113 lines
2.7 KiB
C++
113 lines
2.7 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2021
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#pragma once
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#include "td/telegram/net/DcId.h"
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#include "td/telegram/net/DcOptions.h"
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#include "td/utils/Container.h"
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#include "td/utils/port/IPAddress.h"
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#include "td/utils/Status.h"
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#include "td/utils/Time.h"
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#include <map>
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namespace td {
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class DcOptionsSet {
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public:
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void add_dc_options(DcOptions dc_options);
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DcOptions get_dc_options() const;
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struct Stat {
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double ok_at{-1000};
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double error_at{-1001};
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double check_at{-1002};
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enum class State : int32 { Ok, Error, Checking };
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void on_ok() {
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ok_at = Time::now_cached();
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}
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void on_error() {
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error_at = Time::now_cached();
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}
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void on_check() {
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check_at = Time::now_cached();
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}
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bool is_ok() const {
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return state() == State::Ok;
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}
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State state() const {
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if (ok_at > error_at && ok_at > check_at) {
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return State::Ok;
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}
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if (check_at > ok_at && check_at > error_at) {
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return State::Checking;
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}
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return State::Error;
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}
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};
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struct ConnectionInfo {
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DcOption *option{nullptr};
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bool use_http{false};
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size_t order{0};
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bool should_check{false};
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Stat *stat{nullptr};
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};
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vector<ConnectionInfo> find_all_connections(DcId dc_id, bool allow_media_only, bool use_static, bool prefer_ipv6,
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bool only_http);
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Result<ConnectionInfo> find_connection(DcId dc_id, bool allow_media_only, bool use_static, bool prefer_ipv6,
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bool only_http);
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void reset();
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private:
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enum class State : int32 { Error, Ok, Checking };
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struct OptionStat {
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Stat tcp_stat;
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Stat http_stat;
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};
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struct DcOptionInfo {
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DcOption option;
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int64 stat_id;
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size_t pos;
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size_t order = 0;
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DcOptionInfo(DcOption &&option, size_t pos) : option(std::move(option)), pos(pos) {
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}
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};
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struct DcOptionId {
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size_t pos;
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auto as_tie() const {
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return pos;
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}
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bool operator==(const DcOptionId &other) const {
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return as_tie() == other.as_tie();
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}
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bool operator<(const DcOptionId &other) const {
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return as_tie() < other.as_tie();
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}
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};
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std::vector<unique_ptr<DcOptionInfo>> options_;
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std::vector<DcOptionId> ordered_options_;
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std::map<IPAddress, int64> option_to_stat_id_;
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Container<unique_ptr<OptionStat>> option_stats_;
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DcOptionInfo *register_dc_option(DcOption &&option);
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void init_option_stat(DcOptionInfo *option_info);
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OptionStat *get_option_stat(const DcOptionInfo *option_info);
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};
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} // namespace td
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