91 lines
2.3 KiB
C++
91 lines
2.3 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2020
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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/telegram/net/NetQuery.h"
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#include "td/actor/actor.h"
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#include "td/utils/common.h"
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#include "td/utils/Random.h"
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#include <limits>
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#include <unordered_map>
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namespace td {
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class SequenceDispatcher : public NetQueryCallback {
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public:
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class Parent : public Actor {
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public:
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virtual void ready_to_close() = 0;
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virtual void on_result() = 0;
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};
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SequenceDispatcher() = default;
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explicit SequenceDispatcher(ActorShared<Parent> parent) : parent_(std::move(parent)) {
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}
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void send_with_callback(NetQueryPtr query, ActorShared<NetQueryCallback> callback);
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void on_result(NetQueryPtr query) override;
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void close_silent();
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private:
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enum class State : int32 { Start, Wait, Finish, Dummy };
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struct Data {
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State state_;
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NetQueryRef net_query_ref_;
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NetQueryPtr query_;
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ActorShared<NetQueryCallback> callback_;
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uint64 generation_;
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double total_timeout_;
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double last_timeout_;
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};
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ActorShared<Parent> parent_;
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size_t id_offset_ = 1;
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std::vector<Data> data_;
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size_t finish_i_ = 0; // skip state_ == State::Finish
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size_t next_i_ = 0;
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size_t last_sent_i_ = std::numeric_limits<size_t>::max();
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uint64 generation_ = 1;
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uint32 session_rand_ = Random::secure_int32();
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static constexpr int32 MAX_SIMULTANEOUS_WAIT = 10;
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uint32 wait_cnt_ = 0;
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void check_timeout(Data &data);
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void try_resend_query(Data &data, NetQueryPtr query);
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Data &data_from_token();
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void on_resend_ok(NetQueryPtr query);
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void on_resend_error();
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void do_resend(Data &data);
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void do_finish(Data &data);
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void loop() override;
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void try_shrink();
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void timeout_expired() override;
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void hangup() override;
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void tear_down() override;
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};
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class MultiSequenceDispatcher : public SequenceDispatcher::Parent {
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public:
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void send_with_callback(NetQueryPtr query, ActorShared<NetQueryCallback> callback, uint64 sequence_id);
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private:
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struct Data {
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int32 cnt_;
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ActorOwn<SequenceDispatcher> dispatcher_;
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};
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std::unordered_map<uint64, Data> dispatchers_;
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void on_result() override;
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void ready_to_close() override;
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};
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} // namespace td
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