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construct/include/ircd/db.h

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2.4 KiB
C++

/*
* Copyright (C) 2016 Charybdis Development Team
* Copyright (C) 2016 Jason Volk <jason@zemos.net>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice is present in all copies.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
#pragma once
#define HAVE_IRCD_DB_H
namespace rocksdb
{
struct DB;
}
namespace ircd {
namespace db {
IRCD_EXCEPTION(ircd::error, error)
IRCD_EXCEPTION(error, not_found)
IRCD_EXCEPTION(error, corruption)
IRCD_EXCEPTION(error, not_supported)
IRCD_EXCEPTION(error, invalid_argument)
IRCD_EXCEPTION(error, io_error)
IRCD_EXCEPTION(error, merge_in_progress)
IRCD_EXCEPTION(error, incomplete)
IRCD_EXCEPTION(error, shutdown_in_progress)
IRCD_EXCEPTION(error, timed_out)
IRCD_EXCEPTION(error, aborted)
IRCD_EXCEPTION(error, busy)
IRCD_EXCEPTION(error, expired)
IRCD_EXCEPTION(error, try_again)
std::string path(const std::string &name);
struct opts
{
bool create_if_missing = true;
};
struct read_opts
{
};
struct write_opts
{
};
class handle
{
std::unique_ptr<struct meta> meta;
std::unique_ptr<rocksdb::DB> d;
public:
using char_closure = std::function<void (const char *, size_t)>;
using string_closure = std::function<void (const std::string &)>;
bool has(const std::string &key, const read_opts & = {});
void get(const std::string &key, const char_closure &, const read_opts & = {});
void set(const std::string &key, const std::string &value, const write_opts & = {});
handle(const std::string &name, const opts &opts = {});
~handle() noexcept;
};
struct init
{
init();
~init() noexcept;
};
} // namespace db
} // namespace ircd