项目环境
项目基于若依微服务框架,具体组件版本如下
spring-boot.version:
2.3.4.RELEASE
spring-cloud.version:
Hoxton.SR8
spring-cloud-alibaba.version:
2.2.3.RELEASE
spring-cloud-starter-alibaba-nacos-discovery.version:
2.2.3.RELEASE
spring-cloud-starter-alibaba-nacos-config.version:
2.2.3.RELEASE
seata组件本身调度所使用的mysql数据库版本为5.7.37
此处并非指项目业务所使用的数据库。
必要资源
seata官网组件下载页面
https://seata.io/zh-cn/blog/download.html
需下载文件:
seata-server1.3.0服务端
开始
一.配置seata业务调度数据库
创建一个数据库,用于seata组件的业务调度。
sql语句脚本,可以打开源码目录下的script\server\db\mysql.sql来执行。
这里直接贴上来
-- -------------------------------- 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_gmt_modified_status` (`gmt_modified`, `status`),
KEY `idx_transaction_id` (`transaction_id`)
) ENGINE = InnoDB
DEFAULT CHARSET = utf8;
-- 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 = utf8;
-- the table to store lock data
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;
另外,需要再额外创建一张‘undo_log’表。
-- 注意此处0.3.0+ 增加唯一索引 ux_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;
最后是这样子
二.配置file.conf
打开服务端目录下的\conf\file.conf
参照以下内容进行编辑
## transaction log store, only used in seata-server
service {
#transaction service group mapping
#此处为配置事务组信息,“my_test_tx_group”和“default”为自定义,用于定义事务组名称;可以随便取。也可以默认不改。
vgroup_mapping.my_test_tx_group = "default"
#only support when registry.type=file, please don't set multiple addresses
# 此处为你的seate服务端地址
default.grouplist = "127.0.0.1:8091"
#disable seata
disableGlobalTransaction = false
}
store {
## store mode: file、db、redis
# 此处对于seata的业务调度信息存储模式,我们指定修改为'db'
mode = "db"
## file store property
file {
## store location dir
dir = "sessionStore"
# branch session size , if exceeded first try compress lockkey, still exceeded throws exceptions
maxBranchSessionSize = 16384
# globe session size , if exceeded throws exceptions
maxGlobalSessionSize = 512
# file buffer size , if exceeded allocate new buffer
fileWriteBufferCacheSize = 16384
# when recover batch read size
sessionReloadReadSize = 100
# async, sync
flushDiskMode = async
}
## database store property
# 此处配置你的seata业务调度数据库信息。
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"
# 如果数据库版本为8.0以上,则修改为com.mysql.cj.jdbc.Driver
driverClassName = "com.mysql.jdbc.Driver"
url = "jdbc:mysql://127.0.0.1:3306/alibaba_seata"
user = "root"
password = "root"
minConn = 5
maxConn = 30
globalTable = "global_table"
branchTable = "branch_table"
lockTable = "lock_table"
queryLimit = 100
maxWait = 5000
}
## redis store property
redis {
host = "127.0.0.1"
port = "6379"
password = ""
database = "0"
minConn = 1
maxConn = 10
queryLimit = 100
}
}
三.创建nacos命名空间
需要创建一个nacos命名空间,用于读取和开放seata的业务配置信息。
创建后可看到一传MD5,此为命名空间名(namespace)
四.配置registry.conf
接下来配置同目录下的registry.conf文件
参照以下内容进行编辑。
registry {
# file 、nacos 、eureka、redis、zk、consul、etcd3、sofa
# 此处修改为nacos,意思是使用nacos作为seata的业务调度注册中心。
type = "nacos"
# 此处配置nacos信息
nacos {
# 指定seata服务端注册在nacos的服务名称
application = "seata-server"
# nacos注册中心地址
serverAddr = "192.168.0.5:8848"
# 分组名称
group = "SEATA_GROUP"
# 命名空间
namespace = "fc0539dd-e76f-40ac-8f00-3b189d3e5075"
# 此处默认为"default"即可
cluster = "default"
