java spring boot Seata(1.6.1)实战安装部署与Spring Cloud应用

Seata实战安装部署与Spring Cloud应用

一、Seata版本选择二、windows下载安装步骤-安装包方式三、linux下载安装步骤-docker方式四、Spring Cloud 应用相关配置五、遇到问题

前言：由于项目上使用微服架构，各服务都有独立的数据库，那么如何保证事务的一致性？而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。

一、Seata版本选择

二、windows下载安装步骤-安装包方式

1、下载安装包1.6.1

2、修改seata/seata/conf/application.yml内容，由于使用nacos作为注册中心主要seata的config、registry、store

修改前：

修改后

seata:

config:

# support: nacos, consul, apollo, zk, etcd3

type: nacos

nacos:

server-addr: 127.0.0.1:8848

namespace: 967df0d8-156b-441a-a5ab-615b4a865168

group: MY_GROUP

##if use MSE Nacos with auth, mutex with username/password attribute

#access-key: ""

#secret-key: ""

data-id: seataServer.properties

registry:

# support: nacos, eureka, redis, zk, consul, etcd3, sofa

type: nacos

# preferred-networks: 30.240.*

nacos:

application: seata-tc-server

server-addr: 127.0.0.1:8848

group: MY_GROUP

namespace: 967df0d8-156b-441a-a5ab-615b4a865168

#cluster: SH

##if use MSE Nacos with auth, mutex with username/password attribute

#access-key: ""

#secret-key: ""

store:

# support: file 、 db 、 redis

mode: db

db:

datasource: druid

db-type: mysql

driver-class-name: com.mysql.cj.jdbc.Driver

url: jdbc:mysql://127.0.0.1:3306/seata?useUnicode=true&rewriteBatchedStatements=true&serverTimezone=GMT

user: root

password: 123456

min-conn: 5

max-conn: 100

global-table: global_table

branch-table: branch_table

lock-table: lock_table

distributed-lock-table: distributed_lock

query-limit: 100

max-wait: 5000

3、根据seata/seata/script/server/db/mysql.sql建数据库表seata

-- -------------------------------- 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` (`xid`)

) 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);

4、在nacos中新增配置seataServer.properties

# 数据存储方式，db代表数据库

store.mode=db

store.db.datasource=druid

store.db.dbType=mysql

store.db.driverClassName=com.mysql.cj.jdbc.Driver

store.db.url=jdbc:mysql://127.0.0.1:3306/seata?useUnicode=true&rewriteBatchedStatements=true&serverTimezone=GMT

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

# 事务、日志等配置

server.recovery.committingRetryPeriod=3000

server.recovery.asynCommittingRetryPeriod=3000

server.recovery.rollbackingRetryPeriod=3000

server.recovery.timeoutRetryPeriod=3000

server.maxCommitRetryTimeout=-1

server.maxRollbackRetryTimeout=-1

server.rollbackRetryTimeoutUnlockEnable=false

server.undo.logSaveDays=7

server.undo.logDeletePeriod=86400000

# 客户端与服务端传输方式

transport.serialization=seata

transport.compressor=none

# 关闭metrics功能，提高性能

metrics.enabled=false

metrics.registryType=compact

metrics.exporterList=prometheus

metrics.exporterPrometheusPort=9898

5、访问后台http://127.0.0.1:7091/#/login

账号：seata 密码：seata

三、linux下载安装步骤-docker方式

参考：链接: docker部署seata

docker run -d --restart always --name seata-server -p 8091:8091 -p 7091:7091 -v /usr/local/seata/seata-server:/seata-server -e SEATA_PORT=8091 -e SEATA_IP=[自己的ip地址] seataio/seata-server:1.6.1

# Copyright 1999-2019 Seata.io Group.

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

# http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

server:

port: 7091

spring:

application:

name: seata-tc-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

namespace: 967df0d8-156b-441a-a5ab-615b4a865168

group: MY_GROUP

##if use MSE Nacos with auth, mutex with username/password attribute

#access-key: ""

#secret-key: ""

data-id: seataServer.properties

registry:

# support: nacos, eureka, redis, zk, consul, etcd3, sofa

type: nacos

# preferred-networks: 30.240.*

nacos:

application: seata-tc-server

server-addr: 127.0.0.1:8848

group: MY_GROUP

namespace: 967df0d8-156b-441a-a5ab-615b4a865168

#cluster: SH

##if use MSE Nacos with auth, mutex with username/password attribute

#access-key: ""

#secret-key: ""

store:

# support: file 、 db 、 redis

mode: db

db:

datasource: druid

db-type: mysql

driver-class-name: com.mysql.cj.jdbc.Driver

url: jdbc:mysql://127.0.0.1:3306/seata?useUnicode=true&rewriteBatchedStatements=true&serverTimezone=GMT

user: root

password:123456

min-conn: 5

max-conn: 100

global-table: global_table

branch-table: branch_table

lock-table: lock_table

distributed-lock-table: distributed_lock

query-limit: 100

max-wait: 5000

server:

