| /* |
| * 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 |
| * <p> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p> |
| * 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.hadoop.hdds.utils; |
| |
| import java.io.IOException; |
| import java.util.Collection; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hdds.conf.ConfigurationSource; |
| |
| /** |
| * Configuration source to wrap Hadoop Configuration object. |
| */ |
| public class LegacyHadoopConfigurationSource implements ConfigurationSource { |
| |
| private Configuration configuration; |
| |
| public LegacyHadoopConfigurationSource( |
| Configuration configuration) { |
| this.configuration = configuration; |
| } |
| |
| @Override |
| public String get(String key) { |
| return configuration.getRaw(key); |
| } |
| |
| @Override |
| public char[] getPassword(String key) throws IOException { |
| return configuration.getPassword(key); |
| } |
| |
| @Override |
| public Collection<String> getConfigKeys() { |
| return configuration.getPropsWithPrefix("").keySet(); |
| } |
| |
| @Override |
| public void set(String key, String value) { |
| configuration.set(key, value); |
| } |
| |
| /** |
| * Helper method to get original Hadoop configuration for legacy Hadoop |
| * libraries. |
| * <p> |
| * It can work on server side but not on client side where we might have |
| * different configuration. |
| */ |
| public static Configuration asHadoopConfiguration( |
| ConfigurationSource config) { |
| if (config instanceof Configuration) { |
| return (Configuration) config; |
| } else if (config instanceof LegacyHadoopConfigurationSource) { |
| return ((LegacyHadoopConfigurationSource) config).configuration; |
| } else { |
| throw new IllegalArgumentException( |
| "Core Hadoop code requires real Hadoop configuration"); |
| } |
| } |
| |
| public Configuration getOriginalHadoopConfiguration() { |
| return configuration; |
| } |
| } |