You are viewing a plain text version of this content. The canonical link for it is here.
Posted to notifications@dubbo.apache.org by GitBox <gi...@apache.org> on 2022/09/06 03:45:24 UTC
[GitHub] [dubbo] uncarbon97 opened a new issue, #10551: The "rest protocol"'s purpose in Dubbo 3.1.x? 新增加了提供 rest protocol 的意义是？
uncarbon97 opened a new issue, #10551:
URL: https://github.com/apache/dubbo/issues/10551
<!-- If you need to report a security issue please visit https://github.com/apache/dubbo/security/policy -->
- [-] I have searched the [issues](https://github.com/apache/dubbo/issues) of this repository and believe that this is not a duplicate.
## Ask your question here
When I upgraded from 3.0.9 to 3.1.0, I found the following error when starting the project:
当我从3.0.9升级到3.1.0后，启动项目时发现以下报错：
```
2022-09-06 11:08:17.323 [main] ERROR o.a.d.r.client.ServiceDiscoveryRegistryDirectory - Unsupported protocol rest in notified url: DefaultServiceInstance{serviceName='sys-service', host='192.168.1.55', port=20001, enabled=true, healthy=true, metadata={preserved.register.source=SPRING_CLOUD}}, null from registry 【REGISTRY IP ADDRESS】 to consumer 192.168.1.55, supported protocol: [dubbo, injvm, mock, registry, service-discovery-registry, tri]
java.lang.IllegalStateException: Unsupported protocol rest in notified url: DefaultServiceInstance{serviceName='sys-service', host='192.168.1.55', port=20001, enabled=true, healthy=true, metadata={preserved.register.source=SPRING_CLOUD}}, null from registry 【REGISTRY IP ADDRESS】 to consumer 192.168.1.55, supported protocol: [dubbo, injvm, mock, registry, service-discovery-registry, tri]
at org.apache.dubbo.registry.client.ServiceDiscoveryRegistryDirectory.toInvokers(ServiceDiscoveryRegistryDirectory.java:300)
at org.apache.dubbo.registry.client.ServiceDiscoveryRegistryDirectory.refreshInvoker(ServiceDiscoveryRegistryDirectory.java:251)
at org.apache.dubbo.registry.client.ServiceDiscoveryRegistryDirectory.refreshOverrideAndInvoker(ServiceDiscoveryRegistryDirectory.java:179)
at org.apache.dubbo.registry.client.ServiceDiscoveryRegistryDirectory.notify(ServiceDiscoveryRegistryDirectory.java:173)
at org.apache.dubbo.registry.client.event.listener.ServiceInstancesChangedListener.addListenerAndNotify(ServiceInstancesChangedListener.java:235)
at org.apache.dubbo.registry.client.ServiceDiscoveryRegistry.subscribeURLs(ServiceDiscoveryRegistry.java:325)
at org.apache.dubbo.registry.client.ServiceDiscoveryRegistry.doSubscribe(ServiceDiscoveryRegistry.java:216)
at org.apache.dubbo.registry.client.ServiceDiscoveryRegistry.subscribe(ServiceDiscoveryRegistry.java:184)
at org.apache.dubbo.registry.ListenerRegistryWrapper.subscribe(ListenerRegistryWrapper.java:111)
at org.apache.dubbo.registry.integration.DynamicDirectory.subscribe(DynamicDirectory.java:180)
at org.apache.dubbo.registry.client.ServiceDiscoveryRegistryDirectory.subscribe(ServiceDiscoveryRegistryDirectory.java:124)
at org.apache.dubbo.registry.integration.RegistryProtocol.doCreateInvoker(RegistryProtocol.java:571)
at org.apache.dubbo.registry.integration.InterfaceCompatibleRegistryProtocol.getServiceDiscoveryInvoker(InterfaceCompatibleRegistryProtocol.java:65)
at org.apache.dubbo.registry.client.migration.MigrationInvoker.refreshServiceDiscoveryInvoker(MigrationInvoker.java:436)
at org.apache.dubbo.registry.client.migration.MigrationInvoker.migrateToApplicationFirstInvoker(MigrationInvoker.java:244)
at org.apache.dubbo.registry.client.migration.MigrationRuleHandler.refreshInvoker(MigrationRuleHandler.java:73)
at org.apache.dubbo.registry.client.migration.MigrationRuleHandler.doMigrate(MigrationRuleHandler.java:57)
at org.apache.dubbo.registry.client.migration.MigrationRuleListener.onRefer(MigrationRuleListener.java:243)
at org.apache.dubbo.registry.integration.RegistryProtocol.interceptInvoker(RegistryProtocol.java:536)
at org.apache.dubbo.registry.integration.RegistryProtocol.doRefer(RegistryProtocol.java:506)
at org.apache.dubbo.registry.integration.RegistryProtocol.refer(RegistryProtocol.java:488)
