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
|
package redis2
import (
"context"
"fmt"
"time"
"github.com/go-redis/redis"
"github.com/chrislusf/seaweedfs/weed/filer"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/util"
)
const (
DIR_LIST_MARKER = "\x00"
)
type UniversalRedis2Store struct {
Client redis.UniversalClient
}
func (store *UniversalRedis2Store) BeginTransaction(ctx context.Context) (context.Context, error) {
return ctx, nil
}
func (store *UniversalRedis2Store) CommitTransaction(ctx context.Context) error {
return nil
}
func (store *UniversalRedis2Store) RollbackTransaction(ctx context.Context) error {
return nil
}
func (store *UniversalRedis2Store) InsertEntry(ctx context.Context, entry *filer.Entry) (err error) {
value, err := entry.EncodeAttributesAndChunks()
if err != nil {
return fmt.Errorf("encoding %s %+v: %v", entry.FullPath, entry.Attr, err)
}
if len(entry.Chunks) > 50 {
value = util.MaybeGzipData(value)
}
if err = store.Client.Set(string(entry.FullPath), value, time.Duration(entry.TtlSec)*time.Second).Err(); err != nil {
return fmt.Errorf("persisting %s : %v", entry.FullPath, err)
}
dir, name := entry.FullPath.DirAndName()
if name != "" {
if err = store.Client.ZAddNX(genDirectoryListKey(dir), redis.Z{Score: 0, Member: name}).Err(); err != nil {
return fmt.Errorf("persisting %s in parent dir: %v", entry.FullPath, err)
}
}
return nil
}
func (store *UniversalRedis2Store) UpdateEntry(ctx context.Context, entry *filer.Entry) (err error) {
return store.InsertEntry(ctx, entry)
}
func (store *UniversalRedis2Store) FindEntry(ctx context.Context, fullpath util.FullPath) (entry *filer.Entry, err error) {
data, err := store.Client.Get(string(fullpath)).Result()
if err == redis.Nil {
return nil, filer_pb.ErrNotFound
}
if err != nil {
return nil, fmt.Errorf("get %s : %v", fullpath, err)
}
entry = &filer.Entry{
FullPath: fullpath,
}
err = entry.DecodeAttributesAndChunks(util.MaybeDecompressData([]byte(data)))
if err != nil {
return entry, fmt.Errorf("decode %s : %v", entry.FullPath, err)
}
return entry, nil
}
func (store *UniversalRedis2Store) DeleteEntry(ctx context.Context, fullpath util.FullPath) (err error) {
_, err = store.Client.Del(genDirectoryListKey(string(fullpath))).Result()
if err != nil {
return fmt.Errorf("delete dir list %s : %v", fullpath, err)
}
_, err = store.Client.Del(string(fullpath)).Result()
if err != nil {
return fmt.Errorf("delete %s : %v", fullpath, err)
}
dir, name := fullpath.DirAndName()
if name != "" {
_, err = store.Client.ZRem(genDirectoryListKey(dir), name).Result()
if err != nil {
return fmt.Errorf("DeleteEntry %s in parent dir: %v", fullpath, err)
}
}
return nil
}
func (store *UniversalRedis2Store) DeleteFolderChildren(ctx context.Context, fullpath util.FullPath) (err error) {
members, err := store.Client.ZRange(genDirectoryListKey(string(fullpath)), 0, -1).Result()
if err != nil {
return fmt.Errorf("DeleteFolderChildren %s : %v", fullpath, err)
}
for _, fileName := range members {
path := util.NewFullPath(string(fullpath), fileName)
_, err = store.Client.Del(string(path)).Result()
if err != nil {
return fmt.Errorf("DeleteFolderChildren %s in parent dir: %v", fullpath, err)
}
}
return nil
}
func (store *UniversalRedis2Store) ListDirectoryPrefixedEntries(ctx context.Context, fullpath util.FullPath, startFileName string, inclusive bool, limit int, prefix string) (entries []*filer.Entry, err error) {
return nil, filer.ErrUnsupportedListDirectoryPrefixed
}
func (store *UniversalRedis2Store) ListDirectoryEntries(ctx context.Context, fullpath util.FullPath, startFileName string, inclusive bool,
limit int) (entries []*filer.Entry, err error) {
dirListKey := genDirectoryListKey(string(fullpath))
start := int64(0)
if startFileName != "" {
start, _ = store.Client.ZRank(dirListKey, startFileName).Result()
if !inclusive {
start++
}
}
members, err := store.Client.ZRange(dirListKey, start, start+int64(limit)-1).Result()
if err != nil {
return nil, fmt.Errorf("list %s : %v", fullpath, err)
}
// fetch entry meta
for _, fileName := range members {
path := util.NewFullPath(string(fullpath), fileName)
entry, err := store.FindEntry(ctx, path)
if err != nil {
glog.V(0).Infof("list %s : %v", path, err)
} else {
if entry.TtlSec > 0 {
if entry.Attr.Crtime.Add(time.Duration(entry.TtlSec) * time.Second).Before(time.Now()) {
store.Client.Del(string(path)).Result()
store.Client.ZRem(dirListKey, fileName).Result()
continue
}
}
entries = append(entries, entry)
}
}
return entries, err
}
func genDirectoryListKey(dir string) (dirList string) {
return dir + DIR_LIST_MARKER
}
func (store *UniversalRedis2Store) Shutdown() {
store.Client.Close()
}
|
