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.extraction.engine;
19
20
21 import java.util.regex.Matcher;
22 import java.util.regex.Pattern;
23
24 import org.apache.hadoop.chukwa.Chunk;
25
26 /**
27 * Various utility methods.
28 *
29 */
30 public class RecordUtil {
31 static Pattern clusterPattern = Pattern
32 .compile("(.*)?cluster=\"(.*?)\"(.*)?");
33
34 public static String getClusterName(Record record) {
35 String tags = record.getValue(Record.tagsField);
36 if (tags != null) {
37 Matcher matcher = clusterPattern.matcher(tags);
38 if (matcher.matches()) {
39 return matcher.group(2);
40 }
41 }
42
43 return "undefined";
44 }
45 /**
46 * Uses a precompiled pattern, so theoretically faster than
47 * Chunk.getTag().
48 *
49 */
50 public static String getClusterName(Chunk chunk) {
51 String tags = chunk.getTags();
52 if (tags != null) {
53 Matcher matcher = clusterPattern.matcher(tags);
54 if (matcher.matches()) {
55 return matcher.group(2);
56 }
57 }
58
59 return "undefined";
60 }
61
62
63 }