文章目录
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 [[ ${failCount} -eq 0 ]]; then
echo " Init nacos config finished, please start seata-server. "
else
echo " init nacos config fail. "
fi
注意事项:
如果需要保证
config.txt
和nacos-config.sh
文件必须再相同路径下;
如果不想再同一路径下,你可以定义其中的.sh
中的逻辑:
git bash窗口操作工具安装
将nacos的配置信息推送至nacos上。(必须保证nacos已启动!)
如果是windows用户,操作
xxx.sh
文件,可以借用Git bash
工具操作。
下载安装完成后,再指定路径下开启Git bash视窗
工具。
nacos中创建namespace
将配置信息推送nacos
使用如下指令实现配置推送至nacos:
sh nacos-config.sh -h 127.0.0.1 -p 8848 -g seata -t b1c7bf6e-f921-4687-86f8-b8be8bcb81ac -u nacos -w nacos
命令说明:
-h -p 指定nacos的端口地址;
-g 指定配置的分组,注意,是配置的分组;
-t 指定命名空间id;
-u -w指定nacos的用户名和密码,开启了nacos注册和配置认证的才需要指定。
命令执行完成后,git bash界面如下所示:
此时刷新nacos对应工作区间seata
,如下所示:
此时表示seata的配置已经存放至nacos中。
springcloud父子项目工程创建
创建前的版本对应说明
再官网中,对于各个技术框架的使用有严格的版本区分,之前没有在乎版本之间的关系,出了很多问题,导致花了很多额外的时间。
官网版本关系说明
父工程创建
由于本次使用的是Eclipse
,seata技术使用的版本是1.3.0
,参考上面的版本要求,此时的springcloud alibaba需要使用2.2.4.RELEASE
。
父工程中的主要依赖(文章末尾会给出项目git地址):
<spring.boot.version>2.2.2.RELEASE</spring.boot.version>
<spring.cloud.version>Hoxton.SR1</spring.cloud.version>
<spring.cloud.alibaba.version>2.2.4.RELEASE</spring.cloud.alibaba.version>
============================================================================
<dependencyManagement>
<dependencies>
<!--spring boot 2.2.2 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>${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: