mirror of
https://github.com/facebook/rocksdb.git
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4720ba4391
Summary: We haven't been actively mantaining RocksDB LITE recently and the size must have been gone up significantly. We are removing the support. Most of changes were done through following comments: unifdef -m -UROCKSDB_LITE `git grep -l ROCKSDB_LITE | egrep '[.](cc|h)'` by Peter Dillinger. Others changes were manually applied to build scripts, CircleCI manifests, ROCKSDB_LITE is used in an expression and file db_stress_test_base.cc. Pull Request resolved: https://github.com/facebook/rocksdb/pull/11147 Test Plan: See CI Reviewed By: pdillinger Differential Revision: D42796341 fbshipit-source-id: 4920e15fc2060c2cd2221330a6d0e5e65d4b7fe2
106 lines
3.9 KiB
C++
106 lines
3.9 KiB
C++
// Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#pragma once
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#include "rocksdb/file_system.h"
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namespace ROCKSDB_NAMESPACE {
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// A FileSystem wrapper that only allows read-only operation.
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//
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// This class has not been fully analyzed for providing strong security
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// guarantees.
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class ReadOnlyFileSystem : public FileSystemWrapper {
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static inline IOStatus FailReadOnly() {
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IOStatus s = IOStatus::IOError("Attempted write to ReadOnlyFileSystem");
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assert(s.GetRetryable() == false);
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return s;
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}
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public:
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explicit ReadOnlyFileSystem(const std::shared_ptr<FileSystem>& base)
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: FileSystemWrapper(base) {}
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static const char* kClassName() { return "ReadOnlyFileSystem"; }
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const char* Name() const override { return kClassName(); }
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IOStatus NewWritableFile(const std::string& /*fname*/,
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const FileOptions& /*options*/,
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std::unique_ptr<FSWritableFile>* /*result*/,
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IODebugContext* /*dbg*/) override {
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return FailReadOnly();
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}
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IOStatus ReuseWritableFile(const std::string& /*fname*/,
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const std::string& /*old_fname*/,
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const FileOptions& /*options*/,
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std::unique_ptr<FSWritableFile>* /*result*/,
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IODebugContext* /*dbg*/) override {
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return FailReadOnly();
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}
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IOStatus NewRandomRWFile(const std::string& /*fname*/,
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const FileOptions& /*options*/,
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std::unique_ptr<FSRandomRWFile>* /*result*/,
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IODebugContext* /*dbg*/) override {
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return FailReadOnly();
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}
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IOStatus NewDirectory(const std::string& /*dir*/,
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const IOOptions& /*options*/,
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std::unique_ptr<FSDirectory>* /*result*/,
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IODebugContext* /*dbg*/) override {
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return FailReadOnly();
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}
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IOStatus DeleteFile(const std::string& /*fname*/,
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const IOOptions& /*options*/,
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IODebugContext* /*dbg*/) override {
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return FailReadOnly();
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}
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IOStatus CreateDir(const std::string& /*dirname*/,
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const IOOptions& /*options*/,
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IODebugContext* /*dbg*/) override {
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return FailReadOnly();
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}
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IOStatus CreateDirIfMissing(const std::string& dirname,
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const IOOptions& options,
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IODebugContext* dbg) override {
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// Allow if dir already exists
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bool is_dir = false;
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IOStatus s = IsDirectory(dirname, options, &is_dir, dbg);
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if (s.ok() && is_dir) {
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return s;
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} else {
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return FailReadOnly();
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}
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}
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IOStatus DeleteDir(const std::string& /*dirname*/,
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const IOOptions& /*options*/,
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IODebugContext* /*dbg*/) override {
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return FailReadOnly();
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}
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IOStatus RenameFile(const std::string& /*src*/, const std::string& /*dest*/,
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const IOOptions& /*options*/,
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IODebugContext* /*dbg*/) override {
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return FailReadOnly();
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}
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IOStatus LinkFile(const std::string& /*src*/, const std::string& /*dest*/,
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const IOOptions& /*options*/,
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IODebugContext* /*dbg*/) override {
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return FailReadOnly();
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}
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IOStatus LockFile(const std::string& /*fname*/, const IOOptions& /*options*/,
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FileLock** /*lock*/, IODebugContext* /*dbg*/) override {
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return FailReadOnly();
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}
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IOStatus NewLogger(const std::string& /*fname*/, const IOOptions& /*options*/,
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std::shared_ptr<Logger>* /*result*/,
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IODebugContext* /*dbg*/) override {
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return FailReadOnly();
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}
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};
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} // namespace ROCKSDB_NAMESPACE
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