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#ifndef GRPCXX_HEALTH_CHECK_SERVICE_INTERFACE_H
#define GRPCXX_HEALTH_CHECK_SERVICE_INTERFACE_H

#include <grpc++/support/config.h>

namespace grpc {

const char kHealthCheckServiceInterfaceArg[] =
    "grpc.health_check_service_interface";

/// The gRPC server uses this interface to expose the health checking service
/// without depending on protobuf.
class HealthCheckServiceInterface {
 public:
  virtual ~HealthCheckServiceInterface() {}

  /// Set or change the serving status of the given \a service_name.
  virtual void SetServingStatus(const grpc::string& service_name,
                                bool serving) = 0;
  /// Apply to all registered service names.
  virtual void SetServingStatus(bool serving) = 0;
};

/// Enable/disable the default health checking service. This applies to all C++
/// servers created afterwards. For each server, user can override the default
/// with a HealthCheckServiceServerBuilderOption.
/// NOT thread safe.
void EnableDefaultHealthCheckService(bool enable);

/// Returns whether the default health checking service is enabled.
/// NOT thread safe.
bool DefaultHealthCheckServiceEnabled();

}  // namespace grpc

#endif  // GRPCXX_HEALTH_CHECK_SERVICE_INTERFACE_H