hadoop IAMInstanceCredentialsProvider 源码

  • 2022-10-20
  • 浏览 (107)

haddop IAMInstanceCredentialsProvider 代码

文件路径:/hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/auth/IAMInstanceCredentialsProvider.java

/*
 * 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.auth;

import java.io.Closeable;
import java.io.IOException;

import com.amazonaws.AmazonClientException;
import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.AWSCredentialsProvider;
import com.amazonaws.auth.EC2ContainerCredentialsProviderWrapper;

import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;

/**
 * This is an IAM credential provider which wraps
 * an {@code EC2ContainerCredentialsProviderWrapper}
 * to provide credentials when the S3A connector is instantiated on AWS EC2
 * or the AWS container services.
 * <p>
 * When it fails to authenticate, it raises a
 * {@link NoAwsCredentialsException} which can be recognized by retry handlers
 * as a non-recoverable failure.
 * <p>
 * It is implicitly public; marked evolving as we can change its semantics.
 *
 * @deprecated This class will be replaced by one that implements AWS SDK V2's AwsCredentialProvider
 * as part of upgrading S3A to SDK V2. See HADOOP-18073.
 */
@InterfaceAudience.Public
@InterfaceStability.Evolving
@Deprecated
public class IAMInstanceCredentialsProvider
    implements AWSCredentialsProvider, Closeable {

  private final AWSCredentialsProvider provider =
      new EC2ContainerCredentialsProviderWrapper();

  public IAMInstanceCredentialsProvider() {
  }

  /**
   * Ask for the credentials.
   * Failure invariably means "you aren't running in an EC2 VM or AWS container".
   * @return the credentials
   * @throws NoAwsCredentialsException on auth failure to indicate non-recoverable.
   */
  @Override
  public AWSCredentials getCredentials() {
    try {
      return provider.getCredentials();
    } catch (AmazonClientException e) {
      throw new NoAwsCredentialsException("IAMInstanceCredentialsProvider",
          e.getMessage(),
          e);
    }
  }

  @Override
  public void refresh() {
    provider.refresh();
  }

  @Override
  public void close() throws IOException {
    // no-op.
  }
}

相关信息

hadoop 源码目录

相关文章

hadoop AbstractAWSCredentialProvider 源码

hadoop AbstractSessionCredentialsProvider 源码

hadoop AssumedRoleCredentialProvider 源码

hadoop AwsSignerInitializer 源码

hadoop MarshalledCredentialBinding 源码

hadoop MarshalledCredentialProvider 源码

hadoop MarshalledCredentials 源码

hadoop NoAuthWithAWSException 源码

hadoop NoAwsCredentialsException 源码

hadoop RoleModel 源码

0  赞