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
|
package filer
import (
"bytes"
"context"
"io"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/util"
"github.com/golang/protobuf/jsonpb"
"github.com/golang/protobuf/proto"
"github.com/viant/ptrie"
)
const (
DirectoryEtc = "/etc"
FilerConfName = "filer.conf"
)
type FilerConf struct {
rules ptrie.Trie
}
func NewFilerConf() (fc *FilerConf) {
fc = &FilerConf{
rules: ptrie.New(),
}
return fc
}
func (fc *FilerConf) loadFromFiler(filer *Filer) (err error) {
filerConfPath := util.NewFullPath(DirectoryEtc, FilerConfName)
entry, err := filer.FindEntry(context.Background(), filerConfPath)
if err != nil {
if err == filer_pb.ErrNotFound {
return nil
}
glog.Errorf("read filer conf entry %s: %v", filerConfPath, err)
return
}
return fc.loadFromChunks(filer, entry.Chunks)
}
func (fc *FilerConf) loadFromChunks(filer *Filer, chunks []*filer_pb.FileChunk) (err error) {
data, err := filer.readEntry(chunks)
if err != nil {
glog.Errorf("read filer conf content: %v", err)
return
}
return fc.LoadFromBytes(data)
}
func (fc *FilerConf) LoadFromBytes(data []byte) (err error) {
conf := &filer_pb.FilerConf{}
if err := jsonpb.Unmarshal(bytes.NewReader(data), conf); err != nil {
err = proto.UnmarshalText(string(data), conf)
if err != nil {
glog.Errorf("unable to parse filer conf: %v", err)
// this is not recoverable
return nil
}
return nil
}
return fc.doLoadConf(conf)
}
func (fc *FilerConf) doLoadConf(conf *filer_pb.FilerConf) (err error) {
for _, location := range conf.Locations {
err = fc.AddLocationConf(location)
if err != nil {
// this is not recoverable
return nil
}
}
return nil
}
func (fc *FilerConf) AddLocationConf(locConf *filer_pb.FilerConf_PathConf) (err error) {
err = fc.rules.Put([]byte(locConf.LocationPrefix), locConf)
if err != nil {
glog.Errorf("put location prefix: %v", err)
}
return
}
func (fc *FilerConf) DeleteLocationConf(locationPrefix string) {
rules := ptrie.New()
fc.rules.Walk(func(key []byte, value interface{}) bool {
if string(key) == locationPrefix {
return true
}
rules.Put(key, value)
return true
})
fc.rules = rules
return
}
func (fc *FilerConf) MatchStorageRule(path string) (pathConf *filer_pb.FilerConf_PathConf) {
pathConf = &filer_pb.FilerConf_PathConf{}
fc.rules.MatchPrefix([]byte(path), func(key []byte, value interface{}) bool {
t := value.(*filer_pb.FilerConf_PathConf)
mergePathConf(pathConf, t)
return true
})
return pathConf
}
// merge if values in b is not empty, merge them into a
func mergePathConf(a, b *filer_pb.FilerConf_PathConf) {
a.Collection = util.Nvl(b.Collection, a.Collection)
a.Replication = util.Nvl(b.Replication, a.Replication)
a.Ttl = util.Nvl(b.Ttl, a.Ttl)
if b.DiskType != filer_pb.FilerConf_PathConf_NONE {
a.DiskType = b.DiskType
}
a.Fsync = b.Fsync || a.Fsync
}
func (fc *FilerConf) ToProto() *filer_pb.FilerConf {
m := &filer_pb.FilerConf{}
fc.rules.Walk(func(key []byte, value interface{}) bool {
pathConf := value.(*filer_pb.FilerConf_PathConf)
m.Locations = append(m.Locations, pathConf)
return true
})
return m
}
func (fc *FilerConf) ToText(writer io.Writer) error {
m := jsonpb.Marshaler{
EmitDefaults: false,
Indent: " ",
}
return m.Marshal(writer, fc.ToProto())
}
|
