#! /bin/bash
export LANG=en_US.UTF-8

CURNUM=             #当前的性能参数

DataResultStr=      #性能参数字符串

FLAGE=
FLAGEID=
#是否输出FLAGPID
FLAGEOPID=1
#是否输出RUNTIME
RUNTIME=1
#是否输出STARTTIME
STARTTIME=0
CORENUM=1

PORT=
programalive_acquisition_json=""


function gotErr(){
    if [ "$1" -eq 0 ];then
        echo "mailstatedes=各项指标恢复正常 statedes=各项指标恢复正常|$DataResultStr"
    elif [ "$1" -eq 3 ];then 
        echo "无法获取到指标,疑似组件故障,请确认并请检查监控脚本和运维平台配置"
    elif [ "$1" -eq 4 ];then
        echo "该组件进程为僵尸进程,请确认并请检查该组件状态"
    fi

    exit $1
}

#返回是否服务是否存活
function isAlive(){
    CORENUM=`cat /proc/cpuinfo |grep "physical id"|wc -l`
    FF=$(echo "$FLAGE"|awk -F ',' '{print $1}')
    PP=$(echo "$FLAGE"|awk -F ',' '{print $2}')
    FLAGEID=$(netstat -lnp | grep -w $PORT|awk '{for(i=1;i<=NF;++i){if(index($i,"/")>=1){print $i}}}'|awk -F '/' '{print $1}')
    if [[ "$FLAGEID" == "" ]];then
        gotErr 3
    fi
    ZOMBIE=$(ps -A -opid | grep -e '^[Zz]' | grep $FLAGEID)
    if [[ "$ZOMBIE" != "" ]];then
       gotErr 4
    fi
    programalive_acquisition_json="$programalive_acquisition_json,'FLAGEPID':'$FLAGEID'"
}


#处理连接数
function getConnNum(){
    CURNUM=$(netstat -apn | grep $FLAGEID| grep ESTABLISHED  | wc -l)
    programalive_acquisition_json="$programalive_acquisition_json,'connnum':'$CURNUM'"
}

#ps aux 4是内存 累加4的值
function getMemory(){
    CURNUM=$(ps aux | grep $FLAGEID |awk 'BEGIN{sum=0}{sum+=$4}END{print sum}')
    programalive_acquisition_json="$programalive_acquisition_json,'memory':'$CURNUM'"
}

#ps aux 3是CPU 累加3的值
function getCPU(){
    CURNUM=$(ps aux | grep $FLAGEID |awk 'BEGIN{sum=0}{sum+=$3}END{print sum}')
    if [ "$CORENUM" -ne 0 ];then
       CURNUM=$(printf "%.2f" `echo "scale=2;$CURNUM/$CORENUM" | bc`)
    fi
    programalive_acquisition_json="$programalive_acquisition_json,'cpu':'$CURNUM'"
}

#ps elm 是PID所包含的线程数目
function getThreadNum(){
    CURNUM=$(ps -mp $FLAGEID |wc -l | awk 'BEGIN{sum=0}{sum=$1-2}END{print sum}')
    programalive_acquisition_json="$programalive_acquisition_json,'threadnum':'$CURNUM'"
}

#ps -eo pid,etime 是查询进程运行时间
function getRuntime(){
    CURNUM=$(ps -eo pid,etime | grep $FLAGEID |awk '{if($1=='$FLAGEID') print $2}')
    programalive_acquisition_json="$programalive_acquisition_json,'runtime':'$CURNUM'"
}

#ps -eo pid,lstart是查询进程的开始时间
function getStarttime(){
    CURNUM=$(ps -eo pid,lstart | grep $FLAGEID |awk '{if($1=='$FLAGEID') print $2 ,$3 ,$4 ,$5 ,$6}')
    programalive_acquisition_json="$programalive_acquisition_json,'starttime':'$CURNUM'"
}
#依据传入的参数值来判断我们要监控的服务是什么
#然后通过各个函数获取到具体的值
#值之间的
function analysisStat(){
    getConnNum
    #parseFileds "ConnectionNum"

    getMemory
    #parseFileds "Memory"

    getCPU
    #parseFileds "CPU"

    getThreadNum
    #parseFileds "Thread"

    #if [ "$FLAGEOPID" -eq 1 ];then
        #CURNUM=$FLAGEID
        #parseTimeFileds "FLAGEPID" $CURNUM $CURNUM
    #fi
    #if [ "$RUNTIME" -eq 1 ];then
        getRuntime
        #parseTimeFileds "RUNTIME" $RUNTIME $RUNTIME
    #fi
    #if [ "$STARTTIME" -eq 1 ];then
        getStarttime
       #parseTimeFileds "STARTTIME" $STARTTIME $STARTTIME
    #fi

    result="{'cpname':'hbase',${programalive_acquisition_json#*,}}"
    result=`echo ${result//\'/\"}`
    echo $result
}
function parseTimeFileds(){
    val1=$(echo "$CURNUM $2")
    val2=$(echo "$CURNUM $3")
    DataResultStr="$DataResultStr $1=$CURNUM;$2;$3;0;0"
}

function parseFileds(){
    DataResultStr="$DataResultStr $1=$CURNUM"
}

#分析结果 给出给出状态
function analysisResult(){
    gotErr 0
}

#输出错误信息并且退出程序
function showHelp(){
    if [ "$1" != "" ];then
        echo "请输入$1"
    fi
    echo "check_hbase.sh 用于监控进程的存活状态,并收集CPU,内存,连接数及线程数 参数如下"
    echo "check_hbase.sh -p <port>"
    echo "-p <port> 端口号"
    exit 1
}


while getopts "p:h" arg
do
    case $arg in
        h)
            showHelp
            ;;
        p)
            PORT=$OPTARG
            ;;
        ?) 
            showHelp
            ;;
    esac
done

if [[ "$PORT" == "" ]];then
    showHelp "特征项"
fi


#插件正题部分 
#确定存活的
#启动
#分析

isAlive
analysisStat
#analysisResult

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