259b6ec8da
Summary: This is a predecessor to the Configurable PR. This change moves the OptionTypeInfo maps closer to where they will be used. When the Configurable changes are adopted, these values will become static and not associated with the OptionsHelper. Pull Request resolved: https://github.com/facebook/rocksdb/pull/6198 Reviewed By: siying Differential Revision: D20778108 Pulled By: zhichao-cao fbshipit-source-id: a9f85fc73bc53503656e1958ecc1e764052fd1aa
98 lines
3.0 KiB
C++
98 lines
3.0 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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//
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// Copyright (c) 2011 The LevelDB Authors. 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. See the AUTHORS file for names of contributors.
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#pragma once
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#include <stdint.h>
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#include <memory>
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#include <string>
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#include "db/dbformat.h"
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#include "options/options_helper.h"
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#include "options/options_parser.h"
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#include "rocksdb/flush_block_policy.h"
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#include "rocksdb/table.h"
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namespace ROCKSDB_NAMESPACE {
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struct EnvOptions;
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class BlockBasedTableBuilder;
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// A class used to track actual bytes written from the tail in the recent SST
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// file opens, and provide a suggestion for following open.
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class TailPrefetchStats {
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public:
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void RecordEffectiveSize(size_t len);
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// 0 indicates no information to determine.
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size_t GetSuggestedPrefetchSize();
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private:
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const static size_t kNumTracked = 32;
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size_t records_[kNumTracked];
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port::Mutex mutex_;
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size_t next_ = 0;
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size_t num_records_ = 0;
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};
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class BlockBasedTableFactory : public TableFactory {
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public:
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explicit BlockBasedTableFactory(
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const BlockBasedTableOptions& table_options = BlockBasedTableOptions());
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~BlockBasedTableFactory() {}
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const char* Name() const override { return kName.c_str(); }
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Status NewTableReader(
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const TableReaderOptions& table_reader_options,
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std::unique_ptr<RandomAccessFileReader>&& file, uint64_t file_size,
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std::unique_ptr<TableReader>* table_reader,
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bool prefetch_index_and_filter_in_cache = true) const override;
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TableBuilder* NewTableBuilder(
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const TableBuilderOptions& table_builder_options,
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uint32_t column_family_id, WritableFileWriter* file) const override;
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// Sanitizes the specified DB Options.
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Status SanitizeOptions(const DBOptions& db_opts,
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const ColumnFamilyOptions& cf_opts) const override;
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std::string GetPrintableTableOptions() const override;
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Status GetOptionString(std::string* opt_string,
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const std::string& delimiter) const override;
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const BlockBasedTableOptions& table_options() const;
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void* GetOptions() override { return &table_options_; }
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bool IsDeleteRangeSupported() const override { return true; }
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static const std::string kName;
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private:
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BlockBasedTableOptions table_options_;
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mutable TailPrefetchStats tail_prefetch_stats_;
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};
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extern const std::string kHashIndexPrefixesBlock;
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extern const std::string kHashIndexPrefixesMetadataBlock;
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extern const std::string kPropTrue;
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extern const std::string kPropFalse;
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#ifndef ROCKSDB_LITE
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extern Status VerifyBlockBasedTableFactory(
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const BlockBasedTableFactory* base_tf,
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const BlockBasedTableFactory* file_tf,
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OptionsSanityCheckLevel sanity_check_level);
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#endif // !ROCKSDB_LITE
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} // namespace ROCKSDB_NAMESPACE
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