Couple of refactors to commit operation

cli/data/commit.go

@@ -45,36 +45,29 @@ $ paddle data commit -b experimental source/path trained-model/version1
 		if !viper.IsSet("bucket") {
 			exitErrorf("Bucket not defined. Please define 'bucket' in your config file.")
 		}
-		commitPath(args[0], viper.GetString("bucket"), args[1], commitBranch)
+
+		destination := S3Path{
+			bucket: viper.GetString("bucket"),
+			path: fmt.Sprintf("%s/%s", args[1], commitBranch),
+		}
+
+		commitPath(args[0], destination)
 	},
 }
 
 func init() {
 	commitCmd.Flags().StringVarP(&commitBranch, "branch", "b", "master", "Branch to work on")
 }
 
-func commitPath(path string, bucket string, version string, branch string) {
+func commitPath(path string, destination S3Path) {
 	fd, err := os.Stat(path)
 	if err != nil {
-		exitErrorf("Path %v not found", path)
+		exitErrorf("Source path %v not found", path)
 	}
 	if !fd.Mode().IsDir() {
-		exitErrorf("Path %v must be a directory", path)
-	}
-
-	hash, err := common.DirHash(path)
-	if err != nil {
-		exitErrorf("Unable to hash input folder")
+		exitErrorf("Source path %v must be a directory", path)
 	}
 
-	t := time.Now().UTC()
-
-	datePath := fmt.Sprintf("%d/%02d/%02d/%02d%02d",
-		t.Year(), t.Month(), t.Day(),
-		t.Hour(), t.Minute())
-
-	destPath := fmt.Sprintf("%s/%s/%s_%s", version, branch, datePath, hash)
-
 	sess := session.Must(session.NewSessionWithOptions(session.Options{
 		SharedConfigState: session.SharedConfigEnable,
 	}))
@@ -89,22 +82,31 @@ func commitPath(path string, bucket string, version string, branch string) {
 		}
 	})
 
+	t := time.Now().UTC()
+	datePath := fmt.Sprintf("%d/%02d/%02d/%02d%02d",
+		t.Year(), t.Month(), t.Day(),
+		t.Hour(), t.Minute())
+
+	hash, err := common.DirHash(path)
+	if err != nil {
+		exitErrorf("Unable to hash input folder")
+	}
+
 	uploader := s3manager.NewUploader(sess)
+	folderKey := fmt.Sprintf("%s/%s_%s", destination.path, datePath, hash)
 
 	for _, file := range fileList {
-		key := destPath + "/" + strings.TrimPrefix(file, path+"/")
+		key := fmt.Sprintf("%s/%s", folderKey, strings.TrimPrefix(file, path + "/"))
 		fmt.Println(file + " -> " + key)
-		uploadFileToS3(uploader, bucket, key, file)
+		uploadFileToS3(uploader, destination.bucket, key, file)
 	}
 
 	// Update HEAD
-
-	headFile := fmt.Sprintf("%s/%s/HEAD", version, branch)
-
-	uploadDataToS3(sess, destPath, bucket, headFile)
+	headKey := fmt.Sprintf("%s/HEAD", destination.path)
+	uploadDataToS3(sess, destination.bucket, headKey, folderKey)
 }
 
-func uploadFileToS3(uploader *s3manager.Uploader, bucketName string, key string, filePath string) {
+func uploadFileToS3(uploader *s3manager.Uploader, bucket string, key string, filePath string) {
 	file, err := os.Open(filePath)
 	if err != nil {
 		fmt.Println("Failed to open file", file, err)
@@ -113,18 +115,18 @@ func uploadFileToS3(uploader *s3manager.Uploader, bucketName string, key string,
 	defer file.Close()
 
 	_, err = uploader.Upload(&s3manager.UploadInput{
-		Bucket: aws.String(bucketName),
+		Bucket: aws.String(bucket),
 		Key:    aws.String(key),
 		Body:   file,
 	})
 
 	if err != nil {
-		exitErrorf("Failed to upload data to %s/%s, %s", bucketName, key, err.Error())
+		exitErrorf("Failed to upload data to %s/%s, %s", bucket, key, err.Error())
 		return
 	}
 }
 
-func uploadDataToS3(sess *session.Session, data string, bucket string, key string) {
+func uploadDataToS3(sess *session.Session, bucket string, key string, data string) {
 	s3Svc := s3.New(sess)
 
 	_, err := s3Svc.PutObject(&s3.PutObjectInput{