content: /*
   * Copyright 2021-2024 Aklivity Inc
   *
   * Licensed under the Aklivity Community License (the "License"); you may not use
   * this file except in compliance with the License.  You may obtain a copy of the
   * License at
   *
   *   https://www.aklivity.io/aklivity-community-license/
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES 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.command.dump.internal.airline.spy;
  
  import org.agrona.DirectBuffer;
  
  import io.aklivity.zilla.runtime.engine.binding.function.MessageConsumer;
  import io.aklivity.zilla.runtime.engine.binding.function.MessagePredicate;
  
  public interface RingBufferSpy
  {
      enum SpyPosition
      {
          ZERO,
          HEAD,
          TAIL
      }
  
      void spyAt(SpyPosition position);
  
      int spy(MessagePredicate handler);
      int spy(MessagePredicate handler, int messageCountLimit);
      int peek(MessageConsumer handler);
  
      long producerPosition();
      long consumerPosition();
  
      DirectBuffer buffer();
  }
  