at org.apache.dubbo.qos.protocol.QosProtocolWrapper.refer(QosProtocolWrapper.java:80)
at org.apache.dubbo.rpc.protocol.ProtocolListenerWrapper.refer(ProtocolListenerWrapper.java:74)
at org.apache.dubbo.rpc.cluster.filter.ProtocolFilterWrapper.refer(ProtocolFilterWrapper.java:71)
at org.apache.dubbo.rpc.protocol.ProtocolSerializationWrapper.refer(ProtocolSerializationWrapper.java:52)
at org.apache.dubbo.rpc.Protocol$Adaptive.refer(Protocol$Adaptive.java)
at org.apache.dubbo.config.ReferenceConfig.createInvokerForRemote(ReferenceConfig.java:600)
at org.apache.dubbo.config.ReferenceConfig.createProxy(ReferenceConfig.java:441)
at org.apache.dubbo.config.ReferenceConfig.init(ReferenceConfig.java:295)
at org.apache.dubbo.config.ReferenceConfig.get(ReferenceConfig.java:227)
at org.apache.dubbo.config.utils.SimpleReferenceCache.get(SimpleReferenceCache.java:129)
at org.apache.dubbo.config.deploy.DefaultModuleDeployer.lambda$referServices$6(DefaultModuleDeployer.java:383)
at java.base/java.util.concurrent.ConcurrentHashMap$ValuesView.forEach(ConcurrentHashMap.java:4780)
at org.apache.dubbo.config.deploy.DefaultModuleDeployer.referServices(DefaultModuleDeployer.java:363)
at org.apache.dubbo.config.deploy.DefaultModuleDeployer.start(DefaultModuleDeployer.java:154)
at org.apache.dubbo.config.spring.context.DubboDeployApplicationListener.onContextRefreshedEvent(DubboDeployApplicationListener.java:111)
at org.apache.dubbo.config.spring.context.DubboDeployApplicationListener.onApplicationEvent(DubboDeployApplicationListener.java:100)
at org.apache.dubbo.config.spring.context.DubboDeployApplicationListener.onApplicationEvent(DubboDeployApplicationListener.java:45)
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:176)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:169)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:421)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:378)
at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:938)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:586)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:308)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295)
at cc.uncarbon.module.SaasApiApplication.main(SaasApiApplication.java:10)
```
However port 20001 is the HTTP port of the downstream microservice
然而端口20001是下游微服务的HTTP端口
After tracking the code I found this:
跟踪代码后我发现：
[](https://imgse.com/i/v7gM3F)
The provider's configuration file does not actively set the rest protocol. This * should be actively added when registering with the registry. There seems to be no usage found in the feature announcement of version 3.1.0, please advise
provider的配置文件中并没有主动设置 rest 协议，这个*应该是注册到注册中心时主动添加的。3.1.0版本的feature公告中好像没有发现用法，请指教
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: notifications-unsubscribe@dubbo.apache.org.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: notifications-unsubscribe@dubbo.apache.org
For additional commands, e-mail: notifications-help@dubbo.apache.org
[GitHub] [dubbo] uncarbon97 commented on issue #10551: The "rest protocol"'s purpose in Dubbo 3.1.x? 新增加了提供 rest protocol 的意义是？
Posted by GitBox <gi...@apache.org>.
uncarbon97 commented on issue #10551:
URL: https://github.com/apache/dubbo/issues/10551#issuecomment-1237811289
> > （这里留一个疑问，是否引入 rest 扩展后，dubbo 可以只使用类似 Feign 的 HTTP RPC，而完全不使用 dubbo 主打的 dubbo/triple 协议二进制 RPC？）
>
> Dubbo 作为服务端可以发布 rest 服务，客户端支持所有标准 rest 协议支持的 SDK（Dubbo、Feign、okhttp、restTemplate 等）、Dubbo 也可以作为客户端消费发布了标准 rest 协议的服务，服务端支持所有标准 rest server（Dubbo、spring web、tomcat、jetty等）
了解了，原来现在 dubbo 也可以支持 HTTP 的 RPC 了呀
现在还得尝试解决引入 `spring-boot-starter-actuator` 探针后，需要 web 监听，又不想自动以 rest 协议注册到 Nacos 上……
（如果没有其他需要订正和为后来者补充的话，烦请关闭该issue。）
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: notifications-unsubscribe@dubbo.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: notifications-unsubscribe@dubbo.apache.org
For additional commands, e-mail: notifications-help@dubbo.apache.org
Re: [I] The "rest protocol"'s purpose in Dubbo 3.1.x? 新增加了提供 rest protocol 的意义是？ [dubbo]
Posted by "haopangang (via GitHub)" <gi...@apache.org>.
