wrapper.sh

#!/bin/sh

SCRIPT=$(readlink -f "$0")
SCRIPTPATH=$(dirname "$SCRIPT")

cd $SCRIPTPATH

source /etc/init.d/functions

source ./.env

APP_CMD="target/release/$APP_NAME web > $APP_LOG 2>&1 &
  echo \$! > '$APP_PID'"

do_start() {

  touch $APP_PID
  [ $? -eq 0 ] && chown "${APP_USER}:" $APP_PID

  daemon \
    --user "${APP_USER}" \
    --pidfile "${APP_PID}" \
    "${APP_CMD}"
  return $?
}

do_stop() {
  killproc -p "${APP_PID}"
  return $?
}

do_restart() {
  local result
  do_stop
  result=$?
  if [ $result -eq 0 ]; then
    do_start
    result=$?
  fi
  return $result
}

do_status() {
  status -p "${APP_PID}" "$APP_NAME"
  return $?
}

do_usage() {
  echo $"Usage: $0 {start | stop | restart | status}"
  exit 1
}

case "$1" in
start)   do_start;   exit $? ;;
stop)    do_stop;    exit $? ;;
restart) do_restart; exit $? ;;
status)  do_status;  exit $? ;;
*)       do_usage;   exit  1 ;;
esac