#!/bin/sh
###############################################################################################################
#Script name: installDatax.sh
#Script description: Install Datax.
#Current Release Version: 1.0.0
#Script Owner: He ,Haibo
#Latest editor: He, Haibo
#Support platform:  Linux OS for redhat and centos.
#Date: 2021/8/17---first Version for install Datax.
#Change log:
#Descript:Put software to /var/www/html/software directory,make ${downLoadIp} as httpd server.
#All install software will be in httpd server
###############################################################################################################
###Define Shell variables
export LANG=en_US
osbox=`uname`
RHversion=$(cat /proc/version | sed 's/[^0-9]//g' | cut -b -3)
####Defile httpd downLoad IP
downLoadIp=192.168.56.100
#######Set datax user and password,"wwwwww" is a example
dataxUser=datax
dataxUserPassword=wwwwww

###创建Log目录
mkdirLogPath(){    
    if [[ ! -d /tmp/log ]];then
        mkdir -p /tmp/log
        chmod 767 /tmp/log
    fi
    dataxLogPath="/tmp/log"
    dataxLog=datax_$(date +%y%m%d).log
}

###Get OS Arch Linux or not
getOsArch(){
    if [[ "$osbox" == "Linux" ]];then
        continue
    else
        echo "Current OS is $osbox,shell is exit now." | tee $dataxLogPath/$dataxLog
        echo 0
        exit 0
    fi
}

###Get redhat or centos
getOsCentosOrRedhat(){
    cat /proc/version | grep -iE "redhat|centos" > /dev/null
    if [[ $? == 0 ]];then
        continue
    else
        echo "Current OS is not centos or redhat." | tee -a $dataxLogPath/$dataxLog
        echo 1
        exit 1
    fi
}

###Get OS Version
getOsVerion(){
    ###判断系统是否为Redhat,如果不是则退出，支持Redhat|Centos 7版本
    cat /proc/version | grep -i redhat > /dev/null
    if [[ $? == 0 ]];then
        if [[ "$RHversion" -ge 310 ]];then 
            OSVersion="redhat7"
        else
            echo "Current Rehat Version will not support." | tee -a $dataxLogPath/$dataxLog
            echo 1
            exit 1
        fi 
    else
        if [[ "$RHversion" -ge 310 ]];then 
            OSVersion="centos7"
        else
            echo "Current Rehat Version will not support." | tee -a $dataxLogPath/$dataxLog
            echo 1
            exit 1
        fi 
    fi
}

###Get firewalld stopped or running
checkFirewalld(){
    if [[ $OSVersion == "redhat7" || $OSVersion == "centos7" ]];then
        systemctl status firewalld | grep -i running > /dev/null
        if [[ $? == 0 ]];then
            systemctl stop firewalld
        else
            echo "Firewalld is stopped,Success" | tee -a $dataxLogPath/$dataxLog
        fi
    fi
}

###Get firewalld enable or disabled
checkFirewalldisEnabled(){
    systemctl list-unit-files | grep firewalld | grep disabled > /dev/null
    if [[ $? == 0 ]];then
        echo "check firewalld disabled.check success." | tee -a $dataxLogPath/$dataxLog
    else
        systemctl disable firewalld
    fi
}

###Get SeLinux enforcing or not
checkSeLinux(){
    cat /etc/selinux/config | grep -w "SELINUX=enforcing" > /dev/null
    if [[ $? == 0 ]];then
        sed -i s#SELINUX=enforcing#SELINUX=disabled# /etc/selinux/config
        setenforce 0
    else
        echo "Current SeLinux is stopped,Success." | tee -a $dataxLogPath/$dataxLog
    fi
}

checkPythonVersion(){
    which python > /dev/null
    if [[ $? == 0 ]];then
        pythonVersion=`python -V 2>&1|awk '{print $2}'`
        if [[ $pythonVersion =~ 2.7 ]];then
            echo "Current Python Version is $pythonVersion,check success." | tee -a $dataxLogPath/$dataxLog
        else
            echo "Current Python Version is $pythonVersion,check failed." | tee -a $dataxLogPath/$dataxLog
            exit 1
        fi
    else
        echo "Current OS does not hava python." | tee -a $dataxLogPath/$dataxLog
    fi
}

