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.clients.consumer.ConsumerRecord;
  import org.apache.kafka.common.utils.Bytes;
  import org.apache.kafka.streams.KeyValue;
  import org.apache.kafka.streams.errors.ProcessorStateException;
  import org.apache.kafka.streams.processor.internals.ChangelogRecordDeserializationHelper;
  import org.apache.kafka.streams.state.internals.PrefixedWindowKeySchemas.TimeFirstWindowKeySchema;
  
  import org.rocksdb.RocksDBException;
  import org.rocksdb.WriteBatch;
  
  import java.util.Collection;
  import java.util.HashMap;
  import java.util.Map;
  import java.util.Optional;
  
  /**
   * A RocksDB backed time-ordered segmented bytes store for window key schema.
   */
  public class RocksDBTimeOrderedKeyValueBytesStore extends AbstractRocksDBTimeOrderedSegmentedBytesStore {
  
      private long minTimestamp;
  
      RocksDBTimeOrderedKeyValueBytesStore(final String name,
                                           final String metricsScope) {
          super(name, metricsScope, Long.MAX_VALUE, Long.MAX_VALUE, new TimeFirstWindowKeySchema(), Optional.empty());
          minTimestamp = Long.MAX_VALUE;
      }
  
      @Override
      protected KeyValue<Bytes, byte[]> getIndexKeyValue(final Bytes baseKey, final byte[] baseValue) {
          throw new UnsupportedOperationException("Do not use for TimeOrderedKeyValueStore");
      }
  
      @Override
      Map<KeyValueSegment, WriteBatch> getWriteBatches(final Collection<ConsumerRecord<byte[], byte[]>> records) {
          final Map<KeyValueSegment, WriteBatch> writeBatchMap = new HashMap<>();
          for (final ConsumerRecord<byte[], byte[]> record : records) {
              final long timestamp = WindowKeySchema.extractStoreTimestamp(record.key());
              observedStreamTime = Math.max(observedStreamTime, timestamp);
              minTimestamp = Math.min(minTimestamp, timestamp);
              final long segmentId = segments.segmentId(timestamp);
              final KeyValueSegment segment = segments.getOrCreateSegmentIfLive(segmentId, internalProcessorContext, observedStreamTime);
              if (segment != null) {
                  //null segment is if it has expired, so  we don't want those records
                  ChangelogRecordDeserializationHelper.applyChecksAndUpdatePosition(
                      record,
                      consistencyEnabled,
                      position
                  );
                  try {
                      final WriteBatch batch = writeBatchMap.computeIfAbsent(segment, s -> new WriteBatch());
  
                      final byte[] baseKey = TimeFirstWindowKeySchema.fromNonPrefixWindowKey(record.key());
                      segment.addToBatch(new KeyValue<>(baseKey, record.value()), batch);
                  } catch (final RocksDBException e) {
                      throw new ProcessorStateException("Error restoring batch to store " + name(), e);
                  }
              }
          }
          return writeBatchMap;
      }
  
      @Override
      protected IndexToBaseStoreIterator getIndexToBaseStoreIterator(final SegmentIterator<KeyValueSegment> segmentIterator) {
          throw new UnsupportedOperationException("Do not use for TimeOrderedKeyValueStore");
      }
  
      protected long minTimestamp() {
          return minTimestamp;
      }
  }