eureka

啓動eureka

搭建TC

下載 seata-server

http://seata.io/zh-cn/blog/download.html

修改配置。

修改registry.conf

註冊中心 eureka
配置中心 file

registry {
  # file 、nacos 、eureka、redis、zk、consul、etcd3、sofa
  #修改1，註冊到eureka裏
  type = "eureka"

  nacos {
    serverAddr = "localhost"
    namespace = ""
    cluster = "default"
  }
  #修改2
  eureka {
    serviceUrl = "http://localhost:7900/eureka/"
    #application = "default"
	application = "seata-server"
    weight = "1"
  }
  redis {
    serverAddr = "localhost:6379"
    db = "0"
  }
  zk {
    cluster = "default"
    serverAddr = "127.0.0.1:2181"
    session.timeout = 6000
    connect.timeout = 2000
  }
  consul {
    cluster = "default"
    serverAddr = "127.0.0.1:8500"
  }
  etcd3 {
    cluster = "default"
    serverAddr = "http://localhost:2379"
  }
  sofa {
    serverAddr = "127.0.0.1:9603"
    application = "default"
    region = "DEFAULT_ZONE"
    datacenter = "DefaultDataCenter"
    cluster = "default"
    group = "SEATA_GROUP"
    addressWaitTime = "3000"
  }
  file {
    name = "file.conf"
  }
}

# 配置中心
# 如果type = "file"，則從本地file.conf中獲取配置參數
config {
  # file、nacos 、apollo、zk、consul、etcd3
  #修改3
  type = "file"

  nacos {
    serverAddr = "localhost"
    namespace = ""
  }
  consul {
    serverAddr = "127.0.0.1:8500"
  }
  apollo {
    app.id = "seata-server"
    apollo.meta = "http://192.168.1.204:8801"
  }
  zk {
    serverAddr = "127.0.0.1:2181"
    session.timeout = 6000
    connect.timeout = 2000
  }
  etcd3 {
    serverAddr = "http://localhost:2379"
  }
  #修改4
  file {
    name = "file.conf"
  }
}

修改file.conf

服務信息
存儲

注意：jdbc的驅動

開發需要生產的db用戶名和密碼，可以配置到jar包的xml裏，避免敏感信息泄漏

service {
  #transaction service group mapping
  #修改點1：my_tx_group：事務組，值相當於spring.application.name
  #vgroup_mapping.fbs_tx_group = "default"
  vgroup_mapping.my_tx_group = "seata-server"
  #only support when registry.type=file, please don't set multiple addresses
  
  #修改點2
  #default.grouplist = "127.0.0.1:8091"
  seata-server.grouplist = "127.0.0.1:8091"
  #disable seata
  disableGlobalTransaction = false
}

## transaction log store, only used in seata-server
store {
  ## store mode: file、db
  # 修改3
  mode = "db"

  ## file store property
  file {
    ## store location dir
    dir = "sessionStore"
  }

  ## database store property
  #修改4
  db {
    ## the implement of javax.sql.DataSource, such as DruidDataSource(druid)/BasicDataSource(dbcp) etc.
	
    datasource = "druid"
    ## mysql/oracle/h2/oceanbase etc.
    db-type = "mysql"
    # 此處注意驅動名稱，用的新舊版本哪個
    driver-class-name = "com.mysql.cj.jdbc.Driver"
    url = "jdbc:mysql://192.168.1.113:3306/seata-server?useUnicode=true&useSSL=false&characterEncoding=utf8&serverTimezone=Asia/Shanghai"
    user = "root"
    password = "123456"
  }
}

添加seata-server-db

自己建庫，自己建表。

數據庫名和 file.conf中一致。(seata-server)

分支事務表
CREATE TABLE `branch_table` (
  `branch_id` bigint(20) NOT NULL,
  `xid` varchar(128) NOT NULL,
  `transaction_id` bigint(20) DEFAULT NULL,
  `resource_group_id` varchar(32) DEFAULT NULL,
  `resource_id` varchar(256) DEFAULT NULL,
  `branch_type` varchar(8) DEFAULT NULL,
  `status` tinyint(4) DEFAULT NULL,
  `client_id` varchar(64) DEFAULT NULL,
  `application_data` varchar(2000) DEFAULT NULL,
  `gmt_create` datetime(6) DEFAULT NULL,
  `gmt_modified` datetime(6) DEFAULT NULL,
  PRIMARY KEY (`branch_id`),
  KEY `idx_xid` (`xid`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

全局事務表
CREATE TABLE `global_table` (
  `xid` varchar(128) NOT NULL,
  `transaction_id` bigint(20) DEFAULT NULL,
  `status` tinyint(4) NOT NULL,
  `application_id` varchar(32) DEFAULT NULL,
  `transaction_service_group` varchar(32) DEFAULT NULL,
  `transaction_name` varchar(128) DEFAULT NULL,
  `timeout` int(11) DEFAULT NULL,
  `begin_time` bigint(20) DEFAULT NULL,
  `application_data` varchar(2000) DEFAULT NULL,
  `gmt_create` datetime DEFAULT NULL,
  `gmt_modified` datetime DEFAULT NULL,
  PRIMARY KEY (`xid`),
  KEY `idx_gmt_modified_status` (`gmt_modified`,`status`),
  KEY `idx_transaction_id` (`transaction_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;


