/*
    * The contents of this file are subject to the terms of the Common Development and
    * Distribution License (the License). You may not use this file except in compliance with the
    * License.
    *
    * You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
    * specific language governing permission and limitations under the License.
    *
    * When distributing Covered Software, include this CDDL Header Notice in each file and include
   * the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
   * Header, with the fields enclosed by brackets [] replaced by your own identifying
   * information: "Portions Copyright [year] [name of copyright owner]".
   *
   * Copyright 2009 Sun Microsystems Inc.
   * Portions Copyright 2010–2011 ApexIdentity Inc.
   * Portions Copyright 2011-2016 ForgeRock AS.
   */
  
  package org.forgerock.http.apache.sync;
  
  import static org.forgerock.http.io.IO.newBranchingInputStream;
  import static org.forgerock.util.promise.Promises.newResultPromise;
  
  import java.io.IOException;
  
  import org.apache.http.HttpResponse;
  import org.apache.http.client.methods.HttpUriRequest;
  import org.apache.http.impl.client.CloseableHttpClient;
  import org.forgerock.http.apache.AbstractHttpClient;
  import org.forgerock.http.io.Buffer;
  import org.forgerock.http.protocol.Request;
  import org.forgerock.http.protocol.Response;
  import org.forgerock.http.protocol.Status;
  import org.forgerock.util.Factory;
  import org.forgerock.util.promise.NeverThrowsException;
  import org.forgerock.util.promise.Promise;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Apache HTTP Client implementation.
   */
  final class SyncHttpClient extends AbstractHttpClient {
  
      private static final Logger logger = LoggerFactory.getLogger(SyncHttpClient.class);
  
      /** The Apache HTTP client to transmit requests through. */
      private final CloseableHttpClient httpClient;
      private final Factory<Buffer> storage;
  
      SyncHttpClient(final CloseableHttpClient httpClient, final Factory<Buffer> storage) {
          this.httpClient = httpClient;
          this.storage = storage;
      }
  
      @Override
      public void close() throws IOException {
          httpClient.close();
      }
  
      @Override
      public Promise<Response, NeverThrowsException> sendAsync(final Request request) {
          try {
              // Convert the request to AHC then send it
              HttpUriRequest clientRequest = createHttpUriRequest(request);
              HttpResponse clientResponse = httpClient.execute(clientRequest);
              // Convert the AHC response back into CHF
              Response response = createResponseWithoutEntity(clientResponse);
              response.getEntity().setRawContentInputStream(
                      newBranchingInputStream(clientResponse.getEntity().getContent(), storage));
              return newResultPromise(response);
          } catch (final Exception ex) {
              logger.trace("Failed to obtain response for {}", request.getUri(), ex);
              Response response = new Response(Status.BAD_GATEWAY);
              response.setCause(ex);
              return newResultPromise(response);
          }
      }
  
  }