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
|
// 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).
#include "db/blob/blob_file_addition.h"
#include <ostream>
#include <sstream>
#include "logging/event_logger.h"
#include "rocksdb/slice.h"
#include "rocksdb/status.h"
#include "test_util/sync_point.h"
#include "util/coding.h"
namespace ROCKSDB_NAMESPACE {
// Tags for custom fields. Note that these get persisted in the manifest,
// so existing tags should not be modified.
enum BlobFileAddition::CustomFieldTags : uint32_t {
kEndMarker,
// Add forward compatible fields here
/////////////////////////////////////////////////////////////////////
kForwardIncompatibleMask = 1 << 6,
// Add forward incompatible fields here
};
void BlobFileAddition::EncodeTo(std::string* output) const {
PutVarint64(output, blob_file_number_);
PutVarint64(output, total_blob_count_);
PutVarint64(output, total_blob_bytes_);
PutLengthPrefixedSlice(output, checksum_method_);
PutLengthPrefixedSlice(output, checksum_value_);
// Encode any custom fields here. The format to use is a Varint32 tag (see
// CustomFieldTags above) followed by a length prefixed slice. Unknown custom
// fields will be ignored during decoding unless they're in the forward
// incompatible range.
TEST_SYNC_POINT_CALLBACK("BlobFileAddition::EncodeTo::CustomFields", output);
PutVarint32(output, kEndMarker);
}
Status BlobFileAddition::DecodeFrom(Slice* input) {
constexpr char class_name[] = "BlobFileAddition";
if (!GetVarint64(input, &blob_file_number_)) {
return Status::Corruption(class_name, "Error decoding blob file number");
}
if (!GetVarint64(input, &total_blob_count_)) {
return Status::Corruption(class_name, "Error decoding total blob count");
}
if (!GetVarint64(input, &total_blob_bytes_)) {
return Status::Corruption(class_name, "Error decoding total blob bytes");
}
Slice checksum_method;
if (!GetLengthPrefixedSlice(input, &checksum_method)) {
return Status::Corruption(class_name, "Error decoding checksum method");
}
checksum_method_ = checksum_method.ToString();
Slice checksum_value;
if (!GetLengthPrefixedSlice(input, &checksum_value)) {
return Status::Corruption(class_name, "Error decoding checksum value");
}
checksum_value_ = checksum_value.ToString();
while (true) {
uint32_t custom_field_tag = 0;
if (!GetVarint32(input, &custom_field_tag)) {
return Status::Corruption(class_name, "Error decoding custom field tag");
}
if (custom_field_tag == kEndMarker) {
break;
}
if (custom_field_tag & kForwardIncompatibleMask) {
return Status::Corruption(
class_name, "Forward incompatible custom field encountered");
}
Slice custom_field_value;
if (!GetLengthPrefixedSlice(input, &custom_field_value)) {
return Status::Corruption(class_name,
"Error decoding custom field value");
}
}
return Status::OK();
}
std::string BlobFileAddition::DebugString() const {
std::ostringstream oss;
oss << *this;
return oss.str();
}
std::string BlobFileAddition::DebugJSON() const {
JSONWriter jw;
jw << *this;
jw.EndObject();
return jw.Get();
}
bool operator==(const BlobFileAddition& lhs, const BlobFileAddition& rhs) {
return lhs.GetBlobFileNumber() == rhs.GetBlobFileNumber() &&
lhs.GetTotalBlobCount() == rhs.GetTotalBlobCount() &&
lhs.GetTotalBlobBytes() == rhs.GetTotalBlobBytes() &&
lhs.GetChecksumMethod() == rhs.GetChecksumMethod() &&
lhs.GetChecksumValue() == rhs.GetChecksumValue();
}
bool operator!=(const BlobFileAddition& lhs, const BlobFileAddition& rhs) {
return !(lhs == rhs);
}
std::ostream& operator<<(std::ostream& os,
const BlobFileAddition& blob_file_addition) {
os << "blob_file_number: " << blob_file_addition.GetBlobFileNumber()
<< " total_blob_count: " << blob_file_addition.GetTotalBlobCount()
<< " total_blob_bytes: " << blob_file_addition.GetTotalBlobBytes()
<< " checksum_method: " << blob_file_addition.GetChecksumMethod()
<< " checksum_value: "
<< Slice(blob_file_addition.GetChecksumValue()).ToString(/* hex */ true);
return os;
}
JSONWriter& operator<<(JSONWriter& jw,
const BlobFileAddition& blob_file_addition) {
jw << "BlobFileNumber" << blob_file_addition.GetBlobFileNumber()
<< "TotalBlobCount" << blob_file_addition.GetTotalBlobCount()
<< "TotalBlobBytes" << blob_file_addition.GetTotalBlobBytes()
<< "ChecksumMethod" << blob_file_addition.GetChecksumMethod()
<< "ChecksumValue"
<< Slice(blob_file_addition.GetChecksumValue()).ToString(/* hex */ true);
return jw;
}
} // namespace ROCKSDB_NAMESPACE
|
