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
|
package s3_backend
import (
"fmt"
"os"
"strings"
"time"
"github.com/aws/aws-sdk-go/service/s3"
"github.com/aws/aws-sdk-go/service/s3/s3iface"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/storage/backend"
"github.com/chrislusf/seaweedfs/weed/storage/needle"
"github.com/chrislusf/seaweedfs/weed/util"
)
var (
_ backend.DataStorageBackend = &S3Backend{}
)
func init() {
backend.StorageBackends = append(backend.StorageBackends, &S3Backend{})
}
type S3Backend struct {
conn s3iface.S3API
region string
bucket string
vid needle.VolumeId
key string
}
func (s3backend S3Backend) ReadAt(p []byte, off int64) (n int, err error) {
bytesRange := fmt.Sprintf("bytes=%d-%d", off, off+int64(len(p))-1)
getObjectOutput, getObjectErr := s3backend.conn.GetObject(&s3.GetObjectInput{
Bucket: &s3backend.bucket,
Key: &s3backend.key,
Range: &bytesRange,
})
if getObjectErr != nil {
return 0, fmt.Errorf("bucket %s GetObject %s: %v", s3backend.bucket, s3backend.key, getObjectErr)
}
defer getObjectOutput.Body.Close()
return getObjectOutput.Body.Read(p)
}
func (s3backend S3Backend) WriteAt(p []byte, off int64) (n int, err error) {
panic("implement me")
}
func (s3backend S3Backend) Truncate(off int64) error {
panic("implement me")
}
func (s3backend S3Backend) Close() error {
return nil
}
func (s3backend S3Backend) GetStat() (datSize int64, modTime time.Time, err error) {
headObjectOutput, headObjectErr := s3backend.conn.HeadObject(&s3.HeadObjectInput{
Bucket: &s3backend.bucket,
Key: &s3backend.key,
})
if headObjectErr != nil {
return 0, time.Now(), fmt.Errorf("bucket %s HeadObject %s: %v", s3backend.bucket, s3backend.key, headObjectErr)
}
datSize = int64(*headObjectOutput.ContentLength)
modTime = *headObjectOutput.LastModified
return
}
func (s3backend S3Backend) String() string {
return fmt.Sprintf("%s/%s", s3backend.bucket, s3backend.key)
}
func (s3backend *S3Backend) GetName() string {
return "s3"
}
func (s3backend S3Backend) Instantiate(src *os.File) error {
panic("implement me")
}
func (s3backend *S3Backend) Initialize(configuration util.Configuration, prefix string, vid needle.VolumeId) error {
glog.V(0).Infof("storage.backend.s3.region: %v", configuration.GetString("region"))
glog.V(0).Infof("storage.backend.s3.bucket: %v", configuration.GetString("bucket"))
glog.V(0).Infof("storage.backend.s3.directory: %v", configuration.GetString("directory"))
return s3backend.initialize(
configuration.GetString("aws_access_key_id"),
configuration.GetString("aws_secret_access_key"),
configuration.GetString("region"),
configuration.GetString("bucket"),
prefix,
vid,
)
}
func (s3backend *S3Backend) initialize(awsAccessKeyId, awsSecretAccessKey, region, bucket string,
prefix string, vid needle.VolumeId) (err error) {
s3backend.region = region
s3backend.bucket = bucket
s3backend.conn, err = createSession(awsAccessKeyId, awsSecretAccessKey, region)
s3backend.vid = vid
s3backend.key = fmt.Sprintf("%s_%d.dat", prefix, vid)
if strings.HasPrefix(s3backend.key, "/") {
s3backend.key = s3backend.key[1:]
}
return err
}
|
