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construct/include/ircd/m/event.h
2018-01-25 12:15:40 -08:00

136 lines
4.1 KiB
C++

/*
* charybdis: 21st Century IRC++d
*
* 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_M_EVENT_H
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wsubobject-linkage"
namespace ircd::m
{
struct event;
bool my(const id::event &);
bool my(const event &);
size_t degree(const event &);
std::string pretty(const event &);
std::string pretty_oneline(const event &);
id::event event_id(const event &, id::event::buf &buf, const const_raw_buffer &hash);
id::event event_id(const event &, id::event::buf &buf);
id::event event_id(const event &);
}
/// The _Main Event_. Most fundamental primitive of the Matrix protocol.
///
/// This json::tuple provides at least all of the legal members of the matrix
/// standard event. This is the fundamental building block of the matrix
/// system. Rooms are collections of events. Messages between servers are
/// passed as bundles of events (or directly).
///
/// Due to the ubiquitous usage, and diversity of extensions, the class
/// member interface is somewhat minimal.
///
/// It is better to have 100 functions operate on one data structure than
/// to have 10 functions operate on 10 data structures.
/// -Alan Perlis
///
struct ircd::m::event
:json::tuple
<
json::property<name::auth_events, json::array>,
json::property<name::content, json::object>,
json::property<name::depth, int64_t>,
json::property<name::event_id, json::string>,
json::property<name::hashes, json::object>,
json::property<name::membership, json::string>,
json::property<name::origin, json::string>,
json::property<name::origin_server_ts, time_t>,
json::property<name::prev_events, json::array>,
json::property<name::prev_state, json::array>,
json::property<name::room_id, json::string>,
json::property<name::sender, json::string>,
json::property<name::signatures, json::object>,
json::property<name::state_key, json::string>,
json::property<name::type, json::string>,
json::property<name::unsigned_, string_view>
>
{
struct fetch;
struct sync;
struct prev;
// Common convenience aliases
using id = m::id::event;
using closure = std::function<void (const event &)>;
using closure_bool = std::function<bool (const event &)>;
static database *events;
using super_type::tuple;
using super_type::operator=;
event(const id &, const mutable_buffer &buf);
event() = default;
};
namespace ircd::m
{
void for_each(const event::prev &, const std::function<void (const event::id &)> &);
size_t degree(const event::prev &);
size_t count(const event::prev &);
std::string pretty(const event::prev &);
std::string pretty_oneline(const event::prev &);
}
struct ircd::m::event::prev
:json::tuple
<
json::property<name::auth_events, json::array>,
json::property<name::prev_state, json::array>,
json::property<name::prev_events, json::array>
>
{
enum cond :int;
using super_type::tuple;
using super_type::operator=;
};
inline bool
ircd::m::my(const event &event)
{
return my(event::id(at<"event_id"_>(event)));
}
inline bool
ircd::m::my(const id::event &event_id)
{
return self::host(event_id.host());
}
#pragma GCC diagnostic pop