rocksdb/table/adaptive_table_factory.h
Yueh-Hsuan Chiang 63a2215c63 Improve Options sanitization and add MmapReadRequired() to TableFactory
Summary:
Currently, PlainTable must use mmap_reads.  When PlainTable is used but
allow_mmap_reads is not set, rocksdb will fail in flush.

This diff improve Options sanitization and add MmapReadRequired() to
TableFactory.

Test Plan:
export ROCKSDB_TESTS=PlainTableOptionsSanitizeTest
make db_test -j32
./db_test

Reviewers: sdong, ljin

Reviewed By: ljin

Subscribers: you, leveldb

Differential Revision: https://reviews.facebook.net/D21939
2014-08-20 15:53:39 -07:00

63 lines
2.0 KiB
C++

// 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
#ifndef ROCKSDB_LITE
#include "rocksdb/options.h"
#include "rocksdb/table.h"
namespace rocksdb {
struct Options;
struct EnvOptions;
using std::unique_ptr;
class Status;
class RandomAccessFile;
class WritableFile;
class Table;
class TableBuilder;
class AdaptiveTableFactory : public TableFactory {
public:
~AdaptiveTableFactory() {}
explicit AdaptiveTableFactory(
std::shared_ptr<TableFactory> table_factory_to_write,
std::shared_ptr<TableFactory> block_based_table_factory,
std::shared_ptr<TableFactory> plain_table_factory,
std::shared_ptr<TableFactory> cuckoo_table_factory);
const char* Name() const override { return "AdaptiveTableFactory"; }
Status NewTableReader(const Options& options, const EnvOptions& soptions,
const InternalKeyComparator& internal_comparator,
unique_ptr<RandomAccessFile>&& file, uint64_t file_size,
unique_ptr<TableReader>* table) const override;
TableBuilder* NewTableBuilder(const Options& options,
const InternalKeyComparator& icomparator,
WritableFile* file,
CompressionType compression_type) const
override;
// Sanitizes the specified DB Options.
Status SanitizeDBOptions(DBOptions* db_opts) const override {
if (db_opts->allow_mmap_reads == false) {
return Status::NotSupported(
"AdaptiveTable with allow_mmap_reads == false is not supported.");
}
return Status::OK();
}
private:
std::shared_ptr<TableFactory> table_factory_to_write_;
std::shared_ptr<TableFactory> block_based_table_factory_;
std::shared_ptr<TableFactory> plain_table_factory_;
std::shared_ptr<TableFactory> cuckoo_table_factory_;
};
} // namespace rocksdb
#endif // ROCKSDB_LITE