seata1.3.0分布式事务(整合nacos+mysql)

seata1.3.0分布式事务(整合nacos+mysql）

​ 我采用了docker部署seata、nacos及mysql，这里单单提seata服务端的部署。我用的一台1G2核的Ucloud云服务器，三年仅仅210，这里简单用一下at模式。会持续更新。

一、环境搭建

扯远了，先说一个所需要的组件的版本。

名称	版本
seata	1.3.0
alibaba-cloud	2.2.1.RELEASE
nacos	1.3.1
mysql	8

1.seata服务端安装（docker方式）

docker pull seataio/seata-server

1.1创建配置文件registry.conf

vim registry.conf

内容如下

registry {
  type = "nacos"

  nacos {
    application = "seata-server"
    serverAddr = "127.0.0.1:8848"
    #注意registry和config需要在同一个组下
    group = "SEATA_GROUP"
    namespace = ""
    # 需要和nacos配置中事务组配置保持一致
    cluster = "default"
    username = ""
    password = ""
  }
}

config {
  type = "nacos"

  nacos {
    serverAddr = "127.0.0.1:8848"
    namespace = ""
    #注意registry和config需要在同一个组下
    group = "SEATA_GROUP"
    username = ""
    password = ""
  }
}

1.2创建推送配置文件

vim config.txt

文件内容如下

#my_test_tx_group需要与客户端保持一致  default需要跟客户端和registry.conf中registry中的cluster保持一致
service.vgroupMapping.my_test_tx_group=default
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=root
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

1.3拉取或创建推送脚本

mkdir sh
cd sh
vim  nacos-config.sh

官网有，你可以直接复制我这个

#!/usr/bin/env bash
# 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 [-h host] [-p port] [-g group] [-t tenant] [-u username] [-w password] "
    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"

failCount=0
tempLog=$(mktemp -u)
function addConfig() {
  curl -X POST -H "${contentType}" "http://$nacosAddr/nacos/v1/cs/configs?dataId=$1&group=$group&content=$2&tenant=$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 successfully "
  else
    echo "Set $1=$2 failure "
    (( failCount++ ))
  fi
}

count=0
for line in $(cat $(dirname "$PWD")/config.txt | sed s/[[:space:]]//g); do
  (( count++ ))
	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

1.4执行推送脚本

cd ..
bash nacos-config.sh -h 127.0.0.1

1.5创建容器

docker run -d --name seata-server \
        --restart always \
        -p 8091:8091 \
        -e SEATA_IP=127.0.0.1 \
        -e SEATA_CONFIG_NAME=file:/root/seata-config/registry \
        -v /conf/seata:/root/seata-config  \
        seataio/seata-server

-v /conf/seata就是存放registry.conf的路径

二、项目工程配置

1.pom.xml

        
        <dependency>
            <groupId>com.alibaba.cloudgroupId>
            <artifactId>spring-cloud-starter-alibaba-seataartifactId>
            <exclusions>
                <exclusion>
                    <groupId>io.seatagroupId>
                    <artifactId>seata-spring-boot-starterartifactId>
                exclusion>
            exclusions>
        dependency>
        <dependency>
            <groupId>io.seatagroupId>
            <artifactId>seata-spring-boot-starterartifactId>
            <version>1.3.0version>
        dependency>

2.yml

seata:
  application-id: ${spring.application.name}
  #需要和nacos中配置保持一致
  tx-service-group: my_test_tx_group
  config:
    type: nacos
    nacos:
      #需要和server在同一个注册中心下
      serverAddr: 127.0.0.1:8848
      #需要server端(registry和config)、nacos配置client端(registry和config)保持一致
      group: SEATA_GROUP
  registry:
    type: nacos
    nacos:
      #需要和server端保持一致，即server在nacos中的名称，默认为seata-server
      application: seata-server
      serverAddr: 127.0.0.1:8848
      #需要server端(registry和config)、nacos配置client端(registry和config)保持一致
      group: SEATA_GROUP

3.数据源配置

package com.lxm.order.configuration;

import com.alibaba.druid.pool.DruidDataSource;
import io.seata.rm.datasource.DataSourceProxy;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.transaction.SpringManagedTransactionFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;

import javax.sql.DataSource;

/**
 * 功能描述: seata需要注入的数据源配置
 *
 * @author luxiaomeng
 * @date 2020/10/12   20:37
 * 修改日志: 暂无
 */
@Configuration
public class DataSourceProxyConfig {

    // mybatis的mapper文件夹地址
    @Value("${mybatis.mapper-locations}")
    private String mapperLocations;

    @Bean
    @ConfigurationProperties(prefix = "spring.datasource")
    public DataSource dataSource() {
        return new DruidDataSource();
    }

    @Bean
    public DataSourceProxy dataSourceProxy(DataSource dataSource) {
        return new DataSourceProxy(dataSource);
    }

    @Bean
    public SqlSessionFactory sqlSessionFactoryBean(DataSourceProxy dataSourceProxy) throws Exception {
        SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
        sqlSessionFactoryBean.setDataSource(dataSourceProxy);
        sqlSessionFactoryBean.setMapperLocations(new PathMatchingResourcePatternResolver()
                .getResources("classpath*:/mapper/*.xml"));
        sqlSessionFactoryBean.setTransactionFactory(new SpringManagedTransactionFactory());
        return sqlSessionFactoryBean.getObject();
    }
}

三、使用

1.at模式

直接在调用方服务添加注解

@GlobalTransactional