#!bin/bash

# 初始化变量
echo "开始部署..."

SERVICE_NAME=${1}
echo "服务名：${SERVICE_NAME}"

SERVICE_PORT=${2}
echo "服务端口：${SERVICE_PORT}"

BUILD_TAG=${3}
echo "构建标签为：${BUILD_TAG}"

ENVIROMENT=${4}
echo "当前环境为：${ENVIROMENT}"

# 基础路径
BASE_PATH=/opt/application

APPLICATION_PATH=${BASE_PATH}/${SERVICE_NAME}

source /etc/profile

cd ${APPLICATION_PATH}

# 重命名当前jar包
APP_NAME="${SERVICE_NAME}_${BUILD_TAG}"
mv ${SERVICE_NAME}.jar ${APP_NAME}.jar
echo "新jar包名字为：${APP_NAME}.jar"


# 初始化history-builds文件夹
if [ "`ls . | grep history-builds`" == "" ]; then
	mkdir history-builds
fi

# 将上一版本jar包放到history-builds中
PREVIOUS_BUILD_JAR=`ls . | grep -v ${APP_NAME}.jar | grep .jar`
if [ "${PREVIOUS_BUILD_JAR}" != "" ]; then
    temp=${PREVIOUS_BUILD_JAR#*_}
    
    PREVIOUS_BUILD=${temp%.jar*}
    echo "上一构建为：${PREVIOUS_BUILD}"
    
    mv ${PREVIOUS_BUILD_JAR} history-builds/
    
    
fi


# 初始化history-logs文件夹
if [ "`ls . | grep history-logs`" == "" ]; then
	mkdir history-logs
fi

# 将上一版本日志放到history-logs中
PREVIOUS_BUILD_LOG=`ls logs/ | grep -v ${APP_NAME}.log`
if [[ "${PREVIOUS_BUILD_LOG}" != "" && ${PREVIOUS_BUILD} != "" ]]; then
    mv logs history-logs/${PREVIOUS_BUILD}
    mkdir logs
fi


# 杀死进程, 存在误杀的可能性
# 根据端口获取pid，如果pid不为空，则停止运行
PID=`netstat -nlp | grep -w ${SERVICE_PORT} | sed -r 's#.* (.*)/.*#\1#'`

if [ "${PID}" != "" ]; then

   echo "检测到端口${SERVICE_PORT} 被 PID：${PID}占用，开始尝试结束进程......"
   
   KILL_COUNT=1
   
   while [ "${PID}" != "" ]
   do
        echo "第${KILL_COUNT}次尝试结束${PID}进程......"
        if [ ${KILL_COUNT} -lt 3 ];then

            kill ${PID}
          
        else

            kill -9 ${PID}

        fi

        ((KILL_COUNT++))
        
        sleep 5
        
        PID=`netstat -nlp | grep -w ${SERVICE_PORT} | sed -r 's#.* (.*)/.*#\1#'`
      
   done     
          
   echo "----旧版本${SERVICE_NAME}服务应用已成功停止运行------"
   
else

   echo "------没有检测到${SERVICE_NAME}服务应用------"
   
fi



echo "正在启动${SERVICE_NAME}服务应用......"
echo "正在运行${APP_NAME}.jar ......"

# 运行服务的命令
excute="java -jar -Xms256m -Xmx1024m ${APP_NAME}.jar  --spring.profiles.active=${ENVIROMENT}"

echo "${excute}"

nohup ${excute} >> logs/${APP_NAME}.log 2>&1 &

sleep 20

cat logs/${APP_NAME}.log

NEW_PID=`netstat -nlp | grep -w ${SERVICE_PORT} | sed -r 's#.* (.*)/.*#\1#'`

echo "------------------"

if [ "${NEW_PID}" != "" ]; then

   echo ${NEW_PID} > pid.txt
   
   ps aux | sort -rnk 4 | grep 'java -jar'
    
   echo "------------------"

   echo "${SERVICE_NAME}服务应用发布成功，当前构建为：${BUILD_TAG}, 使用的配置环境为：${ENVIROMENT}"

   exit 0
else

  echo "${SERVICE_NAME}服务启动失败，请检查是否按规范进行服务应用的发布"

  exit 500
fi