haopangang commented on issue #10551:
URL: https://github.com/apache/dubbo/issues/10551#issuecomment-1812152219
能不换spring.cloud.nacos.discovery.service 这个参数吗？改了这个参数，影响比较大的呀。为啥我改了dubbo的application.name。也不行呢？
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: notifications-unsubscribe@dubbo.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: notifications-unsubscribe@dubbo.apache.org
For additional commands, e-mail: notifications-help@dubbo.apache.org
[GitHub] [dubbo] AlbumenJ commented on issue #10551: The "rest protocol"'s purpose in Dubbo 3.1.x? 新增加了提供 rest protocol 的意义是？
Posted by GitBox <gi...@apache.org>.
AlbumenJ commented on issue #10551:
URL: https://github.com/apache/dubbo/issues/10551#issuecomment-1237681597
这个异常检测到不支持 rest 协议后回自动忽略这个地址，但是在 3.0 升级到应用级服务发现之后如果存在和 Spring cloud 同名的应用且提供的功能是不一样的最好需要重命名下，否则很容易出现调用错的问题。从日志中看应用名应该都是`sys-service`。
例子：Dubbo 发布了 demo-application 这个应用，Spring Cloud 也发布了demo-application 这个服务，Spring Cloud 通过 Feign 或者 restTemplate 调用的时候只会识别 demo-application 这个应用，最终流量会错误地调用到 Dubbo 上来（如果这不是预期）
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: notifications-unsubscribe@dubbo.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: notifications-unsubscribe@dubbo.apache.org
For additional commands, e-mail: notifications-help@dubbo.apache.org
[GitHub] [dubbo] uncarbon97 commented on issue #10551: The "rest protocol"'s purpose in Dubbo 3.1.x? 新增加了提供 rest protocol 的意义是？
Posted by GitBox <gi...@apache.org>.
uncarbon97 commented on issue #10551:
URL: https://github.com/apache/dubbo/issues/10551#issuecomment-1237716299
谢谢大佬的解答，经过试验比较 `3.0.11` 与 `3.1.0` 版本后理解了这个设计
`sys-service` 使用了 `spring-boot-starter-web`，启动后将自身注册到 Spring Cloud 注册中心（我使用的是 Nacos），端口为 HTTP 端口，protocol=rest
而 dubbo 也用 `sys-service` 的名头注册到了 Nacos 上，端口为另一个，protocol=dubbo
上游从注册中心拉取后能正确处理 `protocol=dubbo`，而处理`protocol=rest`则会抛出异常（未引入相应支持扩展）
（这里留一个疑问，是否引入 rest 扩展后，dubbo 可以做到类似 Feign 的 HTTP RPC，而非 dubbo 主打的 `dubbo/triple` 协议二进制 RPC？）
如果没有其他需要订正和为后来者补充的话，烦请关闭该issue。
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: notifications-unsubscribe@dubbo.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: notifications-unsubscribe@dubbo.apache.org
For additional commands, e-mail: notifications-help@dubbo.apache.org
[GitHub] [dubbo] uncarbon97 closed issue #10551: The "rest protocol"'s purpose in Dubbo 3.1.x? 新增加了提供 rest protocol 的意义是？
Posted by GitBox <gi...@apache.org>.
uncarbon97 closed issue #10551: The "rest protocol"'s purpose in Dubbo 3.1.x? 新增加了提供 rest protocol 的意义是？
URL: https://github.com/apache/dubbo/issues/10551
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: notifications-unsubscribe@dubbo.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: notifications-unsubscribe@dubbo.apache.org
For additional commands, e-mail: notifications-help@dubbo.apache.org
[GitHub] [dubbo] AlbumenJ commented on issue #10551: The "rest protocol"'s purpose in Dubbo 3.1.x? 新增加了提供 rest protocol 的意义是？
Posted by GitBox <gi...@apache.org>.
