| /* |
| * 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.beam.sdk.util; |
| |
| import com.google.auto.value.AutoValue; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.Serializable; |
| import java.util.Map; |
| import java.util.Properties; |
| import org.apache.beam.vendor.guava.v20_0.com.google.common.collect.ImmutableMap; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Properties pertaining to this release of Apache Beam. |
| * |
| * <p>Properties will always include a name and version. |
| */ |
| @AutoValue |
| public abstract class ReleaseInfo implements Serializable { |
| private static final String PROPERTIES_PATH = "/org/apache/beam/sdk/sdk.properties"; |
| |
| /** Returns an instance of {@link ReleaseInfo}. */ |
| public static ReleaseInfo getReleaseInfo() { |
| return LazyInit.INSTANCE; |
| } |
| |
| /** Returns an immutable map of all properties pertaining to this release. */ |
| public abstract Map<String, String> getProperties(); |
| |
| /** Provides the SDK name. */ |
| public String getName() { |
| return getProperties().get("name"); |
| } |
| |
| /** Provides the SDK version. */ |
| public String getVersion() { |
| return getProperties().get("version"); |
| } |
| |
| ///////////////////////////////////////////////////////////////////////// |
| private static final Logger LOG = LoggerFactory.getLogger(ReleaseInfo.class); |
| private static final String DEFAULT_NAME = "Apache Beam SDK for Java"; |
| private static final String DEFAULT_VERSION = "Unknown"; |
| |
| private static class LazyInit { |
| private static final ReleaseInfo INSTANCE; |
| |
| static { |
| Properties properties = new Properties(); |
| try (InputStream in = ReleaseInfo.class.getResourceAsStream(PROPERTIES_PATH)) { |
| if (in == null) { |
| LOG.warn("Beam properties resource not found: {}", PROPERTIES_PATH); |
| } else { |
| properties.load(in); |
| } |
| } catch (IOException e) { |
| LOG.warn("Error loading Beam properties resource: ", e); |
| } |
| if (!properties.containsKey("name")) { |
| properties.setProperty("name", DEFAULT_NAME); |
| } |
| if (!properties.containsKey("version")) { |
| properties.setProperty("version", DEFAULT_VERSION); |
| } |
| INSTANCE = new AutoValue_ReleaseInfo(ImmutableMap.copyOf((Map) properties)); |
| } |
| } |
| } |