# nacos控制台登录用户名
username = "nacos"
# nacos控制台登录密码
password = "nacos"
}
eureka {
serviceUrl = "http://localhost:8761/eureka"
application = "default"
weight = "1"
}
redis {
serverAddr = "localhost:6379"
db = 0
password = ""
cluster = "default"
timeout = 0
}
zk {
cluster = "default"
serverAddr = "127.0.0.1:2181"
sessionTimeout = 6000
connectTimeout = 2000
username = ""
password = ""
}
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"
}
}
config {
# file、nacos 、apollo、zk、consul、etcd3
# 此处修改为nacos,意思是使用nacos作为seata业务调度数据配置中心。
type = "nacos"
nacos {
# nacos配置中心地址
serverAddr = "192.168.0.5:8848"
# 命名空间
namespace = "fc0539dd-e76f-40ac-8f00-3b189d3e5075"
# 分组名称
group = "SEATA_GROUP"
# nacos控制台登录用户名
username = "nacos"
# nacos控制台登录密码
password = "nacos"
}
consul {
serverAddr = "127.0.0.1:8500"
}
apollo {
appId = "seata-server"
apolloMeta = "http://192.168.1.204:8801"
namespace = "application"
}
zk {
serverAddr = "127.0.0.1:2181"
sessionTimeout = 6000
connectTimeout = 2000
username = ""
password = ""
}
etcd3 {
serverAddr = "http://localhost:2379"
}
file {
name = "file.conf"
}
}
五.配置nacos推送脚本“config.txt”
打开服务端源码目录下的\script\config-center\config.txt
该配置主要用于将数量繁多的nacos配置文件批量推送到nacos配置中心。
参照以下内容进行修改。
transport.type=TCP
transport.server=NIO
transport.heartbeat=true
transport.enableClientBatchSendRequest=false
transport.threadFactory.bossThreadPrefix=NettyBoss
transport.threadFactory.workerThreadPrefix=NettyServerNIOWorker
transport.threadFactory.serverExecutorThreadPrefix=NettyServerBizHandler
transport.threadFactory.shareBossWorker=false
transport.threadFactory.clientSelectorThreadPrefix=NettyClientSelector
transport.threadFactory.clientSelectorThreadSize=1
transport.threadFactory.clientWorkerThreadPrefix=NettyClientWorkerThread
transport.threadFactory.bossThreadSize=1
transport.threadFactory.workerThreadSize=default
transport.shutdown.wait=3
# 这里的名字与file.conf中vgroup_mapping.my_test_tx_group = "default"相同
service.vgroupMapping.my_test_tx_group=default
# 这里的名字与file.conf中default.grouplist = "127.0.0.1:8091"相同
service.default.grouplist=127.0.0.1:8091
service.enableDegrade=false
service.disableGlobalTransaction=false
client.rm.asyncCommitBufferLimit=10000
client.rm.lock.retryInterval=10
client.rm.lock.retryTimes=30
client.rm.lock.retryPolicyBranchRollbackOnConflict=true
client.rm.reportRetryCount=5
client.rm.tableMetaCheckEnable=false
client.rm.sqlParserType=druid
client.rm.reportSuccessEnable=false
client.rm.sagaBranchRegisterEnable=false
client.tm.commitRetryCount=5
client.tm.rollbackRetryCount=5
client.tm.degradeCheck=false
client.tm.degradeCheckAllowTimes=10
client.tm.degradeCheckPeriod=2000
# 此处指定为db
store.mode=db
store.file.dir=file_store/data
store.file.maxBranchSessionSize=16384
store.file.maxGlobalSessionSize=512
store.file.fileWriteBufferCacheSize=16384
store.file.flushDiskMode=async
store.file.sessionReloadReadSize=100
store.db.datasource=druid
store.db.dbType=mysql
# 如果数据库版本为8.0以上,则修改为com.mysql.cj.jdbc.Driver
store.db.driverClassName=com.mysql.jdbc.Driver
