63 lines
1.3 KiB
C++
63 lines
1.3 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2019
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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/utils/common.h"
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#include "td/utils/TimedStat.h"
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namespace td {
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class FloodControlFast {
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public:
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uint32 add_event(int32 now) {
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for (auto &limit : limits_) {
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limit.stat_.add_event(CounterStat::Event(), now);
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if (limit.stat_.get_stat(now).count_ > limit.count_) {
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wakeup_at_ = max(wakeup_at_, now + limit.duration_ * 2);
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}
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}
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return wakeup_at_;
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}
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uint32 get_wakeup_at() {
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return wakeup_at_;
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}
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void add_limit(uint32 duration, int32 count) {
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limits_.push_back({TimedStat<CounterStat>(duration, 0), duration, count});
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}
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void clear_events() {
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for (auto &limit : limits_) {
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limit.stat_.clear_events();
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}
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wakeup_at_ = 0;
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}
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private:
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class CounterStat {
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public:
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struct Event {};
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int32 count_ = 0;
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void on_event(Event e) {
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count_++;
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}
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void clear() {
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count_ = 0;
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}
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};
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uint32 wakeup_at_ = 0;
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struct Limit {
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TimedStat<CounterStat> stat_;
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uint32 duration_;
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int32 count_;
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};
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std::vector<Limit> limits_;
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};
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} // namespace td
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