mirror of https://github.com/facebook/rocksdb.git
100 lines
3.4 KiB
C++
100 lines
3.4 KiB
C++
// Copyright (c) 2013, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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//
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// Copyright (c) 2012 Facebook. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#pragma once
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#include "db/db_impl.h"
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#include <deque>
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#include <set>
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#include "db/dbformat.h"
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#include "db/log_writer.h"
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#include "db/snapshot.h"
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#include "rocksdb/db.h"
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#include "rocksdb/env.h"
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#include "port/port.h"
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#include "util/stats_logger.h"
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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 Options& 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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const ColumnFamilyHandle& column_family, const Slice& key,
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std::string* value);
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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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virtual Status NewIterators(
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const ReadOptions& options,
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const std::vector<ColumnFamilyHandle>& column_family,
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std::vector<Iterator*>* iterators) {
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// TODO
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return Status::NotSupported("Not supported yet.");
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}
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using DBImpl::Put;
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virtual Status Put(const WriteOptions& options,
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const ColumnFamilyHandle& column_family, const Slice& key,
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const Slice& value) {
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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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const ColumnFamilyHandle& column_family, const Slice& key,
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const Slice& value) {
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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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const ColumnFamilyHandle& column_family,
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const Slice& key) {
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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, WriteBatch* updates) {
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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 void CompactRange(const ColumnFamilyHandle& column_family,
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const Slice* begin, const Slice* end,
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bool reduce_level = false, int target_level = -1) {}
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virtual Status DisableFileDeletions() {
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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) {
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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>&,
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uint64_t* manifest_file_size,
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bool flush_memtable = true) {
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return Status::NotSupported("Not supported operation in read only mode.");
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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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const ColumnFamilyHandle& column_family) {
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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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