blob: 4dba2a1a86d837e2676a35bd687562149ef7b3fa (
plain) (
blame)
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
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
#include "lenval_table_reader.h"
#include <yt/cpp/mapreduce/common/helpers.h>
#include <yt/cpp/mapreduce/interface/logging/yt_log.h>
#include <util/string/printf.h>
namespace NYT {
////////////////////////////////////////////////////////////////////////////////
const i32 CONTROL_ATTR_TABLE_INDEX = -1;
const i32 CONTROL_ATTR_KEY_SWITCH = -2;
const i32 CONTROL_ATTR_RANGE_INDEX = -3;
const i32 CONTROL_ATTR_ROW_INDEX = -4;
const i32 CONTROL_ATTR_END_OF_STREAM = -5;
const i32 CONTROL_ATTR_TABLET_INDEX = -6;
////////////////////////////////////////////////////////////////////////////////
TLenvalTableReader::TLenvalTableReader(::TIntrusivePtr<TRawTableReader> input)
: Input_(std::move(input))
{
TLenvalTableReader::Next();
}
TLenvalTableReader::~TLenvalTableReader()
{ }
void TLenvalTableReader::CheckValidity() const
{
if (!IsValid()) {
ythrow yexception() << "Iterator is not valid";
}
}
bool TLenvalTableReader::IsValid() const
{
return Valid_;
}
void TLenvalTableReader::Next()
{
if (!RowTaken_) {
SkipRow();
}
CheckValidity();
if (RowIndex_) {
++*RowIndex_;
}
while (true) {
try {
i32 value = 0;
if (!ReadInteger(&value, true)) {
return;
}
while (value < 0 && !IsEndOfStream_) {
switch (value) {
case CONTROL_ATTR_KEY_SWITCH:
if (!AtStart_) {
Valid_ = false;
return;
} else {
ReadInteger(&value);
}
break;
case CONTROL_ATTR_TABLE_INDEX: {
ui32 tmp = 0;
ReadInteger(&tmp);
TableIndex_ = tmp;
ReadInteger(&value);
break;
}
case CONTROL_ATTR_ROW_INDEX: {
ui64 tmp = 0;
ReadInteger(&tmp);
RowIndex_ = tmp;
ReadInteger(&value);
break;
}
case CONTROL_ATTR_RANGE_INDEX: {
ui32 tmp = 0;
ReadInteger(&tmp);
RangeIndex_ = tmp;
ReadInteger(&value);
break;
}
case CONTROL_ATTR_TABLET_INDEX: {
ui64 tmp = 0;
ReadInteger(&tmp);
TabletIndex_ = tmp;
ReadInteger(&value);
break;
}
case CONTROL_ATTR_END_OF_STREAM: {
IsEndOfStream_ = true;
break;
}
default:
ythrow yexception() <<
Sprintf("Invalid control integer %d in lenval stream", value);
}
}
Length_ = static_cast<ui32>(value);
RowTaken_ = false;
AtStart_ = false;
} catch (const std::exception& e) {
if (!PrepareRetry()) {
throw;
}
continue;
}
break;
}
}
bool TLenvalTableReader::Retry()
{
if (PrepareRetry()) {
RowTaken_ = true;
Next();
return true;
}
return false;
}
void TLenvalTableReader::NextKey()
{
while (Valid_) {
Next();
}
if (Finished_) {
return;
}
Valid_ = true;
if (RowIndex_) {
--*RowIndex_;
}
RowTaken_ = true;
}
ui32 TLenvalTableReader::GetTableIndex() const
{
CheckValidity();
return TableIndex_;
}
ui32 TLenvalTableReader::GetRangeIndex() const
{
CheckValidity();
return RangeIndex_.GetOrElse(0) + RangeIndexShift_;
}
ui64 TLenvalTableReader::GetRowIndex() const
{
CheckValidity();
return RowIndex_.GetOrElse(0UL);
}
TMaybe<size_t> TLenvalTableReader::GetReadByteCount() const
{
return Input_.GetReadByteCount();
}
bool TLenvalTableReader::IsEndOfStream() const
{
return IsEndOfStream_;
}
bool TLenvalTableReader::IsRawReaderExhausted() const
{
return Finished_;
}
bool TLenvalTableReader::PrepareRetry()
{
if (Input_.Retry(RangeIndex_, RowIndex_)) {
if (RangeIndex_) {
RangeIndexShift_ += *RangeIndex_;
}
RowIndex_.Clear();
RangeIndex_.Clear();
return true;
}
return false;
}
////////////////////////////////////////////////////////////////////////////////
} // namespace NYT
|
