Cleanup private and optinally public segments on a timer instead of after every save. Closes #254

core/ffmpeg/hlsFilesystemCleanup.go

@@ -10,54 +10,65 @@ import (
 	"github.com/owncast/owncast/config"
 )
 
-// Cleanup will delete old files off disk that are no longer being referenced
+// CleanupOldContent will delete old files from the private dir that are no longer being referenced
 // in the stream.
-func Cleanup(directoryPath string) {
+func CleanupOldContent(baseDirectory string) {
 	// Determine how many files we should keep on disk
 	maxNumber := config.Config.GetMaxNumberOfReferencedSegmentsInPlaylist()
 	buffer := 10
 
-	files, err := getSegmentFiles(directoryPath)
+	files, err := getAllFilesRecursive(baseDirectory)
 	if err != nil {
 		log.Fatal(err)
 	}
 
-	if len(files) < maxNumber+buffer {
-		return
-	}
+	// Delete old private HLS files on disk
+	for directory := range files {
+		files := files[directory]
+		if len(files) < maxNumber+buffer {
+			continue
+		}
 
-	// Delete old files on disk
-	filesToDelete := files[maxNumber+buffer:]
-	for _, file := range filesToDelete {
-		os.Remove(filepath.Join(directoryPath, file.Name()))
+		filesToDelete := files[maxNumber+buffer:]
+		log.Traceln("Deleting", len(filesToDelete), "old files from", baseDirectory, "for video variant", directory)
+
+		for _, file := range filesToDelete {
+			fileToDelete := filepath.Join(baseDirectory, directory, file.Name())
+			err := os.Remove(fileToDelete)
+			if err != nil {
+				log.Errorln(err)
+			}
+		}
 	}
 }
 
-func getSegmentFiles(dirname string) ([]os.FileInfo, error) {
-	f, err := os.Open(dirname)
-	if err != nil {
-		return nil, err
-	}
-	list, err := f.Readdir(-1) // -1 says to get a list of all files
-	f.Close()
-	if err != nil {
-		return nil, err
-	}
+func getAllFilesRecursive(baseDirectory string) (map[string][]os.FileInfo, error) {
+	var files = make(map[string][]os.FileInfo)
 
-	filteredList := make([]os.FileInfo, 0)
+	var directory string
+	filepath.Walk(baseDirectory, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			log.Fatalf(err.Error())
+			return err
+		}
 
-	// Filter out playlists because we don't want to clean them up
-	for _, file := range list {
-		if filepath.Ext(file.Name()) == ".m3u8" {
-			continue
+		if info.IsDir() {
+			directory = info.Name()
 		}
-		filteredList = append(filteredList, file)
-	}
 
-	// Sort by date so we can delete old files
-	sort.Slice(filteredList, func(i, j int) bool {
-		return filteredList[i].ModTime().UnixNano() > filteredList[j].ModTime().UnixNano()
+		if filepath.Ext(info.Name()) == ".ts" {
+			files[directory] = append(files[directory], info)
+		}
+
+		return nil
 	})
 
-	return filteredList, nil
+	// Sort by date so we can delete old files
+	for directory := range files {
+		sort.Slice(files[directory], func(i, j int) bool {
+			return files[directory][i].ModTime().UnixNano() > files[directory][j].ModTime().UnixNano()
+		})
+	}
+
+	return files, nil
 }

core/storageproviders/local.go

@@ -2,6 +2,7 @@ package storageproviders
 
 import (
 	"path/filepath"
+	"time"
 
 	log "github.com/sirupsen/logrus"
 
@@ -13,9 +14,22 @@ import (
 type LocalStorage struct {
 }
 
+// Cleanup old public HLS content every N min from the webroot.
+var _onlineCleanupTicker *time.Ticker
+
 // Setup configures this storage provider
 func (s *LocalStorage) Setup() error {
-	// no-op
+	// 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)
+	go func() {
+		for {
+			select {
+			case <-_onlineCleanupTicker.C:
+				ffmpeg.CleanupOldContent(config.PublicHLSStoragePath)
+			}
+		}
+	}()
 	return nil
 }
 
