| /* |
| * 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.drill.exec.store.security; |
| |
| import com.fasterxml.jackson.annotation.JsonCreator; |
| import com.fasterxml.jackson.annotation.JsonProperty; |
| import org.apache.drill.common.logical.security.CredentialsProvider; |
| import org.apache.hadoop.conf.Configuration; |
| |
| import java.io.IOException; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Objects; |
| |
| /** |
| * Implementation of {@link CredentialsProvider} that obtains credential values from |
| * {@link Configuration} properties. |
| * <p> |
| * Its constructor accepts a map with credential names as keys and property names as values. |
| */ |
| public class HadoopCredentialsProvider implements CredentialsProvider { |
| private final Configuration configuration; |
| private final Map<String, String> propertyNames; |
| |
| public HadoopCredentialsProvider(Configuration configuration, Map<String, String> propertyNames) { |
| this.configuration = configuration; |
| this.propertyNames = propertyNames; |
| } |
| |
| @JsonCreator |
| public HadoopCredentialsProvider(@JsonProperty("propertyNames") Map<String, String> propertyNames) { |
| this.configuration = new Configuration(); |
| this.propertyNames = propertyNames; |
| } |
| |
| @Override |
| public Map<String, String> getCredentials() { |
| Map<String, String> credentials = new HashMap<>(); |
| propertyNames.forEach((key, value) -> { |
| try { |
| char[] credValue = configuration.getPassword(value); |
| if (credValue != null) { |
| credentials.put(key, new String(credValue)); |
| } |
| } catch (IOException e) { |
| throw new RuntimeException("Error while fetching credentials from configuration", e); |
| } |
| }); |
| |
| return credentials; |
| } |
| |
| public Map<String, String> getPropertyNames() { |
| return propertyNames; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| HadoopCredentialsProvider that = (HadoopCredentialsProvider) o; |
| return Objects.equals(propertyNames, that.propertyNames); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(propertyNames); |
| } |
| } |