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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 <memory>
#include <sqlite3.h>
#include <fmt/format.h>
#include "sqlite/statement.h"
class DoutPrefixProvider;
namespace rgw::dbstore::sqlite {
// owning sqlite3 pointer
struct db_deleter {
void operator()(sqlite3* p) const { ::sqlite3_close(p); }
};
using db_ptr = std::unique_ptr<sqlite3, db_deleter>;
// open the database file or throw on error
db_ptr open_database(const char* filename, int flags);
struct Connection {
db_ptr db;
// map of statements, prepared on first use
std::map<std::string_view, stmt_ptr> statements;
explicit Connection(db_ptr db) : db(std::move(db)) {}
};
// sqlite connection factory for ConnectionPool
class ConnectionFactory {
std::string uri;
int flags;
public:
ConnectionFactory(std::string uri, int flags)
: uri(std::move(uri)), flags(flags) {}
auto operator()(const DoutPrefixProvider* dpp)
-> std::unique_ptr<Connection>
{
auto db = open_database(uri.c_str(), flags);
return std::make_unique<Connection>(std::move(db));
}
};
} // namespace rgw::dbstore::sqlite
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