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     log="$3"
  21     cmd="$4"
  22     msg_head="$5"
  23     interval="$6"
  24     while true; do
  25         "$dir_bin"/$cmd | while read line; do
  26             echo "${msg_head} $line" > "$pipe"
  27         done \
  28         2> "$log"
  29         sleep "$interval"
  30     done &
  31 }
  32
  33 main() {
  34     # Defaults
  35     debug=0
  36     dir_bin="$HOME/bin"
  37     dir_data=$(mktemp -d)
  38     weather_station_id='KJFK'
  39     screen_brightness_device_name='acpi_video0'
  40     prefixes_of_net_interfaces_to_show='w'  # comma-separated
  41     disk_space_device='/'
  42     disk_io_device='sda'
  43     thermal_zone=0
  44     fan_path='/proc/acpi/ibm/fan'
  45
  46     interval_inp_datetime=1
  47     interval_inp_brightness=1
  48     interval_inp_weather=$(( 30 * 60))  # 30 minutes
  49     interval_inp_mpd_state=1
  50     interval_inp_mpd_song=1
  51     interval_inp_volume=1
  52     interval_inp_bluetooth=5
  53     interval_inp_net_wifi=5
  54     interval_inp_net_io=1
  55     interval_inp_disk_space=5
  56     interval_inp_disk_io=1
  57     interval_inp_loadavg=1
  58     interval_inp_temp=1
  59     interval_inp_fan=1
  60     interval_inp_mem=1
  61     interval_inp_energy=1
  62
  63     # User-overrides
  64     # ---------------------------------------------------------------------
  65     # IMPORTANT:
  66     # In order for automatic value reporting, at startup, to work - ensure that
  67     # long option names match corresponding variable names!
  68     # ---------------------------------------------------------------------
  69     long_options=''
  70     long_options+='debug'
  71     long_options+=',dir_bin:'
  72     long_options+=',dir_data:'
  73     long_options+=',weather_station_id:'
  74     long_options+=',screen_brightness_device_name:'
  75     long_options+=',prefixes_of_net_interfaces_to_show:'
  76     long_options+=',disk_space_device:'
  77     long_options+=',disk_io_device:'
  78     long_options+=',thermal_zone:'
  79     long_options+=',fan_path:'
  80     long_options+=',interval_inp_datetime:'
  81     long_options+=',interval_inp_brightness:'
  82     long_options+=',interval_inp_weather:'
  83     long_options+=',interval_inp_mpd_state:'
  84     long_options+=',interval_inp_mpd_song:'
  85     long_options+=',interval_inp_volume:'
  86     long_options+=',interval_inp_bluetooth:'
  87     long_options+=',interval_inp_net_wifi:'
  88     long_options+=',interval_inp_net_io:'
  89     long_options+=',interval_inp_disk_space:'
  90     long_options+=',interval_inp_disk_io:'
  91     long_options+=',interval_inp_loadavg:'
  92     long_options+=',interval_inp_temp:'
  93     long_options+=',interval_inp_fan:'
  94     long_options+=',interval_inp_mem:'
  95     long_options+=',interval_inp_energy:'
  96     OPTS=$(
  97         getopt \
  98             -o 'd' \
  99             -l $long_options \
 100             -- "$@"
 101     )
 102     eval set -- "$OPTS"
 103     while true
 104     do
 105         case "$1" in
 106             -d|--debug)
 107                 debug=1
 108                 shift
 109                 ;;
 110             --dir_bin)
 111                 dir_bin="$2"
 112                 shift 2
 113                 ;;
 114             --dir_data)
 115                 dir_data="$2"
 116                 shift 2
 117                 ;;
 118             --weather_station_id)
 119                 weather_station_id="$2"
 120                 shift 2
 121                 ;;
 122             --screen_brightness_device_name)
 123                 screen_brightness_device_name="$2"
 124                 shift 2
 125                 ;;
 126             --prefixes_of_net_interfaces_to_show)
 127                 prefixes_of_net_interfaces_to_show="$2"
 128                 shift 2
 129                 ;;
 130             --disk_space_device)
 131                 disk_space_device="$2"
 132                 shift 2
 133                 ;;
 134             --disk_io_device)
 135                 disk_io_device="$2"
 136                 shift 2
 137                 ;;
 138             --thermal_zone)
 139                 thermal_zone="$2"
 140                 shift 2
 141                 ;;
 142             --fan_path)
 143                 fan_path="$2"
 144                 shift 2
 145                 ;;
 146             --interval_inp_datetime)
 147                 interval_inp_datetime="$2"
 148                 shift 2
 149                 ;;
 150             --interval_inp_brightness)
 151                 interval_inp_brightness="$2"
 152                 shift 2
 153                 ;;
 154             --interval_inp_weather)
 155                 interval_inp_weather="$2"
 156                 shift 2
 157                 ;;
 158             --interval_inp_mpd_state)
 159                 interval_inp_mpd_state="$2"
 160                 shift 2
 161                 ;;
 162             --interval_inp_mpd_song)
 163                 interval_inp_mpd_song="$2"
 164                 shift 2
 165                 ;;
