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.snapshot;
  
  import org.apache.kafka.common.record.MemoryRecords;
  import org.apache.kafka.common.record.Records;
  import org.apache.kafka.common.record.UnalignedMemoryRecords;
  import org.apache.kafka.common.record.UnalignedRecords;
  import org.apache.kafka.server.common.OffsetAndEpoch;
  
  import java.nio.ByteBuffer;
  
  public final class MockRawSnapshotReader implements RawSnapshotReader {
      private final OffsetAndEpoch snapshotId;
      private final MemoryRecords data;
  
      public MockRawSnapshotReader(OffsetAndEpoch snapshotId, ByteBuffer data) {
          this.snapshotId = snapshotId;
          this.data = MemoryRecords.readableRecords(data);
      }
  
      @Override
      public OffsetAndEpoch snapshotId() {
          return snapshotId;
      }
  
      @Override
      public long sizeInBytes() {
          return data.sizeInBytes();
      }
  
      @Override
      public UnalignedRecords slice(long position, int size) {
          ByteBuffer buffer = data.buffer();
          buffer.position(Math.toIntExact(position));
          buffer.limit(Math.min(buffer.limit(), Math.toIntExact(position + size)));
          return new UnalignedMemoryRecords(buffer.slice());
      }
  
      @Override
      public Records records() {
          return data;
      }
  
      @Override
      public String toString() {
          return String.format("MockRawSnapshotReader(snapshotId=%s, data=%s)", snapshotId, data);
      }
  }
  