#pragma once

namespace Envoy {

namespace Tracing {

/**

 * The reasons why trace sampling may or may not be performed.

 */

enum class Reason {

  // Not sampled based on supplied request id or other reason.

  NotTraceable,

  // Not sampled due to being a health check.

  HealthCheck,

  // Sampling enabled.

  Sampling,

  // Sampling forced by the service.

  ServiceForced,

  // Sampling forced by the client.

  ClientForced,

};

/**

 * The decision regarding whether traces should be sampled, and the reason for it.

 */

struct Decision {

  Reason reason;

  bool traced;

};

} // namespace Tracing

} // namespace Envoy