content: /*
   * Copyright 2023 Aiven Oy
   *
   * Licensed 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 io.aiven.kafka.tieredstorage.manifest.serde;
  
  import javax.crypto.SecretKey;
  
  import java.io.IOException;
  import java.util.Objects;
  import java.util.function.Function;
  
  import io.aiven.kafka.tieredstorage.security.EncryptedDataKey;
  
  import com.fasterxml.jackson.core.JsonGenerator;
  import com.fasterxml.jackson.databind.SerializerProvider;
  import com.fasterxml.jackson.databind.ser.std.StdSerializer;
  
  class DataKeySerializer extends StdSerializer<SecretKey> {
      private final Function<byte[], EncryptedDataKey> dataKeyEncryptor;
  
      DataKeySerializer(final Function<byte[], EncryptedDataKey> dataKeyEncryptor) {
          super(SecretKey.class);
          this.dataKeyEncryptor = Objects.requireNonNull(dataKeyEncryptor, "dataKeyEncryptor cannot be null");
      }
  
      @Override
      public void serialize(final SecretKey value,
                            final JsonGenerator gen,
                            final SerializerProvider provider) throws IOException {
          final EncryptedDataKey encryptionResult = dataKeyEncryptor.apply(value.getEncoded());
          gen.writeString(encryptionResult.serialize());
      }
  }
  