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rocksdb/table/block_based_table_factory.cc

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2.5 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.
#include "table/block_based_table_factory.h"
#include <memory>
#include <stdint.h>
#include "table/block_based_table_builder.h"
#include "table/block_based_table_reader.h"
#include "port/port.h"
namespace rocksdb {
Status BlockBasedTableFactory::NewTableReader(
const Options& options, const EnvOptions& soptions,
unique_ptr<RandomAccessFile>&& file, uint64_t file_size,
unique_ptr<TableReader>* table_reader) const {
return BlockBasedTable::Open(options, soptions, table_options_,
std::move(file), file_size, table_reader);
}
TableBuilder* BlockBasedTableFactory::NewTableBuilder(
const Options& options, WritableFile* file,
CompressionType compression_type) const {
auto flush_block_policy_factory =
table_options_.flush_block_policy_factory.get();
// if flush block policy factory is not set, we'll create the default one
// from the options.
//
// NOTE: we cannot pre-cache the "default block policy factory" because
// `FlushBlockBySizePolicyFactory` takes `options.block_size` and
// `options.block_size_deviation` as parameters, which may be different
// every time.
if (flush_block_policy_factory == nullptr) {
flush_block_policy_factory =
new FlushBlockBySizePolicyFactory(options.block_size,
options.block_size_deviation);
}
auto table_builder = new BlockBasedTableBuilder(
options,
file,
flush_block_policy_factory,
compression_type);
// Delete flush_block_policy_factory only when it's just created from the
// options.
// We can safely delete flush_block_policy_factory since it will only be used
// during the construction of `BlockBasedTableBuilder`.
if (flush_block_policy_factory !=
table_options_.flush_block_policy_factory.get()) {
delete flush_block_policy_factory;
}
return table_builder;
}
TableFactory* NewBlockBasedTableFactory(
const BlockBasedTableOptions& table_options) {
return new BlockBasedTableFactory(table_options);
}
} // namespace rocksdb