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.kstream.internals;
  
  import org.apache.kafka.streams.processor.api.ProcessorContext;
  import org.apache.kafka.streams.processor.api.Record;
  import org.apache.kafka.streams.processor.internals.InternalProcessorContext;
  import org.apache.kafka.streams.processor.internals.ProcessorNode;
  import org.apache.kafka.streams.state.ValueAndTimestamp;
  import org.apache.kafka.streams.state.internals.CacheFlushListener;
  
  import static org.apache.kafka.streams.state.ValueAndTimestamp.getValueOrNull;
  
  class TimestampedCacheFlushListener<KOut, VOut> implements CacheFlushListener<KOut, ValueAndTimestamp<VOut>> {
  
      private final InternalProcessorContext<KOut, Change<VOut>> context;
  
      @SuppressWarnings("rawtypes")
      private final ProcessorNode myNode;
  
      TimestampedCacheFlushListener(final ProcessorContext<KOut, Change<VOut>> context) {
          this.context = (InternalProcessorContext<KOut, Change<VOut>>) context;
          myNode = this.context.currentNode();
      }
  
      @Override
      public void apply(final Record<KOut, Change<ValueAndTimestamp<VOut>>> record) {
          @SuppressWarnings("rawtypes") final ProcessorNode prev = context.currentNode();
          context.setCurrentNode(myNode);
          try {
              context.forward(
                  record
                      .withValue(
                          new Change<>(
                              getValueOrNull(record.value().newValue),
                              getValueOrNull(record.value().oldValue),
                              record.value().isLatest))
                      .withTimestamp(
                          record.value().newValue != null ? record.value().newValue.timestamp()
                              : record.timestamp())
              );
          } finally {
              context.setCurrentNode(prev);
          }
      }
  }
  