| /* |
| * 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.giraph.utils; |
| |
| import org.apache.log4j.Logger; |
| |
| import com.google.common.collect.Maps; |
| import com.google.common.io.Resources; |
| |
| import java.io.IOException; |
| import java.net.URL; |
| import java.util.Map; |
| import java.util.Properties; |
| |
| /** |
| * Versions of Giraph dependencies. This pulls version information from a known |
| * properties file. That file is created by maven when building the jar and |
| * populated with versions from the pom. We put the properties file in a known |
| * resources folder so that it is easy to pick up. |
| * |
| * See http://bit.ly/19LQyrK for more information. |
| */ |
| public class GiraphDepVersions { |
| /** Logger */ |
| private static final Logger LOG = Logger.getLogger(GiraphDepVersions.class); |
| |
| /** Path to resource */ |
| private static final String RESOURCE_NAME = |
| "org/apache/giraph/versions.properties"; |
| |
| /** Singleton */ |
| private static final GiraphDepVersions INSTANCE = new GiraphDepVersions(); |
| |
| /** The properties read */ |
| private final Properties properties; |
| |
| /** Constructor */ |
| private GiraphDepVersions() { |
| URL url = Resources.getResource(RESOURCE_NAME); |
| properties = new Properties(); |
| try { |
| properties.load(url.openStream()); |
| } catch (IOException e) { |
| LOG.error("Could not read giraph versions from file " + RESOURCE_NAME); |
| } |
| } |
| |
| /** |
| * Get singleton instance |
| * |
| * @return singleton |
| */ |
| public static GiraphDepVersions get() { |
| return INSTANCE; |
| } |
| |
| public Properties getProperties() { |
| return properties; |
| } |
| |
| /** |
| * Get version of the named dependency, or null if not found |
| * |
| * @param name dependency name |
| * @return version, or null |
| */ |
| public String versionOf(String name) { |
| return properties.getProperty(name); |
| } |
| |
| /** Log the dependency versions we're using */ |
| public void logVersionsUsed() { |
| Map<String, String> sortedVersions = Maps.newTreeMap(); |
| for (Map.Entry<Object, Object> entry : properties.entrySet()) { |
| sortedVersions.put(entry.getKey().toString(), |
| entry.getValue().toString()); |
| } |
| StringBuilder sb = new StringBuilder(sortedVersions.size() * 20); |
| for (Map.Entry<String, String> entry : sortedVersions.entrySet()) { |
| sb.append(" ").append(entry.getKey()).append(": "). |
| append(entry.getValue()).append("\n"); |
| } |
| LOG.info("Versions of Giraph dependencies =>\n" + sb); |
| } |
| } |