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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab ft=cpp
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2022 Red Hat, Inc.
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#pragma once
#include <system_error>
#include <sqlite3.h>
namespace rgw::dbstore::sqlite {
// error category for sqlite extended result codes:
// https://www.sqlite.org/rescode.html
const std::error_category& error_category();
// sqlite exception type that carries the extended error code and message
class error : public std::runtime_error {
std::error_code ec;
public:
error(const char* errmsg, std::error_code ec)
: runtime_error(errmsg), ec(ec) {}
error(sqlite3* db, std::error_code ec) : error(::sqlite3_errmsg(db), ec) {}
error(sqlite3* db, int result) : error(db, {result, error_category()}) {}
error(sqlite3* db) : error(db, ::sqlite3_extended_errcode(db)) {}
std::error_code code() const { return ec; }
};
// sqlite error conditions for primary and extended result codes
//
// 'primary' error_conditions will match 'primary' error_codes as well as any
// 'extended' error_codes whose lowest 8 bits match that primary code. for
// example, the error_condition for SQLITE_CONSTRAINT will match the error_codes
// SQLITE_CONSTRAINT and SQLITE_CONSTRAINT_*
enum class errc {
// primary result codes
ok = SQLITE_OK,
busy = SQLITE_BUSY,
constraint = SQLITE_CONSTRAINT,
row = SQLITE_ROW,
done = SQLITE_DONE,
// extended result codes
primary_key_constraint = SQLITE_CONSTRAINT_PRIMARYKEY,
foreign_key_constraint = SQLITE_CONSTRAINT_FOREIGNKEY,
unique_constraint = SQLITE_CONSTRAINT_UNIQUE,
// ..add conditions as needed
};
inline std::error_code make_error_code(errc e)
{
return {static_cast<int>(e), error_category()};
}
inline std::error_condition make_error_condition(errc e)
{
return {static_cast<int>(e), error_category()};
}
} // namespace rgw::dbstore::sqlite
namespace std {
// enable implicit conversions from sqlite::errc to std::error_condition
template<> struct is_error_condition_enum<
rgw::dbstore::sqlite::errc> : public true_type {};
} // namespace std
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