rrd based system stats
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/***************************************************************************
* Copyright (C) 06/2006 by Olaf Rempel *
* razzor@kopf-tisch.de *
* *
* 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., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include "helper.h"
#include "plugins.h"
#include "probe.h"
struct sammler_plugin plugin;
static const char *ds_def = {
"DS:entropy:GAUGE:15:0:U "
};
static const char * get_ds(int ds_id)
{
return ds_def;
}
static int probe(void)
{
FILE *fp;
char buffer[32];
char *val[1];
fp = fopen("/proc/sys/kernel/random/entropy_avail", "r");
if (fp == NULL) {
log_print(LOG_WARN, "plugin random");
return -1;
}
if (fgets(buffer, sizeof(buffer), fp) == NULL) {
log_print(LOG_WARN, "plugin random");
fclose(fp);
return -1;
}
fclose(fp);
if (strsplit(buffer, " \t\n", val, 1) != 1)
return -1;
probe_submit(&plugin, "random.rrd", 0, "%s", val[0]);
return 0;
}
struct sammler_plugin plugin = {
.name = "random",
.interval = 10,
.probe = &probe,
.get_ds = &get_ds,
};