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.utils.Bytes;
  import org.apache.kafka.streams.state.KeyValueStore;
  import org.apache.kafka.streams.state.VersionedBytesStore;
  
  /**
   * A {@link VersionedBytesStore} wrapper for writing changelog records on calls to
   * {@link VersionedBytesStore#put(Object, Object)} and {@link VersionedBytesStore#delete(Bytes, long)}.
   */
  public class ChangeLoggingVersionedKeyValueBytesStore extends ChangeLoggingKeyValueBytesStore implements VersionedBytesStore {
  
      private final VersionedBytesStore inner;
  
      ChangeLoggingVersionedKeyValueBytesStore(final KeyValueStore<Bytes, byte[]> inner) {
          super(inner);
          if (!(inner instanceof VersionedBytesStore)) {
              throw new IllegalArgumentException("inner store must be versioned");
          }
          this.inner = (VersionedBytesStore) inner;
      }
  
      @Override
      public long put(final Bytes key, final byte[] value, final long timestamp) {
          final long validTo = inner.put(key, value, timestamp);
          log(key, value, timestamp);
          return validTo;
      }
  
      @Override
      public byte[] get(final Bytes key, final long asOfTimestamp) {
          return inner.get(key, asOfTimestamp);
      }
  
      @Override
      public byte[] delete(final Bytes key, final long timestamp) {
          final byte[] oldValue = inner.delete(key, timestamp);
          log(key, null, timestamp);
          return oldValue;
      }
  
      @Override
      public void log(final Bytes key, final byte[] value, final long timestamp) {
          internalContext.logChange(
              name(),
              key,
              value,
              timestamp,
              wrapped().getPosition()
          );
      }
  }
  