ceph/src/rocksdb/table/adaptive/adaptive_table_factory.cc

   1 // Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
   2 // Copyright (c) 2011 The LevelDB Authors. All rights reserved.
   3 // Use of this source code is governed by a BSD-style license that can be
   4 // found in the LICENSE file. See the AUTHORS file for names of contributors.
   5
   6 #ifndef ROCKSDB_LITE
   7 #include "table/adaptive/adaptive_table_factory.h"
   8
   9 #include "table/table_builder.h"
  10 #include "table/format.h"
  11 #include "port/port.h"
  12
  13 namespace ROCKSDB_NAMESPACE {
  14
  15 AdaptiveTableFactory::AdaptiveTableFactory(
  16     std::shared_ptr<TableFactory> table_factory_to_write,
  17     std::shared_ptr<TableFactory> block_based_table_factory,
  18     std::shared_ptr<TableFactory> plain_table_factory,
  19     std::shared_ptr<TableFactory> cuckoo_table_factory)
  20     : table_factory_to_write_(table_factory_to_write),
  21       block_based_table_factory_(block_based_table_factory),
  22       plain_table_factory_(plain_table_factory),
  23       cuckoo_table_factory_(cuckoo_table_factory) {
  24   if (!plain_table_factory_) {
  25     plain_table_factory_.reset(NewPlainTableFactory());
  26   }
  27   if (!block_based_table_factory_) {
  28     block_based_table_factory_.reset(NewBlockBasedTableFactory());
  29   }
  30   if (!cuckoo_table_factory_) {
  31     cuckoo_table_factory_.reset(NewCuckooTableFactory());
  32   }
  33   if (!table_factory_to_write_) {
  34     table_factory_to_write_ = block_based_table_factory_;
  35   }
  36 }
  37
  38 extern const uint64_t kPlainTableMagicNumber;
  39 extern const uint64_t kLegacyPlainTableMagicNumber;
  40 extern const uint64_t kBlockBasedTableMagicNumber;
  41 extern const uint64_t kLegacyBlockBasedTableMagicNumber;
  42 extern const uint64_t kCuckooTableMagicNumber;
  43
  44 Status AdaptiveTableFactory::NewTableReader(
  45     const TableReaderOptions& table_reader_options,
  46     std::unique_ptr<RandomAccessFileReader>&& file, uint64_t file_size,
  47     std::unique_ptr<TableReader>* table,
  48     bool /*prefetch_index_and_filter_in_cache*/) const {
  49   Footer footer;
  50   auto s = ReadFooterFromFile(file.get(), nullptr /* prefetch_buffer */,
  51                               file_size, &footer);
  52   if (!s.ok()) {
  53     return s;
  54   }
  55   if (footer.table_magic_number() == kPlainTableMagicNumber ||
  56       footer.table_magic_number() == kLegacyPlainTableMagicNumber) {
  57     return plain_table_factory_->NewTableReader(
  58         table_reader_options, std::move(file), file_size, table);
  59   } else if (footer.table_magic_number() == kBlockBasedTableMagicNumber ||
  60       footer.table_magic_number() == kLegacyBlockBasedTableMagicNumber) {
  61     return block_based_table_factory_->NewTableReader(
  62         table_reader_options, std::move(file), file_size, table);
  63   } else if (footer.table_magic_number() == kCuckooTableMagicNumber) {
  64     return cuckoo_table_factory_->NewTableReader(
  65         table_reader_options, std::move(file), file_size, table);
  66   } else {
  67     return Status::NotSupported("Unidentified table format");
  68   }
  69 }
  70
  71 TableBuilder* AdaptiveTableFactory::NewTableBuilder(
  72     const TableBuilderOptions& table_builder_options, uint32_t column_family_id,
  73     WritableFileWriter* file) const {
  74   return table_factory_to_write_->NewTableBuilder(table_builder_options,
  75                                                   column_family_id, file);
  76 }
  77
  78 std::string AdaptiveTableFactory::GetPrintableTableOptions() const {
  79   std::string ret;
  80   ret.reserve(20000);
  81   const int kBufferSize = 200;
  82   char buffer[kBufferSize];
  83
  84   if (table_factory_to_write_) {
  85     snprintf(buffer, kBufferSize, "  write factory (%s) options:\n%s\n",
  86              (table_factory_to_write_->Name() ? table_factory_to_write_->Name()
  87                                               : ""),
  88              table_factory_to_write_->GetPrintableTableOptions().c_str());
  89     ret.append(buffer);
  90   }
  91   if (plain_table_factory_) {
  92     snprintf(buffer, kBufferSize, "  %s options:\n%s\n",
  93              plain_table_factory_->Name() ? plain_table_factory_->Name() : "",
  94              plain_table_factory_->GetPrintableTableOptions().c_str());
  95     ret.append(buffer);
  96   }
  97   if (block_based_table_factory_) {
  98     snprintf(
  99         buffer, kBufferSize, "  %s options:\n%s\n",
 100         (block_based_table_factory_->Name() ? block_based_table_factory_->Name()
 101                                             : ""),
 102         block_based_table_factory_->GetPrintableTableOptions().c_str());
 103     ret.append(buffer);
 104   }
 105   if (cuckoo_table_factory_) {
 106     snprintf(buffer, kBufferSize, "  %s options:\n%s\n",
 107              cuckoo_table_factory_->Name() ? cuckoo_table_factory_->Name() : "",
 108              cuckoo_table_factory_->GetPrintableTableOptions().c_str());
 109     ret.append(buffer);
 110   }
 111   return ret;
 112 }
 113
 114 extern TableFactory* NewAdaptiveTableFactory(
 115     std::shared_ptr<TableFactory> table_factory_to_write,
 116     std::shared_ptr<TableFactory> block_based_table_factory,
 117     std::shared_ptr<TableFactory> plain_table_factory,
 118     std::shared_ptr<TableFactory> cuckoo_table_factory) {
 119   return new AdaptiveTableFactory(table_factory_to_write,
 120       block_based_table_factory, plain_table_factory, cuckoo_table_factory);
 121 }
 122
 123 }  // namespace ROCKSDB_NAMESPACE
 124 #endif  // ROCKSDB_LITE