play-framework-init.d

#!/bin/sh

### BEGIN INIT INFO
# Provides:          appname
# Required-Start:    $local_fs $remote_fs $network $syslog
# Required-Stop:     $local_fs $remote_fs $network $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts appname server
# Description:       starts appname server using start-stop-daemon
### END INIT INFO
### HOW TO
# 1. cd $APP_DIR
# 2. activator stage
# 3. ln -s $APP_DIR /usr/share/appname
# 4. cp $THIS_FILE /etc/init.d
# 5. chmod +x /etc/init.d/$THIS_FILE
# 6. update-rc.d appcivist-backend defaults
# 7. service appname start
###

PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/opt/node/bin"
APP_DIR="/usr/share/appname"
APP_BIN="target/universal/stage/bin/appname"
USER="appname"
GROUP="appname"
DESC="appname description"
NAME="appname"

set -e

. /lib/lsb/init-functions

start() {
  echo "Starting $DESC... "

  start-stop-daemon --start --chuid "$USER:$GROUP" --background --exec $APP_DIR/$APP_BIN
  echo "done"
}

#We need this function to ensure the whole process tree will be killed
killtree() {
    local _pid=$1
    local _sig=${2-TERM}
    for _child in $(ps -o pid --no-headers --ppid ${_pid}); do
        killtree ${_child} ${_sig}
    done
    kill -${_sig} ${_pid}
}

stop() {
  echo "Stopping $DESC... "
  if test -f /var/run/$NAME/play.pid; then
    while test -d /proc/$(cat /var/run/$NAME/play.pid); do
      killtree $(cat /var/run/$NAME/play.pid) 15
      sleep 0.5
    done
    rm /var/run/$NAME/play.pid
  fi
  echo "done"
}

status() {
  status_of_proc -p /var/run/$NAME/play.pid "" "appname" && exit 0 || exit $?
}

case "$1" in
  start)
      start
      ;;
  stop)
    stop
      ;;
  restart)
      stop
      start
      ;;
  status)
      status
      ;;
  *)
      echo "Usage: $NAME {start|stop|restart|status}" >&2
      exit 1
      ;;
esac

exit 0