5665e5e285
Summary: As a preparation to support updating some options dynamically, I'd like to first introduce ImmutableOptions, which is a subset of Options that cannot be changed during the course of a DB lifetime without restart. ColumnFamily will keep both Options and ImmutableOptions. Any component below ColumnFamily should only take ImmutableOptions in their constructor. Other options should be taken from APIs, which will be allowed to adjust dynamically. I am yet to make changes to memtable and other related classes to take ImmutableOptions in their ctor. That can be done in a seprate diff as this one is already pretty big. Test Plan: make all check Reviewers: yhchiang, igor, sdong Reviewed By: sdong Subscribers: leveldb, dhruba Differential Revision: https://reviews.facebook.net/D22545
63 lines
1.9 KiB
C++
63 lines
1.9 KiB
C++
// Copyright (c) 2013, Facebook, Inc. All rights reserved.
|
|
// This source code is licensed under the BSD-style license found in the
|
|
// LICENSE file in the root directory of this source tree. An additional grant
|
|
// of patent rights can be found in the PATENTS file in the same 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.
|
|
|
|
#pragma once
|
|
#include <stdint.h>
|
|
|
|
#include <memory>
|
|
#include <string>
|
|
|
|
#include "rocksdb/flush_block_policy.h"
|
|
#include "rocksdb/table.h"
|
|
#include "db/dbformat.h"
|
|
|
|
namespace rocksdb {
|
|
|
|
struct EnvOptions;
|
|
|
|
using std::unique_ptr;
|
|
class BlockBasedTableBuilder;
|
|
|
|
class BlockBasedTableFactory : public TableFactory {
|
|
public:
|
|
explicit BlockBasedTableFactory(
|
|
const BlockBasedTableOptions& table_options = BlockBasedTableOptions());
|
|
|
|
~BlockBasedTableFactory() {}
|
|
|
|
const char* Name() const override { return "BlockBasedTable"; }
|
|
|
|
Status NewTableReader(
|
|
const ImmutableCFOptions& ioptions, const EnvOptions& soptions,
|
|
const InternalKeyComparator& internal_comparator,
|
|
unique_ptr<RandomAccessFile>&& file, uint64_t file_size,
|
|
unique_ptr<TableReader>* table_reader) const override;
|
|
|
|
TableBuilder* NewTableBuilder(
|
|
const ImmutableCFOptions& ioptions,
|
|
const InternalKeyComparator& internal_comparator,
|
|
WritableFile* file, const CompressionType compression_type,
|
|
const CompressionOptions& compression_opts) const override;
|
|
|
|
// Sanitizes the specified DB Options.
|
|
Status SanitizeDBOptions(const DBOptions* db_opts) const override {
|
|
return Status::OK();
|
|
}
|
|
|
|
std::string GetPrintableTableOptions() const override;
|
|
|
|
private:
|
|
BlockBasedTableOptions table_options_;
|
|
};
|
|
|
|
extern const std::string kHashIndexPrefixesBlock;
|
|
extern const std::string kHashIndexPrefixesMetadataBlock;
|
|
|
|
} // namespace rocksdb
|