全局鎖
CREATE TABLE `lock_table` (
  `row_key` varchar(128) NOT NULL,
  `xid` varchar(96) DEFAULT NULL,
  `transaction_id` bigint(20) DEFAULT NULL,
  `branch_id` bigint(20) NOT NULL,
  `resource_id` varchar(256) DEFAULT NULL,
  `table_name` varchar(32) DEFAULT NULL,
  `pk` varchar(36) DEFAULT NULL,
  `gmt_create` datetime DEFAULT NULL,
  `gmt_modified` datetime DEFAULT NULL,
  PRIMARY KEY (`row_key`),
  KEY `idx_branch_id` (`branch_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

腳本

https://github.com/seata/seata/tree/1.2.0/script

server（TC）

# github上的文件位置
seata/script/server/db/mysql.sql

client（TM/RM）

# github上的文件位置
seata/script/client/at/db/mysql.sql

AT模型

TM

項目名：seata-one

db名：seata-rm-one

業務：插入tbl_one

pom.xml

<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-alibaba-seata</artifactId>
    <version>2.2.0.RELEASE</version>
</dependency>

註解

@GlobalTransactional(rollbackFor = Exception.class)

db.sql

CREATE TABLE `tbl_XXX` (
  `id` int(16) NOT NULL AUTO_INCREMENT,
  `name` varchar(16) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=31 DEFAULT CHARSET=utf8;

# 該表是規定好的
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=41 DEFAULT CHARSET=utf8;

RM

項目名：seata-two

db名：seata-rm-two

業務：插入tbl_two

項目名：seata-three

db名：seata-rm-three

業務：插入tbl_three

下面兩個配置，不配置也行，走默認8091。

registry.conf

file.conf

pom.xml

<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-alibaba-seata</artifactId>
    <version>2.2.0.RELEASE</version>
</dependency>

db.sql

CREATE TABLE `tbl_XXX` (
  `id` int(16) NOT NULL AUTO_INCREMENT,
  `name` varchar(16) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=31 DEFAULT CHARSET=utf8;

# 該表是規定好的
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=41 DEFAULT CHARSET=utf8;

代碼演示

TM

pom.xml

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.dandan</groupId>
    <artifactId>seata-one</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>seata-one</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>Greenwich.SR2</spring-cloud.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>

        <!-- mysql:MyBatis相關依賴 -->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.0.0</version>
        </dependency>

        <!-- mysql:mysql驅動 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

        <!-- mysql:阿里巴巴數據庫連接池 -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.12</version>
        </dependency>

        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-alibaba-seata</artifactId>
            <version>2.2.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Greenwich.SR2</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

application.yml

server:
  port: 1001

spring:
  cloud:
    alibaba:
      seata:
        tx-service-group: my_tx_group
  application:
    name: one


  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://192.168.1.113:3306/seata-rm-one?characterEncoding=UTF-8&serverTimezone=Asia/Shanghai
    username: root
    password: 123456
    dbcp2:
      initial-size: 5
      min-idle: 5
      max-total: 5
      max-wait-millis: 200
      validation-query: SELECT 1
      test-while-idle: true
      test-on-borrow: false
      test-on-return: false

mybatis:
  mapper-locations:
  - classpath:mapper/*.xml

eureka:
  client:
    service-url:
      defaultZone: http://localhost:7900/eureka/

#logging:
#  level:
#    root: debug

啓動類

@SpringBootApplication
public class SeataOneApplication {

    public static void main(String[] args) {
        SpringApplication.run(SeataOneApplication.class, args);
    }

    @Bean
    @LoadBalanced
    public RestTemplate restTemplate() {
        return new RestTemplate();
    }
}

controller

@RestController
public class OneController {

    @Autowired
    RmOneService rmOneService;

    @GetMapping("/one")
    @GlobalTransactional(rollbackFor = Exception.class)
    public String one() throws InterruptedException {
        rmOneService.rm1();
//        TimeUnit.MINUTES.sleep(1);
        System.out.println(1/0);
        return "success";
    }    
}

RmOneService

@Service
public class RmOneService {
	
	@Autowired
	TblOneDao mapper;

	public String rm1() {
		TblOne o = new TblOne();
		o.setId(1);
		o.setName("rm1");
		mapper.insertSelective(o);

		rm2();
		rm3();
		
		return "";
	}	
	
	@Autowired
	private RestTemplate restTemplate;
	
	private void rm2() {
		restTemplate.getForEntity("http://two/rm2", null);
	}
	private void rm3() {
		restTemplate.getForEntity("http://three/rm3", null);
	}
}

RM1

pom.xml

同上

application.yml

同上

啓動類

同上

controller

@RestController
public class TwoController {

    @Autowired
    private RmTwoService rmTwoService;

