bin/khatus

   1 #! /bin/bash
   2
   3 set -e
   4
   5 consume() {
   6     pipe="$1"
   7     debug="$2"
   8     dir_bin="$3"
   9     prefixes_of_net_interfaces_to_show="$4"
  10     tail -f "$pipe" \
  11     | stdbuf -o L "$dir_bin"/khatus_controller \
  12         -v opt_debug="$debug" \
  13         -v opt_mpd_song_max_chars=10 \
  14         -v opt_prefixes_of_net_interfaces_to_show="$prefixes_of_net_interfaces_to_show"
  15 }
  16
  17 spawn() {
  18     pipe="$1"
  19     dir_bin="$2"
  20     cmd="$3"
  21     msg_head="$4"
  22     interval="$5"
  23     while true; do
  24         "$dir_bin"/$cmd | while read line; do
  25             echo "${msg_head} $line" > "$pipe"
  26         done
  27         sleep "$interval"
  28     done &
  29 }
  30
  31 main() {
  32     # Defaults
  33     debug=0
  34     dir_bin="$HOME/bin"
  35     dir_data=$(mktemp -d)
  36     weather_station_id='KJFK'
  37     screen_brightness_device_name='acpi_video0'
  38     prefixes_of_net_interfaces_to_show='w'  # comma-separated
  39     disk_space_device='/'
  40     disk_io_device='sda'
  41     thermal_zone=0
  42     fan_path='/proc/acpi/ibm/fan'
  43
  44     interval_inp_datetime=1
  45     interval_inp_brightness=1
  46     interval_inp_weather=$(( 30 * 60))  # 30 minutes
  47     interval_inp_mpd_state=1
  48     interval_inp_mpd_song=1
  49     interval_inp_volume=1
  50     interval_inp_bluetooth=5
  51     interval_inp_net_wifi=5
  52     interval_inp_net_io=1
  53     interval_inp_disk_space=5
  54     interval_inp_disk_io=1
  55     interval_inp_loadavg=1
  56     interval_inp_temp=1
  57     interval_inp_fan=1
  58     interval_inp_mem=1
  59     interval_inp_energy=1
  60
  61     # User-overrides
  62     # ---------------------------------------------------------------------
  63     # IMPORTANT:
  64     # In order for automatic value reporting, at startup, to work - ensure that
  65     # long option names match corresponding variable names!
  66     # ---------------------------------------------------------------------
  67     long_options=''
  68     long_options+='debug'
  69     long_options+=',dir_bin:'
  70     long_options+=',dir_data:'
  71     long_options+=',weather_station_id:'
  72     long_options+=',screen_brightness_device_name:'
  73     long_options+=',prefixes_of_net_interfaces_to_show:'
  74     long_options+=',disk_space_device:'
  75     long_options+=',disk_io_device:'
  76     long_options+=',thermal_zone:'
  77     long_options+=',fan_path:'
  78     long_options+=',interval_inp_datetime:'
  79     long_options+=',interval_inp_brightness:'
  80     long_options+=',interval_inp_weather:'
  81     long_options+=',interval_inp_mpd_state:'
  82     long_options+=',interval_inp_mpd_song:'
  83     long_options+=',interval_inp_volume:'
  84     long_options+=',interval_inp_bluetooth:'
  85     long_options+=',interval_inp_net_wifi:'
  86     long_options+=',interval_inp_net_io:'
  87     long_options+=',interval_inp_disk_space:'
  88     long_options+=',interval_inp_disk_io:'
  89     long_options+=',interval_inp_loadavg:'
  90     long_options+=',interval_inp_temp:'
  91     long_options+=',interval_inp_fan:'
  92     long_options+=',interval_inp_mem:'
  93     long_options+=',interval_inp_energy:'
  94     OPTS=$(
  95         getopt \
  96             -o 'd' \
  97             -l $long_options \
  98             -- "$@"
  99     )
 100     eval set -- "$OPTS"
 101     while true
 102     do
 103         case "$1" in
 104             -d|--debug)
 105                 debug=1
 106                 shift
 107                 ;;
 108             --dir_bin)
 109                 dir_bin="$2"
 110                 shift 2
 111                 ;;
 112             --dir_data)
 113                 dir_data="$2"
 114                 shift 2
 115                 ;;
 116             --weather_station_id)
 117                 weather_station_id="$2"
 118                 shift 2
 119                 ;;
 120             --screen_brightness_device_name)
 121                 screen_brightness_device_name="$2"
 122                 shift 2
 123                 ;;
 124             --prefixes_of_net_interfaces_to_show)
 125                 prefixes_of_net_interfaces_to_show="$2"
 126                 shift 2
 127                 ;;
 128             --disk_space_device)
 129                 disk_space_device="$2"
 130                 shift 2
 131                 ;;
 132             --disk_io_device)
 133                 disk_io_device="$2"
 134                 shift 2
 135                 ;;
 136             --thermal_zone)
 137                 thermal_zone="$2"
 138                 shift 2
 139                 ;;
 140             --fan_path)
 141                 fan_path="$2"
 142                 shift 2
 143                 ;;
 144             --interval_inp_datetime)
 145                 interval_inp_datetime="$2"
 146                 shift 2
 147                 ;;
 148             --interval_inp_brightness)
 149                 interval_inp_brightness="$2"
 150                 shift 2
 151                 ;;
 152             --interval_inp_weather)
 153                 interval_inp_weather="$2"
 154                 shift 2
 155                 ;;
