/**
 * 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.hdfs.protocol.datatransfer.sasl;

import java.io.IOException;

import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.hdfs.security.token.block.DataEncryptionKey;

/**
 * Creates a new {@link DataEncryptionKey} on demand.
 */
@InterfaceAudience.Private
public interface DataEncryptionKeyFactory {

  /**
   * Creates a new DataEncryptionKey.
   *
   * @return DataEncryptionKey newly created
   * @throws IOException for any error
   */
  DataEncryptionKey newDataEncryptionKey() throws IOException;
}