seata1.3使用

目录

• 一、简介
• 二、新建seata数据库
• 三、nacos配置
• 四、seata安装
  • 1、docker方式安装
  • 2、k8s方式安装
• 五、springCloud中使用
• 六、参考

一、简介

Seata 是一款开源的分布式事务解决方案，致力于提供高性能和简单易用的分布式事务服务。Seata 将为用户提供了 AT、TCC、SAGA 和 XA 事务模式，为用户打造一站式的分布式解决方案。

1、版本选择
https://github.com/alibaba/spring-cloud-alibaba/wiki/版本说明

2、seata版本

• 本例使用的是seata：1.3.0

3、注册中心

• 本例使用nacos作为seata的注册中心和配置中心

二、新建seata数据库

• 新建数据库，名称叫rapid_seata
• schema地址 https://github.com/seata/seata/blob/1.3.0/script/server/db/mysql.sql

CREATE TABLE IF NOT EXISTS `global_table`
(
    `xid`                       VARCHAR(128) NOT NULL,
    `transaction_id`            BIGINT,
    `status`                    TINYINT      NOT NULL,
    `application_id`            VARCHAR(32),
    `transaction_service_group` VARCHAR(32),
    `transaction_name`          VARCHAR(128),
    `timeout`                   INT,
    `begin_time`                BIGINT,
    `application_data`          VARCHAR(2000),
    `gmt_create`                DATETIME,
    `gmt_modified`              DATETIME,
    PRIMARY KEY (`xid`),
    KEY `idx_gmt_modified_status` (`gmt_modified`, `status`),
    KEY `idx_transaction_id` (`transaction_id`)
) ENGINE = InnoDB DEFAULT CHARSET = utf8;

CREATE TABLE IF NOT EXISTS `branch_table`
(
    `branch_id`         BIGINT       NOT NULL,
    `xid`               VARCHAR(128) NOT NULL,
    `transaction_id`    BIGINT,
    `resource_group_id` VARCHAR(32),
    `resource_id`       VARCHAR(256),
    `branch_type`       VARCHAR(8),
    `status`            TINYINT,
    `client_id`         VARCHAR(64),
    `application_data`  VARCHAR(2000),
    `gmt_create`        DATETIME(6),
    `gmt_modified`      DATETIME(6),
    PRIMARY KEY (`branch_id`),
    KEY `idx_xid` (`xid`)
) ENGINE = InnoDB DEFAULT CHARSET = utf8;

CREATE TABLE IF NOT EXISTS `lock_table`
(
    `row_key`        VARCHAR(128) NOT NULL,
    `xid`            VARCHAR(96),
    `transaction_id` BIGINT,
    `branch_id`      BIGINT       NOT NULL,
    `resource_id`    VARCHAR(256),
    `table_name`     VARCHAR(32),
    `pk`             VARCHAR(36),
    `gmt_create`     DATETIME,
    `gmt_modified`   DATETIME,
    PRIMARY KEY (`row_key`),
    KEY `idx_branch_id` (`branch_id`)
) ENGINE = InnoDB DEFAULT CHARSET = utf8;

三、nacos配置

nacos的安装请参考我的另一篇文章：https://www.cnblogs.com/lvlinguang/p/15719224.html

1、新建命名空间

• 命名空间名称：seata
• 得到的命名空间ID：f01f8dbd-43a4-4500-84f8-b0041d4d0cbe

2、将seata配置信息推送至nacos
2.1、下载1.3.0的源码

• github地址：https://github.com/seata/seata/tree/1.3.0

2.2、修改/替换config.txt里的内容，如下

• config.txt文件路径：\script\config-center\config.txt
• 事务分组rapid_cloud_tx_group，这个是可以自定义修改的，该配置需要与项目中的事务分组配置保持一致

service.vgroupMapping.rapid_cloud_tx_group=default
# service.vgroupMapping.test_tx_group=default
# service.vgroupMapping.prod_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://127.0.0.1:8848/rapid_seata?useUnicode=true
store.db.user=root
store.db.password=123456

