SpringCloud Alibaba——Seata 1.3.0配置和使用

Seata 1.3 下载

下载链接：
github seata下载地址

解压文件

修改配置文件

• 1、file.conf文件的修改

## transaction log store, only used in seata-server
store {
  ## store mode: file、db、redis
  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
  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.jdbc.Driver"
    url = "jdbc:mysql://192.168.99.100:3306/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
  }

}

• 2、修改registry.conf配置文件

registry {
  # file 、 nacos 、eureka、redis、zk、consul、etcd3、sofa
  type = "nacos"

  nacos {
    application = "seata-server"
    serverAddr = "127.0.0.1:8848"
    group = "SEATA_GROUP"
    namespace = ""
    cluster = "default"
    username = ""
    password = ""
  }
  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
  type = "nacos"

  nacos {
    serverAddr = "127.0.0.1:8848"
    namespace = ""
    group = "SEATA_GROUP"
    username = ""
    password = ""
  }
  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"
  }
}

注册和配置均采取nacos注册中心。

配置导入nacos，方便服务拉取seata配置

新建config.txt配置文件信息：

该文件目录地址存放 conf/ 下

其中的配置信息如下所示，可以直接粘贴至文件中：

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

# 此处可以修改为自己项目的分组
#service.vgroup_mapping.my_test_tx_group=default
## 1.0之后需要换成  vgroupMapping
## 可以写多个配置，只需要相关联的group统一就行
service.vgroupMapping.seata_test_group=default

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.tableMetaCheckerInterval=60000
client.rm.sqlParserType=druid
client.rm.reportSuccessEnable=false
client.rm.sagaBranchRegisterEnable=false
client.tm.commitRetryCount=5
client.tm.rollbackRetryCount=5
client.tm.defaultGlobalTransactionTimeout=60000
client.tm.degradeCheck=false
client.tm.degradeCheckAllowTimes=10
client.tm.degradeCheckPeriod=2000

#此处配置file.conf一致
store.mode=db

store.publicKey=
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
#配置数据库相关信息
##store.db.driverClassName=com.mysql.cj.jdbc.Driver
store.db.driverClassName=com.mysql.jdbc.Driver
store.db.url=jdbc:mysql://192.168.99.100:3306/seata?useUnicode=true
store.db.user=root
store.db.password=root
icKeyRetrieval=true
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.mode=single
store.redis.single.host=127.0.0.1
store.redis.single.port=6379
store.redis.maxConn=10
store.redis.minConn=1
store.redis.maxTotal=100
store.redis.database=0
store.redis.password=
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.undo.compress.enable=true
client.undo.compress.type=zip
client.undo.compress.threshold=64k
log.exceptionRate=100
transport.serialization=seata
transport.compressor=none
metrics.enabled=false
metrics.registryType=compact
metrics.exporterList=prometheus
metrics.exporterPrometheusPort=9898

编写nacos-config.sh脚本

该文件存放于./conf下

其中脚本代码如下所示：

#!/usr/bin/env bash
# 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.

while getopts ":h:p:g:t:u:w:" opt
do
  case $opt in
  h)
    host=$OPTARG
    ;;
  p)
    port=$OPTARG
    ;;
  g)
    group=$OPTARG
    ;;
  t)
    tenant=$OPTARG
    ;;
  u)
    username=$OPTARG
    ;;
  w)
    password=$OPTARG
    ;;
  ?)
    echo " USAGE OPTION: $0 [-h host] [-p port] [-g group] [-t tenant] [-u username] [-w password] "
    exit 1
    ;;
  esac
done

urlencode() {
  for ((i=0; i < ${#1}; i++))
  do
    char="${1:$i:1}"
    case $char in
    [a-zA-Z0-9.~_-]) printf $char ;;
    *) printf '%%%02X' "'$char" ;;
    esac
  done
}

if [[ -z ${host} ]]; then
    host=localhost
fi
if [[ -z ${port} ]]; then
    port=8848
fi
if [[ -z ${group} ]]; then
    group="SEATA_GROUP"
fi
if [[ -z ${tenant} ]]; then
    tenant=""
fi
if [[ -z ${username} ]]; then
    username=""
fi
if [[ -z ${password} ]]; then
    password=""
fi

