| /** |
| * 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.hadoop.fs.s3; |
| |
| import java.net.URI; |
| |
| import org.apache.hadoop.conf.Configuration; |
| |
| /** |
| * <p> |
| * Extracts AWS credentials from the filesystem URI or configuration. |
| * </p> |
| */ |
| public class S3Credentials { |
| |
| private String accessKey; |
| private String secretAccessKey; |
| |
| /** |
| * @throws IllegalArgumentException if credentials for S3 cannot be |
| * determined. |
| */ |
| public void initialize(URI uri, Configuration conf) { |
| if (uri.getHost() == null) { |
| throw new IllegalArgumentException("Invalid hostname in URI " + uri); |
| } |
| |
| String userInfo = uri.getUserInfo(); |
| if (userInfo != null) { |
| int index = userInfo.indexOf(':'); |
| if (index != -1) { |
| accessKey = userInfo.substring(0, index); |
| secretAccessKey = userInfo.substring(index + 1); |
| } else { |
| accessKey = userInfo; |
| } |
| } |
| |
| String scheme = uri.getScheme(); |
| String accessKeyProperty = String.format("fs.%s.awsAccessKeyId", scheme); |
| String secretAccessKeyProperty = |
| String.format("fs.%s.awsSecretAccessKey", scheme); |
| if (accessKey == null) { |
| accessKey = conf.get(accessKeyProperty); |
| } |
| if (secretAccessKey == null) { |
| secretAccessKey = conf.get(secretAccessKeyProperty); |
| } |
| if (accessKey == null && secretAccessKey == null) { |
| throw new IllegalArgumentException("AWS " + |
| "Access Key ID and Secret Access " + |
| "Key must be specified as the " + |
| "username or password " + |
| "(respectively) of a " + scheme + |
| " URL, or by setting the " + |
| accessKeyProperty + " or " + |
| secretAccessKeyProperty + |
| " properties (respectively)."); |
| } else if (accessKey == null) { |
| throw new IllegalArgumentException("AWS " + |
| "Access Key ID must be specified " + |
| "as the username of a " + scheme + |
| " URL, or by setting the " + |
| accessKeyProperty + " property."); |
| } else if (secretAccessKey == null) { |
| throw new IllegalArgumentException("AWS " + |
| "Secret Access Key must be " + |
| "specified as the password of a " + |
| scheme + " URL, or by setting the " + |
| secretAccessKeyProperty + |
| " property."); |
| } |
| |
| } |
| |
| public String getAccessKey() { |
| return accessKey; |
| } |
| |
| public String getSecretAccessKey() { |
| return secretAccessKey; |
| } |
| } |