034c1df29b
so that it is accessible from its caller. if we enforce the
compile-time format string check, the formatter would need the access to
the specialization of `fmt::formatter` of the arguments being foramtted.
to be prepared for this change, let's move the `fmt::formatter`
specialization up, otherwise we'd have following error after switching
to the compile-time format string check introduced by a recent seastar
change:
```
In file included from ./auth/authenticator.hh:22: ./auth/authentication_options.hh:50:49: error: call to consteval function 'fmt::basic_format_string<char, auth::authentication_option &>::basic_format_string<
char[32], 0>' is not a constant expression
50 | : std::invalid_argument(fmt::format("The {} option is not supported.", k)) {
| ^ ./auth/authentication_options.hh:57:13: error: explicit specialization of 'fmt::formatter<auth::authentication_option>' after instantiation
57 | struct fmt::formatter<auth::authentication_option> : fmt::formatter<string_view> {
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/fmt/base.h:1228:17: note: implicit instantiation first required here
1228 | -> decltype(typename Context::template formatter_type<T>().format(
| ^
In file included from replica/distributed_loader.cc:30:
```
Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>
Closes scylladb/scylladb#20447
68 lines
1.5 KiB
C++
68 lines
1.5 KiB
C++
/*
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* Copyright (C) 2018-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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#pragma once
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#include <optional>
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#include <stdexcept>
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#include <unordered_map>
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#include <unordered_set>
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#include <seastar/core/print.hh>
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#include <seastar/core/sstring.hh>
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#include "seastarx.hh"
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namespace auth {
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enum class authentication_option {
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password,
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options
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};
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}
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template <>
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struct fmt::formatter<auth::authentication_option> : fmt::formatter<string_view> {
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template <typename FormatContext>
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auto format(const auth::authentication_option a, FormatContext& ctx) const {
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using enum auth::authentication_option;
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switch (a) {
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case password:
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return formatter<string_view>::format("PASSWORD", ctx);
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case options:
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return formatter<string_view>::format("OPTIONS", ctx);
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}
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std::abort();
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}
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};
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namespace auth {
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using authentication_option_set = std::unordered_set<authentication_option>;
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using custom_options = std::unordered_map<sstring, sstring>;
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struct authentication_options final {
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std::optional<sstring> password;
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std::optional<custom_options> options;
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};
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inline bool any_authentication_options(const authentication_options& aos) noexcept {
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return aos.password || aos.options;
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}
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class unsupported_authentication_option : public std::invalid_argument {
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public:
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explicit unsupported_authentication_option(authentication_option k)
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: std::invalid_argument(format("The {} option is not supported.", k)) {
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}
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};
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}
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