1 /**
2 * Copyright 2010 The Apache Software Foundation
3 *
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 */
20
21 package org.apache.hadoop.hbase.util;
22
23 import org.apache.hadoop.hbase.VersionAnnotation;
24
25 /**
26 * This class finds the package info for hbase and the VersionAnnotation
27 * information. Taken from hadoop. Only name of annotation is different.
28 */
29 public class VersionInfo {
30 private static Package myPackage;
31 private static VersionAnnotation version;
32
33 static {
34 myPackage = VersionAnnotation.class.getPackage();
35 version = myPackage.getAnnotation(VersionAnnotation.class);
36 }
37
38 /**
39 * Get the meta-data for the hbase package.
40 * @return package
41 */
42 static Package getPackage() {
43 return myPackage;
44 }
45
46 /**
47 * Get the hbase version.
48 * @return the hbase version string, eg. "0.6.3-dev"
49 */
50 public static String getVersion() {
51 return version != null ? version.version() : "Unknown";
52 }
53
54 /**
55 * Get the subversion revision number for the root directory
56 * @return the revision number, eg. "451451"
57 */
58 public static String getRevision() {
59 return version != null ? version.revision() : "Unknown";
60 }
61
62 /**
63 * The date that hbase was compiled.
64 * @return the compilation date in unix date format
65 */
66 public static String getDate() {
67 return version != null ? version.date() : "Unknown";
68 }
69
70 /**
71 * The user that compiled hbase.
72 * @return the username of the user
73 */
74 public static String getUser() {
75 return version != null ? version.user() : "Unknown";
76 }
77
78 /**
79 * Get the subversion URL for the root hbase directory.
80 * @return the url
81 */
82 public static String getUrl() {
83 return version != null ? version.url() : "Unknown";
84 }
85
86 public static void main(String[] args) {
87 System.out.println("HBase " + getVersion());
88 System.out.println("Subversion " + getUrl() + " -r " + getRevision());
89 System.out.println("Compiled by " + getUser() + " on " + getDate());
90 }
91 }