charts.d/sensors.chart.sh

   1 #!/bin/sh
   2
   3 # if this chart is called X.chart.sh, then all functions and global variables
   4 # must start with X_
   5
   6 sensors_sys_dir="/sys/class/hwmon"
   7 sensors_sys_depth=3
   8
   9 # _update_every is a special variable - it holds the number of seconds
  10 # between the calls of the _update() function
  11 sensors_update_every=
  12
  13 sensors_find_all_files() {
  14         find -L $1 -maxdepth $sensors_sys_depth -name temp\?_input -o -name temp -o -name in\?_input -o -name fan\?_input 2>/dev/null
  15 }
  16
  17 sensors_find_all_dirs() {
  18         sensors_find_all_files $1 | while read
  19         do
  20                 dirname $REPLY
  21         done | sort -u
  22 }
  23
  24 # _check is called once, to find out if this chart should be enabled or not
  25 sensors_check() {
  26
  27         # this should return:
  28         #  - 0 to enable the chart
  29         #  - 1 to disable the chart
  30
  31         [ ! -z "$( sensors_find_all_files $sensors_sys_dir )" ] && return 0
  32         return 1
  33 }
  34
  35 # _create is called once, to create the charts
  36 sensors_create() {
  37         local path= dir= name= x= file= lfile= labelname= labelid= device= subsystem= id= type= mode= files= multiplier= divisor=
  38
  39         echo >$TMP_DIR/temp.sh "sensors_update() {"
  40
  41         for path in $( sensors_find_all_dirs $sensors_sys_dir | sort -u )
  42         do
  43                 dir=$( basename $path )
  44                 device=
  45                 subsystem=
  46                 id=
  47                 type=
  48                 name=
  49
  50                 [ -h $path/device ] && device=$( readlink -f $path/device )
  51                 [ ! -z "$device" ] && device=$( basename $device )
  52                 [ -z "$device" ] && device="$dir"
  53
  54                 [ -h $path/subsystem ] && subsystem=$( readlink -f $path/subsystem )
  55                 [ ! -z "$subsystem" ] && subsystem=$( basename $subsystem )
  56                 [ -z "$subsystem" ] && subsystem="$dir"
  57
  58                 [ -f $path/name ] && name=$( cat $path/name )
  59                 [ -z "$name" ] && name="$dir"
  60
  61                 [ -f $path/type ] && type=$( cat $path/type )
  62                 [ -z "$type" ] && type="$dir"
  63
  64                 id="$( fixid "$device.$subsystem.$dir" )"
  65
  66                 echo >&2 "charts.d: sensors on path='$path', dir='$dir', device='$device', subsystem='$subsystem', id='$id', name='$name'"
  67
  68                 for mode in temperature voltage fans
  69                 do
  70                         files=
  71                         multiplier=1
  72                         divisor=1
  73                         case $mode in
  74                                 temperature)
  75                                         files="$( find -H $path -name temp\?_input -o -name temp | sort -u)"
  76                                         [ -z "$files" ] && continue
  77                                         echo "CHART sensors.temp_${id} '' '${name} Temperature' 'Temperature' 'Celcius Degrees' '' line 6000 $sensors_update_every"
  78                                         echo >>$TMP_DIR/temp.sh "echo \"BEGIN sensors.temp_${id} \$1\""
  79                                         divisor=1000
  80                                         ;;
  81
  82                                 voltage)
  83                                         files="$( find -H $path -name in\?_input )"
  84                                         [ -z "$files" ] && continue
  85                                         echo "CHART sensors.volt_${id} '' '${name} Voltage' 'Voltage' 'Volts' '' line 6001 $sensors_update_every"
  86                                         echo >>$TMP_DIR/temp.sh "echo \"BEGIN sensors.volt_${id} \$1\""
  87                                         divisor=1000
  88                                         ;;
  89
  90                                 fans)
  91                                         files="$( find -H $path -name fan\?_input )"
  92                                         [ -z "$files" ] && continue
  93                                         echo "CHART sensors.fan_${id} '' '${name} Fans Speed' 'Fans' 'Rotations Per Minute (RPM)' '' line 6002 $sensors_update_every"
  94                                         echo >>$TMP_DIR/temp.sh "echo \"BEGIN sensors.fan_${id} \$1\""
  95                                         ;;
  96
  97                                 *)
  98                                         continue
  99                                         ;;
 100                         esac
 101
 102                         for x in $files
 103                         do
 104                                 file="$x"
 105                                 fid="$( fixid "$file" )"
 106                                 lfile="$( basename $file | sed "s|_input$|_label|g" )"
 107                                 labelname="$( basename $file | sed "s|_input$||g" )"
 108
 109                                 if [ ! "$path/$lfile" = "$file" -a -f "$path/$lfile" ]
 110                                         then
 111                                         labelname="$( cat "$path/$lfile" )"
 112                                 fi
 113
 114                                 echo "DIMENSION $fid '$labelname' absolute $multiplier $divisor"
 115                                 echo >>$TMP_DIR/temp.sh "printf \"SET $fid = \"; cat $file "
 116                         done
 117
 118                         echo >>$TMP_DIR/temp.sh "echo END"
 119                 done
 120         done
 121
 122         echo >>$TMP_DIR/temp.sh "}"
 123         cat >&2 $TMP_DIR/temp.sh
 124         . $TMP_DIR/temp.sh
 125
 126         return 0
 127 }
 128
 129 # _update is called continiously, to collect the values
 130 sensors_update() {
 131         # the first argument to this function is the microseconds since last update
 132         # pass this parameter to the BEGIN statement (see bellow).
 133
 134         # do all the work to collect / calculate the values
 135         # for each dimension
 136         # remember: KEEP IT SIMPLE AND SHORT
 137
 138 #       . $TMP_DIR/temp.sh $1
 139
 140         return 0
 141 }
 142