springcloud 集成 seata1.3.0 时报错:
2022-08-04 00:00:00.000 ERROR 78958 --- [eoutChecker_2_1] i.s.c.r.netty.NettyClientChannelManager : Failed to get available servers: endpoint format should like ip:port
java.lang.IllegalArgumentException: endpoint format should like ip:port
at io.seata.discovery.registry.FileRegistryServiceImpl.lookup(FileRegistryServiceImpl.java:95) ~[seata-all-1.3.0.jar:1.3.0]
at io.seata.core.rpc.netty.NettyClientChannelManager.getAvailServerList(NettyClientChannelManager.java:217) ~[seata-all-1.3.0.jar:1.3.0]
at io.seata.core.rpc.netty.NettyClientChannelManager.reconnect(NettyClientChannelManager.java:162) ~[seata-all-1.3.0.jar:1.3.0]
at io.seata.core.rpc.netty.AbstractNettyRemotingClient$1.run(AbstractNettyRemotingClient.java:106) [seata-all-1.3.0.jar:1.3.0]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_275]
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [na:1.8.0_275]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) [na:1.8.0_275]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) [na:1.8.0_275]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_275]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_275]
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [netty-all-4.1.58.Final.jar:4.1.58.Final]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_275]
本文基于seata1.3.0版本,代表这1.X的版本,0.x版本的略有不同。
在文件类型的注册服务时,会通过FileRegistryServiceImpl#lookup(String)
方法根据VgroupMapping的key去寻找可用的Seata-server实例;报错的体现正是无法根据service.VgroupMapping
这个配置找到具体的Seata实例(IP:PORT信息);
几个字符串常量值如下:
String PREFIX_SERVICE_MAPPING = "vgroupMapping.";
String PREFIX_SERVICE_ROOT = "service";
String CONFIG_SPLIT_CHAR = ".";
private static final String POSTFIX_GROUPLIST = ".grouplist";
private static final String ENDPOINT_SPLIT_CHAR = ";";
private static final String IP_PORT_SPLIT_CHAR = ":";
获取当前服务组名称对应的seata集群名称的代码逻辑如下:
针对 service.vgroupMapping
,官方案例:Spring Cloud 快速集成 Seata是这么说的:
划重点:需要注意的是 service.vgroupMapping
这个配置,在 Spring Cloud 中默认是${spring.application.name}-fescar-service-group
再看博主debug时的默认 service.vgroupMapping
配置,居然是${spring.application.name}-seata-service-group
;
- 我程序的
spring.application.name
为trade-center
service.vgroupMapping
的配置为trade-center-seata-service-group
,不说好的是${spring.application.name}-fescar-service-group
吗!!!!!!!
等下我们再继续说,先让我喷一会:***********
,官方文档不更新的吗?不注意版本之间的差异吗?不标明版本差异吗?******
。
所以原因本质上只有一个:无法根据service.VgroupMapping
这个配置找到具体的Seata实例(IP:PORT信息);但导致该原因产生的方式会有很多种;
service.vgroupMapping
配置的服务组名称不符合Seata默认要求;前提:不在application.yml配置文件中手动通过seata.tx-service-group
属性指定seata服务组名称。
默认 service.vgroupMapping
这个配置,在 Spring Cloud 中默认是${spring.application.name}-seata-service-group
所以,当我们未按${spring.application.name}-seata-service-group
这个规则配置service.vgroupMapping
时会报错。
service.vgroupMapping
配置的seata集群名称没有对应的grouplist比如:这里我配置的service.vgroupMapping
值为seata-server-sh
,而配置的grouplist是属于default
的;
所以报错是因为通过service.vgroupMapping
配置找到seata集群名称seata-server-sh
,但是seata-server-sh
没有对应的grouplist,即seata实例信息。
解决方案:把grouplist的的所属方调整为和service.vgroupMapping
配置的seata集群名称一致;
${spring.application.name}-seata-service-group
;就博主程序而言,application.yml、file.conf配置如下:
1> application.yml:
spring:
application:
name: trade-center
2> file.conf关键配置:
seata.tx-service-group
就博主程序而言,application.yml、file.conf配置如下:
1> application.yml:
spring:
application:
name: trade-center
seata:
# tx-service-group的值一定要和file.conf中service.vgroupMapping配置对应上
tx-service-group: saint_trade_tx_group
或者使用:
spring:
application:
name: trade-center
cloud:
alibaba:
seata:
# tx-service-group的值一定要和file.conf中service.vgroupMapping配置对应上
tx-service-group: saint_trade_tx_group
2> file.conf关键配置:
我们注意到可以使用spring.cloud.alibaba.seata.tx-service-group
或 seata.tx-service-group
属性指定service.vgroupMapping
配置,为啥呢?
spring.cloud.alibaba.seata.tx-service-group
属于SpringCloudAlibabaConfiguration
类:
seata.tx-service-group
属性属于SeataProperties
类:
而SeataProperties
类又被注解@EnableConfigurationProperties(SpringCloudAlibabaConfiguration.class)
标注,所以会使SpringCloudAlibabaConfiguration
的配置生效;又SeataProperties
类中通过@Autowired
的方式组合了SpringCloudAlibabaConfiguration
,在通过getTxServiceGroup()
方法获取txServiceGroup
属性时如果SeataProperties
类自己没有配置txServiceGroup
,则从SpringCloudAlibabaConfiguration
中获取;
简单来说;就是优先取 seata.tx-service-group
属性值,没有则再取spring.cloud.alibaba.seata.tx-service-group
属性值。
seata-server和 项目程序 部署在不同的机器上时,可能会出现 can not connect to services-server
。
如果配置的 default.grouplist
= “192.168.7.254:8091”,则并不会生效,default.grouplist
读取的还是默认的127.0.0.1:8091
;
建议把seata集群名称调整为非dafault,例如:
service {
vgroupMapping.saint_trade_tx_group = "seata-server-sh"
seata-server-sh.grouplist = "127.0.0.1:8091"
}