#!/bin/bash

# java ENV
JAVA_HOME=/usr/local/jdk1.8.0_241
JRE_HOME=${JAVA_HOME}/jre

# APP 
CUSTOM_CONFIG=0

# APP 路径
APP_HOME=/home/testdemo

# APP 名称
APP_NAME=$1

# APP 配置文件夹路径 
APP_CONFIG=${APP_HOME}/config/

# APP 多环境
APP_PROFILES_ACTIVE=prod

# APP 关闭方式 graceful （等待）none （不等待）
APP_SHUTDOWN=graceful

# 关闭等待时间，单位秒
APP_SHUTDOWN_TIMIOUT=30


# 提示
usage() {
	echo "Usage: sh boot [APP_NAME] [start|stop|restart|status]"
	exit 1
}

# 检查程序是否在运行
is_exist() {
	# 获取PID
	PID=$(ps -ef | grep ${APP_NAME} | grep -v $0 | grep -v grep | awk '{print $2}')
	# -z "${pid}"判断pid是否存在，如果不存在返回1，存在返回0
        if [ -z "${PID}" ]; then
                # 如果进程不存在返回 1
                return 1
        else
                # 进程存在返回 0
                return 0
        fi
}

# 启动
start() {
	is_exist
	if [ $? -eq "0" ]; then
		echo "${APP_NAME} is already running, PID=${PID}"
	else
		
		if [ "1" -eq "${CUSTOM_CONFIG}" ]; then
                	# 如果进程不存在返回 1
                	nohup ${JRE_HOME}/bin/java -jar ${APP_HOME}/${APP_NAME} --spring.config.location=${APP_CONFIG} --spring.profiles.active=${APP_PROFILES_ACTIVE} >/dev/null 2>&1 &			       	
		else
                	# 进程存在返回 0
                	nohup ${JRE_HOME}/bin/java -jar ${APP_HOME}/${APP_NAME} >/dev/null 2>&1 &
        	fi		
		PID=$(echo $!)
		echo "${APP_NAME} start success, PID=$!"
	fi
}

# 停止
stop(){
	is_exist
	if [ $? -eq "0" ]; then
		kill -15 ${PID}
		echo "${APP_NAME} process stop, PID=${PID}"
	else
		echo "There is not the process of ${APP_NAME}"
	fi
}

# 重启进程函数 
restart(){
        stop
        if [ "graceful" -eq "${APP_SHUTDOWN}" ]; then
                echo -n "${APP_NAME} process is restarting"
                for ((i=$APP_SHUTDOWN; i>0; i--))
                do
                        echo -n ".."
                        sleep 1
                done
        else
                echo "${APP_NAME} process is restarting"
        fi
        start
        sleep 2
        status
}

# 
status(){
        is_exist
        if [ $? -eq "0" ]; then
                echo "${APP_NAME} is running, PID=${PID}"
        else    
                echo "There is not the process of ${APP_NAME}"
        fi
}

case $2 in
        "start")
                start
                ;;
        "stop")
                stop
                ;;
        "restart")
                restart
                ;;
        "status")
                status
                ;;
        *)
                usage
                ;;
esac
exit 0