store.db.url=jdbc:mysql://127.0.0.1:3306/alibaba_seata?useUnicode=true
# 数据库账户名
store.db.user=root
# 数据库密码
store.db.password=root
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
store.redis.host=127.0.0.1
store.redis.port=6379
store.redis.maxConn=10
store.redis.minConn=1
store.redis.database=0
store.redis.password=null
store.redis.queryLimit=100
server.recovery.committingRetryPeriod=1000
server.recovery.asynCommittingRetryPeriod=1000
server.recovery.rollbackingRetryPeriod=1000
server.recovery.timeoutRetryPeriod=1000
server.maxCommitRetryTimeout=-1
server.maxRollbackRetryTimeout=-1
server.rollbackRetryTimeoutUnlockEnable=false
client.undo.dataValidation=true
client.undo.logSerialization=jackson
client.undo.onlyCareUpdateColumns=true
server.undo.logSaveDays=7
server.undo.logDeletePeriod=86400000
client.undo.logTable=undo_log
client.log.exceptionRate=100
transport.serialization=seata
transport.compressor=none
metrics.enabled=false
metrics.registryType=compact
metrics.exporterList=prometheus
metrics.exporterPrometheusPort=9898
需要注意的是,在实际中要将以#开头的注释信息全部删除,不然脚本会执行失败。
六.推送seata配置信息到nacos
到服务端源码目录\script\config-center\nacos下
通过git bash here窗口执行shell运行命令,将seata配置推送至nacos上。
执行下列命令:
sh nacos-config.sh -h nacos服务ip地址
-p nacos服务端口
-g 分组名
-t 命名空间
-u nacos控制台登录账户
-w nacos控制台登录密码
例如:
sh nacos-config.sh -h 192.168.0.5 -p 8848 -g SEATA_GROUP -t fc0539dd-e76f-40ac-8f00-3b189d3e5075 -u nacos -w nacos
当输出“ Init nacos config finished, please start seata-server.”表示推送完成。
打开命名空间下的配置信息,可以看到已经推上来了。
七.启动seata服务端
进入seata服务端的\bin目录下,执行seata-server.bat文件(windows系统下),即可启动服务。
出现红框内的一行,说明启动成功了。
八.pom中引入依赖
<!-- springCloud Alibaba Seata 分布式组件 -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-seata</artifactId>
<version>2.2.3.RELEASE</version>
</dependency>
九.配置模块application.yaml信息
# seata配置信息
seata:
# 是否启用,true为启用
enabled: true
# 分布式事务服务id,默认同当前application.name相同
application-id: taobao-user-application
# 这里的名字与file.conf中vgroup_mapping.my_test_tx_group = "default"相同
tx-service-group: my_test_tx_group
enable-auto-data-source-proxy: true
# 此处配置该模块要连接的seata服务端等详细信息
service:
# 此处配置事务组信息,这里的名字与file.conf中的相同,也就是vgroup_mapping.my_test_tx_group = "default"
vgroup-mapping:
my_test_tx_group: default
# seata服务端地址,可以单个也可以多个。此处为单个。
grouplist:
default: 127.0.0.1:8091
# 指定seata的配置中心信息
config:
# 指定seata配置中心类型,为nacos
type: nacos
# nacos配置中心的详细信息
nacos:
# 所在的命名空间
namespace: fc0539dd-e76f-40ac-8f00-3b189d3e5075
# naocs配置中心地址
server-addr: 192.168.0.5:8848
# 所在的组
group: SEATA_GROUP
# nacos控制台登录账户
username: "nacos"
# nacos控制台登录密码
password: "nacos"
# 指定seata的注册中心信息
registry:
# 指定seata注册中心类型,为nacos
type: nacos
# nacos注册中心的详细信息
nacos:
# 指定本seata客户端在nacos注册中心的服务名
application: seata-server
# nacos注册中心地址
server-addr: 192.168.0.5:8848
# 所在的组
group: SEATA_GROUP
# 所在的命名空间
namespace: fc0539dd-e76f-40ac-8f00-3b189d3e5075
# nacos控制台登录账户
username: "nacos"
# nacos控制台登录密码
password: "nacos"
参考:
https://blog.csdn.net/shenyulong1214/article/details/109603231
https://blog.csdn.net/elias607/article/details/126272279
https://blog.csdn.net/Saintmm/article/details/121725763