func generateThumbnails(file multipart.File, userId, pathPrefix string, bucket *s3.Bucket) error {
file.Seek(0, 0)
img, _, err := image.Decode(file)
if err != nil {
log.Println("Error decoding image", err)
return err
}
var buf bytes.Buffer
for _, i := range THUMBNAIL_SIZES {
resized := resize.Resize(uint(i), 0, img, resize.Lanczos3)
err = jpeg.Encode(&buf, resized, nil)
if err != nil {
return err
}
path := fmt.Sprintf("%s/%d.jpg", pathPrefix, i)
err = bucket.Put(path, buf.Bytes(), "image/jpeg", s3.PublicRead)
if err != nil {
return err
}
buf.Reset()
}
return err
}
func upload(directory string, f os.FileInfo, bucket *s3.Bucket, permission s3.ACL) {
log.Println("uploading " + f.Name())
data, err := ioutil.ReadFile(path.Join(directory, f.Name()))
if err != nil {
panic(err.Error())
}
err = bucket.Put(f.Name(), data, "", permission)
if err != nil {
panic(err.Error())
}
log.Println("finished uploading " + f.Name())
}
func Put(bucket *s3.Bucket, path string, file string) {
contType := "binary/octet-stream"
Perms := s3.ACL("private")
data, err := ioutil.ReadFile(file)
if err != nil {
panic(err.Error())
}
err = bucket.Put(path, data, contType, Perms)
if err != nil {
panic(err.Error())
}
}