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tdlib-fork/td/telegram/files/FileGenerateManager.cpp
levlam 1dffa9608d Make FileLocation.type_ private.
GitOrigin-RevId: 14841a320804eacbeef501df79c94b3bff2f4d0c
2018-01-20 17:57:52 +03:00

286 lines
10 KiB
C++

//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
//
// 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 "td/telegram/files/FileGenerateManager.h"
#include "td/telegram/td_api.h"
#include "td/telegram/files/FileId.h"
#include "td/telegram/files/FileLoaderUtils.h"
#include "td/telegram/files/FileManager.h"
#include "td/telegram/Global.h"
#include "td/telegram/Td.h"
#include "td/utils/common.h"
#include "td/utils/logging.h"
#include "td/utils/misc.h"
#include "td/utils/port/path.h"
#include "td/utils/Slice.h"
#include <utility>
namespace td {
class FileGenerateActor : public Actor {
public:
FileGenerateActor() = default;
FileGenerateActor(const FileGenerateActor &) = delete;
FileGenerateActor &operator=(const FileGenerateActor &) = delete;
FileGenerateActor(FileGenerateActor &&) = delete;
FileGenerateActor &operator=(FileGenerateActor &&) = delete;
~FileGenerateActor() override = default;
virtual void file_generate_progress(int32 expected_size, int32 local_prefix_size, Promise<> promise) = 0;
virtual void file_generate_finish(Status status, Promise<> promise) = 0;
};
class FileDownloadGenerateActor : public FileGenerateActor {
public:
FileDownloadGenerateActor(FileType file_type, FileId file_id, std::unique_ptr<FileGenerateCallback> callback,
ActorShared<> parent)
: file_type_(file_type), file_id_(file_id), callback_(std::move(callback)), parent_(std::move(parent)) {
}
void file_generate_progress(int32 expected_size, int32 local_prefix_size, Promise<> promise) override {
UNREACHABLE();
}
void file_generate_finish(Status status, Promise<> promise) override {
UNREACHABLE();
}
private:
FileType file_type_;
FileId file_id_;
std::unique_ptr<FileGenerateCallback> callback_;
ActorShared<> parent_;
void start_up() override {
LOG(INFO) << "DOWNLOAD " << file_id_;
class Callback : public FileManager::DownloadCallback {
public:
explicit Callback(ActorId<FileDownloadGenerateActor> parent) : parent_(std::move(parent)) {
}
// TODO: upload during download
void on_download_ok(FileId file_id) override {
send_closure(parent_, &FileDownloadGenerateActor::on_download_ok);
}
void on_download_error(FileId file_id, Status error) override {
send_closure(parent_, &FileDownloadGenerateActor::on_download_error, std::move(error));
}
private:
ActorId<FileDownloadGenerateActor> parent_;
};
send_closure(G()->file_manager(), &FileManager::download, file_id_, std::make_unique<Callback>(actor_id(this)), 1);
}
void hangup() override {
send_closure(G()->file_manager(), &FileManager::download, file_id_, nullptr, 0);
stop();
}
void on_download_ok() {
send_lambda(G()->file_manager(), [file_type = file_type_, file_id = file_id_, callback = std::move(callback_)] {
auto file_view = G()->td().get_actor_unsafe()->file_manager_->get_file_view(file_id);
if (file_view.has_local_location()) {
auto location = file_view.local_location();
location.file_type_ = file_type;
callback->on_ok(location);
} else {
LOG(ERROR) << "Expected to have local location";
callback->on_error(Status::Error("Unknown"));
}
});
stop();
}
void on_download_error(Status error) {
callback_->on_error(std::move(error));
stop();
}
};
class FileExternalGenerateActor : public FileGenerateActor {
public:
FileExternalGenerateActor(uint64 query_id, const FullGenerateFileLocation &generate_location,
const LocalFileLocation &local_location, string name,
std::unique_ptr<FileGenerateCallback> callback, ActorShared<> parent)
: query_id_(query_id)
, generate_location_(generate_location)
, local_(local_location)
, name_(std::move(name))
, callback_(std::move(callback))
, parent_(std::move(parent)) {
}
void file_generate_progress(int32 expected_size, int32 local_prefix_size, Promise<> promise) override {
check_status(do_file_generate_progress(expected_size, local_prefix_size), std::move(promise));
}
void file_generate_finish(Status status, Promise<> promise) override {
check_status(do_file_generate_finish(std::move(status)), std::move(promise));
}
private:
uint64 query_id_;
FullGenerateFileLocation generate_location_;
LocalFileLocation local_;
string name_;
string path_;
std::unique_ptr<FileGenerateCallback> callback_;
ActorShared<> parent_;
void start_up() override {
if (local_.type() == LocalFileLocation::Type::Full) {
callback_->on_ok(local_.full());
callback_.reset();
return stop();
}
if (local_.type() == LocalFileLocation::Type::Partial) {
