def perform_update(self, serializer):
instance = self.get_object()
super().perform_update(serializer)
# if the starting_at time has changed, add flag to livesessions that have subscribed
if (
serializer.instance.is_scheduled
and serializer.instance.starting_at != instance.starting_at
):
LiveSession.objects.filter(
should_send_reminders=True,
is_registered=True,
video=serializer.instance,
).exclude( # exclude current ones already tagged
must_notify__overlap=[
settings.REMINDER_DATE_UPDATED,
]
).exclude(
reminders__overlap=[
settings.REMINDER_DATE_UPDATED, # exclude current ones getting updated
settings.REMINDER_ERROR,
]
).update(
must_notify=Func(
F("must_notify"),
Value(settings.REMINDER_DATE_UPDATED),
function="array_append",
arity=2,
)
)
channel_layers_utils.dispatch_video_to_groups(serializer.instance)
def stop_recording(
self,
request,
pk=None,
):
"""Stops video recording.
Parameters
----------
request : Type[django.http.request.HttpRequest]
The request on the API endpoint
pk: string
The primary key of the video
Returns
-------
Type[rest_framework.response.Response]
HttpResponse with the serialized video.
"""
video = self.get_object()
try:
stop_recording(video)
except VideoRecordingError as error:
return Response({"detail": str(error)}, status=400)
channel_layers_utils.dispatch_video_to_groups(video)
serializer = self.get_serializer(video)
return Response(serializer.data)
def end_sharing(
self,
request,
pk=None,
):
"""Ends the media live sharing in a live stream.
Broadcasts a xmpp message to all users in the video room.
Parameters
----------
request : Type[django.http.request.HttpRequest]
The request on the API endpoint
pk: string
The primary key of the video
Returns
-------
Type[rest_framework.response.Response]
HttpResponse with the serialized video.
"""
video = self.get_object()
if not video.active_shared_live_media:
return Response({"detail": "No shared live media."}, status=400)
video.active_shared_live_media = None
video.active_shared_live_media_page = None
video.save()
serializer = self.get_serializer(video)
channel_layers_utils.dispatch_video_to_groups(video)
return Response(serializer.data)
def destroy(self, request, *args, **kwargs):
"""
Delete the SharedLiveMedia object.
If active on a video,
sets the video's `active_shared_live_media` and `active_shared_live_media_page`
attributes to None.
"""
shared_live_media = self.get_object()
video = shared_live_media.video
if video.active_shared_live_media == shared_live_media:
video.active_shared_live_media = None
video.active_shared_live_media_page = None
video.save()
response = super().destroy(request, *args, **kwargs)
channel_layers_utils.dispatch_video_to_groups(video)
return response
def participants_in_discussion(
self,
request,
pk=None,
):
"""Adds and deletes a participant who have joined a live stream.
Broadcasts a xmpp message to all users in the video room.
Parameters
----------
request : Type[django.http.request.HttpRequest]
The request on the API endpoint, it should contain a payload with a participant.
pk: string
The primary key of the video
Returns
-------
Type[rest_framework.response.Response]
HttpResponse with the serialized video.
"""
participant_serializer = serializers.ParticipantSerializer(data=request.data)
if not participant_serializer.is_valid():
return Response(
participant_serializer.errors, status=status.HTTP_400_BAD_REQUEST
)
video = self.get_object()
try:
if request.method == "POST":
move_participant_to_discussion(
video, participant_serializer.validated_data
)
elif request.method == "DELETE":
remove_participant_from_discussion(
video, participant_serializer.validated_data
)
except VideoParticipantsException as error:
return Response({"detail": str(error)}, status=status.HTTP_400_BAD_REQUEST)
serializer = self.get_serializer(video)
channel_layers_utils.dispatch_video_to_groups(video)
return Response(serializer.data)
def navigate_sharing(
self,
request,
pk=None,
):
"""Changes page of the media live shared in a live stream.
Broadcasts a xmpp message to all users in the video room.
Parameters
----------
request : Type[django.http.request.HttpRequest]
The request on the API endpoint
pk: string
The primary key of the video
Returns
-------
Type[rest_framework.response.Response]
HttpResponse with the serialized video.
