content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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.
   */
  package org.apache.camel.component.grpc;
  
  import io.grpc.Server;
  import io.grpc.ServerBuilder;
  import io.grpc.stub.StreamObserver;
  import org.apache.camel.builder.RouteBuilder;
  import org.apache.camel.test.AvailablePortFinder;
  import org.apache.camel.test.junit5.CamelTestSupport;
  import org.junit.jupiter.api.AfterAll;
  import org.junit.jupiter.api.BeforeAll;
  import org.junit.jupiter.api.Test;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.mockito.ArgumentMatchers.any;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.times;
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.when;
  
  public class GrpcProducerClientInterceptorTest extends CamelTestSupport {
  
      private static final Logger LOG = LoggerFactory.getLogger(GrpcProducerClientInterceptorTest.class);
  
      private static final int GRPC_TEST_PORT = AvailablePortFinder.getNextAvailable();
      private static final int GRPC_TEST_PING_ID = 1;
      private static final String GRPC_TEST_PING_VALUE = "PING";
      private static final String GRPC_TEST_PONG_VALUE = "PONG";
  
      private static Server grpcServer;
      private final GrpcMockClientInterceptor mockClientInterceptor = mock(GrpcMockClientInterceptor.class);
      private final GrpcMockClientInterceptor mockClientInterceptor2 = mock(GrpcMockClientInterceptor.class);
  
      @BeforeAll
      public static void startGrpcServer() throws Exception {
          grpcServer = ServerBuilder.forPort(GRPC_TEST_PORT).addService(new GrpcProducerClientInterceptorTest.PingPongImpl())
                  .build().start();
          LOG.info("gRPC server started on port {}", GRPC_TEST_PORT);
      }
  
      @AfterAll
      public static void stopGrpcServer() {
          if (grpcServer != null) {
              grpcServer.shutdown();
              LOG.info("gRPC server stopped");
          }
      }
  
      @Test
      public void testClientInterceptors() {
          when(mockClientInterceptor.interceptCall(any(), any(), any())).thenCallRealMethod();
          when(mockClientInterceptor2.interceptCall(any(), any(), any())).thenCallRealMethod();
          LOG.info("gRPC PingSyncSync method test start");
          // Testing simple sync method invoke with host and port parameters
          PingRequest pingRequest
                  = PingRequest.newBuilder().setPingName(GRPC_TEST_PING_VALUE).setPingId(GRPC_TEST_PING_ID).build();
          template.requestBody("direct:grpc-interceptor", pingRequest);
          verify(mockClientInterceptor, times(1)).interceptCall(any(), any(), any());
          verify(mockClientInterceptor2, times(1)).interceptCall(any(), any(), any());
      }
  
      @Test
      public void testNoAutoDiscover() throws Exception {
          GrpcComponent component = context.getComponent("grpc", GrpcComponent.class);
          GrpcEndpoint endpoint = (GrpcEndpoint) component.createEndpoint("grpc://localhost:" + GRPC_TEST_PORT
                                                                          + "/org.apache.camel.component.grpc"
                                                                          + ".PingPong?method=pingSyncSync&autoDiscoverClientInterceptors=false");
  
          assertFalse(endpoint.getConfiguration().isAutoDiscoverClientInterceptors());
          assertEquals(0, endpoint.getConfiguration().getClientInterceptors().size());
      }
  
      @Override
      protected RouteBuilder createRouteBuilder() {
          // This needs to be here because if it's any earlier the context won't be set up and if it's any later, we'll
          // put it in the registry after the component is already set up.
          context.getRegistry().bind("grpcMockClientInterceptor", mockClientInterceptor);
          context.getRegistry().bind("grpcMockClientInterceptor2", mockClientInterceptor2);
          return new RouteBuilder() {
              @Override
              public void configure() {
                  from("direct:grpc-interceptor")
                          .to("grpc://localhost:" + GRPC_TEST_PORT
                              + "/org.apache.camel.component.grpc"
                              + ".PingPong?method=pingSyncSync");
              }
          };
      }
  
      /**
       * Test gRPC PingPong server implementation
       */
      static class PingPongImpl extends PingPongGrpc.PingPongImplBase {
          @Override
          public void pingSyncSync(PingRequest request, StreamObserver<PongResponse> responseObserver) {
              LOG.info("gRPC server received data from PingPong service PingId={} PingName={}", request.getPingId(),
                      request.getPingName());
              PongResponse response = PongResponse.newBuilder().setPongName(request.getPingName() + GRPC_TEST_PONG_VALUE)
                      .setPongId(request.getPingId()).build();
              responseObserver.onNext(response);
              responseObserver.onCompleted();
          }
      }
  
  }
  