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.fetch;
  
  import java.util.Map;
  
  import org.apache.kafka.common.Configurable;
  
  import io.aiven.kafka.tieredstorage.config.ChunkManagerFactoryConfig;
  import io.aiven.kafka.tieredstorage.fetch.cache.ChunkCache;
  import io.aiven.kafka.tieredstorage.security.AesEncryptionProvider;
  import io.aiven.kafka.tieredstorage.storage.ObjectFetcher;
  
  public class ChunkManagerFactory implements Configurable {
      private ChunkManagerFactoryConfig config;
  
      @Override
      public void configure(final Map<String, ?> configs) {
          this.config = new ChunkManagerFactoryConfig(configs);
      }
  
      public ChunkManager initChunkManager(final ObjectFetcher fileFetcher,
                                           final AesEncryptionProvider aesEncryptionProvider) {
          final DefaultChunkManager defaultChunkManager = new DefaultChunkManager(fileFetcher, aesEncryptionProvider);
          if (config.cacheClass() != null) {
              try {
                  final ChunkCache<?> chunkCache = config
                      .cacheClass()
                      .getDeclaredConstructor(ChunkManager.class)
                      .newInstance(defaultChunkManager);
                  chunkCache.configure(config.originalsWithPrefix(ChunkManagerFactoryConfig.FETCH_CHUNK_CACHE_PREFIX));
                  return chunkCache;
              } catch (final ReflectiveOperationException e) {
                  throw new RuntimeException(e);
              }
          } else {
              return defaultChunkManager;
          }
      }
  }
  