mirror of
https://github.com/matrix-construct/construct
synced 2024-11-15 22:41:12 +01:00
103 lines
3.2 KiB
C++
103 lines
3.2 KiB
C++
// Matrix Construct
|
|
//
|
|
// Copyright (C) Matrix Construct Developers, Authors & Contributors
|
|
// Copyright (C) 2016-2018 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_FEDS_H
|
|
|
|
/// Concurrent federation request interface. This fronts several of the m::v1
|
|
/// requests and conducts them to all servers in a room (e.g. m::room::origins)
|
|
/// at the same time. The hybrid control flow of this interface is best suited
|
|
/// to the real-world uses of these operations.
|
|
///
|
|
/// Each call in this interface is synchronous and will block the ircd::ctx
|
|
/// until it returns. The return value is the for_each-protocol result based on your
|
|
/// closure (if the closure ever returns false, the function also returns false).
|
|
///
|
|
/// The closure is invoked asynchronously as results come in. If the closure
|
|
/// returns false, the interface function will return immediately and all
|
|
/// pending requests will go out of scope and may be cancelled as per
|
|
/// ircd::server decides.
|
|
namespace ircd::m::feds
|
|
{
|
|
enum class op :uint8_t;
|
|
struct opts;
|
|
struct result;
|
|
struct acquire;
|
|
using closure = std::function<bool (const result &)>;
|
|
};
|
|
|
|
struct ircd::m::feds::acquire
|
|
{
|
|
acquire(const vector_view<const opts> &, const closure &);
|
|
acquire(const opts &, const closure &);
|
|
};
|
|
|
|
struct ircd::m::feds::result
|
|
{
|
|
const opts *request;
|
|
string_view origin;
|
|
std::exception_ptr eptr;
|
|
json::object object;
|
|
json::array array;
|
|
};
|
|
|
|
struct ircd::m::feds::opts
|
|
{
|
|
/// Operation type
|
|
enum op op {(enum op)0};
|
|
|
|
/// Timeout for this operation. For a batch of operations, this system
|
|
/// may attempt -- but does not guarantee -- to cancel timed-out requests
|
|
/// before the highest timeout value in the batch.
|
|
milliseconds timeout {20000L};
|
|
|
|
/// Apropos room_id: this is almost always required for this interface
|
|
/// because the servers in the room is used for the request target set.
|
|
m::room::id room_id;
|
|
|
|
/// Apropos event_id for several operations.
|
|
m::event::id event_id;
|
|
|
|
/// Apropos user_id for several operations.
|
|
m::user::id user_id;
|
|
|
|
/// Misc string argument registers. These convey values for special
|
|
/// features in individual operations.
|
|
string_view arg[4]; // misc argv
|
|
|
|
/// Misc integer argument registers. These convey values for special
|
|
/// features in individual operations.
|
|
uint64_t argi[4]; // misc integer argv
|
|
|
|
/// Whether exceptions from the supplied result closure are propagated.
|
|
bool nothrow_closure {false};
|
|
|
|
/// When nothrow_closure is true, this determines whether or not to
|
|
/// continue receiving results or to break and return. True to continue.
|
|
bool nothrow_closure_retval {true};
|
|
|
|
/// Whether to call the user's result closure for error results, which
|
|
/// would have the eptr set. When this is false, the closure is never
|
|
/// invoked with eptr set and nothrow_closure_retval is used to continue.
|
|
bool closure_errors {true};
|
|
};
|
|
|
|
enum class ircd::m::feds::op
|
|
:uint8_t
|
|
{
|
|
noop,
|
|
head,
|
|
auth ,
|
|
event,
|
|
state,
|
|
backfill,
|
|
version,
|
|
keys,
|
|
};
|