content: /*
   * 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.kafka.streams.state.internals;
  
  import org.apache.kafka.common.serialization.Serde;
  import org.apache.kafka.common.utils.Bytes;
  import org.apache.kafka.common.utils.Time;
  import org.apache.kafka.streams.state.KeyValueStore;
  import org.apache.kafka.streams.state.StoreBuilder;
  import org.apache.kafka.streams.state.VersionedBytesStore;
  import org.apache.kafka.streams.state.VersionedBytesStoreSupplier;
  import org.apache.kafka.streams.state.VersionedKeyValueStore;
  
  import java.util.Objects;
  
  public class VersionedKeyValueStoreBuilder<K, V>
      extends AbstractStoreBuilder<K, V, VersionedKeyValueStore<K, V>> {
  
      private final VersionedBytesStoreSupplier storeSupplier;
  
      public VersionedKeyValueStoreBuilder(final VersionedBytesStoreSupplier storeSupplier,
                                           final Serde<K> keySerde,
                                           final Serde<V> valueSerde,
                                           final Time time) {
          super(
              storeSupplier.name(),
              keySerde,
              valueSerde,
              time);
          Objects.requireNonNull(storeSupplier, "storeSupplier can't be null");
          Objects.requireNonNull(storeSupplier.metricsScope(), "storeSupplier's metricsScope can't be null");
          this.storeSupplier = storeSupplier;
      }
  
      @Override
      public VersionedKeyValueStore<K, V> build() {
          final KeyValueStore<Bytes, byte[]> store = storeSupplier.get();
          if (!(store instanceof VersionedBytesStore)) {
              throw new IllegalStateException("VersionedBytesStoreSupplier.get() must return an instance of VersionedBytesStore");
          }
  
          return new MeteredVersionedKeyValueStore<>(
              maybeWrapLogging((VersionedBytesStore) store), // no caching layer for versioned stores
              storeSupplier.metricsScope(),
              time,
              keySerde,
              valueSerde);
      }
  
      @Override
      public StoreBuilder<VersionedKeyValueStore<K, V>> withCachingEnabled() {
          throw new IllegalStateException("Versioned stores do not support caching");
      }
  
      public long historyRetention() {
          return storeSupplier.historyRetentionMs();
      }
  
      private VersionedBytesStore maybeWrapLogging(final VersionedBytesStore inner) {
          if (!enableLogging) {
              return inner;
          }
          return new ChangeLoggingVersionedKeyValueBytesStore(inner);
      }
  }