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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  
19  package org.apache.hadoop.chukwa.extraction.archive;
20  
21  
22  import java.text.SimpleDateFormat;
23  import org.apache.hadoop.chukwa.ChukwaArchiveKey;
24  import org.apache.hadoop.chukwa.ChunkImpl;
25  import org.apache.hadoop.mapred.lib.MultipleSequenceFileOutputFormat;
26  import org.apache.log4j.Logger;
27  
28  public class ChukwaArchiveHourlyOutputFormat extends
29      MultipleSequenceFileOutputFormat<ChukwaArchiveKey, ChunkImpl> {
30    static Logger log = Logger.getLogger(ChukwaArchiveHourlyOutputFormat.class);
31    SimpleDateFormat sdf = new SimpleDateFormat("yyyy_MM_dd_HH-00");
32  
33    @Override
34    protected String generateFileNameForKeyValue(ChukwaArchiveKey key,
35        ChunkImpl chunk, String name) {
36  
37      if (log.isDebugEnabled()) {
38        log.debug("ChukwaArchiveOutputFormat.fileName: "
39            + sdf.format(key.getTimePartition()));
40      }
41      return sdf.format(key.getTimePartition()) + ".arc";
42    }
43  }