摘要：本文主要介紹通過腳本完成線上發版，自動打發版，方便線上功能回退。結合參數化構建，可以實現自動化發布。

本文主要介紹通過shell腳本完成線上發版，自動打發版tag，方便線上功能回退。結合Jenkins參數化構建，可以實現自動化發布。

## 分支名
tag_name="dev"
IN_TAG=$tag_name
## git地址
GIT_DIR="git@github.com:****/paas-service-web.git"
## 項目名
GIT_PROJ_NAME=$(echo $GIT_DIR|awk -F/ "$0=$NF"|awk -F. "$0=$1")
## 工作目錄
WORKSPACE="/home/darren/data"
## 發版用戶
BUILD_USER="xiaozq"
## 線上服務器地址
HOST="192.144.172.239"
## 服務器部署目錄
DEPLOY_DIR="/data/xiaoyaospace"

這些參數需要改成自己對應的參數，需要配置ssh免密鑰登錄

執行方式 sh -x paas_jenkins.sh 分支名

依賴環境

maven

git

jdk

流程圖

源碼
paas_jenkins.sh (接收的是jenkins傳過來的參數，可以改成指定參數，直接運行)

#!/bin/bash
export LANG="en_US.UTF-8"  
#export PS4="[+] $(date +%H:%M:%S) info (@$LINENO): "

## 分支名
#tag_name=$1
IN_TAG=$tag_name
## git地址
GIT_DIR=$git
## 項目名
GIT_PROJ_NAME=$(echo $GIT_DIR|awk -F/ "$0=$NF"|awk -F. "$0=$1")
## 工作目錄
#WORKSPACE="/home/darren/data"
## 發版
BUILD_USER=$BUILD_USER_ID
## 線上服務器地址
HOST=$server_list
## 服務器部署目錄
DEPLOY_DIR=$deploy_dir
## 使用端口號
SERVER_PORT=$server_port
## 檢測項目啟動地址
HEALTH_CHECK_FILE=$health_check_file
echo "接收參數--》build_type:$build_type ; tag_name:$tag_name ;git:$git ;server_list:$server_list ;deploy_dir:$deploy_dir ; server_port:$server_port;health_check_file:$health_check_file; BUILD_USER_ID:$BUILD_USER_ID "

#切換到工作目錄
cd $WORKSPACE
test ! -d "$WORKSPACE/$GIT_PROJ_NAME" && echo "git clone $GIT_DIR" && git clone $GIT_DIR

#進入項目目錄
pushd $GIT_PROJ_NAME >/dev/null

echo $IN_TAG|egrep -q "^d-|^b-|^r-"

if [ $? -ne 0 ];then
    
    git fetch origin
    if [ $? -ne 0 ];then
                echo "無法連接gitlab！"
                exit 1;
        fi

    git rev-list origin/$IN_TAG >/dev/null

    if [ $? -ne 0 ];then
        echo "$tag_name 分支不存在！"
        exit 1;
    fi

    echo "檢查代碼是否合并..."
    
    diff=$(git log origin/master ^origin/$IN_TAG| wc -l) 
    if [ $diff -ne 0 ];then
        echo "請先合并master代碼到分支$IN_TAG!"
        exit 1;
    fi

    echo "代碼已經合并! "

    git pull
    git fetch --tags

    git checkout $IN_TAG
    if [ $? -ne 0 ];then
        exit 1;
    fi

    git pull

    git checkout master
    if [ $? -ne 0 ];then
                exit 1;
        fi
    git reset --hard origin/master  
    if [ $? -ne 0 ];then
                exit 1;
        fi
##    git status

    git merge $IN_TAG   
    if [ $? -ne 0 ];then
        echo "合并到master失敗！"
        exit 1
    fi
#    git status

    timestamp=$(date +%y%m%d%H%M)
    IN_TAG=r-$timestamp-$BUILD_USER
        git fetch --tags
        num=$(git tag -l $IN_TAG|wc -l)
        if [ $num -eq 1 ];then
                echo "Tag沖突，一分鐘后重新打Tag"
                sleep 60
                timestamp=$(date +%y%m%d%H%M)
                IN_TAG=r-$timestamp-$BUILD_USER
        fi
    git tag -a -m "$tag_name" $IN_TAG master

    git push origin master
    if [ $? -ne 0 ];then
        echo "推送代碼到origin失敗"
        exit 1
    fi
        
    git push origin --tags
    if [ $? -ne 0 ];then
        echo "推送rtag到origin失敗"
        exit 1
    fi
fi