checkJavaVersion(){
    which java > /dev/null
    if [[ $? == 0 ]];then
        javaVersion=`echo $(java -version 2>&1 |awk 'NR==1{gsub(/"/,"");print $3}')`
        if [[ "$javaVersion" > "1.8" ]];then
            echo "Current java version is $javaVersion,check success." | tee -a $dataxLogPath/$dataxLog
        else
            echo "Current java version is $javaVersion,check failed." | tee -a $dataxLogPath/$dataxLog
            exit 1
        fi
    else
        echo "Current OS does not have java."
    fi
}

checkIpValid(){
    ping -c 2 ${downLoadIp} >/dev/null
    if [[ $? == 0 ]];then
        echo "ping ${downLoadIp} success." | tee -a $dataxLogPath/$dataxLog
    else
        echo "ping ${downLoadIp} failed." | tee -a $dataxLogPath/$dataxLog
        exit 1
    fi
}

installDatax(){
###确保/datax目录被单独挂载。
    df -h | grep /datax > /dev/null
    if [[ $? == 0 ]];then
        wget ${downLoadIp}/software/datax.tar.gz -P /tmp
        if [[ $? == 0 ]];then
            tar xvf /tmp/datax.tar.gz -C / > /dev/null
        else
            echo "wget datax.tar.gz failed." | tee -a $dataxLogPath/$dataxLog
        fi
    else
        echo "Does not hava /datax" | tee -a $dataxLogPath/$dataxLog    
    fi

}

installMaven(){
    wget ${downLoadIp}/software/apache-maven-3.3.9-bin.tar.gz -P /tmp
    if [[ $? == 0 ]];then
        tar xvf /tmp/apache-maven-3.3.9-bin.tar.gz -C /datax > /dev/null
    else
        echo "wget apache-maven-3.3.9-bin.tar.gz failed." | tee -a $dataxLogPath/$dataxLog
    fi
}

getJarPackages(){
    wget ${downLoadIp}/software/ojdbc8.jar -P /datax/plugin/reader/oraclereader/libs
    wget ${downLoadIp}/software/ojdbc8.jar -P /datax/plugin/writer/oraclewriter/libs
}

createDataxUser(){
    id $dataxUser > /dev/null
    if [[ $? == 0 ]];then
        echo "user $dataxUser is already exists." | tee -a $dataxLogPath/$dataxLog
    else
        /usr/sbin/useradd ${dataxUser}
    echo "$dataxUserPassword" | passwd --stdin $dataxUser
    fi
}

setProfile(){
    cat /home/${dataxUser}/.bash_profile | grep -w 'dataxHome=/datax/bin;export dataxHome'
    if [[ $? == 0 ]];then
        echo "Check dataxHome success." | tee -a $dataxLogPath/$dataxLog
    else
        echo 'dataxHome=/datax/bin;export dataxHome' >> /home/${dataxUser}/.bash_profile
    fi

    cat /home/${dataxUser}/.bash_profile | grep -w 'mavenHome=/datax/apache-maven-3.3.9/bin;export mavenHome'
    if [[ $? == 0 ]];then
        echo "Check mavenHome success." | tee -a $dataxLogPath/$dataxLog
    else
        echo 'mavenHome=/datax/apache-maven-3.3.9/bin;export mavenHome' >> /home/${dataxUser}/.bash_profile
    fi

    su - ${dataxUser} -c "source /home/$dataxUser/.bash_profile"
}

chownDataxPath(){
    chown -R ${dataxUser}:${dataxUser} /datax
}


main(){
    mkdirLogPath
    getOsArch
    getOsCentosOrRedhat
    getOsVerion
    checkFirewalld
    checkFirewalldisEnabled
    checkSeLinux
    checkPythonVersion
    checkJavaVersion
    checkIpValid
    installDatax
    installMaven
    getJarPackages
    createDataxUser
    setProfile
    chownDataxPath
}


main

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DATAX