@@ -49,15 +63,7 @@ func (s *LocalStorage) Save(filePath string, retryCount int) (string, error) {
 		newPath = filepath.Join(config.WebRoot, filePath)
 	}
 
-	// Move video segments to the destination directory.
-	// Copy playlists to the destination directory so they can still be referenced in
-	// the private hls working directory.
-	if filepath.Ext(filePath) == ".m3u8" {
-		utils.Copy(filePath, newPath)
-	} else {
-		utils.Move(filePath, newPath)
-		ffmpeg.Cleanup(filepath.Dir(newPath))
-	}
+	utils.Copy(filePath, newPath)
 
 	return newPath, nil
 }

core/storageproviders/s3Storage.go

@@ -6,7 +6,6 @@ import (
 	"os"
 	"path/filepath"
 
-	"github.com/owncast/owncast/core/ffmpeg"
 	"github.com/owncast/owncast/core/playlist"
 	"github.com/owncast/owncast/utils"
 	log "github.com/sirupsen/logrus"
@@ -160,8 +159,6 @@ func (s *S3Storage) Save(filePath string, retryCount int) (string, error) {
 		}
 	}
 
-	ffmpeg.Cleanup(filepath.Dir(filePath))
-
 	return response.Location, nil
 }
 

core/streamState.go

@@ -16,7 +16,11 @@ import (
 	"github.com/grafov/m3u8"
 )
 
-var _cleanupTimer *time.Timer
+// After the stream goes offline this timer fires a full cleanup after N min.
+var _offlineCleanupTimer *time.Timer
+
+// While a stream takes place cleanup old HLS content every N min.
+var _onlineCleanupTicker *time.Ticker
 
 //SetStreamAsConnected sets the stream as connected
 func SetStreamAsConnected() {
@@ -25,6 +29,8 @@ func SetStreamAsConnected() {
 	_stats.LastDisconnectTime = utils.NullTime{time.Now(), false}
 
 	StopOfflineCleanupTimer()
+	startOnlineCleanupTimer()
+
 	if _yp != nil {
 		_yp.Start()
 	}
@@ -112,15 +118,16 @@ func SetStreamAsDisconnected() {
 	}
 
 	StartOfflineCleanupTimer()
+	stopOnlineCleanupTimer()
 }
 
 // StartOfflineCleanupTimer will fire a cleanup after n minutes being disconnected
 func StartOfflineCleanupTimer() {
-	_cleanupTimer = time.NewTimer(5 * time.Minute)
+	_offlineCleanupTimer = time.NewTimer(5 * time.Minute)
 	go func() {
 		for {
 			select {
-			case <-_cleanupTimer.C:
+			case <-_offlineCleanupTimer.C:
 				// Reset the session count since the session is over
 				_stats.SessionMaxViewerCount = 0
 				resetDirectories()
@@ -132,7 +139,25 @@ func StartOfflineCleanupTimer() {
 
 // StopOfflineCleanupTimer will stop the previous cleanup timer
 func StopOfflineCleanupTimer() {
-	if _cleanupTimer != nil {
-		_cleanupTimer.Stop()
+	if _offlineCleanupTimer != nil {
+		_offlineCleanupTimer.Stop()
+	}
+}
+
+func startOnlineCleanupTimer() {
+	_onlineCleanupTicker = time.NewTicker(1 * time.Minute)
+	go func() {
+		for {
+			select {
+			case <-_onlineCleanupTicker.C:
+				ffmpeg.CleanupOldContent(config.PrivateHLSStoragePath)
+			}
+		}
+	}()
+}
+
+func stopOnlineCleanupTimer() {
+	if _onlineCleanupTicker != nil {
+		_onlineCleanupTicker.Stop()
 	}
 }