ec43385bf3
Summary: 1. DBImplReadOnly::GetLiveFiles should not return NotSupported. Instead, it should call DBImpl::GetLiveFiles(flush_memtable=false). 2. In DBImp::Recover, we should also recover the OPTIONS file name and/or number so that an immediate subsequent GetLiveFiles will get the correct OPTIONS name. Pull Request resolved: https://github.com/facebook/rocksdb/pull/4681 Differential Revision: D13069205 Pulled By: riversand963 fbshipit-source-id: 3e6a0174307d06db5a01feb099b306cea1f7f88a
128 lines
4.7 KiB
C++
128 lines
4.7 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. 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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#ifndef ROCKSDB_LITE
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#include "db/db_impl.h"
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#include <vector>
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#include <string>
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namespace rocksdb {
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class DBImplReadOnly : public DBImpl {
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public:
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DBImplReadOnly(const DBOptions& options, const std::string& dbname);
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virtual ~DBImplReadOnly();
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// Implementations of the DB interface
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using DB::Get;
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virtual Status Get(const ReadOptions& options,
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ColumnFamilyHandle* column_family, const Slice& key,
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PinnableSlice* value) override;
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// TODO: Implement ReadOnly MultiGet?
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using DBImpl::NewIterator;
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virtual Iterator* NewIterator(const ReadOptions&,
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ColumnFamilyHandle* column_family) override;
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virtual Status NewIterators(
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const ReadOptions& options,
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const std::vector<ColumnFamilyHandle*>& column_families,
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std::vector<Iterator*>* iterators) override;
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using DBImpl::Put;
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virtual Status Put(const WriteOptions& /*options*/,
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ColumnFamilyHandle* /*column_family*/,
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const Slice& /*key*/, const Slice& /*value*/) override {
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return Status::NotSupported("Not supported operation in read only mode.");
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}
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using DBImpl::Merge;
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virtual Status Merge(const WriteOptions& /*options*/,
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ColumnFamilyHandle* /*column_family*/,
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const Slice& /*key*/, const Slice& /*value*/) override {
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return Status::NotSupported("Not supported operation in read only mode.");
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}
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using DBImpl::Delete;
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virtual Status Delete(const WriteOptions& /*options*/,
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ColumnFamilyHandle* /*column_family*/,
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const Slice& /*key*/) override {
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return Status::NotSupported("Not supported operation in read only mode.");
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}
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using DBImpl::SingleDelete;
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virtual Status SingleDelete(const WriteOptions& /*options*/,
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ColumnFamilyHandle* /*column_family*/,
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const Slice& /*key*/) override {
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return Status::NotSupported("Not supported operation in read only mode.");
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}
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virtual Status Write(const WriteOptions& /*options*/,
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WriteBatch* /*updates*/) override {
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return Status::NotSupported("Not supported operation in read only mode.");
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}
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using DBImpl::CompactRange;
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virtual Status CompactRange(const CompactRangeOptions& /*options*/,
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ColumnFamilyHandle* /*column_family*/,
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const Slice* /*begin*/,
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const Slice* /*end*/) override {
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return Status::NotSupported("Not supported operation in read only mode.");
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}
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using DBImpl::CompactFiles;
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virtual Status CompactFiles(
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const CompactionOptions& /*compact_options*/,
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ColumnFamilyHandle* /*column_family*/,
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const std::vector<std::string>& /*input_file_names*/,
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const int /*output_level*/, const int /*output_path_id*/ = -1,
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std::vector<std::string>* const /*output_file_names*/ = nullptr
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) override {
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return Status::NotSupported("Not supported operation in read only mode.");
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}
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virtual Status DisableFileDeletions() override {
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return Status::NotSupported("Not supported operation in read only mode.");
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}
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virtual Status EnableFileDeletions(bool /*force*/) override {
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return Status::NotSupported("Not supported operation in read only mode.");
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}
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virtual Status GetLiveFiles(std::vector<std::string>& ret,
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uint64_t* manifest_file_size,
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bool /*flush_memtable*/) override {
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return DBImpl::GetLiveFiles(ret, manifest_file_size,
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false /* flush_memtable */);
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}
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using DBImpl::Flush;
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virtual Status Flush(const FlushOptions& /*options*/,
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ColumnFamilyHandle* /*column_family*/) override {
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return Status::NotSupported("Not supported operation in read only mode.");
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}
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using DBImpl::SyncWAL;
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virtual Status SyncWAL() override {
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return Status::NotSupported("Not supported operation in read only mode.");
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}
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using DB::IngestExternalFile;
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virtual Status IngestExternalFile(
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ColumnFamilyHandle* /*column_family*/,
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const std::vector<std::string>& /*external_files*/,
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const IngestExternalFileOptions& /*ingestion_options*/) override {
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return Status::NotSupported("Not supported operation in read only mode.");
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}
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private:
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friend class DB;
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// No copying allowed
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DBImplReadOnly(const DBImplReadOnly&);
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void operator=(const DBImplReadOnly&);
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};
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}
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#endif // !ROCKSDB_LITE
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