mirror of
https://github.com/matrix-construct/construct
synced 2024-10-31 02:48:58 +01:00
91 lines
2 KiB
C++
91 lines
2 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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#pragma once
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#define HAVE_IRCD_DB_ERROR_H
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namespace ircd::db
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{
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struct error;
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}
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/// Database error. For most catchers of this error outside of the db:: system,
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/// the formatted what() message will be sufficient. The codes are not useful
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/// outside of db::. A common error `not_found` has its own subtype to be
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/// caught independently;
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///
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struct ircd::db::error
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:ircd::error
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{
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struct not_found;
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protected:
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static const rocksdb::Status _no_code_;
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public:
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uint8_t code {0};
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uint8_t subcode {0};
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uint8_t severity {0};
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error(generate_skip_t,
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const rocksdb::Status &);
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explicit
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error(const rocksdb::Status &);
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IRCD_OVERLOAD(internal)
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error(internal_t,
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const rocksdb::Status &s,
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const string_view &fmt,
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const va_rtti &ap);
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template<class... args>
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error(const rocksdb::Status &s,
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const string_view &fmt,
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args&&... a)
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:error
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{
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internal, s, fmt, va_rtti{std::forward<args>(a)...}
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}{}
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template<class... args>
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error(const string_view &fmt,
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args&&... a)
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:error
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{
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internal, _no_code_, fmt, va_rtti{std::forward<args>(a)...}
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}{}
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};
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namespace ircd::db
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{
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using not_found = error::not_found;
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}
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/// Common error `not_found` has its own subtype to be caught independently;
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/// it may contain a more limited what() (or none at all) as an optimization.
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///
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struct ircd::db::error::not_found
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:error
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{
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protected:
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static const rocksdb::Status _not_found_;
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public:
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template<class... args>
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not_found(const string_view &fmt,
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args&&... a)
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:error
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{
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_not_found_, fmt, std::forward<args>(a)...
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}{}
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not_found();
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};
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