routing_guidelines_datatypes.h

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/*
  Copyright (c) 2024, 2025, Oracle and/or its affiliates.
 
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  it under the terms of the GNU General Public License, version 2.0,
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*/
 
#ifndef MYSQLROUTER_ROUTING_GUIDELINES_DATATYPES_INCLUDED
#define MYSQLROUTER_ROUTING_GUIDELINES_DATATYPES_INCLUDED
 
#include "mysqlrouter/metadata_cache_export.h"
 
namespace routing_guidelines {
 
enum class routing_guidelines_errc {
  empty_routing_guidelines,
  not_supported_in_md,
  unsupported_version,
  parse_error
};
 
}  // namespace routing_guidelines
 
namespace std {
template <>
struct is_error_code_enum<routing_guidelines::routing_guidelines_errc>
    : public std::true_type {};
}  // namespace std
 
namespace routing_guidelines {
inline const std::error_category &routing_guidelines_category() noexcept {
  class routing_guidelines_category_impl : public std::error_category {
   public:
    const char *name() const noexcept override { return "routing guidelines"; }
    std::string message(int ev) const override {
      switch (static_cast<routing_guidelines_errc>(ev)) {
        case routing_guidelines_errc::empty_routing_guidelines:
          return "guidelines document is empty";
        case routing_guidelines_errc::not_supported_in_md:
          return "routing guidelines not supported in current metadata version";
        case routing_guidelines_errc::unsupported_version:
          return "routing guidelines version not supported";
        case routing_guidelines_errc::parse_error:
          return "errors while parsing routing guidelines document";
        default:
          return "unknown";
      }
    }
  };
 
  static routing_guidelines_category_impl instance;
  return instance;
}
 
inline std::error_code make_error_code(routing_guidelines_errc e) noexcept {
  return std::error_code(static_cast<int>(e), routing_guidelines_category());
}
 
}  // namespace routing_guidelines
 
#endif  // MYSQLROUTER_ROUTING_GUIDELINES_DATATYPES_INCLUDED