AlbumenJ commented on issue #10551:
URL: https://github.com/apache/dubbo/issues/10551#issuecomment-1237884714
> 现在还得尝试解决引入 spring-boot-starter-actuator 探针后，需要 web 监听，又不想自动以 rest 协议注册到 Nacos 上……
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: notifications-unsubscribe@dubbo.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: notifications-unsubscribe@dubbo.apache.org
For additional commands, e-mail: notifications-help@dubbo.apache.org
[GitHub] [dubbo] AlbumenJ commented on issue #10551: The "rest protocol"'s purpose in Dubbo 3.1.x? 新增加了提供 rest protocol 的意义是？
Posted by GitBox <gi...@apache.org>.
AlbumenJ commented on issue #10551:
URL: https://github.com/apache/dubbo/issues/10551#issuecomment-1237678733
这个是应用级服务发现与 Spring Cloud 互通的特性。
这个功能生效的前提是当前初始化的接口的应用名在注册中心存在对应的 Spring Cloud 服务。（如 org.apache.DemoService 接口对应 demo-application 应用名，注册中心存在通过 Spring Cloud 注册的 demo-application 应用）
Dubbo 会按照 Spring Cloud 的处理方式读取这部分的服务信息，载入到对应所有接口上。
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: notifications-unsubscribe@dubbo.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: notifications-unsubscribe@dubbo.apache.org
For additional commands, e-mail: notifications-help@dubbo.apache.org
[GitHub] [dubbo] AlbumenJ commented on issue #10551: The "rest protocol"'s purpose in Dubbo 3.1.x? 新增加了提供 rest protocol 的意义是？
Posted by GitBox <gi...@apache.org>.
AlbumenJ commented on issue #10551:
URL: https://github.com/apache/dubbo/issues/10551#issuecomment-1237781146
> （这里留一个疑问，是否引入 rest 扩展后，dubbo 可以只使用类似 Feign 的 HTTP RPC，而完全不使用 dubbo 主打的 dubbo/triple 协议二进制 RPC？）
Dubbo 作为服务端可以发布 rest 服务，客户端支持所有标准 rest 协议支持的 SDK（Dubbo、Feign、okhttp、restTemplate 等）、Dubbo 也可以作为客户端消费发布了标准 rest 协议的服务，服务端支持所有标准 rest server（Dubbo、spring web、tomcat、jetty等）
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: notifications-unsubscribe@dubbo.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: notifications-unsubscribe@dubbo.apache.org
For additional commands, e-mail: notifications-help@dubbo.apache.org
[GitHub] [dubbo] uncarbon97 commented on issue #10551: The "rest protocol"'s purpose in Dubbo 3.1.x? 新增加了提供 rest protocol 的意义是？
Posted by GitBox <gi...@apache.org>.
uncarbon97 commented on issue #10551:
URL: https://github.com/apache/dubbo/issues/10551#issuecomment-1237627133
code position 代码位置
org.apache.dubbo.registry.client.event.listener.ServiceInstancesChangedListener#getAddresses
code of version 3.0.11 3.0.11代码
https://github.com/apache/dubbo/blob/8354db26cfd5518bfe177d5e12c045ac003cac54/dubbo-registry/dubbo-registry-api/src/main/java/org/apache/dubbo/registry/client/event/listener/ServiceInstancesChangedListener.java
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: notifications-unsubscribe@dubbo.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: notifications-unsubscribe@dubbo.apache.org
For additional commands, e-mail: notifications-help@dubbo.apache.org
[GitHub] [dubbo] uncarbon97 commented on issue #10551: The "rest protocol"'s purpose in Dubbo 3.1.x? 新增加了提供 rest protocol 的意义是？
Posted by GitBox <gi...@apache.org>.
uncarbon97 commented on issue #10551:
URL: https://github.com/apache/dubbo/issues/10551#issuecomment-1237897173
> > 现在还得尝试解决引入 spring-boot-starter-actuator 探针后，需要 web 监听，又不想自动以 rest 协议注册到 Nacos 上……
>
> 换个应用名就行了
=. = 还真的可以
`spring.cloud.nacos.discovery.service=${spring.application.name}-dubbo`
谢谢！
（如果没有其他需要订正和为后来者补充的话，烦请直接关闭该issue。）
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: notifications-unsubscribe@dubbo.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: notifications-unsubscribe@dubbo.apache.org
For additional commands, e-mail: notifications-help@dubbo.apache.org