fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
430 lines
14 KiB
430 lines
14 KiB
// 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 2014 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.
|
|
|
|
// This test uses a custom FileSystem to keep track of the state of a file
|
|
// system the last "Sync". The data being written is cached in a "buffer".
|
|
// Only when "Sync" is called, the data will be persistent. It can similate
|
|
// file data loss (or entire files) not protected by a "Sync". For any of the
|
|
// FileSystem related operations, by specify the "IOStatus Error", a specific
|
|
// error can be returned when file system is not activated.
|
|
|
|
#include "test_util/fault_injection_test_fs.h"
|
|
#include <functional>
|
|
#include <utility>
|
|
|
|
namespace ROCKSDB_NAMESPACE {
|
|
|
|
// Assume a filename, and not a directory name like "/foo/bar/"
|
|
std::string TestFSGetDirName(const std::string filename) {
|
|
size_t found = filename.find_last_of("/\\");
|
|
if (found == std::string::npos) {
|
|
return "";
|
|
} else {
|
|
return filename.substr(0, found);
|
|
}
|
|
}
|
|
|
|
// Trim the tailing "/" in the end of `str`
|
|
std::string TestFSTrimDirname(const std::string& str) {
|
|
size_t found = str.find_last_not_of("/");
|
|
if (found == std::string::npos) {
|
|
return str;
|
|
}
|
|
return str.substr(0, found + 1);
|
|
}
|
|
|
|
// Return pair <parent directory name, file name> of a full path.
|
|
std::pair<std::string, std::string> TestFSGetDirAndName(
|
|
const std::string& name) {
|
|
std::string dirname = TestFSGetDirName(name);
|
|
std::string fname = name.substr(dirname.size() + 1);
|
|
return std::make_pair(dirname, fname);
|
|
}
|
|
|
|
IOStatus FSFileState::DropUnsyncedData() {
|
|
buffer_.resize(0);
|
|
return IOStatus::OK();
|
|
}
|
|
|
|
IOStatus FSFileState::DropRandomUnsyncedData(Random* rand) {
|
|
int range = static_cast<int>(buffer_.size());
|
|
size_t truncated_size = static_cast<size_t>(rand->Uniform(range));
|
|
buffer_.resize(truncated_size);
|
|
return IOStatus::OK();
|
|
}
|
|
|
|
IOStatus TestFSDirectory::Fsync(const IOOptions& options, IODebugContext* dbg) {
|
|
if (!fs_->IsFilesystemActive()) {
|
|
return fs_->GetError();
|
|
}
|
|
fs_->SyncDir(dirname_);
|
|
return dir_->Fsync(options, dbg);
|
|
}
|
|
|
|
TestFSWritableFile::TestFSWritableFile(const std::string& fname,
|
|
std::unique_ptr<FSWritableFile>&& f,
|
|
FaultInjectionTestFS* fs)
|
|
: state_(fname),
|
|
target_(std::move(f)),
|
|
writable_file_opened_(true),
|
|
fs_(fs) {
|
|
assert(target_ != nullptr);
|
|
state_.pos_ = 0;
|
|
}
|
|
|
|
TestFSWritableFile::~TestFSWritableFile() {
|
|
if (writable_file_opened_) {
|
|
Close(IOOptions(), nullptr);
|
|
}
|
|
}
|
|
|
|
IOStatus TestFSWritableFile::Append(const Slice& data, const IOOptions&,
|
|
IODebugContext*) {
|
|
MutexLock l(&mutex_);
|
|
if (!fs_->IsFilesystemActive()) {
|
|
return fs_->GetError();
|
|
}
|
|
state_.buffer_.append(data.data(), data.size());
|
|
state_.pos_ += data.size();
|
|
fs_->WritableFileAppended(state_);
|
|
return IOStatus::OK();
|
|
}
|
|
|
|
IOStatus TestFSWritableFile::Close(const IOOptions& options,
|
|
IODebugContext* dbg) {
|
|
if (!fs_->IsFilesystemActive()) {
|
|
return fs_->GetError();
|
|
}
|
|
writable_file_opened_ = false;
|
|
IOStatus io_s;
|
|
io_s = target_->Append(state_.buffer_, options, dbg);
|
|
if (io_s.ok()) {
|
|
state_.buffer_.resize(0);
|
|
target_->Sync(options, dbg);
|
|
io_s = target_->Close(options, dbg);
|
|
}
|
|
if (io_s.ok()) {
|
|
fs_->WritableFileClosed(state_);
|
|
}
|
|
return io_s;
