Tx-LCN框架实现分布式事务

TX-LCN官网: http://www.txlcn.org/zh-cn/docs/start.html

官网中有源码以及demo的git地址,同时也给了清晰的文档说明,有需要去官网获取就可以了.

本文只结合自己springcloud项目+lcn框架实现分布式事务

1.TM的配置

pom.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    
    <groupId>com.lcn</groupId>
    <artifactId>txlcn-tm</artifactId>
    <version>1.0</version>
    <name>txlcn-tm</name>

    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-context</artifactId>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>

        <dependency>
            <groupId>com.codingapi.txlcn</groupId>
            <artifactId>txlcn-tm</artifactId>
            <version>5.0.2.RELEASE</version>
        </dependency>

    </dependencies>

    <!-- 添加spring-boot的maven插件 -->
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

application.yml

spring:
  application:
    name: txlcn-tm
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://localhost:3306/demo?nullCatalogMeansCurrent=true&autoReconnect=true&useUnicode=true&characterEncoding=utf-8&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC&useSSL=false
    username: root
    password: root

  redis:
    host: localhost
    port: 6379


server:
  port: 7970
tx-lcn:
  manager:
    host: 127.0.0.1

启动类:

@SpringBootApplication
@ComponentScan(basePackages = {"com.*"})
@EnableTransactionManagerServer
public class TxlcnTmApplication {
    public static void main(String[] args) {
        SpringApplication.run(TxlcnTmApplication.class, args);
    }

}

启动tm服务,输入网址: localhost:7970,登录TxManager的系统平台

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2.TC配置

需要分布式事务控制的服务,使其成为一个TxClient客户端

pom.xml

//引入jar包依赖
<dependency>
    <groupId>com.codingapi.txlcn</groupId>
    <artifactId>txlcn-tc</artifactId>
</dependency>

<dependency>
    <groupId>com.codingapi.txlcn</groupId>
    <artifactId>txlcn-txmsg-netty</artifactId>
</dependency>

application.xml

//在配置文件中指定8070端口,8070是tm默认开启的和tc通信的端口
tx-lcn:
  client:
    manager-address: localhost:8070

启动类: 注解@EnableDistributedTransaction

@SpringBootApplication
@ComponentScan(basePackages = {"com.*"})
@EnableEurekaClient
@EnableFeignClients
@EnableDistributedTransaction
public class TxdemoServerApplication {
    public static void main(String[] args) {
        SpringApplication.run(TxdemoServerApplication.class, args);
    }
}

@LcnTransaction注解控制分布式事务

@LcnTransaction
public void demoA(){
    demoB.add(user);
    throw new RuntimeException();
    demoC.deleteById(id);
}

public class demoB{

@LcnTransaction

public void add(User user){

demoBMapper.insert(user);

}

}

public class demoC{

@LcnTransaction

public void deleteById(Long id){

demoCMapper.deleteById(id);

}

}

注意:(1)lcn框架会创建一个事务组,在执行完之前不会提交事务,最后根据结果进行提交或者回滚,但是即使回滚数据库中也会占用id

(2)如果同时加入了@Transactional开启本地事务,需要配置好优先级顺序,否则会被本地事务提交,测试不加本地事务是ok的,本地也会被lcn管理

---同事做的,主要是为了自己记忆

Tx-LCN框架实现分布式事务

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