janhoy commented on code in PR #1935: URL: https://github.com/apache/solr/pull/1935#discussion_r1329800978
########## solr/core/src/java/org/apache/solr/util/EnvUtils.java: ########## @@ -0,0 +1,235 @@ +/* + * 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.solr.util; + +import java.io.IOException; +import java.io.InputStream; +import java.io.InputStreamReader; +import java.nio.charset.StandardCharsets; +import java.util.HashMap; +import java.util.List; +import java.util.Locale; +import java.util.Map; +import java.util.Objects; +import java.util.Properties; +import java.util.SortedMap; +import java.util.TreeMap; +import java.util.stream.Collectors; +import org.apache.solr.common.SolrException; +import org.apache.solr.common.util.StrUtils; +import org.apache.solr.common.util.Utils; + +/** + * This class is a unified provider of environment variables and system properties. It exposes a + * mutable copy of environment variables with. It also converts 'SOLR_FOO' variables to system + * properties 'solr.foo' and provide various convenience accessors for them. + */ +public class EnvUtils { + private static final SortedMap<String, String> ENV = new TreeMap<>(System.getenv()); + private static final Map<String, String> CUSTOM_MAPPINGS = new HashMap<>(); + + static { + try { + Properties props = new Properties(); + try (InputStream stream = + EnvUtils.class.getClassLoader().getResourceAsStream("EnvToSyspropMappings.properties")) { + props.load(new InputStreamReader(Objects.requireNonNull(stream), StandardCharsets.UTF_8)); + for (String key : props.stringPropertyNames()) { + CUSTOM_MAPPINGS.put(key, props.getProperty(key)); + } + init(false); + } + } catch (IOException e) { + throw new SolrException( + SolrException.ErrorCode.INVALID_STATE, "Failed loading env.var->properties mapping", e); + } + } + + /** + * Get all environment variables with SOLR_ prefix. + * + * @return sorted map of environment variables + */ + public static SortedMap<String, String> getEnvs() { + return ENV; + } + + /** Get a single environment variable as string */ + public static String getEnv(String key) { + return ENV.get(key); + } + + /** Get a single environment variable as string, or default */ + public static String getEnv(String key, String defaultValue) { + return ENV.getOrDefault(key, defaultValue); + } + + /** Get an environment variable as long */ + public static long getEnvAsLong(String key) { + return Long.parseLong(ENV.get(key)); + } + + /** Get an environment variable as long, or default value */ + public static long getEnvAsLong(String key, long defaultValue) { + String value = ENV.get(key); + if (value == null) { + return defaultValue; + } + return Long.parseLong(value); + } + + /** Get an env var as boolean */ + public static boolean getEnvAsBool(String key) { + return Boolean.parseBoolean(ENV.get(key)); Review Comment: Yea, it is in use. Only difference is it is case sensitive, see #1931 -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@solr.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@solr.apache.org For additional commands, e-mail: issues-h...@solr.apache.org
