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.commons.logging.LogFactory;
24 import java.io.PrintWriter;
25
26 import org.apache.hadoop.hbase.VersionAnnotation;
27 import org.apache.hadoop.hbase.master.HMaster;
28 import org.apache.commons.logging.Log;
29
30 /**
31 * This class finds the package info for hbase and the VersionAnnotation
32 * information. Taken from hadoop. Only name of annotation is different.
33 */
34 public class VersionInfo {
35 private static final Log LOG = LogFactory.getLog(VersionInfo.class.getName());
36 private static Package myPackage;
37 private static VersionAnnotation version;
38
39 static {
40 myPackage = VersionAnnotation.class.getPackage();
41 version = myPackage.getAnnotation(VersionAnnotation.class);
42 }
43
44 /**
45 * Get the meta-data for the hbase package.
46 * @return package
47 */
48 static Package getPackage() {
49 return myPackage;
50 }
51
52 /**
53 * Get the hbase version.
54 * @return the hbase version string, eg. "0.6.3-dev"
55 */
56 public static String getVersion() {
57 return version != null ? version.version() : "Unknown";
58 }
59
60 /**
61 * Get the subversion revision number for the root directory
62 * @return the revision number, eg. "451451"
63 */
64 public static String getRevision() {
65 return version != null ? version.revision() : "Unknown";
66 }
67
68 /**
69 * The date that hbase was compiled.
70 * @return the compilation date in unix date format
71 */
72 public static String getDate() {
73 return version != null ? version.date() : "Unknown";
74 }
75
76 /**
77 * The user that compiled hbase.
78 * @return the username of the user
79 */
80 public static String getUser() {
81 return version != null ? version.user() : "Unknown";
82 }
83
84 /**
85 * Get the subversion URL for the root hbase directory.
86 * @return the url
87 */
88 public static String getUrl() {
89 return version != null ? version.url() : "Unknown";
90 }
91
92 static String[] versionReport() {
93 return new String[] {
94 "HBase " + getVersion(),
95 "Subversion " + getUrl() + " -r " + getRevision(),
96 "Compiled by " + getUser() + " on " + getDate()
97 };
98 }
99
100 public static void writeTo(PrintWriter out) {
101 for (String line : versionReport()) {
102 out.println(line);
103 }
104 }
105
106 public static void logVersion() {
107 for (String line : versionReport()) {
108 LOG.info(line);
109 }
110 }
111
112 public static void main(String[] args) {
113 logVersion();
114 }
115 }