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s3uploader.go
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/
s3uploader.go
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package imguploader
import (
"io/ioutil"
"net/http"
"net/url"
"path"
"github.com/grafana/grafana/pkg/log"
"github.com/grafana/grafana/pkg/util"
"github.com/kr/s3/s3util"
)
type S3Uploader struct {
bucket string
secretKey string
accessKey string
log log.Logger
}
func NewS3Uploader(bucket, accessKey, secretKey string) *S3Uploader {
return &S3Uploader{
bucket: bucket,
accessKey: accessKey,
secretKey: secretKey,
log: log.New("s3uploader"),
}
}
func (u *S3Uploader) Upload(imageDiskPath string) (string, error) {
s3util.DefaultConfig.AccessKey = u.accessKey
s3util.DefaultConfig.SecretKey = u.secretKey
header := make(http.Header)
header.Add("x-amz-acl", "public-read")
header.Add("Content-Type", "image/png")
var imageUrl *url.URL
var err error
if imageUrl, err = url.Parse(u.bucket); err != nil {
return "", err
}
// add image to url
imageUrl.Path = path.Join(imageUrl.Path, util.GetRandomString(20)+".png")
imageUrlString := imageUrl.String()
log.Debug("Uploading image to s3", "url", imageUrlString)
writer, err := s3util.Create(imageUrlString, header, nil)
if err != nil {
return "", err
}
defer writer.Close()
imgData, err := ioutil.ReadFile(imageDiskPath)
if err != nil {
return "", err
}
_, err = writer.Write(imgData)
if err != nil {
return "", err
}
return imageUrlString, nil
}