org.apache.hadoop.gateway.hdfs.dispatch.HdfsHttpClientDispatch Maven / Gradle / Ivy

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/**
 * 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.hadoop.gateway.hdfs.dispatch;

import org.apache.hadoop.gateway.dispatch.DefaultDispatch;
import org.apache.http.HttpEntity;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;

public class HdfsHttpClientDispatch extends DefaultDispatch {

  public HdfsHttpClientDispatch() throws ServletException {
    super();
  }

  //@Override
  /**
   * This method ensures that the request InputStream is not acquired
   * prior to a dispatch to a component such as a namenode that doesn't
   * the request body. The side effect of this is that the client does
   * not get a 100 continue from Knox which will trigger the client to
   * send the entire payload before redirect to the target component
   * like a datanode and have to send it again.
   */
  protected HttpEntity createRequestEntity(HttpServletRequest request)
      throws IOException {
    return null;
  }
}