1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18 package org.apache.hadoop.chukwa.datacollection.writer;
19
20 import java.util.List;
21 import org.apache.hadoop.chukwa.Chunk;
22 import org.apache.hadoop.chukwa.datacollection.collector.servlet.LogDisplayServlet;
23 import org.apache.hadoop.chukwa.datacollection.writer.ChukwaWriter.CommitStatus;
24 import org.apache.hadoop.conf.Configuration;
25
26 public class ExtractorWriter extends PipelineableWriter {
27
28 public static LogDisplayServlet recipient;
29
30 @Override
31 public void close() throws WriterException {
32 next.close();
33 }
34
35 @Override
36 public void init(Configuration c) throws WriterException {
37 }
38
39 public CommitStatus add(List<Chunk> chunks) throws WriterException {
40 if(recipient != null)
41 recipient.add(chunks);
42 if (next != null)
43 return next.add(chunks); //pass data through
44 else
45 return ChukwaWriter.COMMIT_OK;
46 }
47
48 }