1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
// 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 "rocksdb/env.h"
#include "rocksdb/status.h"
#include "port/port.h"
#include "util/mutexlock.h"
namespace rocksdb {
class MemFile;
class MockEnv : public EnvWrapper {
public:
explicit MockEnv(Env* base_env);
virtual ~MockEnv();
// Partial implementation of the Env interface.
virtual Status NewSequentialFile(const std::string& fname,
std::unique_ptr<SequentialFile>* result,
const EnvOptions& soptions) override;
virtual Status NewRandomAccessFile(const std::string& fname,
std::unique_ptr<RandomAccessFile>* result,
const EnvOptions& soptions) override;
virtual Status NewRandomRWFile(const std::string& fname,
std::unique_ptr<RandomRWFile>* result,
const EnvOptions& options) override;
virtual Status ReuseWritableFile(const std::string& fname,
const std::string& old_fname,
std::unique_ptr<WritableFile>* result,
const EnvOptions& options) override;
virtual Status NewWritableFile(const std::string& fname,
std::unique_ptr<WritableFile>* result,
const EnvOptions& env_options) override;
virtual Status NewDirectory(const std::string& name,
std::unique_ptr<Directory>* result) override;
virtual Status FileExists(const std::string& fname) override;
virtual Status GetChildren(const std::string& dir,
std::vector<std::string>* result) override;
void DeleteFileInternal(const std::string& fname);
virtual Status DeleteFile(const std::string& fname) override;
virtual Status Truncate(const std::string& fname, size_t size) override;
virtual Status CreateDir(const std::string& dirname) override;
virtual Status CreateDirIfMissing(const std::string& dirname) override;
virtual Status DeleteDir(const std::string& dirname) override;
virtual Status GetFileSize(const std::string& fname,
uint64_t* file_size) override;
virtual Status GetFileModificationTime(const std::string& fname,
uint64_t* time) override;
virtual Status RenameFile(const std::string& src,
const std::string& target) override;
virtual Status LinkFile(const std::string& src,
const std::string& target) override;
virtual Status NewLogger(const std::string& fname,
std::shared_ptr<Logger>* result) override;
virtual Status LockFile(const std::string& fname, FileLock** flock) override;
virtual Status UnlockFile(FileLock* flock) override;
virtual Status GetTestDirectory(std::string* path) override;
// Results of these can be affected by FakeSleepForMicroseconds()
virtual Status GetCurrentTime(int64_t* unix_time) override;
virtual uint64_t NowMicros() override;
virtual uint64_t NowNanos() override;
Status CorruptBuffer(const std::string& fname);
// Doesn't really sleep, just affects output of GetCurrentTime(), NowMicros()
// and NowNanos()
void FakeSleepForMicroseconds(int64_t micros);
private:
std::string NormalizePath(const std::string path);
// Map from filenames to MemFile objects, representing a simple file system.
typedef std::map<std::string, MemFile*> FileSystem;
port::Mutex mutex_;
FileSystem file_map_; // Protected by mutex_.
std::atomic<int64_t> fake_sleep_micros_;
};
} // namespace rocksdb
|
