utils/watchcat/files/initd_watchcat

   1 #!/bin/sh /etc/rc.common
   2
   3 START=97
   4
   5 PIDFILE="/tmp/run/watchcat"
   6
   7 append_string() {
   8         local varname="$1"; local add="$2"; local separator="${3:- }"; local actual
   9         eval "actual=\$$varname"
  10
  11         new="${actual:+$actual$separator}$add"
  12         eval "$varname=\$new"
  13 }
  14
  15 timetoseconds() {
  16         local time=$1
  17         unset seconds
  18
  19         { [ "$time" -ge 1 ] 2> /dev/null && seconds="$time"; } || \
  20         { [ "${time%s}" -ge 1 ] 2> /dev/null && seconds="${time%s}"; } || \
  21         { [ "${time%m}" -ge 1 ] 2> /dev/null && seconds=$((${time%m}*60)); } || \
  22         { [ "${time%h}" -ge 1 ] 2> /dev/null && seconds=$((${time%h}*3600)); } || \
  23         { [ "${time%d}" -ge 1 ] 2> /dev/null && seconds=$((${time%d}*86400)); }
  24 }
  25
  26 load_watchcat() {
  27         config_get period       $1 period
  28         config_get mode         $1 mode         "allways"
  29         config_get pinghosts    $1 pinghosts    "8.8.8.8"
  30         config_get pingperiod   $1 pingperiod
  31         config_get forcedelay   $1 forcedelay   "0"
  32
  33         error=""
  34
  35         timetoseconds "$period"
  36         period="$seconds"
  37         [ "$period" -ge 1 ] \
  38                 || append_string "error" 'period is not a valid time value (ex: "30"; "4m"; "6h"; "2d")' "; "
  39         [ "$mode" = "allways" -o "$mode" = "ping" ] \
  40                 || append_string "error" "mode must be 'allways' or 'ping'" "; "
  41         [ -n "$pinghosts" -o "$mode" = "allways" ] \
  42                 || append_string "error" "pinghosts must be set when in 'ping' mode" "; "
  43         [ "$mode" = "ping" ] && {
  44                 if [ -n "$pingperiod" ]
  45                 then
  46                         timetoseconds "$pingperiod"
  47                         pingperiod="$seconds"
  48                         if [ "$pingperiod" -ge 0 ]
  49                         then
  50                                 [ "$pingperiod" -le "$period" ] \
  51                                         || append_string "error" "pingperiod must be less than period" "; "
  52                         else
  53                                 append_string "error" 'pingperiod is not a valid time value (ex: "30"; "4m"; "6h"; "2d")' "; "
  54                         fi
  55                 else
  56                         pingperiod="$((period/20))"
  57                 fi
  58         }
  59         [ "$pingperiod" -lt "$period" -o "$mode" = "allways" ] \
  60                 || append_string "error" "pingperiod is not recognized" "; "
  61         [ "$forcedelay" -ge 0 ] \
  62                 || append_string "error" "forcedelay must be a integer greater or equal than 0, where 0 means disabled" "; "
  63
  64         [ -n "$error" ] && { logger -p user.err -t "watchcat" "reboot program $1 not started - $error"; return; }
  65
  66         if [ "$mode" = "allways" ]
  67         then
  68                 /usr/bin/watchcat.sh "allways" "$period" "$forcedelay" &
  69                 logger -p user.info -t "wathchat" "started task (mode=$mode;period=$period;forcedelay=$forcedelay)"
  70         else
  71                 /usr/bin/watchcat.sh "period" "$period" "$forcedelay" "$pinghosts" "$pingperiod" &
  72                 logger -p user.info -t "wathchat" "started task (mode=$mode;period=$period;pinghosts=$pinghosts;pingperiod=$pingperiod;forcedelay=$forcedelay)"
  73         fi
  74
  75         echo $! >> "${PIDFILE}.pids"
  76 }
  77
  78 stop() {
  79         if [ -f "${PIDFILE}.pids" ]
  80         then
  81                 logger -p user.info -t "watchcat" "stopping all tasks"
  82
  83                 while read pid
  84                 do
  85                         kill "$pid"
  86                 done < "${PIDFILE}.pids"
  87
  88                 rm "${PIDFILE}.pids"
  89
  90                 logger -p user.info -t "watchcat" "all tasks stopped"
  91         else
  92                 logger -p user.info -t "watchcat" "no tasks running"
  93         fi
  94 }
  95
  96 start() {
  97         [ -f "${PIDFILE}.pids" ] && stop
  98
  99         config_load system
 100         if [ -n "$(uci show system.@watchcat[0])" ] # at least one watchcat section exists
 101         then
 102                 logger -p user.info -t "watchcat" "starting all tasks"
 103                 config_foreach load_watchcat watchcat
 104                 logger -p user.info -t "watchcat" "all tasks started"
 105         else
 106                 logger -p user.info -t "watchcat" "no tasks defined"
 107         fi
 108 }