add helper function for handling existing file in s3

packages/minio/minio.go

@@ -35,7 +35,7 @@ func extensionFromContentType(ct string) string {
 	return exts[0]
 }
 
-func getKey(hash string, contentType string) string {
+func GetKey(hash string, contentType string) string {
 	return hash + extensionFromContentType(contentType)
 }
 
@@ -78,15 +78,12 @@ func Upload(ctx context.Context, key string, body io.Reader, size int64, content
 	return err
 }
 
-func getDownloadUrl(ctx context.Context, key string) (*url.URL, error) {
+func GetDownloadUrl(ctx context.Context, key string) (*url.URL, error) {
 	u, err := minClient.PresignedGetObject(ctx, globals.FileStorageBucketName, key, globals.FileDownloadLinkTtl, nil)
 	return u, err
 }
 
 func DoesExist(ctx context.Context, key string) bool {
-	_, err := minClient.GetObject(ctx, globals.FileStorageBucketName, key, minio.GetObjectOptions{})
-	if err != nil {
-		return false
-	}
-	return true
+	_, err := minClient.StatObject(ctx, globals.FileStorageBucketName, key, minio.StatObjectOptions{})
+	return err == nil
 }