| /* |
| * 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.cassandra.spark.utils; |
| |
| import java.io.InputStream; |
| import java.util.Properties; |
| import java.util.function.Function; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Utility for serving build related information |
| */ |
| public final class BuildInfo |
| { |
| private static final Logger LOGGER = LoggerFactory.getLogger(BuildInfo.class); |
| |
| // Do not reorder! Build version constants must be initialized before user agent constants. |
| public static final String APPLICATION_NAME = "cassandra-analytics"; |
| public static final String BUILD_VERSION = getBuildVersion(); |
| @SuppressWarnings("unused") // Part of this library's API used by the consumers |
| public static final String BUILD_VERSION_AND_REVISION = getBuildVersionAndRevision(); |
| public static final String READER_USER_AGENT = getUserAgent("reader"); |
| public static final String WRITER_USER_AGENT = getUserAgent("writer"); |
| |
| private BuildInfo() |
| { |
| throw new IllegalStateException(getClass() + " is static utility class and shall not be instantiated"); |
| } |
| |
| private static String getUserAgent(String feature) |
| { |
| return String.format("%s/%s %s", APPLICATION_NAME, BUILD_VERSION, feature); |
| } |
| |
| @VisibleForTesting |
| static String getBuildVersion() |
| { |
| return getBuildInfo(properties -> properties.getProperty("build-version")); |
| } |
| |
| /** |
| * Determine whether the provided version is at least java 11 |
| * |
| * @param version the java specification version |
| * @return {@code true} if the java version is at least java 11, {@code false} otherwise |
| */ |
| public static boolean isAtLeastJava11(String version) |
| { |
| if (version == null) |
| { |
| return false; |
| } |
| else if (version.contains(".")) |
| { |
| return version.compareTo("11") >= 0; |
| } |
| else |
| { |
| return Integer.parseInt(version) >= 11; |
| } |
| } |
| |
| /** |
| * @return the java specification version from the system properties, or {@code null} if a |
| * {@link SecurityException} prevents us from reading the property |
| */ |
| public static String javaSpecificationVersion() |
| { |
| String javaSpecificationVersionPropertyName = "java.specification.version"; |
| try |
| { |
| return System.getProperty(javaSpecificationVersionPropertyName); |
| } |
| catch (SecurityException exception) |
| { |
| LOGGER.error("Unable to determine java specification version from system property={}", |
| javaSpecificationVersionPropertyName, exception); |
| return null; |
| } |
| } |
| |
| private static String getBuildVersionAndRevision() |
| { |
| return getBuildInfo(properties -> properties.getProperty("build-version") + "-" + properties.getProperty("build-rev")); |
| } |
| |
| private static String getBuildInfo(Function<Properties, String> extractor) |
| { |
| try (InputStream in = BuildInfo.class.getResourceAsStream("/cassandra-analytics-build.properties")) |
| { |
| Properties properties = new Properties(); |
| properties.load(in); |
| return extractor.apply(properties); |
| } |
| catch (Exception exception) |
| { |
| LOGGER.warn("Could not load the resource to get Cassandra Analytics build version", exception); |
| return "unknown"; |
| } |
| } |
| } |