#service-port: 8091 #If not configured, the default is '${server.port} + 1000'

vgroup-mapping: {"default_tx_group" : "default"}

security:

secretKey: SeataSecretKey0c382ef121d778043159209298fd40bf3850a017

tokenValidityInMilliseconds: 1800000

ignore:

urls: /,/**/*.css,/**/*.js,/**/*.html,/**/*.map,/**/*.svg,/**/*.png,/**/*.ico,/console-fe/public/**,/api/v1/auth/login

四、Spring Cloud 应用相关配置

seata版本可以根据自己项目版本进行选择，请查看 版本说明

1、父工程pom文件引入

1.6.1

io.seata

seata-all

${seata.version}

2、子工程pom文件引入

io.seata

seata-spring-boot-starter

${seata.version}

com.alibaba.cloud

spring-cloud-starter-alibaba-seata

${spring.cloud.alibaba.version}

io.seata

seata-all

seata-spring-boot-starter

io.seata

3、yml配置

# seata 配置， 代替file.conf和registry.conf配置

# seata 配置， 代替file.conf和registry.conf配置

sfs:

nacos:

server-addr: 127.0.0.1:8848

namespace: 967df0d8-156b-441a-a5ab-615b4a865168

group: MY_GROUP

seata:

enabled: true

application-id : ${spring.application.name}

tx-service-group: default_tx_group

use-jdk-proxy: true

enable-auto-data-source-proxy: true

registry:

type: nacos

nacos:

application: seata-tc-server

server-addr: ${sfs.nacos.server-addr}

namespace: ${sfs.nacos.namespace}

group: ${sfs.nacos.group}

config:

type: nacos

nacos:

server-addr: ${sfs.nacos.server-addr}

namespace: ${sfs.nacos.namespace}

group: ${sfs.nacos.group}

service:

vgroupMapping:

default_tx_group: default

#禁用hystrix导致启动失败

feign:

hystrix:

enabled: false

4、实现类上加上

@GlobalTransactional(rollbackFor = Exception.class)

5、每个数据库上加上undo_log

SET NAMES utf8mb4;

SET FOREIGN_KEY_CHECKS = 0;

-- ----------------------------

-- Table structure for undo_log

-- ----------------------------

DROP TABLE IF EXISTS `undo_log`;

CREATE TABLE `undo_log` (

`branch_id` bigint(20) NOT NULL COMMENT '分支事务ID',

`xid` varchar(100) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '全局事务ID',

`context` varchar(128) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '上下文',

`rollback_info` longblob NOT NULL COMMENT '回滚信息',

`log_status` int(11) NOT NULL COMMENT '状态，0正常，1全局已完成',

`log_created` datetime(6) NOT NULL COMMENT '创建时间',

`log_modified` datetime(6) NOT NULL COMMENT '修改时间',

UNIQUE INDEX `ux_undo_log`(`xid`, `branch_id`) USING BTREE

) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci COMMENT = 'AT transaction mode undo table' ROW_FORMAT = Compact;

SET FOREIGN_KEY_CHECKS = 1;

五、遇到问题

1、No available service

2023-02-06 09:51:29.885 [TID: N/A] [http-nio-8671-exec-1] INFO io.seata.tm.TransactionManagerHolder - TransactionManager Singleton io.seata.tm.DefaultTransactionManager@254a608b

2023-02-06 09:51:29.900 [TID: N/A] [http-nio-8671-exec-1] WARN c.d.pi.exception.MyExceptionHandler - No available service

io.seata.common.exception.FrameworkException: No available service

at io.seata.core.rpc.netty.AbstractNettyRemotingClient.loadBalance(AbstractNettyRemotingClient.java:266)

解决：逐步排除配置信息，请参考链接: seata异常信息排除

2、Seata报错 can not get cluster name in registry config ‘service.vgroupMapping.default

解决：请参考链接: seata相关问题解决

3、get table meta of the table XXX error: Failed to fetch schema of XXX

解决：数据表中没有主键，请参考链接: 表设置主键

4、链路中出现某服务报错，各服务不进行回滚

解决：先查看各服务的XID是否一致。

使用spring-cloud-starter-alibaba-seata，已经实现XID传递，注意配置中禁用feign的hystrix（也就是不能使用hystrix，参考链接: hystrix线程切换导致threadLocal丢失问题）

io.seata

seata-spring-boot-starter

${seata.version}

com.alibaba.cloud

spring-cloud-starter-alibaba-seata

${spring.cloud.alibaba.version}

io.seata

seata-all

seata-spring-boot-starter

io.seata

feign:

hystrix:

enabled: false

参考链接: 2022年SpringCloud Alibaba Seata1.42整合springboot处理分布式事务排坑版教程

参考链接: Seata分布式事务失效，不生效（事务不回滚）的常见场景

参考链接: feign调用服务，被调用服务seata事务不开启或者xid为空

参考文章

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