1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
// 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 "db/version_edit.h"
#include "rocksdb/options.h"
#include "rocksdb/status.h"
#include "rocksdb/table.h"
#include "rocksdb/table_properties.h"
#include "table/plain/plain_table_bloom.h"
#include "table/plain/plain_table_index.h"
#include "table/plain/plain_table_key_coding.h"
#include "table/table_builder.h"
namespace ROCKSDB_NAMESPACE {
class BlockBuilder;
class BlockHandle;
class WritableFile;
class TableBuilder;
// The builder class of PlainTable. For description of PlainTable format
// See comments of class PlainTableFactory, where instances of
// PlainTableReader are created.
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 ImmutableOptions& ioptions, const MutableCFOptions& moptions,
const IntTblPropCollectorFactories* int_tbl_prop_collector_factories,
uint32_t column_family_id, int level_at_creation,
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,
const std::string& db_id = "", const std::string& db_session_id = "",
uint64_t file_number = 0);
// No copying allowed
PlainTableBuilder(const PlainTableBuilder&) = delete;
void operator=(const PlainTableBuilder&) = delete;
// 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 { return status_; }
// Return non-ok iff some error happens during IO.
IOStatus io_status() const override { return io_status_; }
// 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_; }
// Get file checksum
std::string GetFileChecksum() const override;
// Get file checksum function name
const char* GetFileChecksumFuncName() const override;
void SetSeqnoTimeTableProperties(const std::string& string,
uint64_t uint_64) override;
private:
Arena arena_;
const ImmutableOptions& 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_;
IOStatus io_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(ExtractUserKey(target));
}
Slice GetPrefix(const ParsedInternalKey& target) const {
return GetPrefixFromUserKey(target.user_key);
}
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); }
};
} // namespace ROCKSDB_NAMESPACE
#endif // ROCKSDB_LITE
|
