72 lines
2.2 KiB
C++
72 lines
2.2 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/actor/actor.h"
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#include "td/actor/PromiseFuture.h"
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#include "td/telegram/files/FileLocation.h"
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#include "td/utils/Status.h"
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#include <map>
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namespace td {
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class FileGenerateActor;
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class FileGenerateCallback {
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public:
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FileGenerateCallback() = default;
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FileGenerateCallback(const FileGenerateCallback &) = delete;
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FileGenerateCallback &operator=(const FileGenerateCallback &) = delete;
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virtual ~FileGenerateCallback() = default;
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virtual void on_partial_generate(const PartialLocalFileLocation &partial_local, int32 expected_size) = 0;
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virtual void on_ok(const FullLocalFileLocation &local) = 0;
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virtual void on_error(Status error) = 0;
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};
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class FileGenerateManager : public Actor {
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public:
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explicit FileGenerateManager(ActorShared<> parent) : parent_(std::move(parent)) {
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}
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void generate_file(uint64 query_id, FullGenerateFileLocation generate_location,
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const LocalFileLocation &local_location, string name, unique_ptr<FileGenerateCallback> callback);
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void cancel(uint64 query_id);
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// external updates about file generation state
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void external_file_generate_write_part(uint64 query_id, int32 offset, string data, Promise<> promise);
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void external_file_generate_progress(uint64 query_id, int32 expected_size, int32 local_prefix_size,
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Promise<> promise);
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void external_file_generate_finish(uint64 query_id, Status status, Promise<> promise);
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private:
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struct Query {
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Query() = default;
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Query(const Query &other) = delete;
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Query &operator=(const Query &other) = delete;
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Query(Query &&other);
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Query &operator=(Query &&other);
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~Query();
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ActorOwn<FileGenerateActor> worker_;
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};
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ActorShared<> parent_;
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std::map<uint64, Query> query_id_to_query_;
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bool close_flag_ = false;
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void hangup() override;
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void hangup_shared() override;
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void loop() override;
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void do_cancel(uint64 query_id);
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};
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} // namespace td
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