mirror of
https://github.com/matrix-construct/construct
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54 lines
1.7 KiB
C++
54 lines
1.7 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_ROOM_STATE_FETCH_H
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/// Fetch and determine the latest head information from all servers.
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struct ircd::m::room::state::fetch
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{
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struct opts;
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using closure = std::function<bool (const m::event::id &, const string_view &)>;
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static conf::item<milliseconds> timeout;
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/// Count of responding servers.
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size_t respond {0};
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/// Total number of states reported from all servers (including duplicates)
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size_t responses {0};
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/// Total number of concurrences for non-existent states.
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size_t concur {0};
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/// Total number of concurrences for existing states.
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size_t exists {0};
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/// Running (and final) results when opts.unique=true; otherwise the
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/// closure is the only way to receive results.
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std::set<event::id::buf, std::less<>> result;
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// Primary operation; synchronous construction with results provided to
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// closure asynchronously.
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fetch(const opts &, const closure & = {});
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};
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struct ircd::m::room::state::fetch::opts
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{
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/// Room apropos.
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m::room room;
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/// When true, results are stored in the result set and duplicate results
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/// are not provided to the closure. When false, the result set is not used.
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bool unique {true};
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/// When true, results may include events this server already has executed.
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bool existing {false};
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};
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