130 lines
4.5 KiB
C++
130 lines
4.5 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2024
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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/files/FileDownloader.h"
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#include "td/telegram/files/FileEncryptionKey.h"
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#include "td/telegram/files/FileFromBytes.h"
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#include "td/telegram/files/FileLocation.h"
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#include "td/telegram/files/FileType.h"
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#include "td/telegram/files/ResourceManager.h"
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#include "td/telegram/net/DcId.h"
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#include "td/actor/actor.h"
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#include "td/utils/buffer.h"
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#include "td/utils/common.h"
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#include "td/utils/Container.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 FileDownloadManager final : public Actor {
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public:
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using QueryId = uint64;
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class Callback {
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public:
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virtual ~Callback();
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virtual void on_start_download(QueryId query_id) = 0;
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virtual void on_partial_download(QueryId query_id, PartialLocalFileLocation partial_local, int64 ready_size,
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int64 size) = 0;
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virtual void on_download_ok(QueryId query_id, FullLocalFileLocation local, int64 size, bool is_new) = 0;
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virtual void on_error(QueryId query_id, Status status) = 0;
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};
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explicit FileDownloadManager(unique_ptr<Callback> callback, ActorShared<> parent);
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void download(QueryId query_id, const FullRemoteFileLocation &remote_location, const LocalFileLocation &local,
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int64 size, string name, const FileEncryptionKey &encryption_key, bool need_search_file, int64 offset,
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int64 limit, int8 priority);
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void update_priority(QueryId query_id, int8 priority);
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void from_bytes(QueryId query_id, FileType type, BufferSlice bytes, string name);
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void cancel(QueryId query_id);
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void update_downloaded_part(QueryId query_id, int64 offset, int64 limit);
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private:
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struct Node {
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QueryId query_id_;
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ActorOwn<FileDownloader> downloader_;
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ActorOwn<FileFromBytes> from_bytes_;
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};
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using NodeId = uint64;
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std::map<DcId, ActorOwn<ResourceManager>> download_resource_manager_map_;
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std::map<DcId, ActorOwn<ResourceManager>> download_small_resource_manager_map_;
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Container<Node> nodes_container_;
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unique_ptr<Callback> callback_;
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ActorShared<> parent_;
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std::map<QueryId, NodeId> query_id_to_node_id_;
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int64 max_download_resource_limit_ = 1 << 21;
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bool stop_flag_ = false;
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void start_up() final;
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void hangup() final;
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void hangup_shared() final;
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void close_node(NodeId node_id);
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void try_stop();
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ActorOwn<ResourceManager> &get_download_resource_manager(bool is_small, DcId dc_id);
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void on_start_download();
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void on_partial_download(PartialLocalFileLocation partial_local, int64 ready_size, int64 size);
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void on_ok_download(FullLocalFileLocation local, int64 size, bool is_new);
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void on_error(Status status);
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void on_error_impl(NodeId node_id, Status status);
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class FileDownloaderCallback final : public FileDownloader::Callback {
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public:
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explicit FileDownloaderCallback(ActorShared<FileDownloadManager> actor_id) : actor_id_(std::move(actor_id)) {
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}
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private:
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ActorShared<FileDownloadManager> actor_id_;
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void on_start_download() final {
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send_closure(actor_id_, &FileDownloadManager::on_start_download);
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}
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void on_partial_download(PartialLocalFileLocation partial_local, int64 ready_size, int64 size) final {
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send_closure(actor_id_, &FileDownloadManager::on_partial_download, std::move(partial_local), ready_size, size);
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}
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void on_ok(FullLocalFileLocation full_local, int64 size, bool is_new) final {
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send_closure(std::move(actor_id_), &FileDownloadManager::on_ok_download, std::move(full_local), size, is_new);
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}
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void on_error(Status status) final {
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send_closure(std::move(actor_id_), &FileDownloadManager::on_error, std::move(status));
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}
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};
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class FileFromBytesCallback final : public FileFromBytes::Callback {
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public:
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explicit FileFromBytesCallback(ActorShared<FileDownloadManager> actor_id) : actor_id_(std::move(actor_id)) {
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}
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private:
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ActorShared<FileDownloadManager> actor_id_;
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void on_ok(const FullLocalFileLocation &full_local, int64 size) final {
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send_closure(std::move(actor_id_), &FileDownloadManager::on_ok_download, full_local, size, true);
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}
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void on_error(Status status) final {
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send_closure(std::move(actor_id_), &FileDownloadManager::on_error, std::move(status));
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}
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};
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};
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} // namespace td
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