git fetch --tags
git reset --hard $IN_TAG 
if [ $? -ne 0 ];then
    echo "$IN_TAG 分支不存在！"
    exit 1 
fi

merge_count=$(find . -regex ".*.js|.*.html|.*.htm|.*.css|.*.xml|.*.jsp|.*.properties" |xargs grep "<<<<<<< HEAD" 2>/dev/null |wc -l)
if [ $merge_count -ne 0 ]; then
    find . -regex ".*.js|.*.html|.*.htm|.*.css|.*.xml|.*.jsp|.*.properties" |xargs grep "<<<<<<< HEAD" 2>/dev/null
    echo "請解決代碼沖突后再發布！"
    exit 1
fi

echo "mvn clean package -DskipTests=true"
mvn clean package -DskipTests=true 
if [ $? -ne 0 ];then
    exit 1 
fi

popd

JAR_NAME=$(ls -al "$WORKSPACE/$GIT_PROJ_NAME/target" | grep "jar$" | awk "{print $9}")
echo "$JAR_NAME"

ssh root@$HOST "test -d $DEPLOY_DIR/$GIT_PROJ_NAME || mkdir -p $DEPLOY_DIR/$GIT_PROJ_NAME"

if [ $? -ne 0 ];then
    echo "遠程執行命令失敗！"
    exit 1
    #continue 
fi


echo "scp -p "$WORKSPACE/$GIT_PROJ_NAME/target/$JAR_NAME"  root@$HOST:/tmp/ "
scp -p "$WORKSPACE/$GIT_PROJ_NAME/target/$JAR_NAME"  root@$HOST:/tmp/

if [ $? -ne 0 ];then 
     echo "同步文件失敗！" 
     exit 1 
     #continue  
fi 

echo "ssh root@$HOST "rm -f $DEPLOY_DIR/$GIT_PROJ_NAME/$JAR_NAME && cp -rf /tmp/$JAR_NAME $DEPLOY_DIR/$GIT_PROJ_NAME/" "
ssh root@$HOST "rm -f $DEPLOY_DIR/$GIT_PROJ_NAME/$JAR_NAME && cp -rf /tmp/$JAR_NAME $DEPLOY_DIR/$GIT_PROJ_NAME/"

echo "ssh root@$HOST "sh $DEPLOY_DIR/$GIT_PROJ_NAME/start.sh $JAR_NAME $SERVER_PORT $HEALTH_CHECK_FILE $DEPLOY_DIR" || exit 1 "
ssh root@$HOST "sh $DEPLOY_DIR/$GIT_PROJ_NAME/start.sh $JAR_NAME $SERVER_PORT $HEALTH_CHECK_FILE $DEPLOY_DIR" || exit 1

echo "ssh root@$HOST "echo $IN_TAG > $DEPLOY_DIR/$GIT_PROJ_NAME/git_version""
ssh root@$HOST "echo $IN_TAG > $DEPLOY_DIR/$GIT_PROJ_NAME/git_version"

echo "[DESC]IN=$tag_name
OUT=$IN_TAG"

start.sh (放在部署的服務器上，遠程調用)

#!/bin/sh

echo "接收到的參數 $#"

PROJ_NAME=$1
SERVER_PORT=$2
HEALTH_CHECK_FILE=$3
DEPLOY_DIR=$4
HEALTCHECKURL="http://127.0.0.1:$SERVER_PORT/$HEALTH_CHECK_FILE"

#ps -ef | grep "$PROJ_NAME" |grep -v grep
ps -ef | grep "$PROJ_NAME" |grep -v grep|grep -v "start.sh" |awk "NR==1{print $2}"|xargs kill -9 >/dev/null 2>&1

java -server -Xmx256m -jar -Dspring.profiles.active=prod "$DEPLOY_DIR/$PROJ_NAME" >/tmp/paas.log &

flag=0
for i in $(seq 30);do
    sleep 1
    httpcode=$(curl -o /dev/null -s -m 1 --connect-timeout 1 -w %{http_code}  "$HEALTCHECKURL")
    echo "Http check $HEALTCHECKURL httpcode is $httpcode"
    if [ "X$httpcode" == "X200" ];then
        echo -e "
Start $PROJ_NAME is OK .
"
                flag=1
        break
    fi
done
if [ $flag -eq 0 ];then
    echo -e "
Start $PROJ_NAME is FAIL .
"
    exit 1
fi