    @GetMapping("/rm2")
    public String two(){

        rmTwoService.rm2();
//        int i = 1/0;
        return "success";
    }
}

RmTwoService

@Service
public class RmTwoService {
	
	@Autowired
	TblTwoDao mapper;
	
	public String rm2() {
		TblTwo o = new TblTwo();
		o.setId(2);
		o.setName("rm2");
		mapper.insertSelective(o);
		
		return "";
	}
}

RM2

同RM1

TCC模型

try，confirm，cancel 中獨立事務。通過業務回滾，此時不用undo.log表了。

tcc場景：1.混合場景。2。獨立場景。

代碼演示

pom.xml、application.yml、啓動類配置同上

TM

RmOneInterface

package com.dandan.seataone.service;

import io.seata.rm.tcc.api.BusinessActionContext;
import io.seata.rm.tcc.api.LocalTCC;
import io.seata.rm.tcc.api.TwoPhaseBusinessAction;

@LocalTCC
public interface RmOneInterface {

    @TwoPhaseBusinessAction(name = "rm1TccAction" , commitMethod = "rm1Commit" ,rollbackMethod = "rm1Rollback")
    public String rm1(BusinessActionContext businessActionContext);

    public boolean rm1Commit(BusinessActionContext businessActionContext);

    public boolean rm1Rollback(BusinessActionContext businessActionContext);
}

controller

@Autowired
private RmOneInterface rmOneInterface;

@GetMapping("/one-tcc")
@GlobalTransactional(rollbackFor = Exception.class)
public String oneTcc() throws InterruptedException {
	rmOneInterface.rm1(null);
	return "success";
}

RmOneInterfaceImpl

package com.dandan.seataone.service;

import io.seata.rm.tcc.api.BusinessActionContext;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.client.RestTemplate;

@Component
public class RmOneInterfaceImpl implements RmOneInterface {

    @Override
    @Transactional
    public String rm1(BusinessActionContext businessActionContext) {
        // 查詢是事務記錄表，xxxx
        System.out.println("rm1 try");

        rm2();
        rm3();
//        System.out.println(1/0);
        return null;
    }

    @Override
    @Transactional
    public boolean rm1Commit(BusinessActionContext businessActionContext) {
        System.out.println("rm1 confirm");
        return true;
    }

    @Override
    @Transactional
    public boolean rm1Rollback(BusinessActionContext businessActionContext) {
        System.out.println("rm1 rollback");
        return true;
    }


    @Autowired
    private RestTemplate restTemplate;

    private void rm2() {
        restTemplate.getForEntity("http://two/rm2-tcc", null);
    }

    private void rm3() {
        restTemplate.getForEntity("http://three/rm3-tcc", null);
    }
}

RM

RmTwoInterface

package com.dandan.seatatwo.service;

import io.seata.rm.tcc.api.BusinessActionContext;
import io.seata.rm.tcc.api.LocalTCC;
import io.seata.rm.tcc.api.TwoPhaseBusinessAction;

@LocalTCC
public interface RmTwoInterface {

    @TwoPhaseBusinessAction(name = "rm1TccAction" , commitMethod = "rm1Commit" ,rollbackMethod = "rm1Rollback")
    public String rm2(BusinessActionContext businessActionContext);

    public boolean rm1Commit(BusinessActionContext businessActionContext);

    public boolean rm1Rollback(BusinessActionContext businessActionContext);
}

TwoController

@Autowired
private RmTwoInterface rmTwoInterface;

@GetMapping("/rm2-tcc")
@GlobalTransactional(rollbackFor = Exception.class)
public String twoTcc(){
    rmTwoInterface.rm2(null);
    //        int i = 1/0;
    return "success";
}

RmTwoInterfaceImpl

package com.dandan.seatatwo.service;

import io.seata.rm.tcc.api.BusinessActionContext;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.client.RestTemplate;

@Component
public class RmTwoInterfaceImpl implements RmTwoInterface {

    @Override
    @Transactional
    public String rm2(BusinessActionContext businessActionContext) {
        System.out.println("rm2 try");
//        System.out.println(1/0);

        return null;
    }

    @Override
    @Transactional
    public boolean rm1Commit(BusinessActionContext businessActionContext) {
        System.out.println("rm2 confirm");
        return true;
    }

    @Override
    @Transactional
    public boolean rm1Rollback(BusinessActionContext businessActionContext) {
        System.out.println("rm2 rollback");
        return true;
    }
}

seata實戰

eureka

搭建TC

下載 seata-server

修改配置。

添加seata-server-db

腳本

server（TC）

client（TM/RM）

AT模型

TM

pom.xml

註解

db.sql

RM

pom.xml

db.sql

代碼演示

TM

pom.xml

application.yml

啓動類

controller

RmOneService

RM1

pom.xml

application.yml

啓動類

controller

RmTwoService

RM2

TCC模型

代碼演示

TM

RmOneInterface

controller

RmOneInterfaceImpl

RM

RmTwoInterface

TwoController

RmTwoInterfaceImpl

性能比較