-
Notifications
You must be signed in to change notification settings - Fork 448
/
generic_meta_interactor.go
83 lines (71 loc) · 2.46 KB
/
generic_meta_interactor.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
package mysql
import (
"github.com/pkg/errors"
"github.com/wal-g/wal-g/internal"
"github.com/wal-g/wal-g/pkg/storages/storage"
)
type GenericMetaInteractor struct {
GenericMetaFetcher
GenericMetaSetter
}
func NewGenericMetaInteractor() GenericMetaInteractor {
return GenericMetaInteractor{
GenericMetaFetcher: NewGenericMetaFetcher(),
GenericMetaSetter: NewGenericMetaSetter(),
}
}
type GenericMetaFetcher struct{}
func NewGenericMetaFetcher() GenericMetaFetcher {
return GenericMetaFetcher{}
}
func (mf GenericMetaFetcher) Fetch(backupName string, backupFolder storage.Folder) (internal.GenericMetadata, error) {
var backup = internal.NewBackup(backupFolder, backupName)
var sentinel StreamSentinelDto
err := backup.FetchSentinel(&sentinel)
if err != nil {
return internal.GenericMetadata{}, err
}
return internal.GenericMetadata{
BackupName: backupName,
UncompressedSize: sentinel.UncompressedSize,
CompressedSize: sentinel.CompressedSize,
Hostname: sentinel.Hostname,
StartTime: sentinel.StartLocalTime,
FinishTime: sentinel.StopLocalTime,
IsPermanent: sentinel.IsPermanent,
IncrementDetails: &internal.NopIncrementDetailsFetcher{},
UserData: sentinel.UserData,
}, nil
}
type GenericMetaSetter struct{}
func NewGenericMetaSetter() GenericMetaSetter {
return GenericMetaSetter{}
}
func (ms GenericMetaSetter) SetUserData(backupName string, backupFolder storage.Folder, userData interface{}) error {
modifier := func(dto StreamSentinelDto) StreamSentinelDto {
dto.UserData = userData
return dto
}
return modifyBackupSentinel(backupName, backupFolder, modifier)
}
func (ms GenericMetaSetter) SetIsPermanent(backupName string, backupFolder storage.Folder, isPermanent bool) error {
modifier := func(dto StreamSentinelDto) StreamSentinelDto {
dto.IsPermanent = isPermanent
return dto
}
return modifyBackupSentinel(backupName, backupFolder, modifier)
}
func modifyBackupSentinel(backupName string, backupFolder storage.Folder, modifier func(StreamSentinelDto) StreamSentinelDto) error {
backup := internal.NewBackup(backupFolder, backupName)
var sentinel StreamSentinelDto
err := backup.FetchSentinel(&sentinel)
if err != nil {
return errors.Wrap(err, "failed to fetch the existing backup metadata for modifying")
}
sentinel = modifier(sentinel)
err = backup.UploadSentinel(sentinel)
if err != nil {
return errors.Wrap(err, "failed to upload the modified metadata to the storage")
}
return nil
}