| /** |
| * 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.lib.wsrs; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.io.IOUtils; |
| |
| import javax.ws.rs.core.StreamingOutput; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| |
| @InterfaceAudience.Private |
| public class InputStreamEntity implements StreamingOutput { |
| private InputStream is; |
| private long offset; |
| private long len; |
| |
| public InputStreamEntity(InputStream is, long offset, long len) { |
| this.is = is; |
| this.offset = offset; |
| this.len = len; |
| } |
| |
| public InputStreamEntity(InputStream is) { |
| this(is, 0, -1); |
| } |
| |
| @Override |
| public void write(OutputStream os) throws IOException { |
| IOUtils.skipFully(is, offset); |
| if (len == -1) { |
| IOUtils.copyBytes(is, os, 4096, true); |
| } else { |
| IOUtils.copyBytes(is, os, len, true); |
| } |
| } |
| } |