forked from cloud-gov/cg-migrate-db
/
aws.go
73 lines (65 loc) · 1.8 KB
/
aws.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
package main
import (
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/credentials"
"log"
"fmt"
"os"
"github.com/aws/aws-sdk-go/service/s3/s3manager"
"github.com/aws/aws-sdk-go/service/s3"
)
var defaultS3Key = "db.sql"
func newAWSSession(s3Creds S3Creds) (*session.Session, error) {
region := s3Creds.Region
// At one point,
if region == "" {
region = "us-east-1"
fmt.Printf("Unable to find a region, assuming region %s because E/W deployment never specified the region\n", region)
}
return session.NewSessionWithOptions(session.Options{
Config: aws.Config{
Credentials: credentials.NewStaticCredentials(s3Creds.AccessKeyId, s3Creds.SecretAccessKey, ""),
Region: aws.String(region),
},
})
}
func downloadFile(s3Creds S3Creds) error {
sess, err := newAWSSession(s3Creds)
if err != nil {
return err
}
file, err := os.Create("download_file")
if err != nil {
return fmt.Errorf("Failed to create file. %s", err.Error())
}
defer file.Close()
downloader := s3manager.NewDownloader(sess)
numBytes, err := downloader.Download(file,
&s3.GetObjectInput{
Bucket: aws.String(s3Creds.Bucket),
Key: aws.String(defaultS3Key),
})
if err != nil {
return fmt.Errorf("Failed to download file. %s", err.Error())
}
fmt.Println("Downloaded file", file.Name(), numBytes, "bytes")
return nil
}
func uploadFile(s3Creds S3Creds, file *os.File) error {
sess, err := newAWSSession(s3Creds)
if err != nil {
return err
}
uploader := s3manager.NewUploader(sess)
result, err := uploader.Upload(&s3manager.UploadInput{
Body: file,
Bucket: aws.String(s3Creds.Bucket),
Key: aws.String(defaultS3Key),
})
if err != nil {
fmt.Errorf("Failed to upload. %s", err)
}
log.Println("Successfully uploaded to", result.Location)
return nil
}