org.openjdk.jmh.util.Version Maven / Gradle / Ivy
/*
* Copyright (c) 2014, 2014, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package org.openjdk.jmh.util;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.Properties;
import java.util.concurrent.TimeUnit;
public class Version {
public static String getVersion() {
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
printVersion(pw);
pw.close();
return sw.toString();
}
private static void printVersion(PrintWriter pw) {
Properties p = new Properties();
InputStream s = Version.class.getResourceAsStream("/jmh.properties");
if (s == null) {
pw.print("Cannot figure out JMH version, no jmh.properties");
return;
}
try {
p.load(s);
} catch (IOException e) {
pw.print("Cannot figure out JMH version");
return;
} finally {
FileUtils.safelyClose(s);
}
String version = (String) p.get("jmh.version");
if (version == null) {
pw.print("Cannot read jmh.version");
return;
}
pw.print("JMH " + version + " ");
String time = (String) p.get("jmh.buildDate");
if (time == null) {
pw.print("(cannot read jmh.buildDate)");
return;
}
pw.print("(released ");
try {
Date parse = new SimpleDateFormat("yyyy/MM/dd", Locale.ROOT).parse(time);
long diff = (System.currentTimeMillis() - parse.getTime()) / TimeUnit.DAYS.toMillis(1);
if (diff > 0) {
pw.print(String.format("%d days ago", diff));
if (diff > 90) {
pw.print(", please consider updating!");
}
} else {
pw.print("today");
}
} catch (ParseException e) {
pw.print(time);
}
pw.print(")");
}
}