seata服务
环境
seata 1.3.0
nacos 2.0.3
新建命名空间
为了和开发的项目进行区分，在nacos新建了一个命名空间:seata，并新建了个group:SEATA_GROUP
seata的id是69...
配置registry.conf
文件位置：seata/conf/registry.conf
完整配置如下
# 服务注册地址(把seata服务注册到nacos)
registry {
# file 、nacos 、eureka、redis、zk、consul、etcd3、sofa
type = "nacos"
nacos {
application = "seata-server"
# nacos的地址
serverAddr = "192.168.1.135:8848"
# group
group = "SEATA_GROUP"
# seata的命名空间
namespace = "69aee9e4-5654-4f6b-87f6-47c88b7fdb28"
cluster = "default"
}
}
# 配置地址(由于nacos也是配置中心，所以把配置也存入nacos)
config {
# file、nacos 、apollo、zk、consul、etcd3
type = "nacos" # 使用nacos配置
nacos {
# nacos的地址
serverAddr = "192.168.1.135:8848"
# group
group = "SEATA_GROUP"
# seata的命名空间
namespace = "69aee9e4-5654-4f6b-87f6-47c88b7fdb28"
}
}
因为使用nacos config就不需要设置file.conf了，可以忽略
编辑配置文件
在conf下新建nacos-config.txt内容如下(其实在什么目录下建都无所谓)
service.vgroupMapping.dddstruct_tx_group=default
store.mode=db
store.db.datasource=druid
store.db.dbType=mysql
store.db.driverClassName=com.mysql.jdbc.Driver
# 数据库
store.db.url=jdbc:mysql://192.168.1.135:3306/dddstruct-seata
store.db.user=root
store.db.password=Xiaoming58
store.db.minConn=5
store.db.maxConn=30
store.db.globalTable=global_table
store.db.branchTable=branch_table
store.db.lockTable=lock_table
store.db.queryLimit=100
其实还有很多参数可配，暂时使用默认就行了
上传配置文件至nacos
sh nacos-config.sh 127.0.0.1
就已经上传成功了，nacos-config.sh的脚本如下
#!/usr/bin/env bash
if [ $# != 1 ]; then
echo "./nacos-config.sh nacosIp"
exit -1
fi
nacosIp=$1
echo "set nacosIp=$nacosIp"
error=0
for line in $(cat nacos-config.txt)
do
key=${line%%=*}
value=${line#*=}
echo "\r\n set "${key}" = "${value}
result=`curl -X POST "http://$nacosIp:8848/nacos/v1/cs/configs?dataId=$key&group=SEATA_GROUP&content=$value"`
if [ "$result"x == "true"x ]; then
echo "\033[42;37m $result \033[0m"
else
echo "\033[41;37 $result \033[0m"
let error++
fi
done
if [ $error -eq 0 ]; then
echo "\r\n\033[42;37m init nacos config finished, please start seata-server. \033[0m"
else
echo "\r\n\033[41;33m init nacos config fail. \033[0m"
fi
这个脚本指定不了命名空间，端口等，应该有更好的脚本，但是这个也够用了，如果想换命名空间，去nacos克隆配置即可，上传后配置如下
image.png
启动seata
进入bin目录下./seata-server.sh 启动即可
数据库
数据库分两种，一种是seata服务使用的数据库，通过store.db.url指定，一种是项目使用的数据库
image.png
seata服务数据库
需要新建store.db.url指定的数据库，然后新建三张表， 对应
store.db.globalTable=global_table
store.db.branchTable=branch_table
store.db.lockTable=lock_table
这三张表，脚本如下
-- -------------------------------- 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;
项目数据库
项目数据库中每个微服务都要加一个表undo_log，脚本如下
-- for AT mode you must to init this sql for you business database. the seata server not need it.
CREATE TABLE IF NOT EXISTS `undo_log`
(
`branch_id` BIGINT(20) NOT NULL COMMENT 'branch transaction id',
`xid` VARCHAR(100) 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
AUTO_INCREMENT = 1
DEFAULT CHARSET = utf8 COMMENT ='AT transaction mode undo table';
项目配置
引入依赖
<!--seata-->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-seata</artifactId>
<version>1.3.0</version>
</dependency>
application.yml
seata:
service:
grouplist:
seata-server: 192.168.1.135:8091
# 下面俩个seata服务的配置一样
registry:
type: nacos
nacos:
application: seata-server
serverAddr: 192.168.1.135:8848
group: SEATA_GROUP
cluster: default
namespace: 69aee9e4-5654-4f6b-87f6-47c88b7fdb28
config:
type: nacos
nacos:
serverAddr: 192.168.1.135:8848
group: SEATA_GROUP
namespace: 69aee9e4-5654-4f6b-87f6-47c88b7fdb28
spring-cloud-alibaba配置
spring:
...
## cloud
cloud:
alibaba:
## seata
seata:
#自定义事务组名称需要与seata-server中的对应
tx-service-group: dddstruct_tx_group
注意dddstruct_tx_group与上面的service.vgroupMapping.dddstruct_tx_group=default对应
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