/
storageutil.go
77 lines (64 loc) · 1.57 KB
/
storageutil.go
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package main
import (
"errors"
"fmt"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/s3"
"github.com/aws/aws-sdk-go/service/s3/s3manager"
"os"
)
type StorageUtil struct {
Bucket string
Region string
svc *s3.S3
ssn *session.Session
}
func (this *StorageUtil) init() error {
config := &aws.Config{}
if this.Region != "" {
config.Region = &this.Region
}
this.ssn = session.New(config)
svc := s3.New(this.ssn)
this.svc = svc
if !this.isBucketExists(this.Bucket) {
return errors.New(fmt.Sprintf("bucket %s not exists", this.Bucket))
}
return nil
}
func (this *StorageUtil) isBucketExists(name string) bool {
input := &s3.HeadBucketInput{Bucket: &name}
_, err := this.svc.HeadBucket(input)
if err == nil {
return true
} else {
return false
}
}
func (this *StorageUtil) getFileInfo(fileName string) (*s3.HeadObjectOutput, error) {
input := &s3.HeadObjectInput{Bucket: &this.Bucket, Key: &fileName}
info, err := this.svc.HeadObject(input)
return info, err
}
func (this *StorageUtil) upload(fileName string, fileLocation string, fingerPrint string) (string, error) {
f, err := os.Open(fileLocation)
defer f.Close()
if err != nil {
return "", err
}
metadata := map[string]*string{}
metadata["fingerprint"] = &fingerPrint
uploader := s3manager.NewUploader(this.ssn)
result, err := uploader.Upload(&s3manager.UploadInput{
Bucket: &this.Bucket,
Key: &fileName,
Body: f,
Metadata: metadata,
})
if err != nil {
return "", err
} else {
return result.Location, nil
}
}