/******************************************************************************
* *
* Function: get_perf_counter_value_by_name *
* *
* Purpose: gets average named performance counter value *
* *
* Parameters: name - [IN] the performance counter name *
* value - [OUT] the calculated value *
* error - [OUT] the error message *
* *
* Returns: SUCCEED - the value was retrieved successfully *
* FAIL - otherwise *
* *
* Comments: The value is retrieved from collector (if it has been requested *
* before) or directly from Windows performance counters if *
* possible. *
* *
******************************************************************************/
int get_perf_counter_value_by_name(const char *name, double *value, char **error)
{
const char *__function_name = "get_perf_counter_value_by_name";
int ret = FAIL;
PERF_COUNTER_DATA *perfs = NULL;
char *counterpath = NULL;
zabbix_log(LOG_LEVEL_DEBUG, "In %s() name:%s", __function_name, name);
LOCK_PERFCOUNTERS;
if (SUCCEED != perf_collector_started())
{
*error = zbx_strdup(*error, "Performance collector is not started.");
goto out;
}
for (perfs = ppsd.pPerfCounterList; NULL != perfs; perfs = perfs->next)
{
if (NULL != perfs->name && 0 == strcmp(perfs->name, name))
{
if (PERF_COUNTER_ACTIVE != perfs->status)
break;
/* the counter data is already being collected, return it */
*value = compute_average_value(perfs, perfs->interval);
ret = SUCCEED;
goto out;
}
}
/* we can retrieve named counter data only if it has been registered before */
if (NULL == perfs)
{
*error = zbx_dsprintf(*error, "Unknown performance counter name: %s.", name);
goto out;
}
counterpath = zbx_strdup(counterpath, perfs->counterpath);
out:
UNLOCK_PERFCOUNTERS;
if (NULL != counterpath)
{
/* request counter value directly from Windows performance counters */
if (ERROR_SUCCESS == calculate_counter_value(__function_name, counterpath, value))
ret = SUCCEED;
zbx_free(counterpath);
}
zabbix_log(LOG_LEVEL_DEBUG, "End of %s():%s", __function_name, zbx_result_string(ret));
return ret;
}
/******************************************************************************
* *
* Function: get_perf_counter_value_by_path *
* *
* Purpose: gets average performance counter value *
* *
* Parameters: counterpath - [IN] the performance counter path *
* interval - [IN] the data collection interval in seconds *
* value - [OUT] the calculated value *
* error - [OUT] the error message *
* *
* Returns: SUCCEED - the value was retrieved successfully *
* FAIL - otherwise *
* *
* Comments: The value is retrieved from collector (if it has been requested *
* before) or directly from Windows performance counters if *
* possible. *
* *
******************************************************************************/
int get_perf_counter_value_by_path(const char *counterpath, int interval, double *value, char **error)
{
const char *__function_name = "get_perf_counter_value_by_path";
int ret = FAIL;
PERF_COUNTER_DATA *perfs = NULL;
zabbix_log(LOG_LEVEL_DEBUG, "In %s() path:%s interval:%d", __function_name, counterpath, interval);
LOCK_PERFCOUNTERS;
if (SUCCEED != perf_collector_started())
{
*error = zbx_strdup(*error, "Performance collector is not started.");
goto out;
}
for (perfs = ppsd.pPerfCounterList; NULL != perfs; perfs = perfs->next)
{
if (0 == strcmp(perfs->counterpath, counterpath))
{
