tdlight-team/tdlight-telegram-bot-api
tdlight-team/tdlight-telegram-bot-api
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tdlight-telegram-bot-api/telegram-bot-api/ClientManager.cpp

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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)
//
#include "telegram-bot-api/ClientManager.h"
#include "telegram-bot-api/Client.h"
#include "telegram-bot-api/ClientParameters.h"
#include "telegram-bot-api/WebhookActor.h"
#include "td/telegram/ClientActor.h"
#include "td/db/binlog/Binlog.h"
#include "td/db/binlog/ConcurrentBinlog.h"
#include "td/db/BinlogKeyValue.h"
#include "td/db/DbKey.h"
#include "td/db/TQueue.h"
#include "td/net/HttpFile.h"
#include "td/actor/MultiPromise.h"
#include "td/utils/common.h"
#include "td/utils/format.h"
#include "td/utils/logging.h"
#include "td/utils/misc.h"
#include "td/utils/Parser.h"
#include "td/utils/port/IPAddress.h"
#include "td/utils/port/Stat.h"
#include "td/utils/Slice.h"
#include "td/utils/SliceBuilder.h"
#include "td/utils/StackAllocator.h"
#include "td/utils/StringBuilder.h"
#include "td/utils/Time.h"
#include <map>
#include <tuple>
namespace telegram_bot_api {
void ClientManager::close(td::Promise<td::Unit> &&promise) {
close_promises_.push_back(std::move(promise));
if (close_flag_) {
return;
}
close_flag_ = true;
auto ids = clients_.ids();
for (auto id : ids) {
auto *client_info = clients_.get(id);
CHECK(client_info);
send_closure(client_info->client_, &Client::close);
}
if (ids.empty()) {
close_db();
}
}
void ClientManager::send(PromisedQueryPtr query) {
if (close_flag_) {
// automatically send 429
return;
}
td::string token = query->token().str();
if (token[0] == '0' || token.size() > 80u || token.find('/') != td::string::npos ||
token.find(':') == td::string::npos) {
return fail_query(401, "Unauthorized: invalid token specified", std::move(query));
}
auto r_user_id = td::to_integer_safe<td::int64>(query->token().substr(0, token.find(':')));
if (r_user_id.is_error() || r_user_id.ok() < 0 || !token_range_(r_user_id.ok())) {
return fail_query(421, "Misdirected Request: unallowed token specified", std::move(query));
}
if (query->is_test_dc()) {
token += "/test";
}
auto id_it = token_to_id_.find(token);
if (id_it == token_to_id_.end()) {
std::string ip_address;
if (query->peer_address().is_valid() && !query->peer_address().is_reserved()) { // external connection
ip_address = query->peer_address().get_ip_str().str();
} else {
// invalid peer address or connection from the local network
ip_address = query->get_header("x-real-ip").str();
}
if (!ip_address.empty()) {
td::IPAddress tmp;
tmp.init_host_port(ip_address, 0).ignore();
tmp.clear_ipv6_interface();
if (tmp.is_valid()) {
ip_address = tmp.get_ip_str().str();
}
}
LOG(DEBUG) << "Receive incoming query for new bot " << token << " from " << query->peer_address();
if (!ip_address.empty()) {
LOG(DEBUG) << "Check Client creation flood control for IP address " << ip_address;
auto res = flood_controls_.emplace(std::move(ip_address), td::FloodControlFast());
auto &flood_control = res.first->second;
if (res.second) {
flood_control.add_limit(60, 20); // 20 in a minute
flood_control.add_limit(60 * 60, 600); // 600 in an hour
}
td::uint32 now = static_cast<td::uint32>(td::Time::now());
td::uint32 wakeup_at = flood_control.get_wakeup_at();
if (wakeup_at > now) {
LOG(INFO) << "Failed to create Client from IP address " << ip_address;
return query->set_retry_after_error(static_cast<int>(wakeup_at - now) + 1);
}
flood_control.add_event(static_cast<td::int32>(now));
}
auto tqueue_id = get_tqueue_id(r_user_id.ok(), query->is_test_dc());