const auto &partial = local_.partial();
path_ = partial.path_;
LOG(INFO) << "Unlink partially generated file at " << path_;
unlink(path_).ignore();
} else {
auto r_file_path = open_temp_file(generate_location_.file_type_);
if (r_file_path.is_error()) {
return check_status(r_file_path.move_as_error());
}
auto file_path = r_file_path.move_as_ok();
file_path.first.close();
path_ = file_path.second;
}
send_closure(
G()->td(), &Td::send_update,
make_tl_object<td_api::updateFileGenerationStart>(
static_cast<int64>(query_id_), generate_location_.original_path_, path_, generate_location_.conversion_));
}
void hangup() override {
check_status(Status::Error(1, "Cancelled"));
}
Status do_file_generate_progress(int32 expected_size, int32 local_prefix_size) {
if (local_prefix_size < 0) {
return Status::Error(1, "Invalid local prefix size");
}
callback_->on_partial_generate(
PartialLocalFileLocation{generate_location_.file_type_, path_, 1, local_prefix_size, ""}, expected_size);
return Status::OK();
}
Status do_file_generate_finish(Status status) {
TRY_STATUS(std::move(status));
auto dir = get_files_dir(generate_location_.file_type_);
TRY_RESULT(perm_path, create_from_temp(path_, dir, name_));
callback_->on_ok(FullLocalFileLocation(generate_location_.file_type_, std::move(perm_path), 0));
callback_.reset();
stop();
return Status::OK();
}
void check_status(Status status, Promise<> promise = Promise<>()) {
if (promise) {
if (status.is_ok() || status.code() == 1) {
promise.set_value(Unit());
} else {
promise.set_error(Status::Error(400, status.message()));
}
}
if (status.is_error()) {
LOG(INFO) << "Unlink partially generated file at " << path_ << " because of " << status;
unlink(path_).ignore();
callback_->on_error(std::move(status));
callback_.reset();
stop();
}
}
void tear_down() override {
send_closure(G()->td(), &Td::send_update,
make_tl_object<td_api::updateFileGenerationStop>(static_cast<int64>(query_id_)));
}
};
FileGenerateManager::Query::~Query() = default;
FileGenerateManager::Query::Query(Query &&other) = default;
FileGenerateManager::Query &FileGenerateManager::Query::operator=(Query &&other) = default;
void FileGenerateManager::generate_file(uint64 query_id, const FullGenerateFileLocation &generate_location,
const LocalFileLocation &local_location, string name,
std::unique_ptr<FileGenerateCallback> callback) {
CHECK(query_id != 0);
auto it_flag = query_id_to_query_.insert(std::make_pair(query_id, Query{}));
CHECK(it_flag.second) << "Query id must be unique";
auto parent = actor_shared(this, query_id);
Slice file_id_query = "#file_id#";
Slice conversion = generate_location.conversion_;
auto &query = it_flag.first->second;
if (conversion.copy().truncate(file_id_query.size()) == file_id_query) {
auto file_id = FileId(to_integer<int32>(conversion.substr(file_id_query.size())));
query.worker_ = create_actor<FileDownloadGenerateActor>("FileDownloadGenerateActor", generate_location.file_type_,
file_id, std::move(callback), std::move(parent));
} else {
query.worker_ = create_actor<FileExternalGenerateActor>("FileExternalGenerationActor", query_id, generate_location,
local_location, std::move(name), std::move(callback),
std::move(parent));
}
}
void FileGenerateManager::cancel(uint64 query_id) {
auto it = query_id_to_query_.find(query_id);
if (it == query_id_to_query_.end()) {
return;
}
it->second.worker_.reset();
}
void FileGenerateManager::external_file_generate_progress(uint64 query_id, int32 expected_size, int32 local_prefix_size,
Promise<> promise) {
auto it = query_id_to_query_.find(query_id);
if (it == query_id_to_query_.end()) {
return promise.set_error(Status::Error(400, "Unknown generation_id"));
}
send_closure(it->second.worker_, &FileGenerateActor::file_generate_progress, expected_size, local_prefix_size,
std::move(promise));
}
void FileGenerateManager::external_file_generate_finish(uint64 query_id, Status status, Promise<> promise) {
auto it = query_id_to_query_.find(query_id);
if (it == query_id_to_query_.end()) {
return promise.set_error(Status::Error(400, "Unknown generation_id"));
}
send_closure(it->second.worker_, &FileGenerateActor::file_generate_finish, std::move(status), std::move(promise));
}
void FileGenerateManager::do_cancel(uint64 query_id) {
query_id_to_query_.erase(query_id);
}
void FileGenerateManager::hangup_shared() {
do_cancel(get_link_token());
loop();
}
void FileGenerateManager::hangup() {
close_flag_ = true;
for (auto &it : query_id_to_query_) {
it.second.worker_.reset();
}
loop();
}
void FileGenerateManager::loop() {
if (close_flag_ && query_id_to_query_.empty()) {
stop();
}
}
} // namespace td