 166             --interval_inp_volume)
 167                 interval_inp_volume="$2"
 168                 shift 2
 169                 ;;
 170             --interval_inp_bluetooth)
 171                 interval_inp_bluetooth="$2"
 172                 shift 2
 173                 ;;
 174             --interval_inp_net_wifi)
 175                 interval_inp_net_wifi="$2"
 176                 shift 2
 177                 ;;
 178             --interval_inp_net_io)
 179                 interval_inp_net_io="$2"
 180                 shift 2
 181                 ;;
 182             --interval_inp_disk_space)
 183                 interval_inp_disk_space="$2"
 184                 shift 2
 185                 ;;
 186             --interval_inp_disk_io)
 187                 interval_inp_disk_io="$2"
 188                 shift 2
 189                 ;;
 190             --interval_inp_loadavg)
 191                 interval_inp_loadavg="$2"
 192                 shift 2
 193                 ;;
 194             --interval_inp_temp)
 195                 interval_inp_temp="$2"
 196                 shift 2
 197                 ;;
 198             --interval_inp_fan)
 199                 interval_inp_fan="$2"
 200                 shift 2
 201                 ;;
 202             --interval_inp_mem)
 203                 interval_inp_mem="$2"
 204                 shift 2
 205                 ;;
 206             --interval_inp_energy)
 207                 interval_inp_energy="$2"
 208                 shift 2
 209                 ;;
 210             --)
 211                 shift
 212                 break
 213                 ;;
 214         esac
 215     done
 216
 217     pipe="$dir_data/khatus_data_pipe"
 218     screen_brightness_device_path='/sys/class/backlight'
 219     screen_brightness_device_path+="/$screen_brightness_device_name"
 220
 221     (
 222         echo '=============================================='
 223         echo "Khatus starting with the following parameters:"
 224         echo '=============================================='
 225         for param in \
 226             $(echo -n "$long_options" \
 227             | awk -v RS=, '{sub(":$", ""); print $0}'
 228             )
 229         do
 230             echo "$param := ${!param}"
 231         done \
 232         | column -ts:
 233         echo '----------------------------------------------'
 234     ) >&2
 235
 236     mkdir -p "$dir_data"
 237     rm -f "$pipe"
 238     mkfifo "$pipe"
 239
 240     cmd_sens_screen_brightness='khatus_sensor_screen_brightness'
 241     cmd_sens_screen_brightness+=" $screen_brightness_device_path"
 242
 243     cmd_sens_weather="khatus_sensor_weather $weather_station_id"
 244
 245     cmd_sens_disk_space="khatus_sensor_disk_space $disk_space_device"
 246
 247     cmd_sens_disk_io="khatus_sensor_disk_io $disk_io_device"
 248
 249     cmd_sens_temperature="khatus_sensor_temperature $thermal_zone"
 250
 251     cmd_sens_fan="khatus_sensor_fan $fan_path"
 252
 253     # TODO: Redirect each worker's stderr to a dedicated log file
 254     log="$dir_data"/sensors.log
 255     spawn "$pipe" "$dir_bin" "$log" khatus_sensor_datetime        'in:DATE_TIME'         $interval_inp_datetime
 256     spawn "$pipe" "$dir_bin" "$log" "$cmd_sens_screen_brightness" 'in:SCREEN_BRIGHTNESS' $interval_inp_brightness
 257     spawn "$pipe" "$dir_bin" "$log" "$cmd_sens_weather"           'in:WEATHER'           $interval_inp_weather
 258     spawn "$pipe" "$dir_bin" "$log" khatus_sensor_mpd_state       'in:MPD_STATE'         $interval_inp_mpd_state
 259     spawn "$pipe" "$dir_bin" "$log" khatus_sensor_mpd_song        'in:MPD_SONG'          $interval_inp_mpd_song
 260     spawn "$pipe" "$dir_bin" "$log" khatus_sensor_volume          'in:VOLUME'            $interval_inp_volume
 261     spawn "$pipe" "$dir_bin" "$log" khatus_sensor_bluetooth_power 'in:BLUETOOTH_POWER'   $interval_inp_bluetooth
 262     spawn "$pipe" "$dir_bin" "$log" khatus_sensor_net_wifi_status 'in:NET_WIFI_STATUS'   $interval_inp_net_wifi
 263     spawn "$pipe" "$dir_bin" "$log" khatus_sensor_net_addr_io     'in:NET_ADDR_IO'       $interval_inp_net_io
 264     spawn "$pipe" "$dir_bin" "$log" "$cmd_sens_disk_space"        'in:DISK_SPACE'        $interval_inp_disk_space
 265     spawn "$pipe" "$dir_bin" "$log" "$cmd_sens_disk_io"           'in:DISK_IO'           $interval_inp_disk_io
 266     spawn "$pipe" "$dir_bin" "$log" khatus_sensor_loadavg         'in:LOAD_AVG'          $interval_inp_loadavg
 267     spawn "$pipe" "$dir_bin" "$log" "$cmd_sens_temperature"       'in:TEMPERATURE'       $interval_inp_temp
 268     spawn "$pipe" "$dir_bin" "$log" "$cmd_sens_fan"               'in:FAN'               $interval_inp_fan
 269     spawn "$pipe" "$dir_bin" "$log" khatus_sensor_memory          'in:MEMORY'            $interval_inp_mem
 270     spawn "$pipe" "$dir_bin" "$log" khatus_sensor_energy          'in:ENERGY'            $interval_inp_energy
 271
 272     consume \
 273       "$pipe" \
 274       "$debug" \
 275       "$dir_bin" \
 276       "$prefixes_of_net_interfaces_to_show"
 277 }
 278
 279 main $@