mirror of
https://github.com/matrix-construct/construct
synced 2024-07-02 08:48:18 +02:00
106 lines
3.1 KiB
C++
106 lines
3.1 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2018 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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// Fetch unit state
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namespace ircd::m::fetch
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{
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struct request; // m/fetch.h
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struct evaltab;
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static bool operator<(const request &a, const request &b) noexcept;
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static bool operator<(const request &a, const string_view &b) noexcept;
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static bool operator<(const string_view &a, const request &b) noexcept;
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extern ctx::dock dock;
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extern std::set<request, std::less<>> requests;
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extern std::multimap<room::id, request *> rooms;
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extern std::deque<decltype(requests)::iterator> complete;
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extern ctx::context eval_context;
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extern ctx::context request_context;
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extern hookfn<vm::eval &> hook;
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extern conf::item<seconds> auth_timeout;
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extern conf::item<seconds> timeout;
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extern conf::item<bool> enable;
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static bool timedout(const request &, const time_t &now);
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static string_view select_origin(request &, const string_view &);
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static string_view select_random_origin(request &);
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static void finish(request &);
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static void retry(request &);
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static bool start(request &, m::v1::event::opts &);
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static bool start(request &);
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static bool handle(request &);
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template<class... args> static bool submit(const event::id &, const room::id &, const size_t &bufsz = 8_KiB, args&&...);
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static void eval_handle(const decltype(requests)::iterator &);
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static void eval_handle();
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static void eval_worker();
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static void request_handle(const decltype(requests)::iterator &);
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static void request_handle();
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static size_t request_cleanup();
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static void request_worker();
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static void hook_handle_prev(const event &, vm::eval &, evaltab &, const room &);
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static void hook_handle_auth(const event &, vm::eval &, evaltab &, const room &);
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static void hook_handle(const event &, vm::eval &);
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static void init();
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static void fini();
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}
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struct ircd::m::fetch::evaltab
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{
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size_t auth_count {0};
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size_t auth_exists {0};
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size_t prev_count {0};
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size_t prev_exists {0};
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size_t prev_fetching {0};
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size_t prev_fetched {0};
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};
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template<class... args>
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bool
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ircd::m::fetch::submit(const m::event::id &event_id,
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const m::room::id &room_id,
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const size_t &bufsz,
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args&&... a)
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{
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auto it
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{
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requests.lower_bound(string_view(event_id))
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};
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if(it != end(requests) && it->event_id == event_id)
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{
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assert(it->room_id == room_id);
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return false;
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}
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else try
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{
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it = requests.emplace_hint(it, room_id, event_id, bufsz, std::forward<args>(a)...);
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auto &request(const_cast<fetch::request &>(*it));
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while(!start(request)) request.origin = {};
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return true;
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}
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catch(const std::exception &e)
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{
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log::error
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{
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m::log, "Failed to start any fetch for %s in %s :%s",
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string_view{event_id},
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string_view{room_id},
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e.what(),
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};
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requests.erase(it);
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return false;
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};
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}
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