#!/bin/bash
# start  stop  restart
#这里可替换为自己的执行程序,其他无需更改
APP_NAME='xxx.jar'
CONFIG_NAME='application.properties'

#使用说明,用来提示输入参数
usage() {
    echo "Usage: sh $0 [start|stop|restart|status]"
    exit 1
}

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

#启动方法
start(){
  is_exist
  if [ $? -eq "0" ]; then
    echo "${APP_NAME} is already running. pid=${pid} ."
  else
    nohup java -server -jar -Xmx1024m $APP_NAME --spring.config.location=$CONFIG_NAME > /dev/null 2>&1 &
    echo "${APP_NAME} start success"
  fi
}

#停止方法
stop(){
  is_exist
  if [ $? -eq "0" ]; then
    kill -9 $pid
  else
    echo "${APP_NAME} is not running"
  fi
}

#输出运行状态
status(){
  is_exist
  if [ $? -eq "0" ]; then
    echo "${APP_NAME} is running. PID is ${pid}"
  else
    echo "${APP_NAME} is not running."
  fi
}

#重启
restart(){
  stop
  start
}

#根据输入参数,选择执行对应方法,不输入则执行使用说明
case "$1" in
  "start")
    start
    ;;
  "stop")
    stop
    ;;
  "status")
    status
    ;;
  "restart")
    restart
    ;;
  *)
    usage
    ;;
esac
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