tdlight-telegram-bot-api/telegram-bot-api/Stats.h

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//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2021
//
// 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/actor/actor.h"
#include "td/utils/common.h"
#include "td/utils/logging.h"
#include "td/utils/port/Stat.h"
#include "td/utils/Time.h"
#include "td/utils/TimedStat.h"
#include <mutex>
namespace telegram_bot_api {
struct StatItem {
td::string key_;
td::string value_;
};
class CpuStat {
public:
void on_event(const td::CpuStat &event) {
if (cnt_ == 0) {
first_ = event;
cnt_ = 1;
} else {
cnt_ = 2;
last_ = event;
}
}
td::vector<StatItem> as_vector() const;
private:
int cnt_ = 0;
td::CpuStat first_;
td::CpuStat last_;
};
class ServerCpuStat {
public:
static ServerCpuStat &instance() {
static ServerCpuStat stat;
return stat;
}
static void update(double now) {
auto r_event = td::cpu_stat();
if (r_event.is_error()) {
return;
}
instance().add_event(r_event.ok(), now);
LOG(WARNING) << "CPU usage: " << instance().stat_[1].get_stat(now).as_vector()[0].value_;
}
td::string get_description() const;
td::vector<StatItem> as_vector(double now);
private:
static constexpr std::size_t SIZE = 4;
static constexpr const char *DESCR[SIZE] = {"inf", "5sec", "1min", "1hour"};
static constexpr int DURATIONS[SIZE] = {0, 5, 60, 60 * 60};
std::mutex mutex_;
td::TimedStat<CpuStat> stat_[SIZE];
ServerCpuStat();
void add_event(const td::CpuStat &stat, double now);
};
class ServerBotInfo {
public:
td::string id_;
td::string token_;
td::string username_;
td::string webhook_;
bool has_webhook_certificate_ = false;
td::int32 head_update_id_ = 0;
td::int32 tail_update_id_ = 0;
td::int32 webhook_max_connections_ = 0;
std::size_t pending_update_count_ = 0;
double start_time_ = 0;
};
struct ServerBotStat {
double request_count_ = 0;
double request_bytes_ = 0;
double request_file_count_ = 0;
double request_files_bytes_ = 0;
td::int64 request_files_max_bytes_ = 0;
double response_count_ = 0;
double response_count_ok_ = 0;
double response_count_error_ = 0;
double response_bytes_ = 0;
double update_count_ = 0;
void normalize(double duration);
void add(const ServerBotStat &stat);
struct Update {};
void on_event(const Update &update) {
update_count_ += 1;
}
struct Response {
bool ok_;
size_t size_;
td::int64 file_count_;
td::int64 files_size_;
};
void on_event(const Response &response) {
response_count_++;
if (response.ok_) {
response_count_ok_++;
} else {
response_count_error_++;
}
response_bytes_ += static_cast<double>(response.size_);
}
struct Request {
td::int64 size_;
td::int64 file_count_;
td::int64 files_size_;
td::int64 files_max_size_;
};
void on_event(const Request &request) {
request_count_++;
request_bytes_ += static_cast<double>(request.size_);
request_file_count_ += static_cast<double>(request.file_count_);
request_files_bytes_ += static_cast<double>(request.files_size_);
request_files_max_bytes_ = td::max(request_files_max_bytes_, request.files_max_size_);
}
td::vector<StatItem> as_vector() const;
};
class BotStatActor final : public td::Actor {
public:
BotStatActor() = default;
explicit BotStatActor(td::ActorId<BotStatActor> parent) : parent_(parent) {
for (std::size_t i = 0; i < SIZE; i++) {
stat_[i] = td::TimedStat<ServerBotStat>(DURATIONS[i], td::Time::now());
}
register_actor("ServerBotStat", this).release();
}
BotStatActor(const BotStatActor &) = delete;
BotStatActor &operator=(const BotStatActor &other) = delete;
BotStatActor(BotStatActor &&) = default;
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BotStatActor &operator=(BotStatActor &&other) noexcept {
if (!empty()) {
do_stop();
}
this->Actor::operator=(std::move(other));
std::move(other.stat_, other.stat_ + SIZE, stat_);
parent_ = other.parent_;
return *this;
}
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~BotStatActor() final = default;
template <class EventT>
void add_event(const EventT &event, double now) {
last_activity_timestamp_ = now;
for (auto &stat : stat_) {
stat.add_event(event, now);
}
on_event(event);
if (!parent_.empty()) {
send_closure(parent_, &BotStatActor::add_event<EventT>, event, now);
}
}
td::vector<StatItem> as_vector(double now);
td::string get_description() const;
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double get_score(double now);
td::int64 get_active_request_count() const;
td::int64 get_active_file_upload_bytes() const;
td::int64 get_active_file_upload_count() const;
bool is_active(double now) const;
private:
static constexpr std::size_t SIZE = 4;
static constexpr const char *DESCR[SIZE] = {"inf", "5sec", "1min", "1hour"};
static constexpr int DURATIONS[SIZE] = {0, 5, 60, 60 * 60};
td::TimedStat<ServerBotStat> stat_[SIZE];
td::ActorId<BotStatActor> parent_;
double last_activity_timestamp_ = -1e9;
td::int64 active_request_count_ = 0;
td::int64 active_file_upload_bytes_ = 0;
td::int64 active_file_upload_count_ = 0;
void on_event(const ServerBotStat::Update &update) {
}
void on_event(const ServerBotStat::Response &response) {
active_request_count_--;
active_file_upload_count_ -= response.file_count_;
active_file_upload_bytes_ -= response.files_size_;
CHECK(active_request_count_ >= 0);
CHECK(active_file_upload_bytes_ >= 0);
}
void on_event(const ServerBotStat::Request &request) {
active_request_count_++;
active_file_upload_count_ += request.file_count_;
active_file_upload_bytes_ += request.files_size_;
}
};
} // namespace telegram_bot_api