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construct/include/ircd/db.h
2017-04-04 16:10:29 -07:00

122 lines
3.3 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
// IRCd Database
//
// Please see db/README.md for documentation.
//
namespace ircd {
namespace db {
struct cell;
struct row;
struct column;
struct database;
// Errors for the database subsystem. The exceptions that use _HIDENAME
// are built from RocksDB errors which already have an info string with
// an included name.
//
IRCD_EXCEPTION(ircd::error, error)
IRCD_EXCEPTION(error, not_found)
IRCD_EXCEPTION_HIDENAME(error, corruption)
IRCD_EXCEPTION_HIDENAME(error, not_supported)
IRCD_EXCEPTION_HIDENAME(error, invalid_argument)
IRCD_EXCEPTION_HIDENAME(error, io_error)
IRCD_EXCEPTION_HIDENAME(error, merge_in_progress)
IRCD_EXCEPTION_HIDENAME(error, incomplete)
IRCD_EXCEPTION_HIDENAME(error, shutdown_in_progress)
IRCD_EXCEPTION_HIDENAME(error, timed_out)
IRCD_EXCEPTION_HIDENAME(error, aborted)
IRCD_EXCEPTION_HIDENAME(error, busy)
IRCD_EXCEPTION_HIDENAME(error, expired)
IRCD_EXCEPTION_HIDENAME(error, try_again)
// db subsystem has its own logging facility
extern struct log::log log;
} // namespace db
} // namespace ircd
//
// These are forward declarations to objects we may carry a pointer to.
// Users of ircd::db should not be dealing with these types.
//
namespace rocksdb
{
struct DB;
struct Slice;
struct Options;
struct DBOptions;
struct ColumnFamilyOptions;
struct PlainTableOptions;
struct BlockBasedTableOptions;
struct Cache;
struct Iterator;
struct ColumnFamilyHandle;
struct Snapshot;
}
//
// Misc utils
//
namespace ircd {
namespace db {
rocksdb::Slice slice(const string_view &);
string_view slice(const rocksdb::Slice &);
bool valid(const rocksdb::Iterator &);
string_view key(const rocksdb::Iterator &);
string_view val(const rocksdb::Iterator &);
std::string path(const std::string &name);
std::vector<std::string> available();
void log_rdb_perf_context(const bool &all = true);
} // namespace db
} // namespace ircd
#include "db/delta.h"
#include "db/database.h"
#include "db/opts.h"
#include "db/column.h"
#include "db/cell.h"
#include "db/row.h"
namespace ircd {
namespace db {
std::string merge_operator(const string_view &, const std::pair<string_view, string_view> &);
} // namespace db
} // namespace ircd
namespace ircd {
using database = db::database;
} // namespace ircd