| /** |
| * 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.s3a; |
| |
| import com.amazonaws.auth.AWSCredentials; |
| import com.amazonaws.auth.AWSCredentialsProvider; |
| import com.amazonaws.auth.BasicAWSCredentials; |
| import org.apache.commons.lang.StringUtils; |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.classification.InterfaceStability; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.security.ProviderUtils; |
| |
| import java.io.IOException; |
| |
| import static org.apache.hadoop.fs.s3a.Constants.ACCESS_KEY; |
| import static org.apache.hadoop.fs.s3a.Constants.SECRET_KEY; |
| |
| /** |
| * Support simple credentials for authenticating with AWS. |
| * Keys generated in URLs are not supported. |
| * |
| * Please note that users may reference this class name from configuration |
| * property fs.s3a.aws.credentials.provider. Therefore, changing the class name |
| * would be a backward-incompatible change. |
| */ |
| @InterfaceAudience.Public |
| @InterfaceStability.Stable |
| public class SimpleAWSCredentialsProvider implements AWSCredentialsProvider { |
| |
| public static final String NAME |
| = "org.apache.hadoop.fs.s3a.SimpleAWSCredentialsProvider"; |
| private String accessKey; |
| private String secretKey; |
| private IOException lookupIOE; |
| |
| public SimpleAWSCredentialsProvider(Configuration conf) { |
| try { |
| Configuration c = ProviderUtils.excludeIncompatibleCredentialProviders( |
| conf, S3AFileSystem.class); |
| this.accessKey = S3AUtils.lookupPassword(c, ACCESS_KEY, null); |
| this.secretKey = S3AUtils.lookupPassword(c, SECRET_KEY, null); |
| } catch (IOException e) { |
| lookupIOE = e; |
| } |
| } |
| |
| public AWSCredentials getCredentials() { |
| if (lookupIOE != null) { |
| // propagate any initialization problem |
| throw new CredentialInitializationException(lookupIOE.toString(), |
| lookupIOE); |
| } |
| if (!StringUtils.isEmpty(accessKey) && !StringUtils.isEmpty(secretKey)) { |
| return new BasicAWSCredentials(accessKey, secretKey); |
| } |
| throw new CredentialInitializationException( |
| "Access key, secret key or session token is unset"); |
| } |
| |
| @Override |
| public void refresh() {} |
| |
| @Override |
| public String toString() { |
| return getClass().getSimpleName(); |
| } |
| |
| } |