mirror of
https://github.com/matrix-construct/construct
synced 2024-11-17 23:40:57 +01:00
92 lines
2.7 KiB
C++
92 lines
2.7 KiB
C++
// Matrix Construct
|
|
//
|
|
// Copyright (C) Matrix Construct Developers, Authors & Contributors
|
|
// Copyright (C) 2016-2019 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. The
|
|
// full license for this software is available in the LICENSE file.
|
|
|
|
#pragma once
|
|
#define HAVE_IRCD_M_DBS_EVENT_REFS_H
|
|
|
|
namespace ircd::m::dbs
|
|
{
|
|
constexpr size_t EVENT_REFS_KEY_MAX_SIZE
|
|
{
|
|
sizeof(event::idx) + sizeof(event::idx)
|
|
};
|
|
|
|
constexpr size_t ref_shift
|
|
{
|
|
8 * (sizeof(event::idx) - sizeof(ref))
|
|
};
|
|
|
|
constexpr event::idx ref_mask
|
|
{
|
|
0xFFUL << ref_shift
|
|
};
|
|
|
|
// event_idx | ref_type, event_idx
|
|
extern db::domain event_refs;
|
|
|
|
string_view
|
|
event_refs_key(const mutable_buffer &out,
|
|
const event::idx &tgt,
|
|
const ref &type,
|
|
const event::idx &referer);
|
|
|
|
std::tuple<ref, event::idx>
|
|
event_refs_key(const string_view &amalgam);
|
|
|
|
string_view
|
|
reflect(const ref &);
|
|
}
|
|
|
|
namespace ircd::m::dbs::desc
|
|
{
|
|
extern conf::item<size_t> events__event_refs__block__size;
|
|
extern conf::item<size_t> events__event_refs__meta_block__size;
|
|
extern conf::item<size_t> events__event_refs__cache__size;
|
|
extern conf::item<size_t> events__event_refs__cache_comp__size;
|
|
extern const db::prefix_transform events__event_refs__pfx;
|
|
extern const db::comparator events__event_refs__cmp;
|
|
extern const db::descriptor events__event_refs;
|
|
}
|
|
|
|
/// Types of references indexed by event_refs. This is a single byte integer,
|
|
/// which should be plenty of namespace. Internally event_refs_key() and
|
|
/// event_refs store this in a high order byte of an event::idx integer. This
|
|
/// is an alternative to having separate columns for each type of reference.
|
|
///
|
|
/// NOTE: These values are written to the database and cannot be changed to
|
|
/// maintain ABI stability.
|
|
///
|
|
/// NOTE: These values not bit-flags and the entire integer space is in use.
|
|
///
|
|
enum class ircd::m::dbs::ref
|
|
:uint8_t
|
|
{
|
|
/// All events which reference this event in their `prev_events`.
|
|
NEXT = 0x00,
|
|
|
|
/// All power events which reference this event in their `auth_events`.
|
|
/// Non-auth/non-power events are not involved in this graph at all.
|
|
NEXT_AUTH = 0x01,
|
|
|
|
/// The next states in the transitions for a (type,state_key) cell.
|
|
NEXT_STATE = 0x02,
|
|
|
|
/// The previous states in the transitions for a (type,state_key) cell.
|
|
PREV_STATE = 0x04,
|
|
|
|
/// All m.receipt's which target this event.
|
|
M_RECEIPT__M_READ = 0x10,
|
|
|
|
/// All m.relates_to's which target this event.
|
|
M_RELATES = 0x20,
|
|
|
|
/// All m.room.redaction's which target this event.
|
|
M_ROOM_REDACTION = 0x40,
|
|
};
|