#!/bin/bash

set -o errexit

download(){
  # wget安装
  if [[ ! `which wget` ]]; then
    if check_sys sysRelease ubuntu;then
        apt-get install -y wget
    elif check_sys sysRelease centos;then
        yum install -y wget
    fi 
  fi

  local url1=$1
  local url2=$2
  local filename=$3
  
  speed1=`curl -m 5 -L -s -w '%{speed_download}' "$url1" -o /dev/null || true`
  speed1=${speed1%%.*}
  speed2=`curl -m 5 -L -s -w '%{speed_download}' "$url2" -o /dev/null || true`
  speed2=${speed2%%.*}
  echo "speed1:"$speed1
  echo "speed2:"$speed2
  url=$url1
  if [[ $speed2 -gt $speed1 ]]; then
    url=$url2
  fi
  echo "using url:"$url
  wget "$url" -O $filename

}

#判断系统版本
check_sys(){
    local checkType=$1
    local value=$2

    local release=''
    local systemPackage=''
    local packageSupport=''

    if [[ "$release" == "" ]] || [[ "$systemPackage" == "" ]] || [[ "$packageSupport" == "" ]];then

        if [[ -f /etc/redhat-release ]];then
            release="centos"
            systemPackage="yum"
            packageSupport=true

        elif cat /etc/issue | grep -q -E -i "debian";then
            release="debian"
            systemPackage="apt"
            packageSupport=true

        elif cat /etc/issue | grep -q -E -i "ubuntu";then
            release="ubuntu"
            systemPackage="apt"
            packageSupport=true

        elif cat /etc/issue | grep -q -E -i "centos|red hat|redhat";then
            release="centos"
            systemPackage="yum"
            packageSupport=true

        elif cat /proc/version | grep -q -E -i "debian";then
            release="debian"
            systemPackage="apt"
            packageSupport=true

        elif cat /proc/version | grep -q -E -i "ubuntu";then
            release="ubuntu"
            systemPackage="apt"
            packageSupport=true

        elif cat /proc/version | grep -q -E -i "centos|red hat|redhat";then
            release="centos"
            systemPackage="yum"
            packageSupport=true

        else
            release="other"
            systemPackage="other"
            packageSupport=false
        fi
    fi

    echo -e "release=$release\nsystemPackage=$systemPackage\npackageSupport=$packageSupport\n" > /tmp/ezhttp_sys_check_result

    if [[ $checkType == "sysRelease" ]]; then
        if [ "$value" == "$release" ];then
            return 0
        else
            return 1
        fi

    elif [[ $checkType == "packageManager" ]]; then
        if [ "$value" == "$systemPackage" ];then
            return 0
        else
            return 1
        fi

    elif [[ $checkType == "packageSupport" ]]; then
        if $packageSupport;then
            return 0
        else
            return 1
        fi
    fi
}

get_sys_ver() {
cat > /tmp/sys_ver.py <<EOF
import platform
import re

sys_ver = platform.platform()
sys_ver = re.sub(r'.*-with-(.*)-.*',"\g<1>",sys_ver)
if sys_ver.startswith("centos-7"):
    sys_ver = "centos-7"
if sys_ver.startswith("centos-6"):
    sys_ver = "centos-6"
print sys_ver
EOF
echo `python /tmp/sys_ver.py`
}

force_restart() {
    killall nginx || true
    sleep 2
    ps aux | grep [n]ginx | awk '{print $2}' | xargs kill -9 || true
    sleep 2
    rm -f /var/run/nginx.sock
    /usr/local/openresty//nginx/sbin/nginx    
}

upgrade_cmd() {
echo ""
        
}

# 定义版本
version_name="v4.3.2"
version_num="40302"
dir_name="cdnfly-agent-$version_name"
tar_gz_name="$dir_name-$(get_sys_ver).tar.gz"

# 下载安装包
cd /opt
echo "开始下载$tar_gz_name..."
download "http://dl2.cdnfly.cn/cdnfly/$tar_gz_name" "http://us.centos.bz/cdnfly/$tar_gz_name" "$tar_gz_name"
echo "下载完成"

echo "开始解压..."
rm -rf $dir_name
tar xf $tar_gz_name
echo "解压完成"

echo "复制config.py td-agent.conf配置文件到新版本目录..."
\cp  cdnfly/agent/conf/config.py $dir_name/agent/conf/config.py
sed -i "s/VERSION_NAME.*/VERSION_NAME=\"$version_name\"/" $dir_name/agent/conf/config.py
sed -i "s/VERSION_NUM.*/VERSION_NUM=\"$version_num\"/" $dir_name/agent/conf/config.py

\cp  cdnfly/agent/conf/filebeat.yml $dir_name/agent/conf/filebeat.yml
echo "复制完成"

###########
echo "执行升级命令..."
upgrade_cmd
echo "执行升级命令完成"
###########

echo "软链接到新版本"
cd /opt
rm -f cdnfly
ln -s $dir_name cdnfly
echo "链接完成"

echo "开始重启agent..."

# supervisorctl reload
supervisorctl restart agent
supervisorctl restart task
#supervisorctl restart filebeat
#/usr/local/openresty/nginx/sbin/nginx -s reload
# 重启nginx

# killall nginx || true
# sleep 2
# ps aux | grep [n]ginx | awk '{print $2}' | xargs kill -9 || true
# /usr/local/openresty//nginx/sbin/nginx

echo "重启完成"
echo "完成$version_name版本升级"



