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.quarkus.component.grpc.it;
  
  import io.grpc.Context;
  import io.grpc.Contexts;
  import io.grpc.Metadata;
  import io.grpc.ServerCall;
  import io.grpc.ServerCallHandler;
  import io.grpc.ServerInterceptor;
  import jakarta.inject.Named;
  import jakarta.inject.Singleton;
  
  @Singleton
  @Named
  public class CustomServerInterceptor implements ServerInterceptor {
      public static final Context.Key<String> RESPONSE_KEY = Context.key("consumer-response");
      public static final Context.Key<String> PING_ID_CONTEXT_KEY = Context.key("pingId");
      public static final Metadata.Key<String> PING_ID_METADATA_KEY = Metadata.Key.of("pingId", Metadata.ASCII_STRING_MARSHALLER);
  
      @Override
      public <ReqT, RespT> ServerCall.Listener<ReqT> interceptCall(
              ServerCall<ReqT, RespT> call,
              Metadata headers,
              ServerCallHandler<ReqT, RespT> next) {
          Context context = Context.current()
                  .withValue(PING_ID_CONTEXT_KEY, headers.get(PING_ID_METADATA_KEY))
                  .withValue(RESPONSE_KEY, " PONG");
          return Contexts.interceptCall(context, call, headers, next);
      }
  }
  