tdlight/tdutils/td/utils/FloodControlFast.h

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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#pragma once
#include "td/utils/common.h"
#include "td/utils/TimedStat.h"
#include <algorithm>
namespace td {
class FloodControlFast {
public:
uint32 add_event(int32 now) {
for (auto &limit : limits_) {
limit.stat_.add_event(CounterStat::Event(), now);
if (limit.stat_.get_stat(now).count_ > limit.count_) {
wakeup_at_ = std::max(wakeup_at_, now + limit.duration_ * 2);
}
}
return wakeup_at_;
}
uint32 get_wakeup_at() {
return wakeup_at_;
}
void add_limit(uint32 duration, int32 count) {
limits_.push_back({TimedStat<CounterStat>(duration, 0), duration, count});
}
void clear_events() {
for (auto &limit : limits_) {
limit.stat_.clear_events();
}
wakeup_at_ = 0;
}
private:
class CounterStat {
public:
struct Event {};
int32 count_ = 0;
void on_event(Event e) {
count_++;
}
void clear() {
count_ = 0;
}
};
uint32 wakeup_at_ = 0;
struct Limit {
TimedStat<CounterStat> stat_;
uint32 duration_;
int32 count_;
};
std::vector<Limit> limits_;
};
} // namespace td