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/*
* 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.spark.streaming.kinesis
import scala.collection.JavaConverters._
import com.amazonaws.auth._
import org.apache.spark.internal.Logging
/**
* Serializable interface providing a method executors can call to obtain an
* AWSCredentialsProvider instance for authenticating to AWS services.
*/
private[kinesis] sealed trait SerializableCredentialsProvider extends Serializable {
/**
* Return an AWSCredentialProvider instance that can be used by the Kinesis Client
* Library to authenticate to AWS services (Kinesis, CloudWatch and DynamoDB).
*/
def provider: AWSCredentialsProvider
}
/** Returns DefaultAWSCredentialsProviderChain for authentication. */
private[kinesis] final case object DefaultCredentialsProvider
extends SerializableCredentialsProvider {
def provider: AWSCredentialsProvider = new DefaultAWSCredentialsProviderChain
}
/**
* Returns AWSStaticCredentialsProvider constructed using basic AWS keypair. Falls back to using
* DefaultAWSCredentialsProviderChain if unable to construct a AWSCredentialsProviderChain
* instance with the provided arguments (e.g. if they are null).
*/
private[kinesis] final case class BasicCredentialsProvider(
awsAccessKeyId: String,
awsSecretKey: String) extends SerializableCredentialsProvider with Logging {
def provider: AWSCredentialsProvider = try {
new AWSStaticCredentialsProvider(new BasicAWSCredentials(awsAccessKeyId, awsSecretKey))
} catch {
case e: IllegalArgumentException =>
logWarning("Unable to construct AWSStaticCredentialsProvider with provided keypair; " +
"falling back to DefaultAWSCredentialsProviderChain.", e)
new DefaultAWSCredentialsProviderChain
}
}
/**
* Returns an STSAssumeRoleSessionCredentialsProvider instance which assumes an IAM
* role in order to authenticate against resources in an external account.
*/
private[kinesis] final case class STSCredentialsProvider(
stsRoleArn: String,
stsSessionName: String,
stsExternalId: Option[String] = None,
longLivedCredsProvider: SerializableCredentialsProvider = DefaultCredentialsProvider)
extends SerializableCredentialsProvider {
def provider: AWSCredentialsProvider = {
val builder = new STSAssumeRoleSessionCredentialsProvider.Builder(stsRoleArn, stsSessionName)
.withLongLivedCredentialsProvider(longLivedCredsProvider.provider)
stsExternalId match {
case Some(stsExternalId) =>
builder.withExternalId(stsExternalId)
.build()
case None =>
builder.build()
}
}
}
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