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grpc / grpc-java

The Java gRPC implementation. HTTP/2 based RPC
https://grpc.io/docs/languages/java/
Apache License 2.0
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io.grpc.StatusRuntimeException: UNAVAILABLE: Could not find server: rpc-server #11626

Closed aLoHaha1 closed 6 days ago

aLoHaha1 commented 1 month ago

I am trying to implement a simple springboot integrated grpc, when client receive message from web, it can't find grpc-server which I declare in application.yml and server seems haven't received anything.

related enviroment

springboot : 3.3.4 java : 17 depdency :

        <dependency>
            <groupId>io.grpc</groupId>
            <artifactId>grpc-netty-shaded</artifactId>
            <version>1.67.1</version>
        </dependency>

        <dependency>
            <groupId>io.grpc</groupId>
            <artifactId>grpc-protobuf</artifactId>
            <version>1.67.1</version>
        </dependency>

        <dependency>
            <groupId>io.grpc</groupId>
            <artifactId>grpc-stub</artifactId>
            <version>1.67.1</version>
        </dependency>

        <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>annotations-api</artifactId>
            <version>6.0.53</version>
        </dependency>
client side : 
        <dependency>
            <groupId>net.devh</groupId>
            <artifactId>grpc-client-spring-boot-starter</artifactId>
            <version>2.14.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>net.devh</groupId>
            <artifactId>grpc-server-spring-boot-autoconfigure</artifactId>
            <version>2.14.0.RELEASE</version>
            <scope>compile</scope>
        </dependency>
server side : 
        <dependency>
            <groupId>net.devh</groupId>
            <artifactId>grpc-server-spring-boot-starter</artifactId>
            <version>2.14.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>net.devh</groupId>
            <artifactId>grpc-client-spring-boot-autoconfigure</artifactId>
            <version>2.14.0.RELEASE</version>
            <scope>compile</scope>
        </dependency>

HelloController

package com.example.controller;

import com.example.HelloProto;
import com.example.HelloServiceGrpc;
import net.devh.boot.grpc.client.inject.GrpcClient;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class HelloController {

    @GrpcClient("rpc-server")
    private HelloServiceGrpc.HelloServiceBlockingStub stub;

    @RequestMapping("/test1")
    public String helloTest(String name) {
        System.out.println(name);

        HelloProto.HelloRequest request = HelloProto.HelloRequest.newBuilder().setName(name).build();
        HelloProto.HelloResponse response = stub.hello(request);

        return response.getResult();
    }
}

application.yml (client)

spring:
  application:
    name: client
grpc:
  client:
    rpc-server:
      address: 'static://127.0.0.1:9000'
      negotiation-type: plaintext

HelloServiceImpl


package com.example.service;

import com.example.HelloProto;
import com.example.HelloServiceGrpc;
import io.grpc.stub.StreamObserver;
import net.devh.boot.grpc.server.service.GrpcService;

@GrpcService
public class HelloServiceImpl extends HelloServiceGrpc.HelloServiceImplBase {
    @Override
    public void hello(HelloProto.HelloRequest request, StreamObserver<HelloProto.HelloResponse> responseObserver) {
        String name = request.getName();
        System.out.println("name is " + name);

        HelloProto.HelloResponse response = HelloProto.HelloResponse.newBuilder().setResult("this is result").build();

        responseObserver.onNext(response);
        responseObserver.onCompleted();
    }
}

ServerApplication

package com.example;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

import java.io.IOException;

@SpringBootApplication
public class ServerApplication {

    public static void main(String[] args) throws IOException {

        SpringApplication.run(ServerApplication.class, args);
        System.in.read();
    }
}

application.yml (server)

spring:
  application:
    name: server
  main:
    web-application-type: none
grpc:
  server:
    port: 9000

erro information

2024-10-20T09:47:57.494+08:00 ERROR 4764 --- [api] [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed: io.grpc.StatusRuntimeException: UNAVAILABLE: Could not find server: rpc-server] with root cause

io.grpc.StatusRuntimeException: UNAVAILABLE: Could not find server: rpc-server
    at io.grpc.stub.ClientCalls.toStatusRuntimeException(ClientCalls.java:268) ~[grpc-stub-1.67.1.jar:1.67.1]
    at io.grpc.stub.ClientCalls.getUnchecked(ClientCalls.java:249) ~[grpc-stub-1.67.1.jar:1.67.1]
    at io.grpc.stub.ClientCalls.blockingUnaryCall(ClientCalls.java:167) ~[grpc-stub-1.67.1.jar:1.67.1]
    at com.example.HelloServiceGrpc$HelloServiceBlockingStub.hello(HelloServiceGrpc.java:160) ~[classes/:na]
    at com.example.controller.HelloController.helloTest(HelloController.java:20) ~[classes/:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[na:na]
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
    at java.base/java.lang.reflect.Method.invoke(Method.java:568) ~[na:na]
    at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:255) ~[spring-web-6.1.13.jar:6.1.13]
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:188) ~[spring-web-6.1.13.jar:6.1.13]
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:118) ~[spring-webmvc-6.1.13.jar:6.1.13]
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:926) ~[spring-webmvc-6.1.13.jar:6.1.13]
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:831) ~[spring-webmvc-6.1.13.jar:6.1.13]
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-6.1.13.jar:6.1.13]
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1089) ~[spring-webmvc-6.1.13.jar:6.1.13]
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:979) ~[spring-webmvc-6.1.13.jar:6.1.13]
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014) ~[spring-webmvc-6.1.13.jar:6.1.13]
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:903) ~[spring-webmvc-6.1.13.jar:6.1.13]
    at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:564) ~[tomcat-embed-core-10.1.30.jar:6.0]
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:885) ~[spring-webmvc-6.1.13.jar:6.1.13]
    at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658) ~[tomcat-embed-core-10.1.30.jar:6.0]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:195) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) ~[tomcat-embed-websocket-10.1.30.jar:10.1.30]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:164) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-6.1.13.jar:6.1.13]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.13.jar:6.1.13]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:164) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-6.1.13.jar:6.1.13]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.13.jar:6.1.13]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:164) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-6.1.13.jar:6.1.13]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.13.jar:6.1.13]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:164) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:483) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:115) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:344) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:384) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:905) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1741) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1190) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:63) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
    at java.base/java.lang.Thread.run(Thread.java:833) ~[na:na]
kannanjgithub commented 1 month ago

The error message seen in the stacktrace that was received by the client

Could not find server: rpc-server

came from the server. You should check the server side to see if you find any more details there.