hadoop KeyProvider 源码
haddop KeyProvider 代码
文件路径：/hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azure/KeyProvider.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.azure;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.conf.Configuration;
/**
* The interface that every Azure file system key provider must implement.
*/
@InterfaceAudience.Private
public interface KeyProvider {
/**
* Key providers must implement this method. Given a list of configuration
* parameters for the specified Azure storage account, retrieve the plaintext
* storage account key.
*
* @param accountName
* the storage account name
* @param conf
* Hadoop configuration parameters
* @return the plaintext storage account key
* @throws KeyProviderException Thrown if there is a problem instantiating a
* KeyProvider or retrieving a key using a KeyProvider object.
*/
String getStorageAccountKey(String accountName, Configuration conf)
throws KeyProviderException;
}
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