remove global variables from core/storageproviders (#1444)

core/storage.go

@@ -9,9 +9,9 @@ func setupStorage() error {
 	s3Config := data.GetS3Config()
 
 	if s3Config.Enabled {
-		_storage = &storageproviders.S3Storage{}
+		_storage = storageproviders.NewS3Storage()
 	} else {
-		_storage = &storageproviders.LocalStorage{}
+		_storage = storageproviders.NewLocalStorage()
 	}
 
 	if err := _storage.Setup(); err != nil {

core/storageproviders/local.go

@@ -11,18 +11,22 @@ import (
 
 // LocalStorage represents an instance of the local storage provider for HLS video.
 type LocalStorage struct {
+	// Cleanup old public HLS content every N min from the webroot.
+	onlineCleanupTicker *time.Ticker
 }
 
-// Cleanup old public HLS content every N min from the webroot.
+// NewLocalStorage returns a new LocalStorage instance.
-var _onlineCleanupTicker *time.Ticker
+func NewLocalStorage() *LocalStorage {
+	return &LocalStorage{}
+}
 
 // Setup configures this storage provider.
 func (s *LocalStorage) Setup() error {
 	// NOTE: This cleanup timer will have to be disabled to support recordings in the future
 	// as all HLS segments have to be publicly available on disk to keep a recording of them.
-	_onlineCleanupTicker = time.NewTicker(1 * time.Minute)
+	s.onlineCleanupTicker = time.NewTicker(1 * time.Minute)
 	go func() {
-		for range _onlineCleanupTicker.C {
+		for range s.onlineCleanupTicker.C {
 			transcoder.CleanupOldContent(config.HLSStoragePath)
 		}
 	}()

core/storageproviders/s3Storage.go

@@ -22,10 +22,6 @@ import (
 	"github.com/grafov/m3u8"
 )
 
-// If we try to upload a playlist but it is not yet on disk
-// then keep a reference to it here.
-var _queuedPlaylistUpdates = make(map[string]string)
-
 // S3Storage is the s3 implementation of a storage provider.
 type S3Storage struct {
 	sess *session.Session
@@ -38,9 +34,20 @@ type S3Storage struct {
 	s3AccessKey       string
 	s3Secret          string
 	s3ACL             string
+
+	// If we try to upload a playlist but it is not yet on disk
+	// then keep a reference to it here.
+	queuedPlaylistUpdates map[string]string
+
+	uploader *s3manager.Uploader
 }
 
-var _uploader *s3manager.Uploader
+// NewS3Storage returns a new S3Storage instance.
+func NewS3Storage() *S3Storage {
+	return &S3Storage{
+		queuedPlaylistUpdates: make(map[string]string),
+	}
+}
 
 // Setup sets up the s3 storage for saving the video to s3.
 func (s *S3Storage) Setup() error {
@@ -63,7 +70,7 @@ func (s *S3Storage) Setup() error {
 
 	s.sess = s.connectAWS()
 
-	_uploader = s3manager.NewUploader(s.sess)
+	s.uploader = s3manager.NewUploader(s.sess)
 
 	return nil
 }
@@ -93,7 +100,7 @@ func (s *S3Storage) SegmentWritten(localFilePath string) {
 	// them are in sync.
 	playlistPath := filepath.Join(filepath.Dir(localFilePath), "stream.m3u8")
 	if _, err := s.Save(playlistPath, 0); err != nil {
-		_queuedPlaylistUpdates[playlistPath] = playlistPath
+		s.queuedPlaylistUpdates[playlistPath] = playlistPath
 		if pErr, ok := err.(*os.PathError); ok {
 			log.Debugln(pErr.Path, "does not yet exist locally when trying to upload to S3 storage.")
 			return
@@ -106,12 +113,12 @@ func (s *S3Storage) VariantPlaylistWritten(localFilePath string) {
 	// We are uploading the variant playlist after uploading the segment
 	// to make sure we're not referring to files in a playlist that don't
 	// yet exist.  See SegmentWritten.
-	if _, ok := _queuedPlaylistUpdates[localFilePath]; ok {
+	if _, ok := s.queuedPlaylistUpdates[localFilePath]; ok {
 		if _, err := s.Save(localFilePath, 0); err != nil {
 			log.Errorln(err)
-			_queuedPlaylistUpdates[localFilePath] = localFilePath
+			s.queuedPlaylistUpdates[localFilePath] = localFilePath
 		}
-		delete(_queuedPlaylistUpdates, localFilePath)
+		delete(s.queuedPlaylistUpdates, localFilePath)
 	}
 }
 
@@ -152,7 +159,7 @@ func (s *S3Storage) Save(filePath string, retryCount int) (string, error) {
 		uploadInput.ACL = aws.String("public-read")
 	}
 
-	response, err := _uploader.Upload(uploadInput)
+	response, err := s.uploader.Upload(uploadInput)
 
 	if err != nil {
 		log.Traceln("error uploading:", filePath, err.Error())