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/devices"
   7 sensors_sys_depth=10
   8 sensors_source_update=1
   9
  10 # _update_every is a special variable - it holds the number of seconds
  11 # between the calls of the _update() function
  12 sensors_update_every=
  13
  14 sensors_find_all_files() {
  15         find $1 -maxdepth $sensors_sys_depth -name \*_input -o -name temp 2>/dev/null
  16 }
  17
  18 sensors_find_all_dirs() {
  19         sensors_find_all_files $1 | while read
  20         do
  21                 dirname $REPLY
  22         done | sort -u
  23 }
  24
  25 # _check is called once, to find out if this chart should be enabled or not
  26 sensors_check() {
  27
  28         # this should return:
  29         #  - 0 to enable the chart
  30         #  - 1 to disable the chart
  31
  32         [ ! -z "$( sensors_find_all_files $sensors_sys_dir )" ] && return 0
  33         return 1
  34 }
  35
  36 sensors_check_files() {
  37         # we only need sensors that report a non-zero value
  38
  39         local f= v=
  40         for f in $*
  41         do
  42                 [ ! -f "$f" ] && continue
  43
  44                 v="$( cat $f )"
  45                 v=$(( v + 1 - 1 ))
  46                 [ $v -ne 0 ] && echo "$f" && continue
  47
  48                 echo >&2 "charts.d: sensors: $f gives zero values"
  49         done
  50 }
  51
  52 sensors_check_temp_type() {
  53         # valid temp types are 1 to 6
  54         # disabled sensors have the value 0
  55
  56         local f= t= v=
  57         for f in $*
  58         do
  59                 t=$( echo $f | sed "s|_input$|_type|g" )
  60                 [ "$f" = "$t" ] && echo "$f" && continue
  61                 [ ! -f "$t" ] && echo "$f" && continue
  62
  63                 v="$( cat $t )"
  64                 v=$(( v + 1 - 1 ))
  65                 [ $v -ne 0 ] && echo "$f" && continue
  66
  67                 echo >&2 "charts.d: sensors: $f is disabled"
  68         done
  69 }
  70
  71 # _create is called once, to create the charts
  72 sensors_create() {
  73         local path= dir= name= x= file= lfile= labelname= labelid= device= subsystem= id= type= mode= files= multiplier= divisor=
  74
  75         # we create a script with the source of the
  76         # sensors_update() function
  77         # - the highest speed we can achieve -
  78         [ $sensors_source_update -eq 1 ] && echo >$TMP_DIR/temp.sh "sensors_update() {"
  79
  80         for path in $( sensors_find_all_dirs $sensors_sys_dir | sort -u )
  81         do
  82                 dir=$( basename $path )
  83                 device=
  84                 subsystem=
  85                 id=
  86                 type=
  87                 name=
  88
  89                 [ -h $path/device ] && device=$( readlink -f $path/device )
  90                 [ ! -z "$device" ] && device=$( basename $device )
  91                 [ -z "$device" ] && device="$dir"
  92
  93                 [ -h $path/subsystem ] && subsystem=$( readlink -f $path/subsystem )
  94                 [ ! -z "$subsystem" ] && subsystem=$( basename $subsystem )
  95                 [ -z "$subsystem" ] && subsystem="$dir"
  96
  97                 [ -f $path/name ] && name=$( cat $path/name )
  98                 [ -z "$name" ] && name="$dir"
  99
 100                 [ -f $path/type ] && type=$( cat $path/type )
 101                 [ -z "$type" ] && type="$dir"
 102
 103                 id="$( fixid "$device.$subsystem.$dir" )"
 104
 105                 echo >&2 "charts.d: sensors: on path='$path', dir='$dir', device='$device', subsystem='$subsystem', id='$id', name='$name'"
 106
 107                 for mode in temperature voltage fans power current energy humidity
 108                 do
 109                         files=
 110                         multiplier=1
 111                         divisor=1
 112                         algorithm="absolute"
 113
 114                         case $mode in
 115                                 temperature)
 116                                         files="$( ls $path/temp*_input 2>/dev/null; ls $path/temp 2>/dev/null )"
 117                                         files="$( sensors_check_files $files )"
 118                                         files="$( sensors_check_temp_type $files )"
 119                                         [ -z "$files" ] && continue
 120                                         echo "CHART sensors.temp_${id} '' '${name} Temperature' 'Celcius' '${device}' '' line 6000 $sensors_update_every"
 121                                         echo >>$TMP_DIR/temp.sh "echo \"BEGIN sensors.temp_${id} \$1\""
 122                                         divisor=1000
 123                                         ;;
 124
 125                                 voltage)
 126                                         files="$( ls $path/in*_input 2>/dev/null )"
 127                                         files="$( sensors_check_files $files )"
 128                                         [ -z "$files" ] && continue
 129                                         echo "CHART sensors.volt_${id} '' '${name} Voltage' 'Volts' '${device}' '' line 6001 $sensors_update_every"
 130                                         echo >>$TMP_DIR/temp.sh "echo \"BEGIN sensors.volt_${id} \$1\""
 131                                         divisor=1000
