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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;
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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 }
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47
48 static Package getPackage() {
49 return myPackage;
50 }
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56 public static String getVersion() {
57 return version != null ? version.version() : "Unknown";
58 }
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64 public static String getRevision() {
65 return version != null ? version.revision() : "Unknown";
66 }
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72 public static String getDate() {
73 return version != null ? version.date() : "Unknown";
74 }
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80 public static String getUser() {
81 return version != null ? version.user() : "Unknown";
82 }
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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 }