rocksdb/db_stress_tool/db_stress_env_wrapper.h
mrambacher fe31dc53ca Make the Env class Customizable (#9293)
Summary:
Allows the Env to have options (Configurable) and loads like other Customizable classes.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9293

Reviewed By: pdillinger, zhichao-cao

Differential Revision: D33181591

Pulled By: mrambacher

fbshipit-source-id: 55e823886c654d214eda9eedd45ccdc54dac14d7
2022-01-04 16:45:49 -08:00

43 lines
1.7 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.
#ifdef GFLAGS
#pragma once
#include "db_stress_tool/db_stress_common.h"
namespace ROCKSDB_NAMESPACE {
class DbStressEnvWrapper : public EnvWrapper {
public:
explicit DbStressEnvWrapper(Env* t) : EnvWrapper(t) {}
static const char* kClassName() { return "DbStressEnv"; }
const char* Name() const override { return kClassName(); }
Status DeleteFile(const std::string& f) override {
// We determine whether it is a manifest file by searching a strong,
// so that there will be false positive if the directory path contains the
// keyword but it is unlikely.
// Checkpoint, backup, and restore directories needs to be exempted.
if (!if_preserve_all_manifests ||
f.find("MANIFEST-") == std::string::npos ||
f.find("checkpoint") != std::string::npos ||
f.find(".backup") != std::string::npos ||
f.find(".restore") != std::string::npos) {
return target()->DeleteFile(f);
}
// Rename the file instead of deletion to keep the history, and
// at the same time it is not visible to RocksDB.
return target()->RenameFile(f, f + "_renamed_");
}
// If true, all manifest files will not be delted in DeleteFile().
bool if_preserve_all_manifests = true;
};
} // namespace ROCKSDB_NAMESPACE
#endif // GFLAGS