owncast/core/ffmpeg/fileWriterReceiverService.go
Gabe Kangas 6ea9affce0
HLS video handling/storage/state refactor (#151)
* WIP with new transcoder progress monitor

* A whole different WIP in progress monitoring via local PUTs

* Use an actual hls playlist parser to rewrite master playlist

* Cleanup

* Private vs public path for thumbnail generation

* Allow each storage provider to make decisions of how to store different types of files

* Simplify inbound file writes

* Revert

* Split out set stream as connected/disconnected state methods

* Update videojs

* Add comment about the hls handler

* Rework of the offline stream state.  For #85

* Delete old unreferenced video segment files from disk

* Cleanup all segments and revert to a completely offline state after 5min

* Stop thumbnail generation on stream stop. Copy logo to thumbnail on cleanup.

* Update transcoder test

* Add comment

* Return http 200 on success to transcoder. Tweak how files are written to disk

* Force pixel color format in transcoder

* Add debugging info for S3 transfers. Add default ACL.

* Fix cleanup timer

* Reset session stats when we cleanup the session.

* Put log file back

* Update test

* File should not be a part of this commit

* Add centralized shared performance timer for use anywhere

* Post-rebase cleanup

* Support returning nil from storage provider save

* Updates to reflect package changes + other updates in master

* Fix storage providers being overwritten

* Do not return pointer in save. Support cache headers with S3 providers

* Split out videojs + vhs and point to specific working versions of them

* Bump vjs and vhs versions

* Fix test

* Remove unused

* Update upload warning message

* No longer valid comment

* Pin videojs and vhs versions
2020-10-14 14:07:38 -07:00

104 lines
2.9 KiB
Go

package ffmpeg
import (
"bytes"
"io"
"os"
"path/filepath"
"strconv"
"strings"
"net/http"
"github.com/owncast/owncast/config"
"github.com/owncast/owncast/utils"
log "github.com/sirupsen/logrus"
)
// FileWriterReceiverServiceCallback are to be fired when transcoder responses are written to disk
type FileWriterReceiverServiceCallback interface {
SegmentWritten(localFilePath string)
VariantPlaylistWritten(localFilePath string)
MasterPlaylistWritten(localFilePath string)
}
// FileWriterReceiverService accepts transcoder responses via HTTP and fires the callbacks
type FileWriterReceiverService struct {
callbacks FileWriterReceiverServiceCallback
}
// SetupFileWriterReceiverService will start listening for transcoder responses
func (s *FileWriterReceiverService) SetupFileWriterReceiverService(callbacks FileWriterReceiverServiceCallback) {
s.callbacks = callbacks
httpServer := http.NewServeMux()
httpServer.HandleFunc("/", s.uploadHandler)
localListenerAddress := "127.0.0.1:" + strconv.Itoa(config.Config.GetPublicWebServerPort()+1)
go http.ListenAndServe(localListenerAddress, httpServer)
log.Traceln("Transcoder response listening on: " + localListenerAddress)
}
func (s *FileWriterReceiverService) uploadHandler(w http.ResponseWriter, r *http.Request) {
if r.Method != "PUT" {
http.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest)
return
}
path := r.URL.Path
writePath := filepath.Join(config.PrivateHLSStoragePath, path)
var buf bytes.Buffer
io.Copy(&buf, r.Body)
data := buf.Bytes()
f, err := os.Create(writePath)
if err != nil {
returnError(err, w, r)
return
}
defer f.Close()
_, err = f.Write(data)
if err != nil {
returnError(err, w, r)
return
}
s.fileWritten(writePath)
w.WriteHeader(http.StatusOK)
}
var _inWarningState = false
func (s *FileWriterReceiverService) fileWritten(path string) {
index := utils.GetIndexFromFilePath(path)
if utils.GetRelativePathFromAbsolutePath(path) == "hls/stream.m3u8" {
s.callbacks.MasterPlaylistWritten(path)
} else if strings.HasSuffix(path, ".ts") {
performanceMonitorKey := "segmentWritten-" + index
averagePerformance := utils.GetAveragePerformance(performanceMonitorKey)
utils.StartPerformanceMonitor(performanceMonitorKey)
s.callbacks.SegmentWritten(path)
if averagePerformance != 0 && averagePerformance > float64(float64(config.Config.GetVideoSegmentSecondsLength())) {
if !_inWarningState {
log.Warnln("slow encoding for variant", index, "if this continues you may see buffering or errors. troubleshoot this issue by visiting https://owncast.online/docs/troubleshooting/")
_inWarningState = true
}
} else {
_inWarningState = false
}
} else if strings.HasSuffix(path, ".m3u8") {
s.callbacks.VariantPlaylistWritten(path)
}
}
func returnError(err error, w http.ResponseWriter, r *http.Request) {
log.Errorln(err)
http.Error(w, http.StatusText(http.StatusInternalServerError)+": "+err.Error(), http.StatusInternalServerError)
}