-
-
Notifications
You must be signed in to change notification settings - Fork 0
/
s3.go
130 lines (114 loc) · 3.36 KB
/
s3.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
package s3
import (
"bytes"
"io/ioutil"
"path"
"strconv"
"strings"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/s3"
"github.com/getfider/fider/app/models"
"github.com/getfider/fider/app/pkg/blob"
"github.com/getfider/fider/app/pkg/env"
"github.com/getfider/fider/app/pkg/errors"
)
var _ blob.Storage = (*Storage)(nil)
// Storage stores blobs on an S3 compatible service
type Storage struct {
bucket *string
tenant *models.Tenant
}
func isNotFound(err error) bool {
if awsErr, ok := err.(awserr.Error); ok {
return awsErr.Code() == s3.ErrCodeNoSuchKey
}
return false
}
//DefaultClient is an S3 Client
var DefaultClient *s3.S3
func init() {
s3EnvConfig := env.Config.BlobStorage.S3
if s3EnvConfig.EndpointURL != "" {
s3Config := &aws.Config{
Credentials: credentials.NewStaticCredentials(s3EnvConfig.AccessKeyID, s3EnvConfig.SecretAccessKey, ""),
Endpoint: aws.String(s3EnvConfig.EndpointURL),
Region: aws.String(s3EnvConfig.Region),
DisableSSL: aws.Bool(strings.HasSuffix(s3EnvConfig.EndpointURL, "http://")),
S3ForcePathStyle: aws.Bool(true),
}
awsSession := session.New(s3Config)
DefaultClient = s3.New(awsSession)
}
}
// NewStorage creates a S3 compatible service storage
func NewStorage(bucket string) *Storage {
return &Storage{
bucket: aws.String(bucket),
}
}
func (s *Storage) keyFullPathURL(key string) string {
if s.tenant != nil {
return path.Join("tenants", strconv.Itoa(s.tenant.ID), key)
}
return key
}
// SetCurrentTenant to current context
func (s *Storage) SetCurrentTenant(tenant *models.Tenant) {
s.tenant = tenant
}
// Get returns a blob with given key
func (s *Storage) Get(key string) (*blob.Blob, error) {
resp, err := DefaultClient.GetObject(&s3.GetObjectInput{
Bucket: s.bucket,
Key: aws.String(s.keyFullPathURL(key)),
})
if err != nil {
if isNotFound(err) {
return nil, blob.ErrNotFound
}
return nil, errors.Wrap(err, "failed to get blob '%s' from S3", key)
}
defer resp.Body.Close()
bytes, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, errors.Wrap(err, "failed to read blob body '%s' from S3", key)
}
return &blob.Blob{
Key: key,
Size: *resp.ContentLength,
ContentType: *resp.ContentType,
Object: bytes,
}, nil
}
// Delete a blob with given key
func (s *Storage) Delete(key string) error {
_, err := DefaultClient.DeleteObject(&s3.DeleteObjectInput{
Bucket: s.bucket,
Key: aws.String(s.keyFullPathURL(key)),
})
if err != nil && !isNotFound(err) {
return errors.Wrap(err, "failed to delete blob '%s' from S3", key)
}
return nil
}
// Put a blob with given key and content. Blobs with same key are replaced.
func (s *Storage) Put(key string, content []byte, contentType string) error {
if err := blob.ValidateKey(key); err != nil {
return errors.Wrap(err, "failed to validate blob key '%s'", key)
}
reader := bytes.NewReader(content)
_, err := DefaultClient.PutObject(&s3.PutObjectInput{
Bucket: s.bucket,
Key: aws.String(s.keyFullPathURL(key)),
ContentType: aws.String(contentType),
ACL: aws.String(s3.ObjectCannedACLPrivate),
Body: reader,
})
if err != nil {
return errors.Wrap(err, "failed to upload blob '%s' to S3", key)
}
return nil
}