hadoop EncryptionSecretOperations 源码
haddop EncryptionSecretOperations 代码
文件路径：/hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/auth/delegation/EncryptionSecretOperations.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.delegation;
import java.util.Optional;
import com.amazonaws.services.s3.model.SSEAwsKeyManagementParams;
import com.amazonaws.services.s3.model.SSECustomerKey;
import org.apache.hadoop.fs.s3a.S3AEncryptionMethods;
/**
* These support operations on {@link EncryptionSecrets} which use the AWS SDK
* operations. Isolating them here ensures that that class is not required on
* the classpath.
*/
public final class EncryptionSecretOperations {
private EncryptionSecretOperations() {
}
/**
* Create SSE-C client side key encryption options on demand.
* @return an optional key to attach to a request.
* @param secrets source of the encryption secrets.
*/
public static Optional<SSECustomerKey> createSSECustomerKey(
final EncryptionSecrets secrets) {
if (secrets.hasEncryptionKey() &&
secrets.getEncryptionMethod() == S3AEncryptionMethods.SSE_C) {
return Optional.of(new SSECustomerKey(secrets.getEncryptionKey()));
} else {
return Optional.empty();
}
}
/**
* Create SSE-KMS options for a request, iff the encryption is SSE-KMS.
* @return an optional SSE-KMS param to attach to a request.
* @param secrets source of the encryption secrets.
*/
public static Optional<SSEAwsKeyManagementParams> createSSEAwsKeyManagementParams(
final EncryptionSecrets secrets) {
//Use specified key, otherwise default to default master aws/s3 key by AWS
if (secrets.getEncryptionMethod() == S3AEncryptionMethods.SSE_KMS) {
if (secrets.hasEncryptionKey()) {
return Optional.of(new SSEAwsKeyManagementParams(
secrets.getEncryptionKey()));
} else {
return Optional.of(new SSEAwsKeyManagementParams());
}
} else {
return Optional.empty();
}
}
}
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