charts.d/sensors.chart.sh

   1 #!/bin/sh
   2
   3 # sensors docs
   4 # https://www.kernel.org/doc/Documentation/hwmon/sysfs-interface
   5
   6 # if this chart is called X.chart.sh, then all functions and global variables
   7 # must start with X_
   8
   9 sensors_sys_dir="/sys/devices"
  10 sensors_sys_depth=10
  11 sensors_source_update=1
  12
  13 # _update_every is a special variable - it holds the number of seconds
  14 # between the calls of the _update() function
  15 sensors_update_every=
  16
  17 sensors_find_all_files() {
  18         find $1 -maxdepth $sensors_sys_depth -name \*_input -o -name temp 2>/dev/null
  19 }
  20
  21 sensors_find_all_dirs() {
  22         sensors_find_all_files $1 | while read
  23         do
  24                 dirname $REPLY
  25         done | sort -u
  26 }
  27
  28 # _check is called once, to find out if this chart should be enabled or not
  29 sensors_check() {
  30
  31         # this should return:
  32         #  - 0 to enable the chart
  33         #  - 1 to disable the chart
  34
  35         [ ! -z "$( sensors_find_all_files $sensors_sys_dir )" ] && return 0
  36         return 1
  37 }
  38
  39 sensors_check_files() {
  40         # we only need sensors that report a non-zero value
  41
  42         local f= v=
  43         for f in $*
  44         do
  45                 [ ! -f "$f" ] && continue
  46
  47                 v="$( cat $f )"
  48                 v=$(( v + 1 - 1 ))
  49                 [ $v -ne 0 ] && echo "$f" && continue
  50
  51                 echo >&2 "charts.d: sensors: $f gives zero values"
  52         done
  53 }
  54
  55 sensors_check_temp_type() {
  56         # valid temp types are 1 to 6
  57         # disabled sensors have the value 0
  58
  59         local f= t= v=
  60         for f in $*
  61         do
  62                 t=$( echo $f | sed "s|_input$|_type|g" )
  63                 [ "$f" = "$t" ] && echo "$f" && continue
  64                 [ ! -f "$t" ] && echo "$f" && continue
  65
  66                 v="$( cat $t )"
  67                 v=$(( v + 1 - 1 ))
  68                 [ $v -ne 0 ] && echo "$f" && continue
  69
  70                 echo >&2 "charts.d: sensors: $f is disabled"
  71         done
  72 }
  73
  74 # _create is called once, to create the charts
  75 sensors_create() {
  76         local path= dir= name= x= file= lfile= labelname= labelid= device= subsystem= id= type= mode= files= multiplier= divisor=
  77
  78         # we create a script with the source of the
  79         # sensors_update() function
  80         # - the highest speed we can achieve -
  81         [ $sensors_source_update -eq 1 ] && echo >$TMP_DIR/sensors.sh "sensors_update() {"
  82
  83         for path in $( sensors_find_all_dirs $sensors_sys_dir | sort -u )
  84         do
  85                 dir=$( basename $path )
  86                 device=
  87                 subsystem=
  88                 id=
  89                 type=
  90                 name=
  91
  92                 [ -h $path/device ] && device=$( readlink -f $path/device )
  93                 [ ! -z "$device" ] && device=$( basename $device )
  94                 [ -z "$device" ] && device="$dir"
  95
  96                 [ -h $path/subsystem ] && subsystem=$( readlink -f $path/subsystem )
  97                 [ ! -z "$subsystem" ] && subsystem=$( basename $subsystem )
  98                 [ -z "$subsystem" ] && subsystem="$dir"
  99
 100                 [ -f $path/name ] && name=$( cat $path/name )
 101                 [ -z "$name" ] && name="$dir"
 102
 103                 [ -f $path/type ] && type=$( cat $path/type )
 104                 [ -z "$type" ] && type="$dir"
 105
 106                 id="$( fixid "$device.$subsystem.$dir" )"
 107
 108                 echo >&2 "charts.d: sensors: on path='$path', dir='$dir', device='$device', subsystem='$subsystem', id='$id', name='$name'"
 109
 110                 for mode in temperature voltage fans power current energy humidity
 111                 do
 112                         files=
 113                         multiplier=1
 114                         divisor=1
 115                         algorithm="absolute"
 116
 117                         case $mode in
 118                                 temperature)
 119                                         files="$( ls $path/temp*_input 2>/dev/null; ls $path/temp 2>/dev/null )"
 120                                         files="$( sensors_check_files $files )"
 121                                         files="$( sensors_check_temp_type $files )"
 122                                         [ -z "$files" ] && continue
 123                                         echo "CHART sensors.temp_$id '' '$name Temperature' 'Celcius' '$device' '' line 6000 $sensors_update_every"
 124                                         echo >>$TMP_DIR/sensors.sh "echo \"BEGIN sensors.temp_$id \$1\""
 125                                         divisor=1000
 126                                         ;;
 127
 128                                 voltage)
 129                                         files="$( ls $path/in*_input 2>/dev/null )"
 130                                         files="$( sensors_check_files $files )"
 131                                         [ -z "$files" ] && continue
 132                                         echo "CHART sensors.volt_$id '' '$name Voltage' 'Volts' '$device' '' line 6001 $sensors_update_every"
 133                                         echo >>$TMP_DIR/sensors.sh "echo \"BEGIN sensors.volt_$id \$1\""