|
|
}
|
|
|
|
IOStatus TestFSWritableFile::Flush(const IOOptions&, IODebugContext*) {
|
|
if (!fs_->IsFilesystemActive()) {
|
|
return fs_->GetError();
|
|
}
|
|
IOStatus io_s;
|
|
if (io_s.ok() && fs_->IsFilesystemActive()) {
|
|
state_.pos_at_last_flush_ = state_.pos_;
|
|
}
|
|
return io_s;
|
|
}
|
|
|
|
IOStatus TestFSWritableFile::Sync(const IOOptions& options,
|
|
IODebugContext* dbg) {
|
|
if (!fs_->IsFilesystemActive()) {
|
|
return fs_->GetError();
|
|
}
|
|
IOStatus io_s = target_->Append(state_.buffer_, options, dbg);
|
|
state_.buffer_.resize(0);
|
|
target_->Sync(options, dbg);
|
|
state_.pos_at_last_sync_ = state_.pos_;
|
|
fs_->WritableFileSynced(state_);
|
|
return io_s;
|
|
}
|
|
|
|
TestFSRandomRWFile::TestFSRandomRWFile(const std::string& /*fname*/,
|
|
std::unique_ptr<FSRandomRWFile>&& f,
|
|
FaultInjectionTestFS* fs)
|
|
: target_(std::move(f)), file_opened_(true), fs_(fs) {
|
|
assert(target_ != nullptr);
|
|
}
|
|
|
|
TestFSRandomRWFile::~TestFSRandomRWFile() {
|
|
if (file_opened_) {
|
|
Close(IOOptions(), nullptr);
|
|
}
|
|
}
|
|
|
|
IOStatus TestFSRandomRWFile::Write(uint64_t offset, const Slice& data,
|
|
const IOOptions& options,
|
|
IODebugContext* dbg) {
|
|
if (!fs_->IsFilesystemActive()) {
|
|
return fs_->GetError();
|
|
}
|
|
return target_->Write(offset, data, options, dbg);
|
|
}
|
|
|
|
IOStatus TestFSRandomRWFile::Read(uint64_t offset, size_t n,
|
|
const IOOptions& options, Slice* result,
|
|
char* scratch, IODebugContext* dbg) const {
|
|
if (!fs_->IsFilesystemActive()) {
|
|
return fs_->GetError();
|
|
}
|
|
return target_->Read(offset, n, options, result, scratch, dbg);
|
|
}
|
|
|
|
IOStatus TestFSRandomRWFile::Close(const IOOptions& options,
|
|
IODebugContext* dbg) {
|
|
if (!fs_->IsFilesystemActive()) {
|
|
return fs_->GetError();
|
|
}
|
|
file_opened_ = false;
|
|
return target_->Close(options, dbg);
|
|
}
|
|
|
|
IOStatus TestFSRandomRWFile::Flush(const IOOptions& options,
|
|
IODebugContext* dbg) {
|
|
if (!fs_->IsFilesystemActive()) {
|
|
return fs_->GetError();
|
|
}
|
|
return target_->Flush(options, dbg);
|
|
}
|
|
|
|
IOStatus TestFSRandomRWFile::Sync(const IOOptions& options,
|
|
IODebugContext* dbg) {
|
|
if (!fs_->IsFilesystemActive()) {
|
|
return fs_->GetError();
|
|
}
|
|
return target_->Sync(options, dbg);
|
|
}
|
|
|
|
IOStatus FaultInjectionTestFS::NewDirectory(
|
|
const std::string& name, const IOOptions& options,
|
|
std::unique_ptr<FSDirectory>* result, IODebugContext* dbg) {
|
|
std::unique_ptr<FSDirectory> r;
|
|
IOStatus io_s = target()->NewDirectory(name, options, &r, dbg);
|
|
assert(io_s.ok());
|
|
if (!io_s.ok()) {
|
|
return io_s;
|
|
}
|
|
result->reset(
|
|
new TestFSDirectory(this, TestFSTrimDirname(name), r.release()));
|
|
return IOStatus::OK();
|
|
}
|
|
|
|
IOStatus FaultInjectionTestFS::NewWritableFile(
|
|
const std::string& fname, const FileOptions& file_opts,
|
|
std::unique_ptr<FSWritableFile>* result, IODebugContext* dbg) {
|
|
if (!IsFilesystemActive()) {
|
|
return GetError();
|
|
}
|
|
// Not allow overwriting files
|
|
IOStatus io_s = target()->FileExists(fname, IOOptions(), dbg);
|
|
if (io_s.ok()) {
|
|
return IOStatus::Corruption("File already exists.");
|
|
} else if (!io_s.IsNotFound()) {
|
|
assert(io_s.IsIOError());
|
|
return io_s;
|
|
}
|
|
io_s = target()->NewWritableFile(fname, file_opts, result, dbg);
|
|
if (io_s.ok()) {
|
|
result->reset(new TestFSWritableFile(fname, std::move(*result), this));
|
|
// WritableFileWriter* file is opened
|
|
// again then it will be truncated - so forget our saved state.
