Stub "Transcode Complete" callback (#35)

clients/callback_client.go

@@ -90,6 +90,33 @@ func (c CallbackClient) SendTranscodeStatusError(callbackURL, errorMsg string) e
 	return c.DoWithRetries(r)
 }
 
+// Separate method as this requires a much richer message than the other status callbacks
+func (c CallbackClient) SendTranscodeStatusCompleted(url string, iv InputVideo, ov []OutputVideo) error {
+	tsm := TranscodeStatusCompletedMessage{
+		TranscodeStatusMessage: TranscodeStatusMessage{
+			CompletionRatio: overallCompletionRatio(TranscodeStatusCompleted, 1),
+			Status:          TranscodeStatusCompleted.String(),
+			Timestamp:       config.Clock.GetTimestampUTC(),
+		},
+		Type:       "video", // Assume everything is a video for now
+		InputVideo: iv,
+		Outputs:    ov,
+	}
+
+	j, err := json.Marshal(tsm)
+	if err != nil {
+		return err
+	}
+
+	r, err := http.NewRequest(http.MethodPost, url, bytes.NewReader(j))
+	if err != nil {
+		return err
+	}
+
+	return c.DoWithRetries(r)
+
+}
+
 // Calculate the overall completion ratio based on the completion ratio of the current stage.
 // The weighting will need to be tweaked as we understand better the relative time spent in the
 // segmenting vs. transcoding stages.
@@ -134,14 +161,6 @@ const (
 	TranscodeStatusError
 )
 
-type TranscodeStatusMessage struct {
-	CompletionRatio float64 `json:"completion_ratio"` // No omitempty or we lose this for 0% completion case
-	Error           string  `json:"error,omitempty"`
-	Retriable       *bool   `json:"retriable,omitempty"` // Has to be a pointer or we can't differentiate omission from 'false'
-	Status          string  `json:"status,omitempty"`
-	Timestamp       int64   `json:"timestamp"`
-}
-
 func (ts TranscodeStatus) String() string {
 	switch ts {
 	case TranscodeStatusPreparing:
@@ -157,3 +176,66 @@ func (ts TranscodeStatus) String() string {
 	}
 	return "unknown"
 }
+
+// The various status messages we can send
+
+type TranscodeStatusMessage struct {
+	CompletionRatio float64 `json:"completion_ratio"` // No omitempty or we lose this for 0% completion case
+	Error           string  `json:"error,omitempty"`
+	Unretriable     bool    `json:"unretriable,omitempty"`
+	Status          string  `json:"status"`
+	Timestamp       int64   `json:"timestamp"`
+}
+
+type VideoTrack struct {
+	Width       int    `json:"width,omitempty"`
+	Height      int    `json:"height,omitempty"`
+	PixelFormat string `json:"pixel_format,omitempty"`
+	FPS         int    `json:"fps,omitempty"`
+}
+
+type AudioTrack struct {
+	Channels   int `json:"channels,omitempty"`
+	SampleRate int `json:"sample_rate,omitempty"`
+}
+
+type InputTrack struct {
+	Type         string  `json:"type"`
+	Codec        string  `json:"codec"`
+	Bitrate      int     `json:"bitrate"`
+	DurationSec  float64 `json:"duration"`
+	SizeBytes    int     `json:"size"`
+	StartTimeSec float64 `json:"start_time"`
+
+	// Fields only used if this is a Video Track
+	VideoTrack
+
+	// Fields only used if this is an Audio Track
+	AudioTrack
+}
+
+type InputVideo struct {
+	Format    string       `json:"format"`
+	Tracks    []InputTrack `json:"tracks"`
+	Duration  float64      `json:"duration"`
+	SizeBytes int          `json:"size"`
+}
+
+type OutputVideoFile struct {
+	Type      string `json:"type"`
+	SizeBytes int    `json:"size"`
+	Location  string `json:"location"`
+}
+
+type OutputVideo struct {
+	Type     string            `json:"type"`
+	Manifest string            `json:"manifest"`
+	Videos   []OutputVideoFile `json:"videos"`
+}
+
+type TranscodeStatusCompletedMessage struct {
+	TranscodeStatusMessage
+	Type       string        `json:"type"`
+	InputVideo InputVideo    `json:"video_spec"`
+	Outputs    []OutputVideo `json:"outputs"`
+}

handlers/handlers.go

@@ -207,5 +207,64 @@ func (d *MistCallbackHandlersCollection) Trigger() httprouter.Handle {
 
 		// TODO: add timeout for the stream upload
 		// TODO: start transcoding
+		stubTranscodingCallbacksForStudio(d.StreamCache[s].callbackUrl, callbackClient)
 	}
 }
+
+// This method is for Studio to have something to integrate with and to make sure we have all the callbacks
+// in place that we'll need
+func stubTranscodingCallbacksForStudio(callbackURL string, callbackClient clients.CallbackClient) {
+	time.Sleep(5 * time.Second)
+	callbackClient.SendTranscodeStatus(callbackURL, clients.TranscodeStatusTranscoding, 0.3)
+	time.Sleep(5 * time.Second)
+	callbackClient.SendTranscodeStatus(callbackURL, clients.TranscodeStatusTranscoding, 0.6)
+	time.Sleep(5 * time.Second)
+	callbackClient.SendTranscodeStatus(callbackURL, clients.TranscodeStatusTranscoding, 0.9)
+	time.Sleep(5 * time.Second)
+	callbackClient.SendTranscodeStatus(callbackURL, clients.TranscodeStatusTranscoding, 1)
+	time.Sleep(5 * time.Second)
+	callbackClient.SendTranscodeStatusCompleted(
+		callbackURL,
+		clients.InputVideo{
+			Format:   "mp4",
+			Duration: 1234.5678,
+			Tracks: []clients.InputTrack{
+				{
+					Type:        "video",
+					Codec:       "h264",
+					DurationSec: 1.6,
+					Bitrate:     358315,
+					VideoTrack: clients.VideoTrack{
+						FPS:         30,
+						Width:       1920,
+						Height:      1080,
+						PixelFormat: "yuv420p",
+					},
+				},
+				{
+					Type:        "audio",
+					Codec:       "aac",
+					Bitrate:     141341,
+					DurationSec: 1.599979,
+					AudioTrack: clients.AudioTrack{
+						Channels:   2,
+						SampleRate: 48000,
+					},
+				},
+			},
+		},
+		[]clients.OutputVideo{
+			{
+				Type:     "google-s3",
+				Manifest: "s3://livepeer-studio-uploads/videos/<video-id>/master.m3u8",
+				Videos: []clients.OutputVideoFile{
+					{
+						Type:      "mp4",
+						SizeBytes: 12345,
+						Location:  "s3://livepeer-studio-uploads/videos/<video-id>/video-480p.mp4",
+					},
+				},
+			},
+		},
+	)
+}