nacosAddr=$host:$port
contentType="content-type:application/json;charset=UTF-8"

echo "set nacosAddr=$nacosAddr"
echo "set group=$group"

failCount=0
tempLog=$(mktemp -u)
function addConfig() {
  curl -X POST -H "${contentType}" "http://$nacosAddr/nacos/v1/cs/configs?dataId=$(urlencode $1)&group=$group&content=$(urlencode $2)&tenant=$tenant&username=$username&password=$password" >"${tempLog}" 2>/dev/null
  if [[ -z $(cat "${tempLog}") ]]; then
    echo " Please check the cluster status. "
    exit 1
  fi
  if [[ $(cat "${tempLog}") =~ "true" ]]; then
    echo "Set $1=$2 successfully "
  else
    echo "Set $1=$2 failure "
    (( failCount++ ))
  fi
}

count=0
# 这里可能和官网给出的不一样，那是因为我修改了，方便两个文件放在同一路径下
for line in $(cat $(dirname "$PWD")/conf/config.txt | sed s/[[:space:]]//g); do
  (( count++ ))
	key=${line%%=*}
    value=${line#*=}
	addConfig "${key}" "${value}"
done

echo "========================================================================="
echo " Complete initialization parameters,  total-count:$count ,  failure-count:$failCount "
echo "========================================================================="

if [[ ${failCount} -eq 0 ]]; then
	echo " Init nacos config finished, please start seata-server. "
else
	echo " init nacos config fail. "
fi

注意事项：

如果需要保证config.txt和nacos-config.sh文件必须再相同路径下；
如果不想再同一路径下，你可以定义其中的.sh中的逻辑：

git bash窗口操作工具安装

将nacos的配置信息推送至nacos上。(必须保证nacos已启动！)

如果是windows用户，操作xxx.sh文件，可以借用Git bash工具操作。

git-bash下载安装参考文章

下载安装完成后，再指定路径下开启Git bash视窗工具。

nacos中创建namespace

将配置信息推送nacos

使用如下指令实现配置推送至nacos：

sh nacos-config.sh -h 127.0.0.1 -p 8848 -g seata -t b1c7bf6e-f921-4687-86f8-b8be8bcb81ac -u nacos -w nacos

命令说明：

-h -p 指定nacos的端口地址；
-g 指定配置的分组，注意，是配置的分组；
-t 指定命名空间id；
-u -w指定nacos的用户名和密码，开启了nacos注册和配置认证的才需要指定。

命令执行完成后，git bash界面如下所示：

此时刷新nacos对应工作区间seata，如下所示：

此时表示seata的配置已经存放至nacos中。

springcloud父子项目工程创建

创建前的版本对应说明

再官网中，对于各个技术框架的使用有严格的版本区分，之前没有在乎版本之间的关系，出了很多问题，导致花了很多额外的时间。
官网版本关系说明

父工程创建

由于本次使用的是Eclipse，seata技术使用的版本是1.3.0，参考上面的版本要求，此时的springcloud alibaba需要使用2.2.4.RELEASE。

父工程中的主要依赖（文章末尾会给出项目git地址）：

<spring.boot.version>2.2.2.RELEASE</spring.boot.version>
<spring.cloud.version>Hoxton.SR1</spring.cloud.version>
<spring.cloud.alibaba.version>2.2.4.RELEASE</spring.cloud.alibaba.version>
============================================================================
<dependencyManagement>
        <dependencies>
            <!--spring boot 2.2.2 -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>${spring.boot.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!--spring cloud Hoxton.SR1 -->
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring.cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!--Spring cloud alibaba 2.1.0.RELEASE -->
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>${spring.cloud.alibaba.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>${lombok.version}</version>
            </dependency>
            <!--日志打印-->
            <dependency>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-log4j12</artifactId>
                <version>${log4j.version}</version>
            </dependency>
        </dependencies>
    </dependencyManagement>

子项目创建

由于牵扯到的微服务数量过多，并且很多配置类的都类似，此处只展示一个子服务的创建和配置，对于其他子服务配置有疑问的可以参考文章末尾给出的github代码链接。

有@GlobalTransactional操作的聚合服务类，需要再启动文件上移除springboot自带的DataSourceAutoConfiguration，并编写单独的数据源代理配置