|
|
UntrackFile(fname);
|
|
MutexLock l(&mutex_);
|
|
open_files_.insert(fname);
|
|
auto dir_and_name = TestFSGetDirAndName(fname);
|
|
auto& list = dir_to_new_files_since_last_sync_[dir_and_name.first];
|
|
list.insert(dir_and_name.second);
|
|
}
|
|
return io_s;
|
|
}
|
|
|
|
IOStatus FaultInjectionTestFS::ReopenWritableFile(
|
|
const std::string& fname, const FileOptions& file_opts,
|
|
std::unique_ptr<FSWritableFile>* result, IODebugContext* dbg) {
|
|
if (!IsFilesystemActive()) {
|
|
return GetError();
|
|
}
|
|
IOStatus io_s = target()->ReopenWritableFile(fname, file_opts, result, dbg);
|
|
if (io_s.ok()) {
|
|
result->reset(new TestFSWritableFile(fname, std::move(*result), this));
|
|
// WritableFileWriter* file is opened
|
|
// again then it will be truncated - so forget our saved state.
|
|
UntrackFile(fname);
|
|
MutexLock l(&mutex_);
|
|
open_files_.insert(fname);
|
|
auto dir_and_name = TestFSGetDirAndName(fname);
|
|
auto& list = dir_to_new_files_since_last_sync_[dir_and_name.first];
|
|
list.insert(dir_and_name.second);
|
|
}
|
|
return io_s;
|
|
}
|
|
|
|
IOStatus FaultInjectionTestFS::NewRandomRWFile(
|
|
const std::string& fname, const FileOptions& file_opts,
|
|
std::unique_ptr<FSRandomRWFile>* result, IODebugContext* dbg) {
|
|
if (!IsFilesystemActive()) {
|
|
return GetError();
|
|
}
|
|
IOStatus io_s = target()->NewRandomRWFile(fname, file_opts, result, dbg);
|
|
if (io_s.ok()) {
|
|
result->reset(new TestFSRandomRWFile(fname, std::move(*result), this));
|
|
// WritableFileWriter* file is opened
|
|
// again then it will be truncated - so forget our saved state.
|
|
UntrackFile(fname);
|
|
MutexLock l(&mutex_);
|
|
open_files_.insert(fname);
|
|
auto dir_and_name = TestFSGetDirAndName(fname);
|
|
auto& list = dir_to_new_files_since_last_sync_[dir_and_name.first];
|
|
list.insert(dir_and_name.second);
|
|
}
|
|
return io_s;
|
|
}
|
|
|
|
IOStatus FaultInjectionTestFS::NewRandomAccessFile(
|
|
const std::string& fname, const FileOptions& file_opts,
|
|
std::unique_ptr<FSRandomAccessFile>* result, IODebugContext* dbg) {
|
|
if (!IsFilesystemActive()) {
|
|
return GetError();
|
|
}
|
|
return target()->NewRandomAccessFile(fname, file_opts, result, dbg);
|
|
}
|
|
|
|
IOStatus FaultInjectionTestFS::DeleteFile(const std::string& f,
|
|
const IOOptions& options,
|
|
IODebugContext* dbg) {
|
|
if (!IsFilesystemActive()) {
|
|
return GetError();
|
|
}
|
|
IOStatus io_s = FileSystemWrapper::DeleteFile(f, options, dbg);
|
|
if (!io_s.ok()) {
|
|
fprintf(stderr, "Cannot delete file %s: %s\n", f.c_str(),
|
|
io_s.ToString().c_str());
|
|
}
|
|
if (io_s.ok()) {
|
|
UntrackFile(f);
|
|
}
|
|
return io_s;
|
|
}
|
|
|
|
IOStatus FaultInjectionTestFS::RenameFile(const std::string& s,
|
|
const std::string& t,
|
|
const IOOptions& options,
|
|
IODebugContext* dbg) {
|
|
if (!IsFilesystemActive()) {
|
|
return GetError();
|
|
}
|
|
IOStatus io_s = FileSystemWrapper::RenameFile(s, t, options, dbg);
|
|
|
|
if (io_s.ok()) {
|
|
MutexLock l(&mutex_);
|
|
if (db_file_state_.find(s) != db_file_state_.end()) {
|
|
db_file_state_[t] = db_file_state_[s];
|
|
db_file_state_.erase(s);
|
|
}
|
|
|
|
auto sdn = TestFSGetDirAndName(s);
|
|
auto tdn = TestFSGetDirAndName(t);
|
|
if (dir_to_new_files_since_last_sync_[sdn.first].erase(sdn.second) != 0) {
