mirror of
https://github.com/matrix-construct/construct
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141 lines
3.8 KiB
C++
141 lines
3.8 KiB
C++
// The Construct
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//
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// Copyright (C) The Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2020 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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#pragma once
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#define HAVE_IRCD_M_SYNC_DATA_H
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namespace ircd
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{
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struct client;
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}
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namespace ircd::m::sync
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{
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struct data;
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string_view loghead(const data &);
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bool apropos(const data &, const event::idx &);
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bool apropos(const data &, const event::id &);
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bool apropos(const data &, const event &);
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}
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/// sync::data is the primary argument structure passed around to each
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/// sync::item handler to effect a /sync. This contains everything the item
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/// needs to provide response content.
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///
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struct ircd::m::sync::data
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:instance_list<ircd::m::sync::data>
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{
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/// Range to synchronize. Starting index is inclusive, ending index is
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/// exclusive. Generally the starting index is a since token, and ending
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/// index is one beyond the vm::current_sequence and used for next_batch.
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m::events::range range;
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/// Whether to enable phased sync mode. The range.first will be <= 0
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/// in this case, and only handlers with the phased feature
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bool phased {false};
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/// Prefetch mode. Supporting item handlers will initiate prefetches for
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/// their data without writing to output.
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bool prefetch {false};
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/// Statistics tracking. If null, stats won't be accumulated for the sync.
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sync::stats *stats {nullptr};
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/// The client. This may be null if sync is being called internally.
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ircd::client *client {nullptr};
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/// Parsed arguments for the request.
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const sync::args *args {nullptr};
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/// User apropos.
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const m::user user;
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/// User's room convenience.
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const m::user::room user_room;
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/// User's room state convenience.
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const m::room::state user_state;
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/// User's rooms interface convenience.
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const m::user::rooms user_rooms;
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/// Buffer for supplied or fetched filter.
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const std::string filter_buf;
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/// Structured parse of the above filter.
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const m::filter filter;
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/// User's device ID from the access token.
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const device::id device_id;
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/// Event apropos (may be null for polylog).
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const m::event *event {nullptr};
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/// Event room's interface convenience.
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const m::room *room {nullptr};
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/// User's membership in event's room.
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string_view membership;
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/// Event's depth in room.
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int64_t room_depth {0}; // if *room
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/// Event room's top-head sequence number
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event::idx room_head {0}; // if *room
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/// Event's sequence number
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event::idx event_idx {0}; // if *event
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/// Client transaction_id apropos
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string_view client_txnid;
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/// The json::stack master object
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json::stack *out {nullptr};
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/// Set by a linear sync handler; indicates the handler cannot fulfill
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/// the request because the polylog sync handler should be used instead;
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bool reflow_full_state {false};
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data(const m::user &user,
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const m::events::range &range,
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ircd::client *const &client = nullptr,
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json::stack *const &out = nullptr,
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sync::stats *const &stats = nullptr,
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const sync::args *const &args = nullptr,
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const device::id &device_id = {});
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data(data &&) = delete;
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data(const data &) = delete;
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~data() noexcept;
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};
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inline bool
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ircd::m::sync::apropos(const data &d,
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const event &event)
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{
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return apropos(d, index(std::nothrow, event));
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}
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inline bool
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ircd::m::sync::apropos(const data &d,
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const event::id &event_id)
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{
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return apropos(d, index(std::nothrow, event_id));
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}
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inline bool
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ircd::m::sync::apropos(const data &d,
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const event::idx &event_idx)
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{
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return d.phased ||
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(event_idx >= d.range.first && event_idx < d.range.second);
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}
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