if (active_client_count_.find(tqueue_id) != active_client_count_.end()) {
// return query->set_retry_after_error(1);
}
auto id =
clients_.create(ClientInfo{BotStatActor(stat_.actor_id(&stat_)), token, tqueue_id, td::ActorOwn<Client>()});
auto *client_info = clients_.get(id);
client_info->client_ = td::create_actor<Client>(PSLICE() << "Client/" << token, actor_shared(this, id),
query->token().str(), query->is_test_dc(), tqueue_id, parameters_,
client_info->stat_.actor_id(&client_info->stat_));
auto method = query->method();
if (method != "deletewebhook" && method != "setwebhook") {
auto bot_token_with_dc = PSTRING() << query->token() << (query->is_test_dc() ? ":T" : "");
auto webhook_info = parameters_->shared_data_->webhook_db_->get(bot_token_with_dc);
if (!webhook_info.empty()) {
send_closure(client_info->client_, &Client::send,
get_webhook_restore_query(bot_token_with_dc, webhook_info, parameters_->shared_data_));
}
}
std::tie(id_it, std::ignore) = token_to_id_.emplace(token, id);
}
send_closure(clients_.get(id_it->second)->client_, &Client::send,
std::move(query)); // will send 429 if the client is already closed
}
void ClientManager::get_stats(td::PromiseActor<td::BufferSlice> promise,
td::vector<std::pair<td::string, td::string>> args) {
if (close_flag_) {
promise.set_value(td::BufferSlice("Closing"));
return;
}
size_t buf_size = 1 << 14;
auto buf = td::StackAllocator::alloc(buf_size);
td::StringBuilder sb(buf.as_slice());
td::Slice id_filter;
int new_verbosity_level = -1;
td::string tag;
for (auto &arg : args) {
if (arg.first == "id") {
id_filter = arg.second;
}
if (arg.first == "v") {
auto r_new_verbosity_level = td::to_integer_safe<int>(arg.second);
if (r_new_verbosity_level.is_ok()) {
new_verbosity_level = r_new_verbosity_level.ok();
}
}
if (arg.first == "tag") {
tag = arg.second;
}
}
if (new_verbosity_level > 0) {
if (tag.empty()) {
parameters_->shared_data_->next_verbosity_level_ = new_verbosity_level;
} else {
td::ClientActor::execute(td::td_api::make_object<td::td_api::setLogTagVerbosityLevel>(tag, new_verbosity_level));
}
}
auto now = td::Time::now();
td::int32 active_bot_count = 0;
std::multimap<td::int64, td::uint64> top_bot_ids;
for (auto id : clients_.ids()) {
auto *client_info = clients_.get(id);
CHECK(client_info);
if (client_info->stat_.is_active(now)) {
active_bot_count++;
}
if (!td::begins_with(client_info->token_, id_filter)) {
continue;
}
auto stats = client_info->stat_.as_vector(now);
double score = 0.0;
for (auto &stat : stats) {
if (stat.key_ == "update_count" || stat.key_ == "request_count") {
score -= td::to_double(stat.value_);
}
}
top_bot_ids.emplace(static_cast<td::int64>(score * 1e9), id);
}
sb << stat_.get_description() << "\n";
if (id_filter.empty()) {
sb << "uptime\t" << now - parameters_->start_time_ << "\n";
sb << "bot_count\t" << clients_.size() << "\n";
sb << "active_bot_count\t" << active_bot_count << "\n";
auto r_mem_stat = td::mem_stat();
if (r_mem_stat.is_ok()) {
auto mem_stat = r_mem_stat.move_as_ok();
sb << "rss\t" << td::format::as_size(mem_stat.resident_size_) << "\n";
sb << "vm\t" << td::format::as_size(mem_stat.virtual_size_) << "\n";
sb << "rss_peak\t" << td::format::as_size(mem_stat.resident_size_peak_) << "\n";
sb << "vm_peak\t" << td::format::as_size(mem_stat.virtual_size_peak_) << "\n";
} else {
LOG(INFO) << "Failed to get memory statistics: " << r_mem_stat.error();
}
ServerCpuStat::update(td::Time::now());
auto cpu_stats = ServerCpuStat::instance().as_vector(td::Time::now());
for (auto &stat : cpu_stats) {
sb << stat.key_ << "\t" << stat.value_ << "\n";
}
