content: /*
   * Copyright 2021-2024 Aklivity Inc.
   *
   * Aklivity 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 io.aklivity.zilla.runtime.binding.kafka.internal.cache;
  
  import static java.lang.Integer.toUnsignedLong;
  
  public final class KafkaCacheCursorRecord
  {
      public static final int NEXT_SEGMENT_VALUE = Integer.MAX_VALUE - 1;
      public static final int RETRY_SEGMENT_VALUE = -1;
  
      public static boolean cursorNextValue(
          long cursor)
      {
          return cursorValue(cursor) == NEXT_SEGMENT_VALUE;
      }
  
      public static boolean cursorRetryValue(
          long cursor)
      {
          return cursorValue(cursor) == RETRY_SEGMENT_VALUE;
      }
  
      public static int cursorIndex(
          long cursor)
      {
          return (int)(cursor >>> 32);
      }
  
      public static int cursorValue(
          long cursor)
      {
          return (int)(cursor & 0xFFFF_FFFFL);
      }
  
      public static long cursor(
          int index,
          int value)
      {
          return ((long) index << 32) | toUnsignedLong(value);
      }
  
      private KafkaCacheCursorRecord()
      {
          // no instances
      }
  }
  