forked from isgasho/bitcask
/
import.go
106 lines (88 loc) 路 1.99 KB
/
import.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
package main
import (
"bufio"
"encoding/base64"
"encoding/json"
"io"
"os"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
"github.com/spf13/viper"
"github.com/MurilloVaz/bitcask"
)
var importCmd = &cobra.Command{
Use: "import",
Aliases: []string{"restore", "read"},
Short: "Import a database",
Long: `This command allows you to import or restore a database from a
previous export/dump using the export command either creating a new database
or adding additional key/value pairs to an existing one.`,
Args: cobra.RangeArgs(0, 1),
Run: func(cmd *cobra.Command, args []string) {
var input string
path := viper.GetString("path")
if len(args) == 1 {
input = args[0]
} else {
input = "-"
}
os.Exit(_import(path, input))
},
}
func init() {
RootCmd.AddCommand(importCmd)
}
func _import(path, input string) int {
var (
err error
r io.ReadCloser
)
db, err := bitcask.Open(path)
if err != nil {
log.WithError(err).Error("error opening database")
return 1
}
defer db.Close()
if input == "-" {
r = os.Stdin
} else {
r, err = os.Open(input)
if err != nil {
log.WithError(err).
WithField("input", input).
Error("error opening input for reading")
return 1
}
}
var kv kvPair
scanner := bufio.NewScanner(r)
for scanner.Scan() {
if err := json.Unmarshal(scanner.Bytes(), &kv); err != nil {
log.WithError(err).
WithField("input", input).
Error("error reading input")
return 2
}
key, err := base64.StdEncoding.DecodeString(kv.Key)
if err != nil {
log.WithError(err).Error("error decoding key")
return 2
}
value, err := base64.StdEncoding.DecodeString(kv.Value)
if err != nil {
log.WithError(err).Error("error decoding value")
return 2
}
if err := db.Put(key, value); err != nil {
log.WithError(err).Error("error writing key/value")
return 2
}
}
if err := scanner.Err(); err != nil {
log.WithError(err).
WithField("input", input).
Error("error reading input")
return 2
}
return 0
}