| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.tez.common; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Properties; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.classification.InterfaceAudience.Private; |
| import org.apache.hadoop.classification.InterfaceStability.Unstable; |
| import org.apache.hadoop.io.IOUtils; |
| import org.apache.hadoop.util.ClassUtil; |
| |
| @Private |
| @Unstable |
| public class VersionInfo { |
| private static final Log LOG = LogFactory.getLog(VersionInfo.class); |
| |
| private final Properties info; |
| private final String component; |
| |
| private static final String VERSION = "version"; |
| private static final String REVISION = "revision"; |
| private static final String BUILD_TIME = "buildtime"; |
| private static final String SCM_URL = "scmurl"; |
| |
| public static final String UNKNOWN = "Unknown"; |
| |
| protected VersionInfo(String component) { |
| this.component = component; |
| info = new Properties(); |
| String versionInfoFile = component + "-version-info.properties"; |
| InputStream is = null; |
| try { |
| is = Thread.currentThread().getContextClassLoader() |
| .getResourceAsStream(versionInfoFile); |
| if (is == null) { |
| throw new IOException("Resource not found"); |
| } |
| info.load(is); |
| } catch (IOException ex) { |
| LogFactory.getLog(getClass()).warn("Could not read '" + |
| versionInfoFile + "', " + ex.toString(), ex); |
| } finally { |
| IOUtils.closeStream(is); |
| } |
| } |
| |
| public String getVersion() { |
| return info.getProperty(VERSION, UNKNOWN); |
| } |
| |
| public String getBuildTime() { |
| return info.getProperty(BUILD_TIME, UNKNOWN); |
| } |
| |
| public String getRevision() { |
| return info.getProperty(REVISION, UNKNOWN); |
| } |
| |
| public String getSCMURL() { |
| return info.getProperty(SCM_URL, UNKNOWN); |
| } |
| |
| @Override |
| public String toString() { |
| return "[ component=" + component |
| + ", version=" + getVersion() |
| + ", revision=" + getRevision() |
| + ", SCM-URL=" + getSCMURL() |
| + ", buildTIme=" + getBuildTime() |
| + " ]"; |
| } |
| |
| public static void main(String[] args) { |
| if (args.length != 1) { |
| System.err.println("Invalid no. of args. Usage: VersionInfo <component-name>"); |
| System.exit(-1); |
| } |
| |
| VersionInfo versionInfo = new VersionInfo(args[0]); |
| System.out.println("VersionInfo: " + versionInfo.toString()); |
| System.out.println("This command was run using " + |
| ClassUtil.findContainingJar(VersionInfo.class)); |
| } |
| |
| } |