#!/bin/sh -l
application=node_exporter
PORT=1888
CUR_IP=${hostname -I | awk '{print $1}'}
command="/opt/app/middles/node_exporter/node_exporter --web.listen-address=:$PORT"

# 停止
stop(){
	echo "================================停止================================"
	echo "IP ADDR:$CUR_IP"
	PID=$(lsof -t -i:${PORT})
	echo PID:$PID
	if [[ -z $PID]];then
		echo "$application stop fail,pid not exist"
	else
		kill -9 $PID
		echo "$application stop success"
	fi
}

# 启动
start(){
	echo "================================启动================================"
	echo "IP ADDR:$CUR_IP"
	PID=$(lsof -t -i:${PORT})
		if [[ -z $PID ]];then
			echo $command
			nohup $command >dev/null 2>$application.log &
			echo "$application starting........."
			sleep 3
			echo "start success!!!"
			PID=$(lsof -t -i:${PORT})
			echo "pid:$PID"
		else
			echo "$application already is running"
		fi
}

# 状态
status(){
	echo "================================状态================================"
	echo "IP ADDR:$CUR_IP"
	PID=$(lsof -t -i:${PORT})
	echo PID:$PID
	if [[ -z $PID]];then
		echo "$application is not running"
	else
		echo "$application is running"
	fi
}

USAGE="Usage: run.sh {启动:start | 停止:stop 状态:status}"
main(){
	cmd="${l:-}"
	case "$cmd" in
		start )
			start "$@"
			;;
		stop )
			stop "$@"
			;;
		status )
			status "$@"
			;;
		* )
		echo $USAGE
		exit 1
		;;
	esac	
}

main "$@"