Seata 与 Nacos Config配置中心整合

前言：之前我们只将nacos注册中心和seata进行了整合，如果需要实现完整的功能还需要与nacos的配置中心进行整合。

文章目录

一、配置管理

1. 创建文件config.txt
2. 创建nacos-config.sh
3. 配置导入nacos配置中心
4. 配置验证

一、配置管理

1. 创建文件config.txt

在seata的安装文件夹下创建文件config.txt

[root@localhost ~]# cd /app/seata/
[root@localhost seata]# vim config.txt

添加一下内容：

# 这里order-service值得是订单模块的服务
service.vgroupMapping.order-service=default
# 下面是数据库信息根据自己的实际情况配置
store.mode=db
store.db.datasource=druid
store.db.dbType=mysql
store.db.driverClassName=com.mysql.cj.jdbc.Driver
store.db.url=jdbc:mysql://127.0.0.1/:3306/seata?useUnicode=true
store.db.user=root
store.db.password=123456
store.db.minConn=5
store.db.maxConn=30
store.db.globalTable=global_table
store.db.branchTable=branch_table
store.db.queryLimit=100
store.db.lockTable=lock_table
store.db.maxWait=5000

上面的文件是精简后的部分，完整文件可在github中找到

https://github.com/seata/seata/blob/develop/script/config-center/config.txt

2. 创建nacos-config.sh

在conf/文件夹下下载文件https://github.com/seata/seata/blob/develop/script/config-center/nacos/nacos-config.sh 用于将上面的seata配置信息导入到nacos 执行下面的命令

[root@localhost seata]# cd conf/
[root@localhost conf]# vim nacos-config.sh

#!/bin/sh
# Copyright 1999-2019 Seata.io Group.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at、
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

while getopts ":h:p:g:t:u:w:" opt
do
  case $opt in
  h)
    host=$OPTARG
    ;;
  p)
    port=$OPTARG
    ;;
  g)
    group=$OPTARG
    ;;
  t)
    tenant=$OPTARG
    ;;
  u)
    username=$OPTARG
    ;;
  w)
    password=$OPTARG
    ;;
  ?)
    echo " USAGE OPTION: $0
    exit 1
    ;;
  esac
done

if [ -z ${host} ]; then
    host=localhost
fi
if [ -z ${port} ]; then
    port=8848
fi
if [ -z ${group} ]; then
    group="SEATA_GROUP"
fi
if [ -z ${tenant} ]; then
    tenant=""
fi
if [ -z ${username} ]; then
    username=""
fi
if [ -z ${password} ]; then
    password=""
fi

nacosAddr=$host:$port
contentType="content-type:application/json;charset=UTF-8"

echo "set nacosAddr=$nacosAddr"
echo "set group=$group"

urlencode() {
  length="${#1}"
  i=0
  while [ $length -gt $i ]; do
    char="${1:$i:1}"
    case $char in
    [a-zA-Z0-9.~_-]) printf $char ;;
    *) printf '%%%02X' "'$char" ;;
    esac
    i=`expr $i + 1`
  done
}

failCount=0
tempLog=$(mktemp -u)
function addConfig() {
  dataId=`urlencode $1`
  content=`urlencode $2`
  curl -X POST -H "${contentType}" "http://$nacosAddr/nacos/v1/cs/configs?dataId=$dataId&group=$group&content=$content&tenant=$tenant&username=$username&password=$password" >"${tempLog}" 2>/dev/null
  if [ -z $(cat "${tempLog}") ]; then
    echo " Please check the cluster status. "
    exit 1
  fi
  if [ "$(cat "${tempLog}")" == "true" ]; then
    echo "Set $1=$2
  else
    echo "Set $1=$2
    failCount=`expr $failCount + 1`
  fi
}

count=0
for line in $(cat $(dirname "$PWD")/config.txt | sed s/[[:space:]]//g); do
    count=`expr $count + 1`
  key=${line%%=*}
    value=${line#*=}
  addConfig "${key}" "${value}"
done

echo "========================================================================="
echo " Complete initialization parameters,  total-count:$count ,  failure-count:$failCount
echo "========================================================================="

if [ ${failCount} -eq 0 ]; then
  echo " Init nacos config finished, please start seata-server. "
else
  echo " init nacos config fail. "
fi

3. 配置导入nacos配置中心

将seata配置信息导入到nacos config配置中心

[root@localhost conf]# sh nacos-config.sh -h 127.0.0.1

set nacosAddr=127.0.0.1:8848
set group=SEATA_GROUP
Set service.vgroupMapping.order-service=default successfully 
Set store.mode=db successfully 
Set store.db.datasource=druid successfully 
Set store.db.dbType=mysql successfully 
Set store.db.driverClassName=com.mysql.cj.jdbc.Driver successfully 
Set store.db.url=jdbc:mysql://127.0.0.1/:3306/seata?useUnicode=true successfully 
Set store.db.user=root successfully 
Set store.db.password=123456 successfully 
Set store.db.minConn=5 successfully 
Set store.db.maxConn=30 successfully 
Set store.db.globalTable=global_table successfully 
Set store.db.branchTable=branch_table successfully 
Set store.db.queryLimit=100 successfully 
Set store.db.lockTable=lock_table successfully 
Set store.db.maxWait=5000 successfully 
=========================================================================
 Complete initialization parameters,  total-count:15 ,  failure-count:0 
=========================================================================
 Init nacos config finished, please start seata-server. 
[root@localhost conf]#