|
|
auto& tlist = dir_to_new_files_since_last_sync_[tdn.first];
|
|
assert(tlist.find(tdn.second) == tlist.end());
|
|
tlist.insert(tdn.second);
|
|
}
|
|
}
|
|
|
|
return io_s;
|
|
}
|
|
|
|
void FaultInjectionTestFS::WritableFileClosed(const FSFileState& state) {
|
|
MutexLock l(&mutex_);
|
|
if (open_files_.find(state.filename_) != open_files_.end()) {
|
|
db_file_state_[state.filename_] = state;
|
|
open_files_.erase(state.filename_);
|
|
}
|
|
}
|
|
|
|
void FaultInjectionTestFS::WritableFileSynced(const FSFileState& state) {
|
|
MutexLock l(&mutex_);
|
|
if (open_files_.find(state.filename_) != open_files_.end()) {
|
|
if (db_file_state_.find(state.filename_) == db_file_state_.end()) {
|
|
db_file_state_.insert(std::make_pair(state.filename_, state));
|
|
} else {
|
|
db_file_state_[state.filename_] = state;
|
|
}
|
|
}
|
|
}
|
|
|
|
void FaultInjectionTestFS::WritableFileAppended(const FSFileState& state) {
|
|
MutexLock l(&mutex_);
|
|
if (open_files_.find(state.filename_) != open_files_.end()) {
|
|
if (db_file_state_.find(state.filename_) == db_file_state_.end()) {
|
|
db_file_state_.insert(std::make_pair(state.filename_, state));
|
|
} else {
|
|
db_file_state_[state.filename_] = state;
|
|
}
|
|
}
|
|
}
|
|
|
|
IOStatus FaultInjectionTestFS::DropUnsyncedFileData() {
|
|
IOStatus io_s;
|
|
MutexLock l(&mutex_);
|
|
for (std::map<std::string, FSFileState>::iterator it = db_file_state_.begin();
|
|
io_s.ok() && it != db_file_state_.end(); ++it) {
|
|
FSFileState& fs_state = it->second;
|
|
if (!fs_state.IsFullySynced()) {
|
|
io_s = fs_state.DropUnsyncedData();
|
|
}
|
|
}
|
|
return io_s;
|
|
}
|
|
|
|
IOStatus FaultInjectionTestFS::DropRandomUnsyncedFileData(Random* rnd) {
|
|
IOStatus io_s;
|
|
MutexLock l(&mutex_);
|
|
for (std::map<std::string, FSFileState>::iterator it = db_file_state_.begin();
|
|
io_s.ok() && it != db_file_state_.end(); ++it) {
|
|
FSFileState& fs_state = it->second;
|
|
if (!fs_state.IsFullySynced()) {
|
|
io_s = fs_state.DropRandomUnsyncedData(rnd);
|
|
}
|
|
}
|
|
return io_s;
|
|
}
|
|
|
|
IOStatus FaultInjectionTestFS::DeleteFilesCreatedAfterLastDirSync(
|
|
const IOOptions& options, IODebugContext* dbg) {
|
|
// Because DeleteFile access this container make a copy to avoid deadlock
|
|
std::map<std::string, std::set<std::string>> map_copy;
|
|
{
|
|
MutexLock l(&mutex_);
|
|
map_copy.insert(dir_to_new_files_since_last_sync_.begin(),
|
|
dir_to_new_files_since_last_sync_.end());
|
|
}
|
|
|
|
for (auto& pair : map_copy) {
|
|
for (std::string name : pair.second) {
|
|
IOStatus io_s = DeleteFile(pair.first + "/" + name, options, dbg);
|
|
if (!io_s.ok()) {
|
|
return io_s;
|
|
}
|
|
}
|
|
}
|
|
return IOStatus::OK();
|
|
}
|
|
|
|
void FaultInjectionTestFS::ResetState() {
|
|
MutexLock l(&mutex_);
|
|
db_file_state_.clear();
|
|
dir_to_new_files_since_last_sync_.clear();
|
|
SetFilesystemActiveNoLock(true);
|
|
}
|
|
|
|
void FaultInjectionTestFS::UntrackFile(const std::string& f) {
|
|
MutexLock l(&mutex_);
|
|
auto dir_and_name = TestFSGetDirAndName(f);
|
|
dir_to_new_files_since_last_sync_[dir_and_name.first].erase(
|
|
dir_and_name.second);
|
|
db_file_state_.erase(f);
|
|
open_files_.erase(f);
|
|
}
|
|
|
|
} // namespace ROCKSDB_NAMESPACE
|
|
|