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
202
203
204
205
206
|
package filer
import (
"bytes"
"fmt"
"os"
"sync"
"time"
"google.golang.org/protobuf/proto"
"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
)
// pbEntryPool reduces allocations in EncodeAttributesAndChunks and DecodeAttributesAndChunks
// which are called on every filer store operation
var pbEntryPool = sync.Pool{
New: func() interface{} {
return &filer_pb.Entry{
Attributes: &filer_pb.FuseAttributes{}, // Pre-allocate attributes
}
},
}
// resetPbEntry clears a protobuf Entry for reuse
func resetPbEntry(e *filer_pb.Entry) {
// Use struct assignment to clear all fields including protobuf internal fields
// (unknownFields, sizeCache) that field-by-field reset would miss
attrs := e.Attributes
*e = filer_pb.Entry{}
if attrs == nil {
attrs = &filer_pb.FuseAttributes{}
} else {
resetFuseAttributes(attrs)
}
e.Attributes = attrs
}
// resetFuseAttributes clears FuseAttributes for reuse
func resetFuseAttributes(a *filer_pb.FuseAttributes) {
// Use struct assignment to clear all fields including protobuf internal fields
*a = filer_pb.FuseAttributes{}
}
func (entry *Entry) EncodeAttributesAndChunks() ([]byte, error) {
message := pbEntryPool.Get().(*filer_pb.Entry)
defer func() {
resetPbEntry(message)
pbEntryPool.Put(message)
}()
entry.ToExistingProtoEntry(message)
data, err := proto.Marshal(message)
if err != nil {
return nil, err
}
// Copy the data to a new slice since proto.Marshal may return a slice
// that shares memory with the message (not guaranteed to be a copy)
return append([]byte(nil), data...), nil
}
func (entry *Entry) DecodeAttributesAndChunks(blob []byte) error {
message := pbEntryPool.Get().(*filer_pb.Entry)
defer func() {
resetPbEntry(message)
pbEntryPool.Put(message)
}()
if err := proto.Unmarshal(blob, message); err != nil {
return fmt.Errorf("decoding value blob for %s: %v", entry.FullPath, err)
}
FromPbEntryToExistingEntry(message, entry)
return nil
}
func EntryAttributeToPb(entry *Entry) *filer_pb.FuseAttributes {
return &filer_pb.FuseAttributes{
Crtime: entry.Attr.Crtime.Unix(),
Mtime: entry.Attr.Mtime.Unix(),
FileMode: uint32(entry.Attr.Mode),
Uid: entry.Uid,
Gid: entry.Gid,
Mime: entry.Mime,
TtlSec: entry.Attr.TtlSec,
UserName: entry.Attr.UserName,
GroupName: entry.Attr.GroupNames,
SymlinkTarget: entry.Attr.SymlinkTarget,
Md5: entry.Attr.Md5,
FileSize: entry.Attr.FileSize,
Rdev: entry.Attr.Rdev,
Inode: entry.Attr.Inode,
}
}
// EntryAttributeToExistingPb fills an existing FuseAttributes to avoid allocation.
// Safe to call with nil attr (will return early without populating).
func EntryAttributeToExistingPb(entry *Entry, attr *filer_pb.FuseAttributes) {
if attr == nil {
return
}
attr.Crtime = entry.Attr.Crtime.Unix()
attr.Mtime = entry.Attr.Mtime.Unix()
attr.FileMode = uint32(entry.Attr.Mode)
attr.Uid = entry.Uid
attr.Gid = entry.Gid
attr.Mime = entry.Mime
attr.TtlSec = entry.Attr.TtlSec
attr.UserName = entry.Attr.UserName
attr.GroupName = entry.Attr.GroupNames
attr.SymlinkTarget = entry.Attr.SymlinkTarget
attr.Md5 = entry.Attr.Md5
attr.FileSize = entry.Attr.FileSize
attr.Rdev = entry.Attr.Rdev
attr.Inode = entry.Attr.Inode
}
func PbToEntryAttribute(attr *filer_pb.FuseAttributes) Attr {
t := Attr{}
if attr == nil {
return t
}
t.Crtime = time.Unix(attr.Crtime, 0)
t.Mtime = time.Unix(attr.Mtime, 0)
t.Mode = os.FileMode(attr.FileMode)
t.Uid = attr.Uid
t.Gid = attr.Gid
t.Mime = attr.Mime
t.TtlSec = attr.TtlSec
t.UserName = attr.UserName
t.GroupNames = attr.GroupName
t.SymlinkTarget = attr.SymlinkTarget
t.Md5 = attr.Md5
t.FileSize = attr.FileSize
t.Rdev = attr.Rdev
t.Inode = attr.Inode
return t
}
func EqualEntry(a, b *Entry) bool {
if a == b {
return true
}
if a == nil && b != nil || a != nil && b == nil {
return false
}
if !proto.Equal(EntryAttributeToPb(a), EntryAttributeToPb(b)) {
return false
}
if len(a.Chunks) != len(b.Chunks) {
return false
}
if !eq(a.Extended, b.Extended) {
return false
}
if !bytes.Equal(a.Md5, b.Md5) {
return false
}
for i := 0; i < len(a.Chunks); i++ {
if !proto.Equal(a.Chunks[i], b.Chunks[i]) {
return false
}
}
if !bytes.Equal(a.HardLinkId, b.HardLinkId) {
return false
}
if a.HardLinkCounter != b.HardLinkCounter {
return false
}
if !bytes.Equal(a.Content, b.Content) {
return false
}
if !proto.Equal(a.Remote, b.Remote) {
return false
}
if a.Quota != b.Quota {
return false
}
return true
}
func eq(a, b map[string][]byte) bool {
if len(a) != len(b) {
return false
}
for k, v := range a {
if w, ok := b[k]; !ok || !bytes.Equal(v, w) {
return false
}
}
return true
}
|
