001// ***************************************************************************************************************************
002// * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.  See the NOTICE file *
003// * distributed with this work for additional information regarding copyright ownership.  The ASF licenses this file        *
004// * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance            *
005// * with the License.  You may obtain a copy of the License at                                                              *
006// *                                                                                                                         *
007// *  http://www.apache.org/licenses/LICENSE-2.0                                                                             *
008// *                                                                                                                         *
009// * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an  *
010// * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the License for the        *
011// * specific language governing permissions and limitations under the License.                                              *
012// ***************************************************************************************************************************
013package org.apache.juneau.rest.processor;
014
015import static org.apache.juneau.common.internal.IOUtils.*;
016
017import java.io.*;
018
019import org.apache.juneau.rest.*;
020
021/**
022 * Response processor for {@link InputStream} objects.
023 *
024 * <p>
025 * Simply pipes the contents of the {@link InputStream} to {@link RestResponse#getNegotiatedOutputStream()}.
026 *
027 * <h5 class='section'>See Also:</h5><ul>
028 *    <li class='link'><a class="doclink" href="../../../../../index.html#jrs.ResponseProcessors">Response Processors</a>
029 * </ul>
030 */
031public final class InputStreamProcessor implements ResponseProcessor {
032
033   @Override /* ResponseProcessor */
034   public int process(RestOpSession opSession) throws IOException {
035
036      RestResponse res = opSession.getResponse();
037      InputStream is = res.getContent(InputStream.class);
038
039      if (is == null)
040         return NEXT;
041
042      try (InputStream is2 = is; OutputStream os = res.getNegotiatedOutputStream()) {
043         pipe(is2, os);
044      }
045
046      return FINISHED;
047   }
048}