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.kafka.clients;
  
  import org.apache.kafka.common.message.RequestHeaderData;
  import org.apache.kafka.common.protocol.ApiKeys;
  import org.apache.kafka.common.requests.AbstractRequest;
  import org.apache.kafka.common.requests.RequestHeader;
  
  /**
   * A request being sent to the server. This holds both the network send as well as the client-level metadata.
   */
  public final class ClientRequest {
  
      private final String destination;
      private final AbstractRequest.Builder<?> requestBuilder;
      private final int correlationId;
      private final String clientId;
      private final long createdTimeMs;
      private final boolean expectResponse;
      private final int requestTimeoutMs;
      private final RequestCompletionHandler callback;
  
      /**
       * @param destination The brokerId to send the request to
       * @param requestBuilder The builder for the request to make
       * @param correlationId The correlation id for this client request
       * @param clientId The client ID to use for the header
       * @param createdTimeMs The unix timestamp in milliseconds for the time at which this request was created.
       * @param expectResponse Should we expect a response message or is this request complete once it is sent?
       * @param callback A callback to execute when the response has been received (or null if no callback is necessary)
       */
      public ClientRequest(String destination,
                           AbstractRequest.Builder<?> requestBuilder,
                           int correlationId,
                           String clientId,
                           long createdTimeMs,
                           boolean expectResponse,
                           int requestTimeoutMs,
                           RequestCompletionHandler callback) {
          this.destination = destination;
          this.requestBuilder = requestBuilder;
          this.correlationId = correlationId;
          this.clientId = clientId;
          this.createdTimeMs = createdTimeMs;
          this.expectResponse = expectResponse;
          this.requestTimeoutMs = requestTimeoutMs;
          this.callback = callback;
      }
  
      @Override
      public String toString() {
          return "ClientRequest(expectResponse=" + expectResponse +
              ", callback=" + callback +
              ", destination=" + destination +
              ", correlationId=" + correlationId +
              ", clientId=" + clientId +
              ", createdTimeMs=" + createdTimeMs +
              ", requestBuilder=" + requestBuilder +
              ")";
      }
  
      public boolean expectResponse() {
          return expectResponse;
      }
  
      public ApiKeys apiKey() {
          return requestBuilder.apiKey();
      }
  
      public RequestHeader makeHeader(short version) {
          ApiKeys requestApiKey = apiKey();
          return new RequestHeader(
              new RequestHeaderData()
                  .setRequestApiKey(requestApiKey.id)
                  .setRequestApiVersion(version)
                  .setClientId(clientId)
                  .setCorrelationId(correlationId),
              requestApiKey.requestHeaderVersion(version));
      }
  
      public AbstractRequest.Builder<?> requestBuilder() {
          return requestBuilder;
      }
  
      public String destination() {
          return destination;
      }
  
      public RequestCompletionHandler callback() {
          return callback;
      }
  
      public long createdTimeMs() {
          return createdTimeMs;
      }
  
      public int correlationId() {
          return correlationId;
      }
  
      public int requestTimeoutMs() {
          return requestTimeoutMs;
      }
  }
  