added hwmon plugin

.gitignore

@@ -1,4 +1,5 @@
 *.o
+*.so
 *.d
 sammler
 sammler.log

Makefile

@@ -1,7 +1,7 @@
 # Toplevel Makefile
 WITH_RRD=yes
 
-PLUGINS := ctstat diskstat load memory mount netdev random rtstat stat uptime vmstat
+PLUGINS := ctstat diskstat hwmon load memory mount netdev random rtstat stat uptime vmstat
 PLUGINS += apache mysql conntrack
 
 DESTDIR =

plugins/.gitignore

@@ -1,3 +0,0 @@
-*.o
-*.so
-*.d

plugins/hwmon.c

@@ -0,0 +1,124 @@
+/***************************************************************************
+ *   Copyright (C) 10/2006 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 <string.h>
+
+#include "configfile.h"
+#include "helper.h"
+#include "list.h"
+#include "logging.h"
+#include "plugins.h"
+#include "probe.h"
+
+struct sammler_plugin plugin;
+
+struct hwmon_entry {
+	struct list_head list;
+	char *name;
+	char *path;
+};
+
+static LIST_HEAD(hwmon_list);
+
+static const char *ds_def = {
+	"DS:temp:GAUGE:15:0:U "
+};
+
+static const char * get_ds(int ds_id)
+{
+	return ds_def;
+}
+
+static int probe(void)
+{
+	struct hwmon_entry *entry;
+	list_for_each_entry(entry, &hwmon_list, list) {
+		FILE *fp = fopen(entry->path, "r");
+		if (fp == NULL) {
+			log_print(LOG_WARN, "plugin hwmon: fopen(%s)", entry->path);
+			continue;
+		}
+
+		int temp;
+		if (fscanf(fp, "%d\n", &temp) != 1) {
+			log_print(LOG_WARN, "plugin hwmon: fscanf()");
+			fclose(fp);
+			continue;
+		}
+		fclose(fp);
+
+		char filename[32];
+		int len = snprintf(filename, sizeof(filename), "hwmon-%s.rrd", entry->name);
+		if (len < 0 || len >= sizeof(filename))
+			continue;
+
+		probe_submit(&plugin, filename, 0, "%d", temp);
+	}
+	return 0;
+}
+
+static int init_cb(const char *parameter, void *privdata)
+{
+	char *part[2];
+	int ret = strsplit(parameter, ",", part, 2);
+	if (ret != 2) {
+		log_print(LOG_ERROR, "p_hwmon: parse error");
+		return -1;
+	}
+
+	struct hwmon_entry *entry = malloc(sizeof(struct hwmon_entry));
+	if (entry == NULL) {
+		log_print(LOG_ERROR, "p_hwmon: out of memory");
+		return -1;
+	}
+
+	entry->name = part[0];
+	entry->path = part[1];
+
+	log_print(LOG_DEBUG, "p_hwmon: added sensor '%s' (%s)", entry->name, entry->path);
+	list_add_tail(&entry->list, &hwmon_list);
+
+	return 0;
+}
+
+static int init(void)
+{
+	config_get_strings("p_hwmon", "temp", init_cb, NULL);
+	return 0;
+}
+
+static int fini(void)
+{
+	struct hwmon_entry *entry, *tmp;
+	list_for_each_entry_safe(entry, tmp, &hwmon_list, list)
+		free(entry);
+
+	return 0;
+}
+
+struct sammler_plugin plugin = {
+	.name		= "hwmon",
+	.interval	= 10,
+	.init		= &init,
+	.fini		= &fini,
+	.probe		= &probe,
+	.get_ds		= &get_ds,
+};

sammler.conf

@@ -38,3 +38,7 @@ rra RRA:MIN:0.5:4320:1440 RRA:AVERAGE:0.5:4320:1440 RRA:MAX:0.5:4320:1440
 
 [p_apache]
 #server name,url,user,password
+
+[p_hwmon]
+#temp board,/sys/class/hwmon/hwmon0/device/temp1_input
+#temp cpu,/sys/class/hwmon/hwmon0/device/temp2_input

sammler.php

@@ -171,6 +171,7 @@ function get_rrd_type($filename) {
 		"vmstat",
 		"random",
 		"uptime",
+		"hwmon",
 		"net",
 		"rtstat",
 		"rtcache",
@@ -515,6 +516,16 @@ function show_rrd($conf) {
 			'';
 		break;
 
+	case 'hwmon':
+		$cmd .= "--base=1000 --height={$height} --width={$width} --alt-autoscale-max --lower-limit=0 --vertical-label=\"Temperature\" ".
+			"DEF:a={$rrdfile}:temp:AVERAGE ".
+			"CDEF:aa=a,1000,/ ".
+			'CDEF:err=a,UN,INF,UNKN,IF '.
+			'AREA:err#FFD0D0 '.
+			'AREA:aa#00CF00:"Temperature" GPRINT:aa:LAST:"Current\:%8.2lf %s" GPRINT:aa:AVERAGE:"Average\:%8.2lf %s" GPRINT:aa:MAX:"Maximum\:%8.2lf %s" '.
+			'LINE1:aa#404040 ';
+		break;
+
 	case 'load':
 		$cmd .= "--base=1000 --height={$height} --width={$width} --alt-autoscale-max --lower-limit=0 --vertical-label=\"load\" ".
 			"DEF:a={$rrdfile}:1min:MAX ".