sb << "buffer_memory\t" << td::format::as_size(td::BufferAllocator::get_buffer_mem()) << "\n";
sb << "active_webhook_connections\t" << WebhookActor::get_total_connections_count() << "\n";
sb << "active_requests\t" << parameters_->shared_data_->query_count_.load() << "\n";
sb << "active_network_queries\t" << td::get_pending_network_query_count(*parameters_->net_query_stats_) << "\n";
auto stats = stat_.as_vector(now);
for (auto &stat : stats) {
sb << stat.key_ << "\t" << stat.value_ << "\n";
}
}
for (auto top_bot_id : top_bot_ids) {
auto *client_info = clients_.get(top_bot_id.second);
CHECK(client_info);
auto bot_info = client_info->client_->get_actor_unsafe()->get_bot_info();
sb << "\n";
sb << "id\t" << bot_info.id_ << "\n";
sb << "uptime\t" << now - bot_info.start_time_ << "\n";
sb << "token\t" << bot_info.token_ << "\n";
sb << "username\t" << bot_info.username_ << "\n";
sb << "webhook\t" << bot_info.webhook_ << "\n";
sb << "has_custom_certificate\t" << bot_info.has_webhook_certificate_ << "\n";
sb << "head_update_id\t" << bot_info.head_update_id_ << "\n";
sb << "tail_update_id\t" << bot_info.tail_update_id_ << "\n";
sb << "pending_update_count\t" << bot_info.pending_update_count_ << "\n";
sb << "webhook_max_connections\t" << bot_info.webhook_max_connections_ << "\n";
auto stats = client_info->stat_.as_vector(now);
for (auto &stat : stats) {
if (stat.key_ == "update_count" || stat.key_ == "request_count") {
sb << stat.key_ << "/sec\t" << stat.value_ << "\n";
}
}
if (sb.is_error()) {
break;
}
}
// ignore sb overflow
promise.set_value(td::BufferSlice(sb.as_cslice()));
}
td::int64 ClientManager::get_tqueue_id(td::int64 user_id, bool is_test_dc) {
return user_id + (static_cast<td::int64>(is_test_dc) << 54);
}
void ClientManager::start_up() {
//NB: the same scheduler as for database in Td
auto current_scheduler_id = td::Scheduler::instance()->sched_id();
auto scheduler_count = td::Scheduler::instance()->sched_count();
auto scheduler_id = td::min(current_scheduler_id + 1, scheduler_count - 1);
// init tqueue
{
auto load_start_time = td::Time::now();
auto tqueue_binlog = td::make_unique<td::TQueueBinlog<td::Binlog>>();
auto binlog = td::make_unique<td::Binlog>();
auto tqueue = td::TQueue::create();
td::vector<td::uint64> failed_to_replay_log_event_ids;
td::int64 loaded_event_count = 0;
binlog
->init(parameters_->working_directory_ + "tqueue.binlog",
[&](const td::BinlogEvent &event) {
if (tqueue_binlog->replay(event, *tqueue).is_error()) {
failed_to_replay_log_event_ids.push_back(event.id_);
} else {
loaded_event_count++;
}
})
.ensure();
tqueue_binlog.reset();
if (!failed_to_replay_log_event_ids.empty()) {
LOG(ERROR) << "Failed to replay " << failed_to_replay_log_event_ids.size() << " TQueue events";
for (auto &log_event_id : failed_to_replay_log_event_ids) {
binlog->erase(log_event_id);
}
}
auto concurrent_binlog = std::make_shared<td::ConcurrentBinlog>(std::move(binlog), scheduler_id);
auto concurrent_tqueue_binlog = td::make_unique<td::TQueueBinlog<td::BinlogInterface>>();
concurrent_tqueue_binlog->set_binlog(std::move(concurrent_binlog));
tqueue->set_callback(std::move(concurrent_tqueue_binlog));
parameters_->shared_data_->tqueue_ = std::move(tqueue);
LOG(WARNING) << "Loaded " << loaded_event_count << " TQueue events in " << (td::Time::now() - load_start_time)
<< " seconds";
}
// init webhook_db
auto concurrent_webhook_db = td::make_unique<td::BinlogKeyValue<td::ConcurrentBinlog>>();
auto status = concurrent_webhook_db->init(parameters_->working_directory_ + "webhooks_db.binlog", td::DbKey::empty(),
scheduler_id);
LOG_IF(FATAL, status.is_error()) << "Can't open webhooks_db.binlog " << status.error();
