seata

网友投稿 848 2023-02-28

seata

seata

seata-1.4.0安装及使用

1、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。

详见官方文档:https://seata.io/zh-cn/docs/overview/what-is-seata.html

网上的多是0.9.0版本的安装方式,这里记录安装seata-1.4.0版本的方式,在win10环境下安装,centos7与此相同。

-

需要-seata-1.4.0.zip 和 seata-server-1.4.0.zip两个安装包

-:https://github.com/seata/seata/releases

2.1、seata-server-1.4.0

安装配置

解压压缩包,修改conf内的配置文件

2.1.1、registry.conf修改:

我使用的nacos作为配置中心和注册中心,使用将配置文件改为nacos

registry {

# file 、nacos 、eureka、redis、zk、consul、etcd3、sofa

type = "nacos"

loadBalance = "RandomLoadBalance"

loadBalanceVirtualNodes = 10

nacos {

application = "seata-server"

serverAddr = "127.0.0.1:8848"

group = "SEATA_GROUP"

namespace = ""

cluster = "default"

username = "nacos"

password = "nacos"

}

}

config {

# file、nacos 、apollo、zk、consul、etcd3

type = "nacos"

nacos {

serverAddr = "127.0.0.1:8848"

namespace = ""

group = "SEATA_GROUP"

username = "nacos"

password = "nacos"

}

}

2.1.2、file.conf修改:

修改数据库地址,注意mysql5/mysql8驱动不同

store {

## store mode: file、db、redis

mode = "db"

## database store property

db {

## the implement of javax.sql.DataSource, such as DruidDataSource(druid)/BasicDataSource(dbcp)/HikariDataSource(hikari) etc.

datasource = "druid"

## mysql/oracle/postgresql/h2/oceanbase etc.

dbType = "mysql"

driverClassName = "com.mysql.cj.jdbc.Driver"

url = "jdbc:mysql://127.0.0.1:3307/seata?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf8&useSSL=true"

user = "root"

password = "123456"

minConn = 5

maxConn = 100

globalTable = "global_table"

branchTable = "branch_table"

lockTable = "lock_table"

queryLimit = 100

maxWait = 5000

}

}

2.1.3、创建数据

创建数据库seata,并建立下面三张表(branch_table, global_table, lock_table),创建undo_log表放到业务库中

-- the table to store GlobalSession data

drop table if exists `global_table`;

create taCRlMable `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`)

);

-- the table to store BranchSession data

drop table if exists `branch_table`;

create table `branch_table` (

`branch_id` bigint not null,

`xid` varchar(128) not null,

`transaction_id` bigint ,

`resource_group_id` varchar(32),

`resource_id` varchar(256) ,

`lock_key` varchar(128) ,

`branch_type` varchar(8) ,

`status` tinyint,

`client_id` varchar(64),

`application_data` varchar(2000),

`gmt_create` datetime,

`gmt_modified` datetime,

primary key (`branch_id`),

key `idx_xid` (`xid`)

);

-- the table to store lock data

drop table if exists `lock_table`;

create table `lock_table` (

`row_key` varchar(128) not null,

`xid` varchar(96),

`transaction_id` long ,

`branch_id` long,

`resource_id` varchar(256) ,

`table_name` varchar(32) ,

`pk` varchar(36) ,

`gmt_create` datetime ,

`gmt_modified` datetime,

primary key(`row_key`)

);

-- the table to store seata xid data

-- 0.7.0+ add context

-- you must to init this sql for you business databese. the seata server not need it.

-- 此脚本必须初始化在你当前的业务数据库中,用于AT 模式XID记录。与server端无关(注:业务数据库)

-- 注意此处0.3.0+ 增加唯一索引 ux_undo_log

drop table `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;

2.1.4、启动

seata-1.4\bin目录下:双击 seata-server.bat

nacos中查看服务是否注册成功

2.2 seata-1.4.0.

配置

解压安装包,并修改配置

2.2.3 修改config.txt

路径:script\config-center

修改service.vgroupMapping和数据库地址

service.vgroupMapping.system-server-group=default

service.vgroupMapping.product-server-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://192.168.111.130:3307/seata?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf8&useSSL=true

store.db.user=root

store.db.password=123456

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

注:

service.vgroupMapping.system-server-group=default

service.vgroupMapping.product-server-group=default

#system-server-group、product-server-group 与项目模块中yml配置的seata.tx-service-group内容相同

2.2.3 启动nacos-config.sh,

将配置注入到nacos中

1、在seata-server-1.4.0\script\config-center\nacos目录下,右键 Git Bash Here

2、输入命令:

sh nacos-config.sh -h 127.0.0.1 -p 8848 -g SEATA_GROUP -u nacos -w nacos

返回成功

2.2.3、nacos中查看配置

在nacos配置列表中找到config.txt配置的vgroupMapping,即说明注入成功

![在这里插入图片描述](https://img-blog.csdnimg-/20201214150808987.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zNzY5ODMzNg==,size_16,color_FFFFFF,t_70#pic_center

3、SpringCloud 配置

3.1、pom添加依赖

com.alibaba.cloud

spring-cloud-starter-alibaba-seata

io.seata

seata-spring-boot-starter

io.seata

seata-spring-boot-starter

1.4.0

注:seata-spring-boot-starter的版本与安装版本一致

3.2、修改yml配置文件

seata:

enabled: http://true

application-id: product-server

tx-service-group: product-server-group

enable-auto-data-source-proxy: true

config:

type: nacos

nacos:

namespace:

server-addr: 127.0.0.1:8848

group: SEATA_GROUP

userName: "nacos"

password: "nacos"

registry:

type: nacos

nacos:

application: seata-server

server-addr: 127.0.0.1:8848

namespace:

userName: "nacos"

password: "nacos"

3.3、代码上添加注解:

application启动类上添加:

@EnableAutoDataSourceProxy

service上添加:

@GlobalTransactional(rollbackFor = Exception.class)

3.4、启动服务:

控制台输出:

3.5、测试

调用方控制台打印

被调用方异常控制台打印:

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