rtu_linux_modules/scripts/serverdaemon

#!/bin/sh
# a daemon, start and monitor servers
# 2013-09-27 09:28 created by niujiuru
# 2026-01-05 13:40 updated by niujiuru
# 2026-03-10 09:10 updated by niujiuru

. "$(dirname "$0")/set_env"
. "$(dirname "$0")/modules/funcs/functions.sh"
export_env

INTERVAL=60
pidfile="${APPRUNS_PATH}/serverdaemon.pid"

if [ -f "$pidfile" ]; then
  pid=$(cat "$pidfile" 2>/dev/null)
  if [ -n "$pid" ] && kill -0 "$pid" 2>/dev/null; then
    exit 0
  fi
  rm -f "$pidfile"
fi

mkdir -p "$(dirname "$pidfile")"
echo $$ > "$pidfile"

start_if_needed()
{
  name="$1"
  path="${APPBINS_PATH}/${name}"
  lock="${APPRUNS_PATH}/${name}.lock"

  if ! is_running "$path"
  then
    rm -f "$lock"
    echo "starting $name: $path"
    "$path" &
  fi
}

while true
do
  start_if_needed "${YFKJ_SSHD}" # 远程运维服务
  start_if_needed "${APPNAME}"   # ㊣主应用程序

  sleep $INTERVAL
done