135 lines
3.6 KiB
C
135 lines
3.6 KiB
C
/***************************************************************************
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* Copyright (C) 06/2006 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 DS_MEMORY 1
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#define DS_SWAP 2
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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 *mem_ds_def = {
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"DS:total:GAUGE:15:0:U "
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"DS:free:GAUGE:15:0:U "
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"DS:buffers:GAUGE:15:0:U "
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"DS:cached:GAUGE:15:0:U "
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};
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static const char *swap_ds_def = {
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"DS:total:GAUGE:15:0:U "
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"DS:free:GAUGE: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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switch (ds_id) {
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case DS_MEMORY:
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return mem_ds_def;
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case DS_SWAP:
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return swap_ds_def;
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default:
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return NULL;
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}
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}
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struct meminfo_ {
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unsigned long long memtotal;
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unsigned long long memfree;
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unsigned long long buffers;
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unsigned long long cached;
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unsigned long long swaptotal;
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unsigned long long swapfree;
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};
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static int probe(void)
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{
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FILE *fp;
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struct meminfo_ meminfo;
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memset(&meminfo, 0, sizeof(meminfo));
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fp = fopen("/proc/meminfo", "r");
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if (fp == NULL) {
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log_print(LOG_WARN, "plugin memory");
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return -1;
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}
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while (fgets(buffer, BUFSIZE, fp) != NULL) {
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if (!strncmp(buffer, "MemTotal:", 9))
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meminfo.memtotal = atoll(buffer + 10);
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else if (!strncmp(buffer, "MemFree:", 8))
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meminfo.memfree = atoll(buffer + 9);
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else if (!strncmp(buffer, "Buffers:", 8))
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meminfo.buffers = atoll(buffer + 9);
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else if (!strncmp(buffer, "Cached:", 7))
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meminfo.cached = atoll(buffer + 8);
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else if (!strncmp(buffer, "SwapTotal:", 10))
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meminfo.swaptotal = atoll(buffer + 11);
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else if (!strncmp(buffer, "SwapFree:", 9))
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meminfo.swapfree = atoll(buffer + 10);
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}
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probe_submit(&plugin, "memory.rrd", DS_MEMORY, "%llu:%llu:%llu:%llu",
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meminfo.memtotal, meminfo.memfree,
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meminfo.buffers, meminfo.cached);
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probe_submit(&plugin, "swap.rrd", DS_SWAP, "%llu:%llu",
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meminfo.swaptotal, meminfo.swapfree);
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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 = "memory",
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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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