/*
 * 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.orc.impl;

import java.security.Key;
import java.util.ArrayList;
import java.util.List;

class NullKeyProvider implements KeyProvider {

  @Override
  public List<String> getKeyNames() {
    return new ArrayList<>();
  }

  @Override
  public HadoopShims.KeyMetadata getCurrentKeyVersion(String keyName) {
    throw new IllegalArgumentException("Unknown key " + keyName);
  }

  @Override
  public LocalKey createLocalKey(HadoopShims.KeyMetadata key) {
    throw new IllegalArgumentException("Unknown key " + key);
  }

  @Override
  public Key decryptLocalKey(HadoopShims.KeyMetadata key, byte[] encryptedKey) {
    return null;
  }

  @Override
  public HadoopShims.KeyProviderKind getKind() {
    return null;
  }
}