其配置类如下所示：

import com.alibaba.druid.pool.DruidDataSource;
import io.seata.rm.datasource.DataSourceProxy;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;
import javax.sql.DataSource;

/**
 * 配置数据源，使用seata对数据源做代理
 */
@Configuration
public class DataSourcesConfig {
    
    


    @Value("${mybatis.mapperLocations}")
    private String mapperLocations;

    @Bean
    @ConfigurationProperties(prefix = "spring.datasource")
    public DataSource druidDataSource() {
    
    
        return new DruidDataSource();
    }

    /**
     * 使用 io.seata.rm.datasource.DataSourceProxy
     * @param druidDataSource
     * @return
     */
    @Bean
    public DataSourceProxy dataSourceProxy(DataSource druidDataSource) {
    
    
        return new DataSourceProxy(druidDataSource);
    }

    @Bean
    public SqlSessionFactory sqlSessionFactoryBean(DataSourceProxy dataSourceProxy) throws Exception {
    
    
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(dataSourceProxy);
        ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
        bean.setMapperLocations(resolver.getResources(mapperLocations));
        return bean.getObject();
    }
}

子项目依赖引入

由于使用的是父子工程模式开发，所以子项目中只需要引入其需要操作的依赖即可，本次探究的是seata 1.3.0的配置和使用，则只展示seata依赖：

<dependency>
	<groupId>com.alibaba.cloud</groupId>
	<artifactId>spring-cloud-starter-alibaba-seata</artifactId>
	<!--由于默认自带的版本很低，则需要手动移除，重新导入指定版本的seata -->
	<exclusions>
		<exclusion>
			<groupId>io.seata</groupId>
			<artifactId>seata-spring-boot-starter</artifactId>
		</exclusion>
	</exclusions>
</dependency>
<dependency>
	<groupId>io.seata</groupId>
	<artifactId>seata-spring-boot-starter</artifactId>
	<version>1.3.0</version>
</dependency>

子项目配置文件的编写

## 该服务的端口信息
server:
  port: 9001


## mybatis 配置
mybatis:
  ## 驼峰命名匹配
  configuration:
    map-underscore-to-camel-case: true
  type-aliases-package: cn.linkpower.dao
  ## 扫描mapper文件
  mapperLocations: classpath:mapper/*.xml

## 服务别名和nacos服务注册发现地址配置
spring:
  application:
    name: seata-order-service
  cloud:
    nacos:
      discovery:
        server-addr: localhost:8848
  datasource:
    url: jdbc:mysql://192.168.99.100:3306/seata_order?serverTimezone=UTC&useSSL=false&useUnicode=true&characterEncoding=utf-8
    driver-class-name: com.mysql.cj.jdbc.Driver
    username: root
    password: root
    

seata:
  enabled: true # 1.0新特性，需要依赖seata-spring-boot-starter 默认为true
  enable-auto-data-source-proxy: true  # 牵扯到回滚
  tx-service-group: seata_test_group  # 需要与config.txt中的 service.vgroupMapping.seata_test_group=default保持一致
  server:
    vgroup-mapping:
      seata_test_group: default # 需要与config.txt中的 service.vgroupMapping.seata_test_group=default 保持一致
    #grouplist:
    #  default: 127.0.0.1:8091
    disable-global-transaction: false
  registry:  ## 注册中心
    type: nacos #注册nacos
    nacos:
      application: seata-server  #nacos中seata-server启动注册成功后的服务名称
      server-addr: 127.0.0.1:8848
      username: nacos
      password: nacos
  config: ## 配置中心  与register.conf文件中的保持一致
    type: nacos
    nacos:
      server-addr: 127.0.0.1:8848
      application: SEATA_GROUP  #与register.conf文件中的保持一致
      username: nacos
      password: nacos
      namespace: b1c7bf6e-f921-4687-86f8-b8be8bcb81ac #默认public，此处是创建的seata工作区间

  client:
    rm:
      report-success-enable: false
          

## 监控相关
management.endpoints.web.exposure.include: '*'

feign:
  hystrix:
    enabled: false

此处的配置文件中，需要额外注意的一点：

github代码

github本篇博客代码地址

代码思维，sql导入注意规范参考资料

SpringCloud Alibaba学习(九)——seata分布式事务(0.9.0)