64b1a2caf9
tmpdir is a helper class representing a temporary directory. Unfortunately, it suffers for some problems such as lack of proper encapsulation and weak typing. This has caused bugs in the past when the user code accidentally modified the member variable with the path to the directory. This patch modernises tmpdir and updates its users. The path is stored in a std::filesystem::path and available read-only to the class users. mkdtemp and boost are replaced by standard solution. The users are update to use path more (when it didn't involve too many changes to their code) and stop using lw_shared_ptr to store the tmpdir when it wasn't necessary. tmpdir intentionally doesn't provide any helpers for getting the path as a string in order to discourage weak types. Message-Id: <20190207145727.491-1-pdziepak@scylladb.com>
63 lines
1.8 KiB
C++
63 lines
1.8 KiB
C++
/*
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* Copyright (C) 2015 ScyllaDB
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*/
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/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <fmt/format.h>
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#include <seastar/util/std-compat.hh>
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#include "utils/UUID.hh"
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// Creates a new empty directory with arbitrary name, which will be removed
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// automatically when tmpdir object goes out of scope.
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class tmpdir {
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seastar::compat::filesystem::path _path;
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private:
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void remove() {
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if (!_path.empty()) {
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seastar::compat::filesystem::remove_all(_path);
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}
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}
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public:
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tmpdir()
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: _path(seastar::compat::filesystem::temp_directory_path() /
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fmt::format(FMT_STRING("scylla-{}"), utils::make_random_uuid())) {
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seastar::compat::filesystem::create_directories(_path);
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}
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tmpdir(tmpdir&& other) noexcept : _path(std::exchange(other._path, {})) { }
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tmpdir(const tmpdir&) = delete;
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void operator=(tmpdir&& other) noexcept {
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remove();
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_path = std::exchange(other._path, {});
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}
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void operator=(const tmpdir&) = delete;
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~tmpdir() {
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remove();
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}
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const seastar::compat::filesystem::path& path() const noexcept { return _path; }
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};
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