parameters_->shared_data_->webhook_db_ = std::move(concurrent_webhook_db);
auto &webhook_db = *parameters_->shared_data_->webhook_db_;
for (auto key_value : webhook_db.get_all()) {
if (!token_range_(td::to_integer<td::uint64>(key_value.first))) {
LOG(WARNING) << "DROP WEBHOOK: " << key_value.first << " ---> " << key_value.second;
webhook_db.erase(key_value.first);
continue;
}
auto query = get_webhook_restore_query(key_value.first, key_value.second, parameters_->shared_data_);
send_closure_later(actor_id(this), &ClientManager::send, std::move(query));
}
}
PromisedQueryPtr ClientManager::get_webhook_restore_query(td::Slice token, td::Slice webhook_info,
std::shared_ptr<SharedData> shared_data) {
// create Query with empty promise
td::vector<td::BufferSlice> containers;
auto add_string = [&containers](td::Slice str) {
containers.emplace_back(str);
return containers.back().as_slice();
};
token = add_string(token);
LOG(WARNING) << "WEBHOOK: " << token << " ---> " << webhook_info;
bool is_test_dc = false;
if (td::ends_with(token, ":T")) {
token.remove_suffix(2);
is_test_dc = true;
}
td::ConstParser parser{webhook_info};
td::vector<std::pair<td::MutableSlice, td::MutableSlice>> args;
if (parser.try_skip("cert/")) {
args.emplace_back(add_string("certificate"), add_string("previous"));
}
if (parser.try_skip("#maxc")) {
args.emplace_back(add_string("max_connections"), add_string(parser.read_till('/')));
parser.skip('/');
}
if (parser.try_skip("#ip")) {
args.emplace_back(add_string("ip_address"), add_string(parser.read_till('/')));
parser.skip('/');
}
if (parser.try_skip("#fix_ip")) {
args.emplace_back(add_string("fix_ip_address"), add_string("1"));
parser.skip('/');
}
if (parser.try_skip("#allow")) {
args.emplace_back(add_string("allowed_updates"), add_string(parser.read_till('/')));
parser.skip('/');
}
args.emplace_back(add_string("url"), add_string(parser.read_all()));
const auto method = add_string("setwebhook");
auto query = std::make_unique<Query>(std::move(containers), token, is_test_dc, method, std::move(args),
td::vector<std::pair<td::MutableSlice, td::MutableSlice>>(),
td::vector<td::HttpFile>(), std::move(shared_data), td::IPAddress(), true);
return PromisedQueryPtr(query.release(), PromiseDeleter(td::PromiseActor<td::unique_ptr<Query>>()));
}
void ClientManager::raw_event(const td::Event::Raw &event) {
auto id = get_link_token();
auto *info = clients_.get(id);
CHECK(info != nullptr);
auto &value = active_client_count_[info->tqueue_id_];
if (event.ptr != nullptr) {
value++;
} else {
CHECK(value > 0);
if (--value == 0) {
active_client_count_.erase(info->tqueue_id_);
}
}
}
void ClientManager::hangup_shared() {
auto id = get_link_token();
auto *info = clients_.get(id);
CHECK(info != nullptr);
info->client_.release();
token_to_id_.erase(info->token_);
clients_.erase(id);
if (close_flag_ && clients_.empty()) {
CHECK(active_client_count_.empty());
close_db();
}
}
void ClientManager::close_db() {
LOG(WARNING) << "Closing databases";
td::MultiPromiseActorSafe mpromise("close binlogs");
mpromise.add_promise(td::PromiseCreator::lambda(
[actor_id = actor_id(this)](td::Unit) { send_closure(actor_id, &ClientManager::finish_close); }));
parameters_->shared_data_->tqueue_->close(mpromise.get_promise());
parameters_->shared_data_->webhook_db_->close(mpromise.get_promise());
}
void ClientManager::finish_close() {
LOG(WARNING) << "Stop ClientManager";
auto promises = std::move(close_promises_);
for (auto &promise : promises) {
promise.set_value(td::Unit());
}
stop();
}
} // namespace telegram_bot_api
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