74939a9e13
Summary: This patch introduced a new table options that allows us to make block-based table's index pluggable. To support that new features: * Code has been refacotred to be more flexible and supports this option well. * More documentation is added for the existing obsecure functionalities. * Big surgeon on DataBlockReader(), where the logic was really convoluted. * Other small code cleanups. The pluggablility will mostly affect development of internal modules and won't change frequently, as a result I intentionally avoid heavy-weight patterns (like factory) and try to make it simple. Test Plan: make all check Reviewers: haobo, sdong Reviewed By: sdong CC: leveldb Differential Revision: https://reviews.facebook.net/D16395
61 lines
2.1 KiB
C++
61 lines
2.1 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) 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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#include "table/block_based_table_factory.h"
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#include <memory>
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#include <string>
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#include <stdint.h>
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#include "rocksdb/flush_block_policy.h"
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#include "table/block_based_table_builder.h"
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#include "table/block_based_table_reader.h"
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#include "port/port.h"
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namespace rocksdb {
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BlockBasedTableFactory::BlockBasedTableFactory(
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const BlockBasedTableOptions& table_options)
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: table_options_(table_options) {
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if (table_options_.flush_block_policy_factory == nullptr) {
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table_options_.flush_block_policy_factory.reset(
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new FlushBlockBySizePolicyFactory());
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}
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}
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Status BlockBasedTableFactory::NewTableReader(
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const Options& options, const EnvOptions& soptions,
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const InternalKeyComparator& internal_comparator,
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unique_ptr<RandomAccessFile>&& file, uint64_t file_size,
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unique_ptr<TableReader>* table_reader) const {
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return BlockBasedTable::Open(options, soptions, table_options_,
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internal_comparator, std::move(file), file_size,
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table_reader);
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}
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TableBuilder* BlockBasedTableFactory::NewTableBuilder(
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const Options& options, const InternalKeyComparator& internal_comparator,
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WritableFile* file, CompressionType compression_type) const {
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auto table_builder = new BlockBasedTableBuilder(
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options, table_options_, internal_comparator, file, compression_type);
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return table_builder;
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}
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TableFactory* NewBlockBasedTableFactory(
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const BlockBasedTableOptions& table_options) {
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return new BlockBasedTableFactory(table_options);
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}
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const std::string BlockBasedTablePropertyNames::kIndexType =
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"rocksdb.block.based.table.index.type";
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} // namespace rocksdb
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