先介绍一下环境
使用的是SpringCloud Alibaba, SpringBoot 2.3.5.RELEASE, seata1.5.2(linux环境)
首先就是nacos的环境配置,这里就不讲了
seata1.5.2 下载地址:下载中心
下载下来之后,进行压缩包的解压,解压完之后,进入seata/conf文件夹进行配置文件(application.yml)的配置
server:
port: 7091
spring:
application:
name: seata-server
logging:
config: classpath:logback-spring.xml
file:
path: ${user.home}/logs/seata
extend:
logstash-appender:
destination: 127.0.0.1:4560
kafka-appender:
bootstrap-servers: 127.0.0.1:9092
topic: logback_to_logstash
console:
user:
username: seata
password: seata
seata:
config:
# support: nacos, consul, apollo, zk, etcd3
type: nacos
nacos:
server-addr: 127.0.0.1:8848 nacos的ip及端口
namespace: seata
group: SEATA_GROUP
username: nacos
password: nacos
data-id: seataServer.properties
registry:
# support: nacos, eureka, redis, zk, consul, etcd3, sofa
type: nacos
nacos:
application: seata-server
server-addr: 127.0.0.1:8848
group: SEATA_GROUP
namespace: seata
cluster: default #这个还是有必要的,如果不配置的话,微服务一直报error
username: nacos
password: nacos
# store:
# support: file 、 db 、 redis
# mode: file
# server:
# service-port: 8091 #If not configured, the default is '${server.port} + 1000'
security:
secretKey: SeataSecretKey0c382ef121d778043159209298fd40bf3850a017
tokenValidityInMilliseconds: 1800000
ignore:
urls: /,/**/*.css,/**/*.js,/**/*.html,/**/*.map,/**/*.svg,/**/*.png,/**/*.ico,/console-fe/public/**,/api/v1/auth/login
然后创建一个新的数据库"seata",并执行如下sql
-- -------------------------------- The script used when storeMode is 'db' --------------------------------
-- the table to store GlobalSession data
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_status_gmt_modified` (`status` , `gmt_modified`),
KEY `idx_transaction_id` (`transaction_id`)
) ENGINE = InnoDB
DEFAULT CHARSET = utf8mb4;
-- the table to store BranchSession data
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 = utf8mb4;
-- the table to store lock data
CREATE TABLE IF NOT EXISTS `lock_table`
(
`row_key` VARCHAR(128) NOT NULL,
`xid` VARCHAR(128),
`transaction_id` BIGINT,
`branch_id` BIGINT NOT NULL,
`resource_id` VARCHAR(256),
`table_name` VARCHAR(32),
`pk` VARCHAR(36),
`status` TINYINT NOT NULL DEFAULT '0' COMMENT '0:locked ,1:rollbacking',
`gmt_create` DATETIME,
`gmt_modified` DATETIME,
PRIMARY KEY (`row_key`),
KEY `idx_status` (`status`),
KEY `idx_branch_id` (`branch_id`),
KEY `idx_xid_and_branch_id` (`xid` , `branch_id`)
) ENGINE = InnoDB
DEFAULT CHARSET = utf8mb4;
CREATE TABLE IF NOT EXISTS `distributed_lock`
(
`lock_key` CHAR(20) NOT NULL,
`lock_value` VARCHAR(20) NOT NULL,
`expire` BIGINT,
primary key (`lock_key`)
) ENGINE = InnoDB
DEFAULT CHARSET = utf8mb4;
INSERT INTO `distributed_lock` (lock_key, lock_value, expire) VALUES ('AsyncCommitting', ' ', 0);
INSERT INTO `distributed_lock` (lock_key, lock_value, expire) VALUES ('RetryCommitting', ' ', 0);
INSERT INTO `distributed_lock` (lock_key, lock_value, expire) VALUES ('RetryRollbacking', ' ', 0);
INSERT INTO `distributed_lock` (lock_key, lock_value, expire) VALUES ('TxTimeoutCheck', ' ', 0);
然后还需要再自己的微服务数据库中新创建一张数据表
CREATE TABLE `undo_log` (
