#pragma once

#include "envoy/common/pure.h"

#include "envoy/stream_info/filter_state.h"

namespace Envoy {

namespace StreamInfo {

/**

 * A FilterState object that tracks a single uint64_t value.

 */

class UInt64Accessor : public FilterState::Object {

public:

  /**

   * Increments the tracked value by 1.

   */

  virtual void increment() PURE;

  /**

   * @return the tracked value.

   */

  virtual uint64_t value() const PURE;

};

} // namespace StreamInfo

} // namespace Envoy