2.3、将配置信息推送至nacos

• nacos-config.sh文件路径：\script\config-center\nacos
• 在地址栏输入cmd并回车

nacos-config.sh -h 127.0.0.1 -p 8848 -g SEATA_GROUP -t b6e82b1b-176a-45d0-8c8c-701bdfc2e8a2

• 参数描述:

  • -h: host, 默认值 localhost
  • -p: port, 默认值 8848
  • -g: 配置分组 默认值 SEATA_GROUP
  • -t: 命名空间
  • -u: 用户名, nacos 1.2.0+ 之后添加权限验证 默认为''
  • -w: 密码, nacos 1.2.0+ 之后添加权限验证 默认为''

• 推送成功后如下图
  

四、seata安装

1、docker方式安装

1、拉取镜像

docker pull seataio/seata-server:1.3.0

2、新建目录

mkdir -p /home/apps/seata/config

# 进入目录
cd /home/apps/seata/config

3、新建registry.conf

• github地址：https://github.com/seata/seata/blob/1.3.0/server/src/main/resources/registry.conf

# 注册中心
registry {
  type = "nacos"
  nacos {
    application = "seata-server"
    serverAddr = "127.0.0.1:8848"
    group = "SEATA_GROUP"
    namespace = "f01f8dbd-43a4-4500-84f8-b0041d4d0cbe"
    cluster = "default"
    username = "nacos"
    password = "nacos"
  }
}

# 配置中心
config {
  type = "nacos"
  nacos {
    serverAddr = "127.0.0.1:8848"
    namespace = "f01f8dbd-43a4-4500-84f8-b0041d4d0cbe"
    group = "SEATA_GROUP"
    username = "nacos"
    password = "nacos"
  }
}

4、创建并启动

• SEATA_IP：seata注册到nacos上的ip地址，测试环境建议用外网地址，这样本地程序也可以连接到seata，生产环境建议用内网地址/不配置此项，提升应用速度及安全性。

docker run \
-d \
--name seata-server \
--restart=always \
--privileged=true \
-p 8091:8091 \
-e SEATA_IP=127.0.0.1 \
-e SEATA_PORT=8091 \
-e SEATA_CONFIG_NAME=file:/root/seata-config/registry \
-v /home/apps/seata/config:/root/seata-config  \
seataio/seata-server:1.3.0

2、k8s方式安装

apiVersion: v1
kind: Service
metadata:
  name: seata-server
  namespace: default
spec:
  type: ClusterIP
  selector:
    k8s-app: seata-server
  ports:
    - name: http
      port: 8091
      targetPort: 8091
      protocol: TCP

---

apiVersion: apps/v1
kind: Deployment
metadata:
  name: seata-server
  namespace: default
  labels:
    k8s-app: seata-server
spec:
  replicas: 1
  selector:
    matchLabels:
      k8s-app: seata-server
  template:
    metadata:
      labels:
        k8s-app: seata-server
    spec:
      containers:
        - name: seata-server
          image: seataio/seata-server:1.3.0
          imagePullPolicy: IfNotPresent
          env:
            - name: SEATA_CONFIG_NAME
              value: file:/root/seata-config/registry
            - name: SEATA_IP
              value: "127.0.0.1"
          ports:
            - name: http
              containerPort: 8091
              hostPort: 8091
              protocol: TCP
          volumeMounts:
            - name: seata-config
              mountPath: /root/seata-config
      volumes:
        - name: seata-config
          configMap:
            name: seata-server-config

---

apiVersion: v1
kind: ConfigMap
metadata:
  name: seata-server-config
  namespace: default
data:
  registry.conf: |
    registry {
        type = "nacos"
        nacos {
          application = "seata-server"
          serverAddr = "127.0.0.1:8848"
          group = "SEATA_GROUP"
          namespace = "f01f8dbd-43a4-4500-84f8-b0041d4d0cbe"
          username = "nacos"
          password = "nacos"
        }
    }
    config {
      type = "nacos"
      nacos {
        serverAddr = "127.0.0.1:8848"
        group = "SEATA_GROUP"
        namespace = "f01f8dbd-43a4-4500-84f8-b0041d4d0cbe"
        username = "nacos"
        password = "nacos"
      }
    }