if (perfs->interval < interval)
extend_perf_counter_interval(perfs, interval);
if (PERF_COUNTER_ACTIVE != perfs->status)
break;
/* the counter data is already being collected, return it */
*value = compute_average_value(perfs, interval);
ret = SUCCEED;
goto out;
}
}
/* if the requested counter is not already being monitored - start monitoring */
if (NULL == perfs)
perfs = add_perf_counter(NULL, counterpath, interval, error);
out:
UNLOCK_PERFCOUNTERS;
if (SUCCEED != ret && NULL != perfs)
{
/* request counter value directly from Windows performance counters */
if (ERROR_SUCCESS == calculate_counter_value(__function_name, counterpath, value))
ret = SUCCEED;
}
zabbix_log(LOG_LEVEL_DEBUG, "End of %s():%s", __function_name, zbx_result_string(ret));
return ret;
}
int USER_PERF_COUNTER(const char *cmd, const char *param, unsigned flags, AGENT_RESULT *result)
{
const char *__function_name = "USER_PERF_COUNTER";
PERF_COUNTER_DATA *perfs = NULL;
int ret = SYSINFO_RET_FAIL;
double value;
zabbix_log(LOG_LEVEL_DEBUG, "In %s()", __function_name);
if (!PERF_COLLECTOR_STARTED(collector))
{
zabbix_log(LOG_LEVEL_DEBUG, "Collector is not started!");
return ret;
}
for (perfs = collector->perfs.pPerfCounterList; NULL != perfs; perfs = perfs->next)
{
if (NULL != perfs->name && 0 == strcmp(perfs->name, param))
{
if (PERF_COUNTER_ACTIVE == perfs->status)
{
SET_DBL_RESULT(result, compute_average_value(__function_name, perfs, USE_DEFAULT_INTERVAL));
ret = SYSINFO_RET_OK;
}
break;
}
}
if (SYSINFO_RET_OK != ret && NULL != perfs)
{
if (ERROR_SUCCESS == calculate_counter_value(__function_name, perfs->counterpath, &value))
{
perfs->status = PERF_COUNTER_INITIALIZED;
SET_DBL_RESULT(result, value);
ret = SYSINFO_RET_OK;
}
}
zabbix_log(LOG_LEVEL_DEBUG, "End of %s()", __function_name);
return ret;
}
int PERF_COUNTER(const char *cmd, const char *param, unsigned flags, AGENT_RESULT *result)
{
const char *__function_name = "PERF_COUNTER";
char counterpath[PDH_MAX_COUNTER_PATH], tmp[MAX_STRING_LEN];
int ret = SYSINFO_RET_FAIL, interval;
double value;
PERF_COUNTER_DATA *perfs = NULL;
zabbix_log(LOG_LEVEL_DEBUG, "In %s()", __function_name);
if (2 < num_param(param))
goto clean;
if (0 != get_param(param, 1, counterpath, sizeof(counterpath)) || '\0' == *counterpath)
goto clean;
if (0 != get_param(param, 2, tmp, sizeof(tmp)) || '\0' == *tmp)
interval = 1;
else if (FAIL == is_uint(tmp))
goto clean;
else
interval = atoi(tmp);
if (FAIL == check_counter_path(counterpath))
goto clean;
if (1 < interval)
{
if (!PERF_COLLECTOR_STARTED(collector))
{
zabbix_log(LOG_LEVEL_DEBUG, "Collector is not started!");
goto clean;
}
for (perfs = collector->perfs.pPerfCounterList; NULL != perfs; perfs = perfs->next)
{
if (0 == strcmp(perfs->counterpath, counterpath) && perfs->interval == interval)
{
if (PERF_COUNTER_ACTIVE != perfs->status)
break;
SET_DBL_RESULT(result, compute_average_value(__function_name, perfs, USE_DEFAULT_INTERVAL));
ret = SYSINFO_RET_OK;
goto clean;
}
}
if (NULL == perfs && NULL == (perfs = add_perf_counter(NULL, counterpath, interval)))
goto clean;
}
if (ERROR_SUCCESS == calculate_counter_value(__function_name, counterpath, &value))
{
if (NULL != perfs)
perfs->status = PERF_COUNTER_INITIALIZED;
SET_DBL_RESULT(result, value);
ret = SYSINFO_RET_OK;
}
clean:
zabbix_log(LOG_LEVEL_DEBUG, "End of %s()", __function_name);
return ret;
}
