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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2022
//
// 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/FileStatsWorker.h"
#include "td/telegram/DialogId.h"
#include "td/telegram/files/FileData.h"
#include "td/telegram/files/FileDb.h"
#include "td/telegram/files/FileLoaderUtils.h"
#include "td/telegram/files/FileLocation.h"
#include "td/telegram/files/FileType.h"
#include "td/telegram/Global.h"
#include "td/telegram/logevent/LogEvent.h"
#include "td/telegram/TdDb.h"
#include "td/telegram/TdParameters.h"
#include "td/db/SqliteKeyValue.h"
#include "td/utils/format.h"
#include "td/utils/HashTableUtils.h"
#include "td/utils/logging.h"
#include "td/utils/misc.h"
#include "td/utils/PathView.h"
#include "td/utils/port/path.h"
#include "td/utils/port/Stat.h"
#include "td/utils/Slice.h"
#include "td/utils/SliceBuilder.h"
#include "td/utils/Time.h"
#include "td/utils/tl_parsers.h"
#include <unordered_map>
#include <unordered_set>
namespace td {
namespace {
// Performance ideas:
// - use slice instead of string
// - use arena memory allocator
// - store FileType or dir, no both
// - store dir relative to G()->files_dir()
struct DbFileInfo {
FileType file_type;
string path;
DialogId owner_dialog_id;
int64 size;
};
template <class CallbackT>
void scan_db(CancellationToken &token, CallbackT &&callback) {
G()->td_db()->get_file_db_shared()->pmc().get_by_range("file0", "file:", [&](Slice key, Slice value) {
if (token) {
return false;
}
// skip reference to other data
if (value.substr(0, 2) == "@@") {
return true;
}
log_event::WithVersion<TlParser> parser(value);
FileData data;
data.parse(parser, false);
if (parser.get_status().is_error()) {
LOG(ERROR) << "Invalid FileData in the database " << tag("value", format::escaped(value));
return true;
}
DbFileInfo info;
if (data.local_.type() == LocalFileLocation::Type::Full) {
info.file_type = data.local_.full().file_type_;
info.path = data.local_.full().path_;
} else if (data.local_.type() == LocalFileLocation::Type::Partial) {
info.file_type = data.local_.partial().file_type_;
info.path = data.local_.partial().path_;
} else {
return true;
}
PathView path_view(info.path);
if (path_view.is_relative()) {
info.path = PSTRING() << get_files_base_dir(info.file_type) << info.path;
}
// LOG(INFO) << "Found file in the database: " << data << " " << info.path;
info.owner_dialog_id = data.owner_dialog_id_;
info.size = data.size_;
if (info.size == 0 && data.local_.type() == LocalFileLocation::Type::Full) {
LOG(ERROR) << "Unknown size in the database";
return true;
}
callback(info);
return true;
});
}
struct FsFileInfo {
FileType file_type;
string path;
int64 size;
uint64 atime_nsec;
uint64 mtime_nsec;
};
template <class CallbackT>
void scan_fs(CancellationToken &token, CallbackT &&callback) {
std::unordered_set<string, Hash<string>> scanned_file_dirs;
auto scan_dir = [&](FileType file_type, const string &file_dir) {
LOG(INFO) << "Trying to scan directory " << file_dir;
if (!scanned_file_dirs.insert(file_dir).second) {
return;
}
walk_path(file_dir, [&](CSlice path, WalkPath::Type type) {
if (token) {
return WalkPath::Action::Abort;
}
if (type != WalkPath::Type::NotDir) {
return WalkPath::Action::Continue;
}
auto r_stat = stat(path);
if (r_stat.is_error()) {
LOG(WARNING) << "Stat in files gc failed: " << r_stat.error();
return WalkPath::Action::Continue;
}
auto stat = r_stat.move_as_ok();
if (stat.size_ == 0 && ends_with(path, "/.nomedia")) {
// skip .nomedia file
return WalkPath::Action::Continue;
}
FsFileInfo info;
info.path = path.str();
info.size = stat.real_size_;
info.file_type = file_type;
info.atime_nsec = stat.atime_nsec_;
info.mtime_nsec = stat.mtime_nsec_;
callback(info);
return WalkPath::Action::Continue;
}).ignore();
};
for (int32 i = 0; i < MAX_FILE_TYPE; i++) {
auto file_type = static_cast<FileType>(i);
scan_dir(get_main_file_type(file_type), get_files_dir(file_type));
}
scan_dir(get_main_file_type(FileType::Temp), get_files_temp_dir(FileType::SecureDecrypted));
scan_dir(get_main_file_type(FileType::Temp), get_files_temp_dir(FileType::Video));
}
} // namespace
void FileStatsWorker::get_stats(bool need_all_files, bool split_by_owner_dialog_id, Promise<FileStats> promise) {
if (!G()->parameters().use_chat_info_db) {
split_by_owner_dialog_id = false;
}
if (!split_by_owner_dialog_id) {
FileStats file_stats(need_all_files, false);
auto start = Time::now();
scan_fs(token_, [&](FsFileInfo &fs_info) {
FullFileInfo info;
info.file_type = fs_info.file_type;
info.path = std::move(fs_info.path);
info.size = fs_info.size;
info.atime_nsec = fs_info.atime_nsec;
info.mtime_nsec = fs_info.mtime_nsec;
file_stats.add(std::move(info));
});
auto passed = Time::now() - start;
LOG_IF(INFO, passed > 0.5) << "Get file stats took: " << format::as_time(passed);
if (token_) {
return promise.set_error(Global::request_aborted_error());
}
promise.set_value(std::move(file_stats));
} else {
auto start = Time::now();
std::vector<FullFileInfo> full_infos;
scan_fs(token_, [&](FsFileInfo &fs_info) {
FullFileInfo info;
info.file_type = fs_info.file_type;
info.path = std::move(fs_info.path);
info.size = fs_info.size;
info.atime_nsec = fs_info.atime_nsec;
info.mtime_nsec = fs_info.mtime_nsec;
// LOG(INFO) << "Found file of size " << info.size << " at " << info.path;
full_infos.push_back(std::move(info));
});
if (token_) {
return promise.set_error(Global::request_aborted_error());
}
std::unordered_map<int64, size_t, Hash<int64>> hash_to_pos;
size_t pos = 0;
for (auto &full_info : full_infos) {
hash_to_pos[Hash<string>()(full_info.path)] = pos;
pos++;
if (token_) {
return promise.set_error(Global::request_aborted_error());
}
}
scan_db(token_, [&](DbFileInfo &db_info) {
auto it = hash_to_pos.find(Hash<string>()(db_info.path));
if (it == hash_to_pos.end()) {
return;
}
// LOG(INFO) << "Match! " << db_info.path << " from " << db_info.owner_dialog_id;
full_infos[it->second].owner_dialog_id = db_info.owner_dialog_id;
});
if (token_) {
return promise.set_error(Global::request_aborted_error());
}
FileStats file_stats(need_all_files, split_by_owner_dialog_id);
for (auto &full_info : full_infos) {
file_stats.add(std::move(full_info));
if (token_) {
return promise.set_error(Global::request_aborted_error());
}
}
auto passed = Time::now() - start;
LOG_IF(INFO, passed > 0.5) << "Get file stats took: " << format::as_time(passed);
promise.set_value(std::move(file_stats));
}
}
} // namespace td
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