 156             --interval_inp_mpd_state)
 157                 interval_inp_mpd_state="$2"
 158                 shift 2
 159                 ;;
 160             --interval_inp_mpd_song)
 161                 interval_inp_mpd_song="$2"
 162                 shift 2
 163                 ;;
 164             --interval_inp_volume)
 165                 interval_inp_volume="$2"
 166                 shift 2
 167                 ;;
 168             --interval_inp_bluetooth)
 169                 interval_inp_bluetooth="$2"
 170                 shift 2
 171                 ;;
 172             --interval_inp_net_wifi)
 173                 interval_inp_net_wifi="$2"
 174                 shift 2
 175                 ;;
 176             --interval_inp_net_io)
 177                 interval_inp_net_io="$2"
 178                 shift 2
 179                 ;;
 180             --interval_inp_disk_space)
 181                 interval_inp_disk_space="$2"
 182                 shift 2
 183                 ;;
 184             --interval_inp_disk_io)
 185                 interval_inp_disk_io="$2"
 186                 shift 2
 187                 ;;
 188             --interval_inp_loadavg)
 189                 interval_inp_loadavg="$2"
 190                 shift 2
 191                 ;;
 192             --interval_inp_temp)
 193                 interval_inp_temp="$2"
 194                 shift 2
 195                 ;;
 196             --interval_inp_fan)
 197                 interval_inp_fan="$2"
 198                 shift 2
 199                 ;;
 200             --interval_inp_mem)
 201                 interval_inp_mem="$2"
 202                 shift 2
 203                 ;;
 204             --interval_inp_energy)
 205                 interval_inp_energy="$2"
 206                 shift 2
 207                 ;;
 208             --)
 209                 shift
 210                 break
 211                 ;;
 212         esac
 213     done
 214
 215     pipe="$dir_data/khatus_data_pipe"
 216     screen_brightness_device_path='/sys/class/backlight'
 217     screen_brightness_device_path+="/$screen_brightness_device_name"
 218
 219     (
 220         echo '=============================================='
 221         echo "Khatus starting with the following parameters:"
 222         echo '=============================================='
 223         for param in \
 224             $(echo -n "$long_options" \
 225             | awk -v RS=, '{sub(":$", ""); print $0}'
 226             )
 227         do
 228             echo "$param := ${!param}"
 229         done \
 230         | column -ts:
 231         echo '----------------------------------------------'
 232     ) >&2
 233
 234     mkdir -p "$dir_data"
 235     rm -f "$pipe"
 236     mkfifo "$pipe"
 237
 238     cmd_sens_screen_brightness='khatus_sensor_screen_brightness'
 239     cmd_sens_screen_brightness+=" $screen_brightness_device_path"
 240
 241     cmd_sens_weather="khatus_sensor_weather $weather_station_id"
 242
 243     cmd_sens_disk_space="khatus_sensor_disk_space $disk_space_device"
 244
 245     cmd_sens_disk_io="khatus_sensor_disk_io $disk_io_device"
 246
 247     cmd_sens_temperature="khatus_sensor_temperature $thermal_zone"
 248
 249     cmd_sens_fan="khatus_sensor_fan $fan_path"
 250
 251     # TODO: Redirect each worker's stderr to a dedicated log file
 252     spawn "$pipe" "$dir_bin" khatus_sensor_datetime        'in:DATE_TIME'         $interval_inp_datetime
 253     spawn "$pipe" "$dir_bin" "$cmd_sens_screen_brightness" 'in:SCREEN_BRIGHTNESS' $interval_inp_brightness
 254     spawn "$pipe" "$dir_bin" "$cmd_sens_weather"           'in:WEATHER'           $interval_inp_weather
 255     spawn "$pipe" "$dir_bin" khatus_sensor_mpd_state       'in:MPD_STATE'         $interval_inp_mpd_state
 256     spawn "$pipe" "$dir_bin" khatus_sensor_mpd_song        'in:MPD_SONG'          $interval_inp_mpd_song
 257     spawn "$pipe" "$dir_bin" khatus_sensor_volume          'in:VOLUME'            $interval_inp_volume
 258     spawn "$pipe" "$dir_bin" khatus_sensor_bluetooth_power 'in:BLUETOOTH_POWER'   $interval_inp_bluetooth
 259     spawn "$pipe" "$dir_bin" khatus_sensor_net_wifi_status 'in:NET_WIFI_STATUS'   $interval_inp_net_wifi
 260     spawn "$pipe" "$dir_bin" khatus_sensor_net_addr_io     'in:NET_ADDR_IO'       $interval_inp_net_io
 261     spawn "$pipe" "$dir_bin" "$cmd_sens_disk_space"        'in:DISK_SPACE'        $interval_inp_disk_space
 262     spawn "$pipe" "$dir_bin" "$cmd_sens_disk_io"           'in:DISK_IO'           $interval_inp_disk_io
 263     spawn "$pipe" "$dir_bin" khatus_sensor_loadavg         'in:LOAD_AVG'          $interval_inp_loadavg
 264     spawn "$pipe" "$dir_bin" "$cmd_sens_temperature"       'in:TEMPERATURE'       $interval_inp_temp
 265     spawn "$pipe" "$dir_bin" "$cmd_sens_fan"               'in:FAN'               $interval_inp_fan
 266     spawn "$pipe" "$dir_bin" khatus_sensor_memory          'in:MEMORY'            $interval_inp_mem
 267     spawn "$pipe" "$dir_bin" khatus_sensor_energy          'in:ENERGY'            $interval_inp_energy
 268
 269     consume \
 270       "$pipe" \
 271       "$debug" \
 272       "$dir_bin" \
 273       "$prefixes_of_net_interfaces_to_show"
 274 }
 275
 276 main $@