#!/usr/bin/env bash
### ================================================================================================
###     프로그램 명                     : proxyctl.bash, Version 0.00.011
###     프로그램 설명                   : OBCon Proxy를 관리 한다.
###     작성자                          : 산사랑 (pnuskgh@gmail.com, 010-5034-3931)
###     작성일                          : 2018.10.19 ~ 2024.02.07
### ----[History 관리]------------------------------------------------------------------------------
###     수정자                          :
###     수정일                          :
###     수정 내용                       :
### --- [Copyright] --------------------------------------------------------------------------------
###     Copyright (c) 1995~2024 pnuskgh, 오픈소스 비즈니스 컨설팅
###     All rights reserved.
### ================================================================================================

### ------------------------------------------------------------------------------------------------
###     초기 환경을 설정 합니다.
### ------------------------------------------------------------------------------------------------
export LANG=ko_KR.utf8
export TZ=Asia/Seoul

#--- NVM 사용에 따른 설정을 한다.
export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"  # This loads nvm
[ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"

HOME_SCADA="/work/appl/obcon"
if [[ "${HOSTNAME}" == "service.obcon.biz" ]]; then
    HOME_SCADA="/work/appl/OBCon_SCADA"
else
    HOME_SCADA="/work/appl/obcon"
fi
NODE=`which node`
# NODE='/root/.nvm/versions/node/v12.13.1/bin/node'

PROC_NAME="OBCon Proxy"
PROC_STR="${NODE} ${HOME_SCADA}/bin/proxy.js --conf config_scada_override.js"
JOB_LOG="${HOME_SCADA}/logs/watchdog_proxy.log"
TIMESTAMP=`date +%Y%m%d_%H%M%S`

### ------------------------------------------------------------------------------------------------
###     사용법을 표시 합니다.
### ------------------------------------------------------------------------------------------------
funcUsing() {
    echo "Using : proxyctl.bash COMMAND [OPTIONS]"
    echo "        COMMAND              : help, start, restart, stop, status, log, watchdog"
    echo " "
    exit 2
}

### ------------------------------------------------------------------------------------------------
###     OBCon Proxy 관리 함수
### ------------------------------------------------------------------------------------------------
funcStart() {
    local OPT=$1

    PROC_PID=`/bin/ps -ef | /bin/grep -v /bin/grep | /bin/grep "${PROC_STR}" | /bin/awk '{print $2}'`
    if [[ "${PROC_PID}" == "" ]]; then
        cd  ${HOME_SCADA}
        if [[ "${OPT}" == "systemctl" ]]; then
            ${NODE} /work/appl/obcon/bin/proxy.js --conf config_scada_override.js > /dev/null 2>&1 &
        else
            /bin/nohup ${NODE} /work/appl/obcon/bin/proxy.js --conf config_scada_override.js > /dev/null 2>&1 &
        fi
        /bin/echo "${PROC_NAME}를 시작 하였습니다. "
    else
        /bin/echo "${PROC_NAME}가 이미 살아 있습니다."
    fi

    /bin/sleep 1
    funcStatus
}

funcStop() {
    # /bin/curl --silent http://localhost/modbusapi/process --data '{"cmd":"q"}' --header "Content-Type:application/json;characterset=utf-8" --output /dev/null

    #--- Process가 죽지 않은 경우 강제로 죽인다.
    # /bin/sleep 1
    PROC_PID=`/bin/ps -ef | /bin/grep -v /bin/grep | /bin/grep "${PROC_STR}" | /bin/awk '{print $2}'`
    if [[ "${PROC_PID}" == "" ]]; then
        /bin/echo "${PROC_NAME}가 종료 되었습니다."
    else
        /bin/echo "${PROC_NAME}를 강제로 종료 합니다."
        for PID in ${PROC_PID}; do
            /bin/kill -9 ${PID} > /dev/null 2>&1
        done
    fi
}

funcRestart() {
    funcStop

    sleep 0.5
    funcStart
}

#--- 분 (0-59) 시 (0-23) 일 (1-31) 월 (1-12) 요일 (0. 일요일, 6. 토요일) 명령어
#---  * * * * * su - -c '/work/appl/obcon/proxyctl.bash watchdog'
funcWatchdog() {
    PROC_PID=`/bin/ps -ef | /bin/grep -v /bin/grep | /bin/grep "${PROC_STR}" | /bin/awk '{print $2}'`
    if [[ "${PROC_PID}" == "" ]]; then
        /bin/echo "OBCon Proxy 기동 : ${TIMESTAMP}" >> ${JOB_LOG}
        funcStart
    fi
}

funcStatus() {
    /bin/date

    /bin/ps -ef | /bin/grep -v /bin/grep | /bin/grep "${PROC_STR}"
    /usr/bin/echo ' '
}

### ------------------------------------------------------------------------------------------------
###     Command Line Argument를 확인 합니다.
### ------------------------------------------------------------------------------------------------
if [[ $# == 1 ]]; then
    COMMAND=$1
else
    funcUsing
fi

### ------------------------------------------------------------------------------------------------
###     Main process
### ------------------------------------------------------------------------------------------------
case ${COMMAND} in
    help)
        funcUsing
        ;;
    start)
        funcStart
        ;;
    start_systemctl)
        funcStart systemctl
        ;;
    restart)
        funcRestart
        ;;
    stop)
        funcStop
        ;;
    status)
        funcStatus
        ;;
    log)
        TODAY=`date +%Y%m%d`
        cd  /work/appl/OBCon_SCADA
        tail  -f  logs/obcon_proxy_${TODAY}_*  |  grep  -v  'logs/'
        ;;
    watchdog)
        funcWatchdog
        /usr/bin/sleep 10
        funcWatchdog
        /usr/bin/sleep 10
        funcWatchdog
        /usr/bin/sleep 10
        funcWatchdog
        /usr/bin/sleep 10
        funcWatchdog
        /usr/bin/sleep 10
        funcWatchdog
        ;;
    *)
        funcUsing
        ;;
esac
echo " "

exit 0
### ================================================================================================