"non-public interface is not defined by the given loader " when using input Projections for Mutations

[jfrense]

I am trying to use a projected payload interface for input mappings for a given mutation.

Given the following Schema:

type Mutation {
    updateOrderState(orderUpdateInput: OrderUpdateInput!): Order
}

input OrderUpdateInput {
    id: String

}

And the following mutation defined in the controller:

@MutationMapping
    public Optional<PurchaseOrder> updateOrderState(@Argument OrderUpdateInputProjection orderUpdateInput){


        return orderRepository.findById(UUID.fromString(orderUpdateInput.getId()));

    }


    @ProjectedPayload
    interface OrderUpdateInputProjection {

        @Value("#{target.id}")
        String getId();

    }

With the following graphql call on the client side:

mutation UpdateOrderState($input: OrderUpdateInput!) {
  updateOrderState(orderUpdateInput: $input) {
    id
  }
}

and the query variables defined:

{
  "input": {
   "id": "d2494427-6f14-44de-88f3-d29abae54fed"
  }
}

I get the following error response:

{
  "errors": [
    {
      "message": "non-public interface is not defined by the given loader",
      "locations": [
        {
          "line": 2,
          "column": 3
        }
      ],
      "path": [
        "updateOrderState"
      ],
      "extensions": {
        "classification": "INTERNAL_ERROR"
      }
    }
  ],
  "data": {
    "updateOrderState": null
  }
}

I am following this guidance from the docs : https://docs.spring.io/spring-graphql/docs/1.0.0-M5/reference/html/#controllers-schema-mapping-projectedpayload-argument

^^ is there something I'm missing to get this to work?

[mp911de]

Stack trace:

java.lang.IllegalArgumentException: non-public interface is not defined by the given loader
	at java.base/java.lang.reflect.Proxy$ProxyBuilder.mapToModule(Proxy.java:818)
	at java.base/java.lang.reflect.Proxy$ProxyBuilder.<init>(Proxy.java:651)
	at java.base/java.lang.reflect.Proxy.lambda$getProxyConstructor$1(Proxy.java:440)
	at java.base/jdk.internal.loader.AbstractClassLoaderValue$Memoizer.get(AbstractClassLoaderValue.java:329)
	at java.base/jdk.internal.loader.AbstractClassLoaderValue.computeIfAbsent(AbstractClassLoaderValue.java:205)
	at java.base/java.lang.reflect.Proxy.getProxyConstructor(Proxy.java:438)
	at java.base/java.lang.reflect.Proxy.newProxyInstance(Proxy.java:1037)
	at org.springframework.aop.framework.JdkDynamicAopProxy.getProxy(JdkDynamicAopProxy.java:126)
	at org.springframework.aop.framework.ProxyFactory.getProxy(ProxyFactory.java:110)
	at org.springframework.data.projection.ProxyProjectionFactory.createProjection(ProxyProjectionFactory.java:123)
	at org.springframework.data.projection.SpelAwareProxyProjectionFactory.createProjection(SpelAwareProxyProjectionFactory.java:45)
	at org.springframework.graphql.data.method.annotation.support.ProjectedPayloadMethodArgumentResolver.project(ProjectedPayloadMethodArgumentResolver.java:101)
	at org.springframework.graphql.data.method.annotation.support.ProjectedPayloadMethodArgumentResolver.resolveArgument(ProjectedPayloadMethodArgumentResolver.java:97)
	at org.springframework.graphql.data.method.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:83)
	at org.springframework.graphql.data.method.annotation.support.DataFetcherHandlerMethod.getMethodArgumentValues(DataFetcherHandlerMethod.java:169)
	at org.springframework.graphql.data.method.annotation.support.DataFetcherHandlerMethod.invoke(DataFetcherHandlerMethod.java:114)
	at org.springframework.graphql.data.method.annotation.support.AnnotatedControllerConfigurer$SchemaMappingDataFetcher.get(AnnotatedControllerConfigurer.java:449)
	at org.springframework.graphql.execution.ContextDataFetcherDecorator.get(ContextDataFetcherDecorator.java:67)
	at graphql.execution.instrumentation.dataloader.DataLoaderDispatcherInstrumentation.lambda$instrumentDataFetcher$0(DataLoaderDispatcherInstrumentation.java:87)
	at graphql.execution.ExecutionStrategy.fetchField(ExecutionStrategy.java:279)
	at graphql.execution.ExecutionStrategy.resolveFieldWithInfo(ExecutionStrategy.java:210)
	at graphql.execution.ExecutionStrategy.resolveField(ExecutionStrategy.java:182)
	at graphql.execution.AsyncSerialExecutionStrategy.lambda$execute$1(AsyncSerialExecutionStrategy.java:43)
	at graphql.execution.Async.eachSequentiallyImpl(Async.java:80)
	at graphql.execution.Async.eachSequentially(Async.java:69)
	at graphql.execution.AsyncSerialExecutionStrategy.execute(AsyncSerialExecutionStrategy.java:38)
	at graphql.execution.Execution.executeOperation(Execution.java:159)
	at graphql.execution.Execution.execute(Execution.java:105)
	at graphql.GraphQL.execute(GraphQL.java:613)
	at graphql.GraphQL.parseValidateAndExecute(GraphQL.java:538)
	at graphql.GraphQL.executeAsync(GraphQL.java:502)
	at org.springframework.graphql.execution.ExecutionGraphQlService.lambda$execute$2(ExecutionGraphQlService.java:80)
	at reactor.core.publisher.MonoDeferContextual.subscribe(MonoDeferContextual.java:47)
	at reactor.core.publisher.Mono.subscribe(Mono.java:4400)
	at reactor.core.publisher.Mono.subscribeWith(Mono.java:4515)
	at reactor.core.publisher.Mono.toFuture(Mono.java:4920)
	at org.springframework.core.ReactiveAdapterRegistry$ReactorRegistrar.lambda$registerAdapters$5(ReactiveAdapterRegistry.java:265)
	at org.springframework.core.ReactiveAdapter.fromPublisher(ReactiveAdapter.java:121)
	at org.springframework.web.servlet.function.DefaultAsyncServerResponse.create(DefaultAsyncServerResponse.java:188)
	at org.springframework.web.servlet.function.ServerResponse.async(ServerResponse.java:239)
	at org.springframework.graphql.web.webmvc.GraphQlHttpHandler.handleRequest(GraphQlHttpHandler.java:95)
	at org.springframework.web.servlet.function.support.HandlerFunctionAdapter.handle(HandlerFunctionAdapter.java:106)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1067)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:681)
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
	at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:540)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:359)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:889)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1735)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.base/java.lang.Thread.run(Thread.java:833)

[mp911de]

We're now using the correct classloader instead of the contextual class loader to get proper access to the code base that exposes the interface.