103 lines
3.0 KiB
C
103 lines
3.0 KiB
C
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/***************************************************************************
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* Copyright (C) 04/2007 by Olaf Rempel *
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* razzor@kopf-tisch.de *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "logging.h"
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#include "plugins.h"
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#include "probe.h"
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#define BUFSIZE 1024
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struct sammler_plugin plugin;
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static char *buffer;
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static const char *ds_def = {
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"DS:read_cnt:COUNTER:15:0:U "
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"DS:read_sec:COUNTER:15:0:U "
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"DS:read_ms:COUNTER:15:0:U "
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"DS:write_cnt:COUNTER:15:0:U "
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"DS:write_sec:COUNTER:15:0:U "
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"DS:write_ms:COUNTER:15:0:U "
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};
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static const char * get_ds(int ds_id)
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{
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return ds_def;
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}
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static int probe(void)
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{
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FILE *fp = fopen("/proc/diskstats", "r");
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if (fp == NULL) {
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log_print(LOG_WARN, "plugin diskstats: fopen()");
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return -1;
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}
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while (fgets(buffer, BUFSIZE, fp) != NULL) {
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int major, minor;
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char device[16];
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unsigned int val[11];
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int cnt = sscanf(buffer, "%d %d %s %u %u %u %u %u %u %u %u %u %u %u",
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&major, &minor, device, &val[0],
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&val[1], &val[2], &val[3], &val[4],
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&val[5], &val[6], &val[7], &val[8],
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&val[9], &val[10]);
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if (cnt != 14 || val[0] == 0 || val[1] == 0)
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continue;
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char filename[32];
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int len = snprintf(filename, sizeof(filename), "disk-%s.rrd", device);
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if (len < 0 || len >= sizeof(filename))
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continue;
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probe_submit(&plugin, filename, 0,
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"%u:%u:%u:%u:%u:%u",
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val[0], val[2], val[3],
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val[4], val[6], val[7]);
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}
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fclose(fp);
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return 0;
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}
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static int init(void)
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{
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buffer = malloc(BUFSIZE);
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return (buffer == NULL) ? -1 : 0;
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}
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static int fini(void)
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{
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free(buffer);
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return 0;
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}
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struct sammler_plugin plugin = {
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.name = "diskstat",
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.interval = 10,
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.init = &init,
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.fini = &fini,
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.probe = &probe,
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.get_ds = &get_ds,
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};
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