五、springCloud中使用

1、pom文件配置

<properties>
    <spring-cloud-alibaba.version>2.1.1.RELEASE</spring-cloud-alibaba.version>
    <spring-boot.version>2.2.2.RELEASE</spring-boot.version>
    <spring-cloud.version>Hoxton.SR1</spring-cloud.version>
    <seata-version>1.3.0</seata-version>
</properties>

<dependencies>
    <!--seata-->
    <dependency>
        <groupId>com.alibaba.cloud</groupId>
        <artifactId>spring-cloud-starter-alibaba-seata</artifactId>
    </dependency>
    <dependency>
        <groupId>io.seata</groupId>
        <artifactId>seata-all</artifactId>
    </dependency>
    <dependency>
        <groupId>io.seata</groupId>
        <artifactId>seata-spring-boot-starter</artifactId>
    </dependency>
</dependencies>

<dependencyManagement>
    <dependencies>
        <!--spring cloud alibaba-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-alibaba-dependencies</artifactId>
            <version>${spring-cloud-alibaba.version}</version>
            <type>pom</type>
            <scope>import</scope>
            <exclusions>
                <exclusion>
                    <groupId>com.alibaba.cloud</groupId>
                    <artifactId>spring-cloud-alibaba-seata</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>io.seata</groupId>
                    <artifactId>seata-all</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <!--spring boot-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-dependencies</artifactId>
            <version>${spring-boot.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
        <!--spring cloud-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>${spring-cloud.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
        <!--web 模块-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <version>${spring-boot.version}</version>
            <exclusions>
                <!--排除tomcat依赖-->
                <exclusion>
                    <artifactId>spring-boot-starter-tomcat</artifactId>
                    <groupId>org.springframework.boot</groupId>
                </exclusion>
            </exclusions>
        </dependency>
        <!--seata 分布式事务-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-seata</artifactId>
            <version>2.1.4.RELEASE</version>
            <exclusions>
                <!--版本较低，因此排除-->
                <exclusion>
                    <groupId>io.seata</groupId>
                    <artifactId>seata-spring-boot-starter</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>io.seata</groupId>
            <artifactId>seata-spring-boot-starter</artifactId>
            <version>${seata-version}</version>
        </dependency>
        <dependency>
            <groupId>io.seata</groupId>
            <artifactId>seata-all</artifactId>
            <version>${seata-version}</version>
        </dependency>
    </dependencies>
</dependencyManagement>

2、yml配置

seata:
  enabled: true
  tx-service-group: rapid_cloud_tx_group
  service:
    vgroup-mapping:
      rapid_cloud_tx_group: default
  registry:
    type: nacos
    nacos:
      application: seata-server
      server-addr: 192.168.3.12:8848
      group: SEATA_GROUP
      namespace: 'f01f8dbd-43a4-4500-84f8-b0041d4d0cbe'
      username: 'nacos'
      password: 'nacos'
  config:
    type: nacos
    nacos:
      server-addr: ${seata.registry.nacos.server-addr}
      group: SEATA_GROUP
      namespace: 'f01f8dbd-43a4-4500-84f8-b0041d4d0cbe'
      username: 'nacos'
      password: 'nacos'

3、@GlobalTransactional 添加注解开启事务

@RestController
@RequestMapping("/user")
public class UserController {

    @GlobalTransactional
    @GetMapping(value = {"/test-tx"})
    public void txTest(Boolean rollBack) {
        //修改项目信息
        remoteProjectService.updateProject("1484aa83c695482a8dbcbe26cdfb6e6d", "测试事务修改");
        //修改用户信息
        userService.updateUserById("26ff71ec665b4557b4fe64ff1f7d469d", "事务修改");
    }
}

4、源代码案例

• https://toscode.gitee.com/lvlinguang/rapid-cloud-seata

六、参考

• https://blog.csdn.net/weixin_45103793/article/details/122982437
• https://blog.csdn.net/Main_1125/article/details/123709878
• https://zhuanlan.zhihu.com/p/443706623