Add metrics for audio duration

internal/service/transcribe.go

@@ -25,6 +25,7 @@ const (
 type TranscribeService struct {
 	jobRepo    contract.TranscriptJobRepository
 	fileRepo   contract.FileRepository
+	metaviewer contract.AudioMetaViewer
 	converter  contract.AudioFileConverter
 	recognizer contract.AudioRecognizer
 }
@@ -32,12 +33,14 @@ type TranscribeService struct {
 func NewTranscribeService(
 	jobRepo contract.TranscriptJobRepository,
 	fileRepo contract.FileRepository,
+	metaviewer contract.AudioMetaViewer,
 	converter contract.AudioFileConverter,
 	recognizer contract.AudioRecognizer,
 ) *TranscribeService {
 	return &TranscribeService{
 		jobRepo:    jobRepo,
 		fileRepo:   fileRepo,
+		metaviewer: metaviewer,
 		converter:  converter,
 		recognizer: recognizer,
 	}
@@ -74,6 +77,12 @@ func (s *TranscribeService) CreateTranscribeJob(file io.Reader, fileName string)
 		return nil, err
 	}
 
+	info, err := s.metaviewer.GetInfo(storageFilePath)
+	if err != nil {
+		return nil, err
+	}
+
+	metrics.InputFileDurationHistogram.WithLabelValues().Observe(float64(info.Seconds))
 	metrics.InputFileSizeHistogram.WithLabelValues(ext).Observe(float64(size))
 
 	// Создаем запись в таблице files