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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
#pragma once
#ifndef ROCKSDB_LITE
#include <stdint.h>
#include <string>
#include <vector>
#include "rocksdb/options.h"
#include "rocksdb/status.h"
#include "rocksdb/table.h"
#include "rocksdb/table_properties.h"
#include "table/bloom_block.h"
#include "table/plain_table_index.h"
#include "table/plain_table_key_coding.h"
#include "table/table_builder.h"
namespace rocksdb {
class BlockBuilder;
class BlockHandle;
class WritableFile;
class TableBuilder;
class PlainTableBuilder: public TableBuilder {
public:
// Create a builder that will store the contents of the table it is
// building in *file. Does not close the file. It is up to the
// caller to close the file after calling Finish(). The output file
// will be part of level specified by 'level'. A value of -1 means
// that the caller does not know which level the output file will reside.
PlainTableBuilder(
const ImmutableCFOptions& ioptions, const MutableCFOptions& moptions,
const std::vector<std::unique_ptr<IntTblPropCollectorFactory>>*
int_tbl_prop_collector_factories,
uint32_t column_family_id, WritableFileWriter* file,
uint32_t user_key_size, EncodingType encoding_type,
size_t index_sparseness, uint32_t bloom_bits_per_key,
const std::string& column_family_name, uint32_t num_probes = 6,
size_t huge_page_tlb_size = 0, double hash_table_ratio = 0,
bool store_index_in_file = false);
// REQUIRES: Either Finish() or Abandon() has been called.
~PlainTableBuilder();
// Add key,value to the table being constructed.
// REQUIRES: key is after any previously added key according to comparator.
// REQUIRES: Finish(), Abandon() have not been called
void Add(const Slice& key, const Slice& value) override;
// Return non-ok iff some error has been detected.
Status status() const override;
// Finish building the table. Stops using the file passed to the
// constructor after this function returns.
// REQUIRES: Finish(), Abandon() have not been called
Status Finish() override;
// Indicate that the contents of this builder should be abandoned. Stops
// using the file passed to the constructor after this function returns.
// If the caller is not going to call Finish(), it must call Abandon()
// before destroying this builder.
// REQUIRES: Finish(), Abandon() have not been called
void Abandon() override;
// Number of calls to Add() so far.
uint64_t NumEntries() const override;
// Size of the file generated so far. If invoked after a successful
// Finish() call, returns the size of the final generated file.
uint64_t FileSize() const override;
TableProperties GetTableProperties() const override { return properties_; }
bool SaveIndexInFile() const { return store_index_in_file_; }
private:
Arena arena_;
const ImmutableCFOptions& ioptions_;
const MutableCFOptions& moptions_;
std::vector<std::unique_ptr<IntTblPropCollector>>
table_properties_collectors_;
BloomBlockBuilder bloom_block_;
std::unique_ptr<PlainTableIndexBuilder> index_builder_;
WritableFileWriter* file_;
uint64_t offset_ = 0;
uint32_t bloom_bits_per_key_;
size_t huge_page_tlb_size_;
Status status_;
TableProperties properties_;
PlainTableKeyEncoder encoder_;
bool store_index_in_file_;
std::vector<uint32_t> keys_or_prefixes_hashes_;
bool closed_ = false; // Either Finish() or Abandon() has been called.
const SliceTransform* prefix_extractor_;
Slice GetPrefix(const Slice& target) const {
assert(target.size() >= 8); // target is internal key
return GetPrefixFromUserKey(GetUserKey(target));
}
Slice GetPrefix(const ParsedInternalKey& target) const {
return GetPrefixFromUserKey(target.user_key);
}
Slice GetUserKey(const Slice& key) const {
return Slice(key.data(), key.size() - 8);
}
Slice GetPrefixFromUserKey(const Slice& user_key) const {
if (!IsTotalOrderMode()) {
return prefix_extractor_->Transform(user_key);
} else {
// Use empty slice as prefix if prefix_extractor is not set.
// In that case,
// it falls back to pure binary search and
// total iterator seek is supported.
return Slice();
}
}
bool IsTotalOrderMode() const { return (prefix_extractor_ == nullptr); }
// No copying allowed
PlainTableBuilder(const PlainTableBuilder&) = delete;
void operator=(const PlainTableBuilder&) = delete;
};
} // namespace rocksdb
#endif // ROCKSDB_LITE
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