mirror of https://github.com/facebook/rocksdb.git
144 lines
6.6 KiB
C++
144 lines
6.6 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
|
|
// This source code is licensed under both the GPLv2 (found in the
|
|
// COPYING file in the root directory) and Apache 2.0 License
|
|
// (found in the LICENSE.Apache file in the root directory).
|
|
//
|
|
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file. See the AUTHORS file for names of contributors.
|
|
#pragma once
|
|
|
|
#include <atomic>
|
|
#include <map>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include "env/composite_env_wrapper.h"
|
|
#include "port/port.h"
|
|
#include "rocksdb/env.h"
|
|
#include "rocksdb/status.h"
|
|
#include "rocksdb/system_clock.h"
|
|
|
|
namespace ROCKSDB_NAMESPACE {
|
|
class MemFile;
|
|
class MockFileSystem : public FileSystem {
|
|
public:
|
|
explicit MockFileSystem(const std::shared_ptr<SystemClock>& clock,
|
|
bool supports_direct_io = true);
|
|
~MockFileSystem() override;
|
|
|
|
static const char* kClassName() { return "MemoryFileSystem"; }
|
|
const char* Name() const override { return kClassName(); }
|
|
IOStatus NewSequentialFile(const std::string& f, const FileOptions& file_opts,
|
|
std::unique_ptr<FSSequentialFile>* r,
|
|
IODebugContext* dbg) override;
|
|
IOStatus NewRandomAccessFile(const std::string& f,
|
|
const FileOptions& file_opts,
|
|
std::unique_ptr<FSRandomAccessFile>* r,
|
|
IODebugContext* dbg) override;
|
|
|
|
IOStatus NewRandomRWFile(const std::string& fname,
|
|
const FileOptions& file_opts,
|
|
std::unique_ptr<FSRandomRWFile>* result,
|
|
IODebugContext* dbg) override;
|
|
IOStatus ReuseWritableFile(const std::string& fname,
|
|
const std::string& old_fname,
|
|
const FileOptions& file_opts,
|
|
std::unique_ptr<FSWritableFile>* result,
|
|
IODebugContext* dbg) override;
|
|
IOStatus NewWritableFile(const std::string& fname,
|
|
const FileOptions& file_opts,
|
|
std::unique_ptr<FSWritableFile>* result,
|
|
IODebugContext* dbg) override;
|
|
IOStatus ReopenWritableFile(const std::string& fname,
|
|
const FileOptions& options,
|
|
std::unique_ptr<FSWritableFile>* result,
|
|
IODebugContext* dbg) override;
|
|
IOStatus NewDirectory(const std::string& /*name*/, const IOOptions& io_opts,
|
|
std::unique_ptr<FSDirectory>* result,
|
|
IODebugContext* dbg) override;
|
|
IOStatus FileExists(const std::string& fname, const IOOptions& /*io_opts*/,
|
|
IODebugContext* /*dbg*/) override;
|
|
IOStatus GetChildren(const std::string& dir, const IOOptions& options,
|
|
std::vector<std::string>* result,
|
|
IODebugContext* dbg) override;
|
|
IOStatus DeleteFile(const std::string& fname, const IOOptions& options,
|
|
IODebugContext* dbg) override;
|
|
IOStatus Truncate(const std::string& fname, size_t size,
|
|
const IOOptions& options, IODebugContext* dbg) override;
|
|
IOStatus CreateDir(const std::string& dirname, const IOOptions& options,
|
|
IODebugContext* dbg) override;
|
|
IOStatus CreateDirIfMissing(const std::string& dirname,
|
|
const IOOptions& options,
|
|
IODebugContext* dbg) override;
|
|
IOStatus DeleteDir(const std::string& dirname, const IOOptions& options,
|
|
IODebugContext* dbg) override;
|
|
|
|
IOStatus GetFileSize(const std::string& fname, const IOOptions& options,
|
|
uint64_t* file_size, IODebugContext* dbg) override;
|
|
|
|
IOStatus GetFileModificationTime(const std::string& fname,
|
|
const IOOptions& options,
|
|
uint64_t* file_mtime,
|
|
IODebugContext* dbg) override;
|
|
IOStatus RenameFile(const std::string& src, const std::string& target,
|
|
const IOOptions& options, IODebugContext* dbg) override;
|
|
IOStatus LinkFile(const std::string& /*src*/, const std::string& /*target*/,
|
|
const IOOptions& /*options*/,
|
|
IODebugContext* /*dbg*/) override;
|
|
IOStatus LockFile(const std::string& fname, const IOOptions& options,
|
|
FileLock** lock, IODebugContext* dbg) override;
|
|
IOStatus UnlockFile(FileLock* lock, const IOOptions& options,
|
|
IODebugContext* dbg) override;
|
|
IOStatus GetTestDirectory(const IOOptions& options, std::string* path,
|
|
IODebugContext* dbg) override;
|
|
IOStatus NewLogger(const std::string& fname, const IOOptions& io_opts,
|
|
std::shared_ptr<Logger>* result,
|
|
IODebugContext* dbg) override;
|
|
// Get full directory name for this db.
|
|
IOStatus GetAbsolutePath(const std::string& db_path,
|
|
const IOOptions& /*options*/,
|
|
std::string* output_path,
|
|
IODebugContext* /*dbg*/) override;
|
|
IOStatus IsDirectory(const std::string& /*path*/,
|
|
const IOOptions& /*options*/, bool* /*is_dir*/,
|
|
IODebugContext* /*dgb*/) override {
|
|
return IOStatus::NotSupported("IsDirectory");
|
|
}
|
|
|
|
Status CorruptBuffer(const std::string& fname);
|
|
Status PrepareOptions(const ConfigOptions& options) override;
|
|
|
|
private:
|
|
bool RenameFileInternal(const std::string& src, const std::string& dest);
|
|
void DeleteFileInternal(const std::string& fname);
|
|
bool GetChildrenInternal(const std::string& fname,
|
|
std::vector<std::string>* results);
|
|
|
|
std::string NormalizeMockPath(const std::string& path);
|
|
|
|
private:
|
|
// Map from filenames to MemFile objects, representing a simple file system.
|
|
port::Mutex mutex_;
|
|
std::map<std::string, MemFile*> file_map_; // Protected by mutex_.
|
|
std::shared_ptr<SystemClock> system_clock_;
|
|
SystemClock* clock_;
|
|
bool supports_direct_io_;
|
|
};
|
|
|
|
class MockEnv : public CompositeEnvWrapper {
|
|
public:
|
|
static MockEnv* Create(Env* base);
|
|
static MockEnv* Create(Env* base, const std::shared_ptr<SystemClock>& clock);
|
|
|
|
static const char* kClassName() { return "MockEnv"; }
|
|
const char* Name() const override { return kClassName(); }
|
|
|
|
Status CorruptBuffer(const std::string& fname);
|
|
private:
|
|
MockEnv(Env* env, const std::shared_ptr<FileSystem>& fs,
|
|
const std::shared_ptr<SystemClock>& clock);
|
|
};
|
|
|
|
} // namespace ROCKSDB_NAMESPACE
|