//  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 <string>
#include <stdint.h>

#include "rocksdb/flush_block_policy.h"
#include "rocksdb/cache.h"
#include "table/block_based_table_builder.h"
#include "table/block_based_table_reader.h"
#include "port/port.h"

namespace rocksdb {

BlockBasedTableFactory::BlockBasedTableFactory(
    const BlockBasedTableOptions& table_options)
    : table_options_(table_options) {
  if (table_options_.flush_block_policy_factory == nullptr) {
    table_options_.flush_block_policy_factory.reset(
        new FlushBlockBySizePolicyFactory());
  }
  if (table_options_.no_block_cache) {
    table_options_.block_cache.reset();
  } else if (table_options_.block_cache == nullptr) {
    table_options_.block_cache = NewLRUCache(8 << 20);
  }
  if (table_options_.block_size_deviation < 0 ||
      table_options_.block_size_deviation > 100) {
    table_options_.block_size_deviation = 0;
  }
  if (table_options_.filter_policy) {
    auto* p = new InternalFilterPolicy(table_options_.filter_policy);
    table_options_.filter_policy.reset(p);
  }
}

Status BlockBasedTableFactory::NewTableReader(
    const Options& options, const EnvOptions& soptions,
    const InternalKeyComparator& internal_comparator,
    unique_ptr<RandomAccessFile>&& file, uint64_t file_size,
    unique_ptr<TableReader>* table_reader) const {
  return BlockBasedTable::Open(options, soptions, table_options_,
                               internal_comparator, std::move(file), file_size,
                               table_reader);
}

TableBuilder* BlockBasedTableFactory::NewTableBuilder(
    const Options& options, const InternalKeyComparator& internal_comparator,
    WritableFile* file, CompressionType compression_type) const {

  auto table_builder = new BlockBasedTableBuilder(
      options, table_options_, internal_comparator, file, compression_type);

  return table_builder;
}

TableFactory* NewBlockBasedTableFactory(
    const BlockBasedTableOptions& table_options) {
  return new BlockBasedTableFactory(table_options);
}

const std::string BlockBasedTablePropertyNames::kIndexType =
    "rocksdb.block.based.table.index.type";
const std::string kHashIndexPrefixesBlock = "rocksdb.hashindex.prefixes";
const std::string kHashIndexPrefixesMetadataBlock =
    "rocksdb.hashindex.metadata";

}  // namespace rocksdb