mirror of https://github.com/facebook/rocksdb.git
124 lines
4.8 KiB
C++
124 lines
4.8 KiB
C++
// 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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#ifndef ROCKSDB_LITE
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#include "table/adaptive_table_factory.h"
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#include "table/table_builder.h"
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#include "table/format.h"
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#include "port/port.h"
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namespace rocksdb {
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AdaptiveTableFactory::AdaptiveTableFactory(
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std::shared_ptr<TableFactory> table_factory_to_write,
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std::shared_ptr<TableFactory> block_based_table_factory,
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std::shared_ptr<TableFactory> plain_table_factory,
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std::shared_ptr<TableFactory> cuckoo_table_factory)
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: table_factory_to_write_(table_factory_to_write),
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block_based_table_factory_(block_based_table_factory),
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plain_table_factory_(plain_table_factory),
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cuckoo_table_factory_(cuckoo_table_factory) {
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if (!plain_table_factory_) {
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plain_table_factory_.reset(NewPlainTableFactory());
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}
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if (!block_based_table_factory_) {
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block_based_table_factory_.reset(NewBlockBasedTableFactory());
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}
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if (!cuckoo_table_factory_) {
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cuckoo_table_factory_.reset(NewCuckooTableFactory());
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}
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if (!table_factory_to_write_) {
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table_factory_to_write_ = block_based_table_factory_;
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}
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}
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extern const uint64_t kPlainTableMagicNumber;
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extern const uint64_t kLegacyPlainTableMagicNumber;
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extern const uint64_t kBlockBasedTableMagicNumber;
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extern const uint64_t kLegacyBlockBasedTableMagicNumber;
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extern const uint64_t kCuckooTableMagicNumber;
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Status AdaptiveTableFactory::NewTableReader(
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const TableReaderOptions& table_reader_options,
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unique_ptr<RandomAccessFileReader>&& file, uint64_t file_size,
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unique_ptr<TableReader>* table,
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bool /*prefetch_index_and_filter_in_cache*/) const {
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Footer footer;
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auto s = ReadFooterFromFile(file.get(), nullptr /* prefetch_buffer */,
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file_size, &footer);
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if (!s.ok()) {
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return s;
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}
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if (footer.table_magic_number() == kPlainTableMagicNumber ||
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footer.table_magic_number() == kLegacyPlainTableMagicNumber) {
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return plain_table_factory_->NewTableReader(
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table_reader_options, std::move(file), file_size, table);
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} else if (footer.table_magic_number() == kBlockBasedTableMagicNumber ||
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footer.table_magic_number() == kLegacyBlockBasedTableMagicNumber) {
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return block_based_table_factory_->NewTableReader(
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table_reader_options, std::move(file), file_size, table);
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} else if (footer.table_magic_number() == kCuckooTableMagicNumber) {
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return cuckoo_table_factory_->NewTableReader(
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table_reader_options, std::move(file), file_size, table);
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} else {
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return Status::NotSupported("Unidentified table format");
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}
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}
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TableBuilder* AdaptiveTableFactory::NewTableBuilder(
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const TableBuilderOptions& table_builder_options, uint32_t column_family_id,
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WritableFileWriter* file) const {
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return table_factory_to_write_->NewTableBuilder(table_builder_options,
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column_family_id, file);
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}
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std::string AdaptiveTableFactory::GetPrintableTableOptions() const {
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std::string ret;
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ret.reserve(20000);
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const int kBufferSize = 200;
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char buffer[kBufferSize];
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if (table_factory_to_write_) {
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snprintf(buffer, kBufferSize, " write factory (%s) options:\n%s\n",
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(table_factory_to_write_->Name() ? table_factory_to_write_->Name()
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: ""),
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table_factory_to_write_->GetPrintableTableOptions().c_str());
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ret.append(buffer);
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}
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if (plain_table_factory_) {
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snprintf(buffer, kBufferSize, " %s options:\n%s\n",
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plain_table_factory_->Name() ? plain_table_factory_->Name() : "",
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plain_table_factory_->GetPrintableTableOptions().c_str());
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ret.append(buffer);
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}
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if (block_based_table_factory_) {
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snprintf(
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buffer, kBufferSize, " %s options:\n%s\n",
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(block_based_table_factory_->Name() ? block_based_table_factory_->Name()
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: ""),
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block_based_table_factory_->GetPrintableTableOptions().c_str());
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ret.append(buffer);
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}
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if (cuckoo_table_factory_) {
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snprintf(buffer, kBufferSize, " %s options:\n%s\n",
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cuckoo_table_factory_->Name() ? cuckoo_table_factory_->Name() : "",
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cuckoo_table_factory_->GetPrintableTableOptions().c_str());
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ret.append(buffer);
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}
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return ret;
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}
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extern TableFactory* NewAdaptiveTableFactory(
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std::shared_ptr<TableFactory> table_factory_to_write,
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std::shared_ptr<TableFactory> block_based_table_factory,
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std::shared_ptr<TableFactory> plain_table_factory,
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std::shared_ptr<TableFactory> cuckoo_table_factory) {
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return new AdaptiveTableFactory(table_factory_to_write,
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block_based_table_factory, plain_table_factory, cuckoo_table_factory);
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}
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} // namespace rocksdb
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#endif // ROCKSDB_LITE
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