/
datastore.go
159 lines (148 loc) · 3.23 KB
/
datastore.go
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
package fsrepo
import (
"context"
"errors"
ds "github.com/ipfs/go-datastore"
"github.com/ipfs/go-datastore/mount"
"github.com/plexsysio/go-msuite/modules/config"
"github.com/plexsysio/go-msuite/utils"
// "github.com/ipfs/go-ds-badger2"
"path/filepath"
flatfs "github.com/ipfs/go-ds-flatfs"
leveldb "github.com/ipfs/go-ds-leveldb"
)
type MountInfo struct {
Path string
Prefix string
Usage uint64
}
type Datastore interface {
ds.Batching
Mounts() ([]MountInfo, error)
}
var DefaultMountInfo = map[string]interface{}{
"level": map[string]interface{}{
"path": "kv",
"prefix": "/",
},
"flatfs": map[string]interface{}{
"path": "blocks",
"prefix": "blocks",
"shardFunc": "/repo/flatfs/shard/v1/next-to-last/2",
"sync": true,
},
}
func openDatastoreFromCfg(root string, c config.Config) (mDS ds.Batching, retErr error) {
mntInfo := map[string]interface{}{}
if ok := c.Get("Mounts", &mntInfo); !ok {
mntInfo = DefaultMountInfo
}
mnts := []mount.Mount{}
mntInfos := map[string]mount.Mount{}
defer func() {
if retErr != nil {
for _, v := range mnts {
v.Datastore.Close()
}
}
}()
for k, v := range mntInfo {
dCfg, ok := v.(map[string]interface{})
if !ok {
retErr = errors.New("Sub DS config missing for datastore")
return
}
prefix, ok := dCfg["prefix"].(string)
if !ok {
retErr = errors.New("Prefix missing for datastore")
return
}
path, ok := dCfg["path"].(string)
if !ok {
path = root
} else {
path = filepath.Join(root, path)
err := utils.MkdirIfNotExists(path)
if err != nil {
retErr = err
return
}
}
var newDs ds.Batching
var err error
switch k {
case "level":
newDs, err = leveldb.NewDatastore(path, &leveldb.Options{})
// case "badger":
// newDs, err = badger.NewDatastore(path, &badger.DefaultOptions)
case "flatfs":
sFn, ok := dCfg["shardFunc"].(string)
if !ok {
sFn = "/repo/flatfs/shard/v1/next-to-last/2"
}
sn, ok := dCfg["sync"].(bool)
if !ok {
sn = true
}
sf, e := flatfs.ParseShardFunc(sFn)
if e != nil {
retErr = e
return
}
newDs, err = flatfs.CreateOrOpen(path, sf, sn)
default:
retErr = errors.New("Invalid datastore type")
return
}
if err != nil {
retErr = err
return
}
newMnt := mount.Mount{
Prefix: ds.NewKey(prefix),
Datastore: newDs,
}
mnts = append(mnts, newMnt)
mntInfos[path] = newMnt
}
mDS = mount.New(mnts)
return &mountedDS{
Batching: mDS,
mnts: mntInfos,
}, nil
}
type mountedDS struct {
ds.Batching
mnts map[string]mount.Mount
}
func (m *mountedDS) Mounts() ([]MountInfo, error) {
mntInfos := []MountInfo{}
for k, v := range m.mnts {
if pds, ok := v.Datastore.(ds.PersistentDatastore); ok {
usg, err := pds.DiskUsage(context.TODO())
if err != nil {
return nil, err
}
mntInfos = append(mntInfos, MountInfo{
Path: k,
Prefix: v.Prefix.String(),
Usage: usg,
})
}
if pds, ok := v.Datastore.(oldPersistentDs); ok {
usg, err := pds.DiskUsage()
if err != nil {
return nil, err
}
mntInfos = append(mntInfos, MountInfo{
Path: k,
Prefix: v.Prefix.String(),
Usage: usg,
})
}
}
return mntInfos, nil
}
type oldPersistentDs interface {
DiskUsage() (uint64, error)
}