1 files changed, 124 insertions, 0 deletions
diff --git a/src/rocksdb/table/adaptive/adaptive_table_factory.cc b/src/rocksdb/table/adaptive/adaptive_table_factory.cc
new file mode 100644
index 000000000..fa94e7bcd
--- /dev/null
+++ b/src/rocksdb/table/adaptive/adaptive_table_factory.cc
@@ -0,0 +1,124 @@
+// Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+// 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.
+
+#ifndef ROCKSDB_LITE
+#include "table/adaptive/adaptive_table_factory.h"
+
+#include "table/table_builder.h"
+#include "table/format.h"
+#include "port/port.h"
+
+namespace ROCKSDB_NAMESPACE {
+
+AdaptiveTableFactory::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)
+    : table_factory_to_write_(table_factory_to_write),
+      block_based_table_factory_(block_based_table_factory),
+      plain_table_factory_(plain_table_factory),
+      cuckoo_table_factory_(cuckoo_table_factory) {
+  if (!plain_table_factory_) {
+    plain_table_factory_.reset(NewPlainTableFactory());
+  }
+  if (!block_based_table_factory_) {
+    block_based_table_factory_.reset(NewBlockBasedTableFactory());
+  }
+  if (!cuckoo_table_factory_) {
+    cuckoo_table_factory_.reset(NewCuckooTableFactory());
+  }
+  if (!table_factory_to_write_) {
+    table_factory_to_write_ = block_based_table_factory_;
+  }
+}
+
+extern const uint64_t kPlainTableMagicNumber;
+extern const uint64_t kLegacyPlainTableMagicNumber;
+extern const uint64_t kBlockBasedTableMagicNumber;
+extern const uint64_t kLegacyBlockBasedTableMagicNumber;
+extern const uint64_t kCuckooTableMagicNumber;
+
+Status AdaptiveTableFactory::NewTableReader(
+    const TableReaderOptions& table_reader_options,
+    std::unique_ptr<RandomAccessFileReader>&& file, uint64_t file_size,
+    std::unique_ptr<TableReader>* table,
+    bool /*prefetch_index_and_filter_in_cache*/) const {
+  Footer footer;
+  auto s = ReadFooterFromFile(file.get(), nullptr /* prefetch_buffer */,
+                              file_size, &footer);
+  if (!s.ok()) {
+    return s;
+  }
+  if (footer.table_magic_number() == kPlainTableMagicNumber ||
+      footer.table_magic_number() == kLegacyPlainTableMagicNumber) {
+    return plain_table_factory_->NewTableReader(
+        table_reader_options, std::move(file), file_size, table);
+  } else if (footer.table_magic_number() == kBlockBasedTableMagicNumber ||
+      footer.table_magic_number() == kLegacyBlockBasedTableMagicNumber) {
+    return block_based_table_factory_->NewTableReader(
+        table_reader_options, std::move(file), file_size, table);
+  } else if (footer.table_magic_number() == kCuckooTableMagicNumber) {
+    return cuckoo_table_factory_->NewTableReader(
+        table_reader_options, std::move(file), file_size, table);
+  } else {
+    return Status::NotSupported("Unidentified table format");
+  }
+}
+
+TableBuilder* AdaptiveTableFactory::NewTableBuilder(
+    const TableBuilderOptions& table_builder_options, uint32_t column_family_id,
+    WritableFileWriter* file) const {
+  return table_factory_to_write_->NewTableBuilder(table_builder_options,
+                                                  column_family_id, file);
+}
+
+std::string AdaptiveTableFactory::GetPrintableTableOptions() const {
+  std::string ret;
+  ret.reserve(20000);
+  const int kBufferSize = 200;
+  char buffer[kBufferSize];
+
+  if (table_factory_to_write_) {
+    snprintf(buffer, kBufferSize, "  write factory (%s) options:\n%s\n",
+             (table_factory_to_write_->Name() ? table_factory_to_write_->Name()
+                                              : ""),
+             table_factory_to_write_->GetPrintableTableOptions().c_str());
+    ret.append(buffer);
+  }
+  if (plain_table_factory_) {
+    snprintf(buffer, kBufferSize, "  %s options:\n%s\n",
+             plain_table_factory_->Name() ? plain_table_factory_->Name() : "",
+             plain_table_factory_->GetPrintableTableOptions().c_str());
+    ret.append(buffer);
+  }
+  if (block_based_table_factory_) {
+    snprintf(
+        buffer, kBufferSize, "  %s options:\n%s\n",
+        (block_based_table_factory_->Name() ? block_based_table_factory_->Name()
+                                            : ""),
+        block_based_table_factory_->GetPrintableTableOptions().c_str());
+    ret.append(buffer);
+  }
+  if (cuckoo_table_factory_) {
+    snprintf(buffer, kBufferSize, "  %s options:\n%s\n",
+             cuckoo_table_factory_->Name() ? cuckoo_table_factory_->Name() : "",
+             cuckoo_table_factory_->GetPrintableTableOptions().c_str());
+    ret.append(buffer);
+  }
+  return ret;
+}
+
+extern TableFactory* NewAdaptiveTableFactory(
+    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) {
+  return new AdaptiveTableFactory(table_factory_to_write,
+      block_based_table_factory, plain_table_factory, cuckoo_table_factory);
+}
+
+}  // namespace ROCKSDB_NAMESPACE
+#endif  // ROCKSDB_LITE