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rocksdb/table/block_based_table_factory.h

78 lines
2.8 KiB

// 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<RandomAccessFileReader>&& file,
uint64_t file_size,
unique_ptr<TableReader>* table_reader) const override {
return NewTableReader(ioptions, soptions, internal_comparator,
std::move(file), file_size, table_reader,
/*prefetch_index_and_filter=*/true);
}
// This is a variant of virtual member function NewTableReader function with
// added capability to disable pre-fetching of blocks on BlockBasedTable::Open
Status NewTableReader(const ImmutableCFOptions& ioptions,
const EnvOptions& soptions,
const InternalKeyComparator& internal_comparator,
unique_ptr<RandomAccessFileReader>&& file,
uint64_t file_size,
unique_ptr<TableReader>* table_reader,
bool prefetch_index_and_filter) const;
TableBuilder* NewTableBuilder(
const TableBuilderOptions& table_builder_options,
WritableFileWriter* file) const override;
// Sanitizes the specified DB Options.
Status SanitizeOptions(const DBOptions& db_opts,
const ColumnFamilyOptions& cf_opts) const override;
std::string GetPrintableTableOptions() const override;
const BlockBasedTableOptions& GetTableOptions() const;
private:
BlockBasedTableOptions table_options_;
};
extern const std::string kHashIndexPrefixesBlock;
extern const std::string kHashIndexPrefixesMetadataBlock;
extern const std::string kPropTrue;
extern const std::string kPropFalse;
} // namespace rocksdb