`branch_id` bigint(20) NOT NULL COMMENT 'branch transaction id',
`xid` varchar(128) NOT NULL COMMENT 'global transaction id',
`context` varchar(128) NOT NULL COMMENT 'undo_log context,such as serialization',
`rollback_info` longblob NOT NULL COMMENT 'rollback info',
`log_status` int(11) NOT NULL COMMENT '0:normal status,1:defense status',
`log_created` datetime(6) NOT NULL COMMENT 'create datetime',
`log_modified` datetime(6) NOT NULL COMMENT 'modify datetime',
UNIQUE KEY `ux_undo_log` (`xid`,`branch_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='AT transaction mode undo table';
然后在nacos中新增配置文件,将配置文件里面的mysql改成自己的就行
store.mode=db
store.lock.mode=db
store.session.mode=db
store.db.datasource=druid
store.db.dbType=mysql
store.db.driverClassName=com.mysql.cj.jdbc.Driver
store.db.url=jdbc:mysql://ip:3306/seata?useUnicode=true&rewriteBatchedStatements=true
store.db.user=root
store.db.password=root
store.db.minConn=5
store.db.maxConn=30
store.db.globalTable=global_table
store.db.branchTable=branch_table
store.db.distributedLockTable=distributed_lock
store.db.queryLimit=100
store.db.lockTable=lock_table
store.db.maxWait=5000
service.vgroupMapping.demo_tx_group=default
然后就可以进行seata-server的启动了
进入seata目录里面的bin目录进行服务的启动
这里注意一点启动时候指定ip,否则注册到nacos的seata服务ip不是机器ip(会变成内网ip)
启动命令: sh seata-server.sh -h ip (这里的 “ip” 改为机器ip即可)
到这里,seata就起来了,验证一下,看看自己的nacos里面有没有成功注册进seata-server
到这seata-server的内容就完成了,然后就是微服务侧的配置了
在自己的微服务的配置文件中加入以下配置 (设计到的微服务都需要加上)
seata:
enabled: true
application-id: ${spring.application.name}
tx-service-group: demo_tx_group
service:
vgroup-mapping:
demo_tx_group: default
grouplist:
default: 127.0.0.1:8091 #这里是seata的ip 端口
config:
type: nacos
nacos:
server-addr: 127.0.0.1:8848
group: SEATA_GROUP
namespace: seata
username: nacos
password: nacos
data-id: seataServer.properties
到这基本配置完成
但是, 有个非常坑的点,Springboot的数据连接池使用的是 Hikari,seata这时候不会自动回滚,但是也不报错,微服务的xid也没问题,微服务和seata都显示已经回滚,但是数据库一直没回滚;
这时候需要自己配置数据源
@Configuration
@Data
public class DataSourceConfig {
@Value("${spring.datasource.url}")
private String url;
@Value("${spring.datasource.username}")
private String userName;
@Value("${spring.datasource.password}")
private String password;
@Value("${spring.datasource.driver-class-name}")
private String driveClassName;
}
@Configuration
public class DataSourceProxyConfig {
@Autowired
private DataSourceConfig dataSourceConfig;
@Bean("dataSource")
public DataSource druidDataSource() {
HikariDataSource hikariDataSource = new HikariDataSource();
hikariDataSource.setJdbcUrl(dataSourceConfig.getUrl());
hikariDataSource.setUsername(dataSourceConfig.getUserName());
hikariDataSource.setPassword(dataSourceConfig.getPassword());
hikariDataSource.setDriverClassName(dataSourceConfig.getDriveClassName());
return hikariDataSource;
}
@Bean
@Primary
public DataSourceProxy dataSourceProxy(DataSource dataSource) {
return new DataSourceProxy(dataSource);
}
}
然后还需要再服务的启动类上上面,排除数据源自动配置
@SpringBootApplication(exclude = DataSourceAutoConfiguration.class)
到这就全部完事啦,可以尽情使用@GlobalTransactional(rollbackFor = Exception.class) 啦