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 java.util.List;
  
  import io.grpc.ManagedChannel;
  import io.grpc.ManagedChannelBuilder;
  import io.grpc.Server;
  import org.apache.camel.builder.RouteBuilder;
  import org.apache.camel.test.AvailablePortFinder;
  import org.apache.camel.test.junit5.CamelTestSupport;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.BeforeEach;
  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.assertNotNull;
  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 GrpcConsumerServerInterceptorTest extends CamelTestSupport {
  
      private static final Logger LOG = LoggerFactory.getLogger(GrpcConsumerServerInterceptorTest.class);
  
      private static final int GRPC_REQUEST_INTERCEPT_TEST_PORT = AvailablePortFinder.getNextAvailable();
      private static final int GRPC_REQUEST_NO_INTERCEPT_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 GrpcMockServerInterceptor mockServerInterceptor = mock(GrpcMockServerInterceptor.class);
      private final GrpcMockServerInterceptor mockServerInterceptor2 = mock(GrpcMockServerInterceptor.class);
  
      private ManagedChannel interceptRequestChannel;
      private ManagedChannel nointerceptRequestChannel;
      private PingPongGrpc.PingPongBlockingStub interceptBlockingStub;
      private PingPongGrpc.PingPongBlockingStub nointerceptBlockingStub;
  
      @BeforeEach
      public void startGrpcChannels() {
          interceptRequestChannel
                  = ManagedChannelBuilder.forAddress("localhost", GRPC_REQUEST_INTERCEPT_TEST_PORT).usePlaintext().build();
          nointerceptRequestChannel
                  = ManagedChannelBuilder.forAddress("localhost", GRPC_REQUEST_NO_INTERCEPT_TEST_PORT).usePlaintext().build();
          interceptBlockingStub = PingPongGrpc.newBlockingStub(interceptRequestChannel);
          nointerceptBlockingStub = PingPongGrpc.newBlockingStub(nointerceptRequestChannel);
      }
  
      @AfterEach
      public void stopGrpcChannels() {
          interceptRequestChannel.shutdown().shutdownNow();
          nointerceptRequestChannel.shutdown().shutdownNow();
      }
  
      @Test
      public void testServerInterceptors() throws Exception {
          when(mockServerInterceptor.interceptCall(any(), any(), any())).thenCallRealMethod();
          when(mockServerInterceptor2.interceptCall(any(), any(), any())).thenCallRealMethod();
          LOG.info("gRPC pingSyncSync method blocking test start");
          PingRequest pingRequest
                  = PingRequest.newBuilder().setPingName(GRPC_TEST_PING_VALUE).setPingId(GRPC_TEST_PING_ID).build();
          PongResponse pongResponse = interceptBlockingStub.pingSyncSync(pingRequest);
  
          assertNotNull(pongResponse);
          assertEquals(GRPC_TEST_PING_ID, pongResponse.getPongId());
          assertEquals(GRPC_TEST_PING_VALUE + GRPC_TEST_PONG_VALUE, pongResponse.getPongName());
          verify(mockServerInterceptor, times(1)).interceptCall(any(), any(), any());
          verify(mockServerInterceptor2, times(1)).interceptCall(any(), any(), any());
      }
  
      @Test
      public void testNoAutoDiscover() throws Exception {
          when(mockServerInterceptor.interceptCall(any(), any(), any())).thenCallRealMethod();
          when(mockServerInterceptor2.interceptCall(any(), any(), any())).thenCallRealMethod();
          LOG.info("gRPC pingSyncSync method blocking test start");
          PingRequest pingRequest
                  = PingRequest.newBuilder().setPingName(GRPC_TEST_PING_VALUE).setPingId(GRPC_TEST_PING_ID).build();
          PongResponse pongResponse = nointerceptBlockingStub.pingSyncSync(pingRequest);
  
          assertNotNull(pongResponse);
          assertEquals(GRPC_TEST_PING_ID, pongResponse.getPongId());
          assertEquals(GRPC_TEST_PING_VALUE + GRPC_TEST_PONG_VALUE, pongResponse.getPongName());
          verify(mockServerInterceptor, times(0)).interceptCall(any(), any(), any());
          verify(mockServerInterceptor2, times(0)).interceptCall(any(), any(), any());
      }
  
      @Override
      protected RouteBuilder createRouteBuilder() throws Exception {
          context.getRegistry().bind("grpcMockServerInterceptor", mockServerInterceptor);
          context.getRegistry().bind("grpcMockServerInterceptor2", mockServerInterceptor2);
          return new RouteBuilder() {
              @Override
              public void configure() {
                  from("grpc://localhost:" + GRPC_REQUEST_INTERCEPT_TEST_PORT
                       + "/org.apache.camel.component.grpc.PingPong?synchronous=true&consumerStrategy=AGGREGATION")
                          .bean(new GrpcMessageBuilder(), "buildPongResponse");
  
                  from("grpc://localhost:" + GRPC_REQUEST_NO_INTERCEPT_TEST_PORT
                       + "/org.apache.camel.component.grpc.PingPong?synchronous=true&consumerStrategy=AGGREGATION"
                       + "&autoDiscoverServerInterceptors=false")
                          .bean(new GrpcMessageBuilder(), "buildPongResponse");
              }
          };
      }
  
      static class GrpcMessageBuilder {
          public PongResponse buildPongResponse(PingRequest pingRequest) {
              return PongResponse.newBuilder().setPongName(pingRequest.getPingName() + GRPC_TEST_PONG_VALUE)
                      .setPongId(pingRequest.getPingId()).build();
          }
  
          public PongResponse buildAsyncPongResponse(List<PingRequest> pingRequests) {
              return PongResponse.newBuilder().setPongName(pingRequests.get(0).getPingName() + GRPC_TEST_PONG_VALUE)
                      .setPongId(pingRequests.get(0).getPingId()).build();
          }
      }
  }
  