kun yu 77e1ddd81b branch-0.4.0
Former-commit-id: a4df63653202df32d0b983de27f5c969905d17ac
2019-07-30 10:23:34 +08:00

105 lines
3.3 KiB
C++

// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
#pragma once
#include <iosfwd>
#include <memory>
#include <string>
#include <vector>
#include "arrow/filesystem/filesystem.h"
namespace arrow {
namespace fs {
namespace internal {
struct DirInfo {
std::string full_path;
TimePoint mtime;
bool operator==(const DirInfo& other) const {
return mtime == other.mtime && full_path == other.full_path;
}
friend ARROW_EXPORT std::ostream& operator<<(std::ostream&, const DirInfo&);
};
struct FileInfo {
std::string full_path;
TimePoint mtime;
std::string data;
bool operator==(const FileInfo& other) const {
return mtime == other.mtime && full_path == other.full_path && data == other.data;
}
friend ARROW_EXPORT std::ostream& operator<<(std::ostream&, const FileInfo&);
};
/// A mock FileSystem implementation that holds its contents in memory.
///
/// Useful for validating the FileSystem API, writing conformance suite,
/// and bootstrapping FileSystem-based APIs.
class ARROW_EXPORT MockFileSystem : public FileSystem {
public:
explicit MockFileSystem(TimePoint current_time);
~MockFileSystem() override;
// XXX It's not very practical to have to explicitly declare inheritance
// of default overrides.
using FileSystem::GetTargetStats;
Status GetTargetStats(const std::string& path, FileStats* out) override;
Status GetTargetStats(const Selector& select, std::vector<FileStats>* out) override;
Status CreateDir(const std::string& path, bool recursive = true) override;
Status DeleteDir(const std::string& path) override;
Status DeleteFile(const std::string& path) override;
Status Move(const std::string& src, const std::string& dest) override;
Status CopyFile(const std::string& src, const std::string& dest) override;
Status OpenInputStream(const std::string& path,
std::shared_ptr<io::InputStream>* out) override;
Status OpenInputFile(const std::string& path,
std::shared_ptr<io::RandomAccessFile>* out) override;
Status OpenOutputStream(const std::string& path,
std::shared_ptr<io::OutputStream>* out) override;
Status OpenAppendStream(const std::string& path,
std::shared_ptr<io::OutputStream>* out) override;
// Contents-dumping helpers to ease testing.
// Output is lexicographically-ordered by full path.
std::vector<DirInfo> AllDirs();
std::vector<FileInfo> AllFiles();
class Impl;
protected:
std::unique_ptr<Impl> impl_;
};
} // namespace internal
} // namespace fs
} // namespace arrow