tdlight-telegram-bot-api/telegram-bot-api/WebhookActor.h
2021-09-29 20:34:21 +03:00

230 lines
6.5 KiB
C++

//
// 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 "telegram-bot-api/Query.h"
#include "td/db/TQueue.h"
#include "td/net/HttpOutboundConnection.h"
#include "td/net/HttpQuery.h"
#include "td/net/SslStream.h"
#include "td/actor/actor.h"
#include "td/actor/PromiseFuture.h"
#include "td/utils/BufferedFd.h"
#include "td/utils/common.h"
#include "td/utils/Container.h"
#include "td/utils/FloodControlFast.h"
#include "td/utils/HttpUrl.h"
#include "td/utils/JsonBuilder.h"
#include "td/utils/List.h"
#include "td/utils/port/IPAddress.h"
#include "td/utils/port/SocketFd.h"
#include "td/utils/Slice.h"
#include "td/utils/Status.h"
#include "td/utils/VectorQueue.h"
#include <atomic>
#include <functional>
#include <memory>
#include <set>
#include <tuple>
#include <unordered_map>
namespace telegram_bot_api {
struct ClientParameters;
class WebhookActor : public td::HttpOutboundConnection::Callback {
public:
class Callback : public td::Actor {
public:
virtual void webhook_verified(td::string cached_ip) = 0;
virtual void webhook_success() = 0;
virtual void webhook_error(td::Status status) = 0;
virtual void webhook_closed(td::Status status) = 0;
virtual void send(PromisedQueryPtr query) = 0;
};
WebhookActor(td::ActorShared<Callback> callback, td::int64 tqueue_id, td::HttpUrl url, td::string cert_path,
td::int32 max_connections, bool from_db_flag, td::string cached_ip_address, bool fix_ip_address,
std::shared_ptr<const ClientParameters> parameters);
void update();
void close();
static td::int64 get_total_connections_count() {
return total_connections_count_;
}
private:
static constexpr std::size_t MIN_PENDING_UPDATES_WARNING = 50;
static constexpr int IP_ADDRESS_CACHE_TIME = 30 * 60; // 30 minutes
static constexpr int WEBHOOK_MAX_RESEND_TIMEOUT = 60;
static constexpr int WEBHOOK_DROP_TIMEOUT = 60 * 60 * 23;
static std::atomic<td::uint64> total_connections_count_;
td::ActorShared<Callback> callback_;
td::int64 tqueue_id_;
bool tqueue_empty_ = false;
std::size_t last_pending_update_count_ = MIN_PENDING_UPDATES_WARNING;
td::HttpUrl url_;
td::string cert_path_;
std::shared_ptr<const ClientParameters> parameters_;
double last_error_time_ = 0;
td::string last_error_message_ = "<none>";
bool fix_ip_address_ = false;
bool stop_flag_ = false;
bool was_checked_ = false;
bool from_db_flag_ = false;
class Update {
public:
td::TQueue::EventId id_;
td::string json_;
td::int32 expires_at_ = 0;
double last_send_time_ = 0;
double wakeup_at_ = 0;
int delay_ = 0;
int fail_count_ = 0;
td::int64 queue_id_ = 0;
};
struct QueueUpdates {
td::VectorQueue<td::TQueue::EventId> event_ids;
};
struct Queue {
Queue() = default;
Queue(double wakeup_at, td::int64 id)
: wakeup_at(wakeup_at), integer_wakeup_at(static_cast<td::int64>(wakeup_at * 1e9)), id(id) {
}
double wakeup_at{0};
td::int64 integer_wakeup_at{0};
td::int64 id{0};
bool operator<(const Queue &other) const {
return std::tie(integer_wakeup_at, id) < std::tie(other.integer_wakeup_at, other.id);
}
};
td::TQueue::EventId tqueue_offset_;
std::size_t max_loaded_updates_ = 0;
struct EventIdHash {
std::size_t operator()(td::TQueue::EventId event_id) const {
return std::hash<td::int32>()(event_id.value());
}
};
std::unordered_map<td::TQueue::EventId, Update, EventIdHash> update_map_;
std::unordered_map<td::int64, QueueUpdates> queue_updates_;
std::set<Queue> queues_;
td::int64 unique_queue_id_ = static_cast<td::int64>(1) << 60;
double first_error_410_time_ = 0;
td::IPAddress ip_address_;
td::int32 ip_generation_ = 0;
double next_ip_address_resolve_time_ = 0;
td::FutureActor<td::IPAddress> future_ip_address_;
class Connection : public td::ListNode {
public:
Connection() = default;
Connection(const Connection &) = delete;
Connection &operator=(const Connection &) = delete;
Connection(Connection &&) = default;
Connection &operator=(Connection &&) = default;
~Connection() = default;
td::ActorOwn<td::HttpOutboundConnection> actor_id_;
td::uint64 id_ = 0;
td::TQueue::EventId event_id_;
td::int32 ip_generation_ = -1;
static Connection *from_list_node(ListNode *node) {
return static_cast<Connection *>(node);
}
ListNode *to_list_node() {
return this;
}
};
td::Container<td::ActorOwn<>> pending_sockets_;
td::vector<td::BufferedFd<td::SocketFd>> ready_sockets_;
td::int32 max_connections_ = 0;
td::Container<Connection> connections_;
td::ListNode ready_connections_;
td::FloodControlFast active_new_connection_flood_;
td::FloodControlFast pending_new_connection_flood_;
double last_success_time_ = 0;
double wakeup_at_ = 0;
bool last_update_was_successful_ = true;
void relax_wakeup_at(double wakeup_at, const char *source);
void resolve_ip_address();
td::Result<td::SslStream> create_ssl_stream();
td::Status create_connection() TD_WARN_UNUSED_RESULT;
td::Status create_connection(td::BufferedFd<td::SocketFd> fd) TD_WARN_UNUSED_RESULT;
void on_socket_ready_async(td::Result<td::BufferedFd<td::SocketFd>> r_fd, td::int64 id);
void create_new_connections();
void drop_event(td::TQueue::EventId event_id);
void load_updates();
void on_update_ok(td::TQueue::EventId event_id);
void on_update_error(td::TQueue::EventId event_id, td::Slice error, int retry_after);
td::Status send_update() TD_WARN_UNUSED_RESULT;
void send_updates();
void loop() override;
void handle(td::unique_ptr<td::HttpQuery> response) override;
void hangup_shared() override;
void hangup() override;
void tear_down() override;
void start_up() override;
bool check_ip_address(const td::IPAddress &addr) const;
void on_error(td::Status status);
void on_connection_error(td::Status error) override;
void on_webhook_error(td::Slice error);
void on_webhook_verified();
};
class JsonUpdate : public td::Jsonable {
public:
JsonUpdate(td::int32 id, td::Slice update) : id_(id), update_(update) {
}
void store(td::JsonValueScope *scope) const {
auto object = scope->enter_object();
object("update_id", id_);
object << td::JsonRaw(",\n");
CHECK(!update_.empty());
object << td::JsonRaw(update_);
}
private:
td::int32 id_;
td::Slice update_;
};
} // namespace telegram_bot_api