SEATA distributed transaction

官方地址

http://seata.io/zh-cn/index.html

参考官网即可

使用

1

Each micro service need to create a UNDO_LOG 表
SEATA AT 模式需要 UNDO_LOG 表

-- 注意此处0.3.0+ 增加唯一索引 ux_undo_log
CREATE TABLE `undo_log` (
  `id` bigint(20) NOT NULL AUTO_INCREMENT,
  `branch_id` bigint(20) NOT NULL,
  `xid` varchar(100) NOT NULL,
  `context` varchar(128) NOT NULL,
  `rollback_info` longblob NOT NULL,
  `log_status` int(11) NOT NULL,
  `log_created` datetime NOT NULL,
  `log_modified` datetime NOT NULL,
  `ext` varchar(100) DEFAULT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `ux_undo_log` (`xid`,`branch_id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

2

下载seata服务器
从 https://github.com/seata/seata/releases,下载服务器软件包,将其解压缩.

3

导入依赖

 <dependency>
     <groupId>com.alibaba.cloud</groupId>
     <artifactId>spring-cloud-starter-alibaba-seata</artifactId>
 </dependency>

4

registry.conf 注册中心配置文件
file.conf Seata配置

nacos中的seataName is registeredserveraddr

5

Each service USESseata 代理数据源

package com.jhj.gulimall.product.config;

import com.zaxxer.hikari.HikariDataSource;
import io.seata.rm.datasource.DataSourceProxy;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.jdbc.DataSourceProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.util.StringUtils;

import javax.sql.DataSource;

@Configuration
public class MySeataConfig {
    
    @Autowired
    DataSourceProperties dataSourceProperties;

    @Bean
    public DataSource dataSource(DataSourceProperties dataSourceProperties){
    
        HikariDataSource build = dataSourceProperties.initializeDataSourceBuilder().type(HikariDataSource.class).build();
        if (StringUtils.hasText(dataSourceProperties.getName())){
    
            build.setPoolName(dataSourceProperties.getName());
        }
        return new DataSourceProxy(build);
    }
}

6

Each service will be file.conf register.conf放到resource下
修改每一个file.conf的service.vgroup_mapping 修改为service.vgroup_mapping.${spring.application.name}-fescar-service-group
A direct way to modifyfile.conf
方式二 配置yml

spring:
  cloud:
    alibaba:
      seata:
        tx-service-group: ${
    spring.application.name}

启动测试

I want to be distributed over a large transaction entry method combined with @GlobalTransactional The remote call small affairs @Transactional

作者声明

如有问题,欢迎指正！