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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.hive.druid.security;

import com.google.common.collect.Maps;
import com.metamx.http.client.response.ClientResponse;
import com.metamx.http.client.response.HttpResponseHandler;
import org.jboss.netty.handler.codec.http.HttpChunk;
import org.jboss.netty.handler.codec.http.HttpHeaders;
import org.jboss.netty.handler.codec.http.HttpResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.net.CookieManager;
import java.net.URI;

public class ResponseCookieHandler implements HttpResponseHandler
{
  protected static final Logger log = LoggerFactory.getLogger(ResponseCookieHandler.class);

  private final URI uri;
  private final CookieManager manager;
  private final HttpResponseHandler delegate;

  public ResponseCookieHandler(URI uri, CookieManager manager, HttpResponseHandler delegate)
  {
    this.uri = uri;
    this.manager = manager;
    this.delegate = delegate;
  }

  @Override
  public ClientResponse handleResponse(HttpResponse httpResponse)
  {
    try {
      final HttpHeaders headers = httpResponse.headers();
      manager.put(uri, Maps.asMap(headers.names(), input -> headers.getAll(input)));
    }
    catch (IOException e) {
      log.error("Error while processing Cookies from header", e);
    }
    finally {
      return delegate.handleResponse(httpResponse);
    }
  }

  @Override
  public ClientResponse handleChunk(
    ClientResponse clientResponse, HttpChunk httpChunk
  )
  {
    return delegate.handleChunk(clientResponse, httpChunk);
  }

  @Override
  public ClientResponse done(ClientResponse clientResponse)
  {
    return delegate.done(clientResponse);
  }

  @Override
  public void exceptionCaught(ClientResponse clientResponse, Throwable throwable)
  {
    delegate.exceptionCaught(clientResponse, throwable);
  }
}




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