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.CallOptions;
  import io.grpc.Channel;
  import io.grpc.ClientCall;
  import io.grpc.ClientInterceptor;
  import io.grpc.ForwardingClientCall;
  import io.grpc.Metadata;
  import io.grpc.MethodDescriptor;
  import jakarta.inject.Named;
  import jakarta.inject.Singleton;
  
  @Singleton
  @Named
  public class CustomClientInterceptor implements ClientInterceptor {
      public static final Metadata.Key<String> PING_ID = Metadata.Key.of("pingId", Metadata.ASCII_STRING_MARSHALLER);
  
      public <ReqT, RespT> ClientCall<ReqT, RespT> interceptCall(MethodDescriptor<ReqT, RespT> method, CallOptions callOptions,
              Channel next) {
          return new ForwardingClientCall.SimpleForwardingClientCall<>(next.newCall(method, callOptions)) {
              @Override
              public void start(Listener<RespT> responseListener, Metadata headers) {
                  headers.put(PING_ID, "100");
                  super.start(responseListener, headers);
              }
          };
      }
  }
  