 134                                         divisor=1000
 135                                         ;;
 136
 137                                 current)
 138                                         files="$( ls $path/curr*_input 2>/dev/null )"
 139                                         files="$( sensors_check_files $files )"
 140                                         [ -z "$files" ] && continue
 141                                         echo "CHART sensors.curr_$id '' '$name Current' 'Ampere' '$device' '' line 6002 $sensors_update_every"
 142                                         echo >>$TMP_DIR/sensors.sh "echo \"BEGIN sensors.curr_$id \$1\""
 143                                         divisor=1000
 144                                         ;;
 145
 146                                 power)
 147                                         files="$( ls $path/power*_input 2>/dev/null )"
 148                                         files="$( sensors_check_files $files )"
 149                                         [ -z "$files" ] && continue
 150                                         echo "CHART sensors.power_$id '' '$name Power' 'Watt' '$device' '' line 6003 $sensors_update_every"
 151                                         echo >>$TMP_DIR/sensors.sh "echo \"BEGIN sensors.power_$id \$1\""
 152                                         divisor=1000000
 153                                         ;;
 154
 155                                 fans)
 156                                         files="$( ls $path/fan*_input 2>/dev/null )"
 157                                         files="$( sensors_check_files $files )"
 158                                         [ -z "$files" ] && continue
 159                                         echo "CHART sensors.fan_$id '' '$name Fans Speed' 'Rotations / Minute' '$device' '' line 6004 $sensors_update_every"
 160                                         echo >>$TMP_DIR/sensors.sh "echo \"BEGIN sensors.fan_$id \$1\""
 161                                         ;;
 162
 163                                 emergy)
 164                                         files="$( ls $path/energy*_input 2>/dev/null )"
 165                                         files="$( sensors_check_files $files )"
 166                                         [ -z "$files" ] && continue
 167                                         echo "CHART sensors.energy_$id '' '$name Energy' 'Joule' '$device' '' areastack 6005 $sensors_update_every"
 168                                         echo >>$TMP_DIR/sensors.sh "echo \"BEGIN sensors.energy_$id \$1\""
 169                                         algorithm="incremental"
 170                                         divisor=1000000
 171                                         ;;
 172
 173                                 humidity)
 174                                         files="$( ls $path/humidity*_input 2>/dev/null )"
 175                                         files="$( sensors_check_files $files )"
 176                                         [ -z "$files" ] && continue
 177                                         echo "CHART sensors.humidity_$id '' '$name Humidity' 'Percent' '$device' '' line 6006 $sensors_update_every"
 178                                         echo >>$TMP_DIR/sensors.sh "echo \"BEGIN sensors.humidity_$id \$1\""
 179                                         divisor=1000
 180                                         ;;
 181
 182                                 *)
 183                                         continue
 184                                         ;;
 185                         esac
 186
 187                         for x in $files
 188                         do
 189                                 file="$x"
 190                                 fid="$( fixid "$file" )"
 191                                 lfile="$( basename $file | sed "s|_input$|_label|g" )"
 192                                 labelname="$( basename $file | sed "s|_input$||g" )"
 193
 194                                 if [ ! "$path/$lfile" = "$file" -a -f "$path/$lfile" ]
 195                                         then
 196                                         labelname="$( cat "$path/$lfile" )"
 197                                 fi
 198
 199                                 echo "DIMENSION $fid '$labelname' $algorithm $multiplier $divisor"
 200                                 echo >>$TMP_DIR/sensors.sh "printf \"SET $fid = \"; cat $file "
 201                         done
 202
 203                         echo >>$TMP_DIR/sensors.sh "echo END"
 204                 done
 205         done
 206
 207         [ $cpufreq_source_update -eq 1 ] && echo >>$TMP_DIR/sensors.sh "}"
 208         # cat >&2 $TMP_DIR/sensors.sh
 209
 210         # ok, load the function sensors_update() we created
 211         [ $sensors_source_update -eq 1 ] && . $TMP_DIR/sensors.sh
 212
 213         return 0
 214 }
 215
 216 # _update is called continiously, to collect the values
 217 sensors_update() {
 218         # the first argument to this function is the microseconds since last update
 219         # pass this parameter to the BEGIN statement (see bellow).
 220
 221         # do all the work to collect / calculate the values
 222         # for each dimension
 223         # remember: KEEP IT SIMPLE AND SHORT
 224
 225         [ $sensors_source_update -eq 0 ] && . $TMP_DIR/sensors.sh $1
 226
 227         return 0
 228 }
 229