 132                                         ;;
 133
 134                                 current)
 135                                         files="$( ls $path/curr*_input 2>/dev/null )"
 136                                         files="$( sensors_check_files $files )"
 137                                         [ -z "$files" ] && continue
 138                                         echo "CHART sensors.curr_${id} '' '${name} Current' 'Ampere' '${device}' '' line 6002 $sensors_update_every"
 139                                         echo >>$TMP_DIR/temp.sh "echo \"BEGIN sensors.curr_${id} \$1\""
 140                                         divisor=1000
 141                                         ;;
 142
 143                                 power)
 144                                         files="$( ls $path/power*_input 2>/dev/null )"
 145                                         files="$( sensors_check_files $files )"
 146                                         [ -z "$files" ] && continue
 147                                         echo "CHART sensors.power_${id} '' '${name} Power' 'Watt' '${device}' '' line 6003 $sensors_update_every"
 148                                         echo >>$TMP_DIR/temp.sh "echo \"BEGIN sensors.power_${id} \$1\""
 149                                         divisor=1000000
 150                                         ;;
 151
 152                                 fans)
 153                                         files="$( ls $path/fan*_input 2>/dev/null )"
 154                                         files="$( sensors_check_files $files )"
 155                                         [ -z "$files" ] && continue
 156                                         echo "CHART sensors.fan_${id} '' '${name} Fans Speed' 'Rotations / Minute' '${device}' '' line 6004 $sensors_update_every"
 157                                         echo >>$TMP_DIR/temp.sh "echo \"BEGIN sensors.fan_${id} \$1\""
 158                                         ;;
 159
 160                                 emergy)
 161                                         files="$( ls $path/energy*_input 2>/dev/null )"
 162                                         files="$( sensors_check_files $files )"
 163                                         [ -z "$files" ] && continue
 164                                         echo "CHART sensors.energy_${id} '' '${name} Energy' 'Joule' '${device}' '' areastack 6005 $sensors_update_every"
 165                                         echo >>$TMP_DIR/temp.sh "echo \"BEGIN sensors.energy_${id} \$1\""
 166                                         algorithm="incremental"
 167                                         divisor=1000000
 168                                         ;;
 169
 170                                 humidity)
 171                                         files="$( ls $path/humidity*_input 2>/dev/null )"
 172                                         files="$( sensors_check_files $files )"
 173                                         [ -z "$files" ] && continue
 174                                         echo "CHART sensors.humidity_${id} '' '${name} Humidity' 'Percent' '${device}' '' line 6006 $sensors_update_every"
 175                                         echo >>$TMP_DIR/temp.sh "echo \"BEGIN sensors.humidity_${id} \$1\""
 176                                         divisor=1000
 177                                         ;;
 178
 179                                 *)
 180                                         continue
 181                                         ;;
 182                         esac
 183
 184                         for x in $files
 185                         do
 186                                 file="$x"
 187                                 fid="$( fixid "$file" )"
 188                                 lfile="$( basename $file | sed "s|_input$|_label|g" )"
 189                                 labelname="$( basename $file | sed "s|_input$||g" )"
 190
 191                                 if [ ! "$path/$lfile" = "$file" -a -f "$path/$lfile" ]
 192                                         then
 193                                         labelname="$( cat "$path/$lfile" )"
 194                                 fi
 195
 196                                 echo "DIMENSION $fid '$labelname' $algorithm $multiplier $divisor"
 197                                 echo >>$TMP_DIR/temp.sh "printf \"SET $fid = \"; cat $file "
 198                         done
 199
 200                         echo >>$TMP_DIR/temp.sh "echo END"
 201                 done
 202         done
 203
 204         echo >>$TMP_DIR/temp.sh "}"
 205         # cat >&2 $TMP_DIR/temp.sh
 206
 207         # ok, load the function sensors_update() we created
 208         [ $sensors_source_update -eq 1 ] && . $TMP_DIR/temp.sh
 209
 210         return 0
 211 }
 212
 213 # _update is called continiously, to collect the values
 214 sensors_update() {
 215         # the first argument to this function is the microseconds since last update
 216         # pass this parameter to the BEGIN statement (see bellow).
 217
 218         # do all the work to collect / calculate the values
 219         # for each dimension
 220         # remember: KEEP IT SIMPLE AND SHORT
 221
 222         [ $sensors_source_update -eq 0 ] && . $TMP_DIR/temp.sh $1
 223
 224         return 0
 225 }
 226