = ppsd->pPerfCounterList; cptr != NULL; cptr = cptr->next )
{
if (cptr->interval == -1) /* Inactive counter? */
continue;
PdhGetRawCounterValue(
cptr->handle,
NULL,
&cptr->rawValueArray[cptr->CurrentCounter]
);
cptr->CurrentCounter++;
if ( cptr->CurrentCounter >= cptr->interval )
cptr->CurrentCounter = 0;
PdhComputeCounterStatistics(
cptr->handle,
PDH_FMT_DOUBLE,
(cptr->CurrentNum < cptr->interval) ? 0 : cptr->CurrentCounter,
cptr->CurrentNum,
cptr->rawValueArray,
&statData
);
cptr->lastValue = statData.mean.doubleValue;
if(cptr->CurrentNum < cptr->interval)
cptr->CurrentNum++;
}
}
#endif /* _WINDOWS */
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