"""
video = self.get_object()
if not video.active_shared_live_media:
return Response({"detail": "No shared live media."}, status=400)
try:
target_page = int(request.data.get("target_page"))
except TypeError:
return Response({"detail": "Invalid page number."}, status=400)
if target_page > video.active_shared_live_media.nb_pages:
return Response({"detail": "Page does not exist."}, status=400)
video.active_shared_live_media_page = target_page
video.save()
serializer = self.get_serializer(video)
channel_layers_utils.dispatch_video_to_groups(video)
return Response(serializer.data)
def start_sharing(
self,
request,
pk=None,
):
"""Starts a media live sharing in a live stream.
Broadcasts a xmpp message to all users in the video room.
Parameters
----------
request : Type[django.http.request.HttpRequest]
The request on the API endpoint
pk: string
The primary key of the video
Returns
-------
Type[rest_framework.response.Response]
HttpResponse with the serialized video.
"""
video = self.get_object()
if video.active_shared_live_media_id is not None:
return Response({"detail": "Video is already sharing."}, status=400)
sharedlivemedia = get_object_or_404(
SharedLiveMedia,
id=request.data.get("sharedlivemedia"),
video=video,
)
if sharedlivemedia.upload_state != defaults.READY:
return Response({"detail": "Shared live media is not ready."}, status=400)
video.active_shared_live_media = sharedlivemedia
video.active_shared_live_media_page = 1
video.save()
serializer = self.get_serializer(video)
channel_layers_utils.dispatch_video_to_groups(video)
return Response(serializer.data)
def stop_live(self, request, pk=None):
"""Stop a medialive channel on AWS.
Parameters
----------
request : Type[django.http.request.HttpRequest]
The request on the API endpoint
pk: string
The primary key of the video
Returns
-------
Type[rest_framework.response.Response]
HttpResponse with the serialized video.
"""
video = self.get_object()
if video.live_state is None:
return Response({"error": "Impossible to stop a non live video."}, 400)
if video.live_state != defaults.RUNNING:
return Response(
{
"error": f"Impossible to stop live video. Current status is {video.live_state}"
},
400,
)
stop_live_channel(video.get_medialive_channel().get("id"))
video.live_state = defaults.STOPPING
if video.is_recording:
stop_recording(video)
video.save()
channel_layers_utils.dispatch_video_to_groups(video)
serializer = self.get_serializer(video)
return Response(serializer.data)
def live_to_vod(self, request, pk=None):
"""Transforms an harvested live to a VOD.
Parameters
----------
request : Type[django.http.request.HttpRequest]
The request on the API endpoint
pk: string
The primary key of the video
Returns
-------
Type[rest_framework.response.Response]
HttpResponse with the serialized video.
"""
video = self.get_object()
if video.live_state != defaults.HARVESTED:
return Response(
{
"error": (
"Live video must be harvested before transforming it to VOD."
f" Current status is {video.live_state}"
)
},
400,
)
video.live_state = defaults.ENDED
video.upload_state = defaults.READY
video.save()
channel_layers_utils.dispatch_video_to_groups(video)
serializer = self.get_serializer(video)
return Response(serializer.data)
class VideoViewSet(ObjectPkMixin, viewsets.ModelViewSet):
"""Viewset for the API of the video object."""
queryset = Video.objects.all()
serializer_class = serializers.VideoSerializer
permission_classes = [permissions.NotAllowed]
def get_permissions(self):
"""
Manage permissions for built-in DRF methods.
Default to the actions' self defined permissions if applicable or
to the ViewSet's default permissions.
"""
if self.action in ["partial_update", "update"]:
permission_classes = [
permissions.IsTokenResourceRouteObject & permissions.IsTokenInstructor
| permissions.IsTokenResourceRouteObject & permissions.IsTokenAdmin
| permissions.IsVideoPlaylistAdmin
| permissions.IsVideoOrganizationAdmin
]
elif self.action in ["retrieve"]:
permission_classes = [
permissions.IsTokenResourceRouteObject
| permissions.IsVideoPlaylistAdmin
| permissions.IsVideoOrganizationAdmin
]
elif self.action in ["list"]:
permission_classes = [IsAuthenticated]
elif self.action in ["create"]:
permission_classes = [
permissions.IsParamsPlaylistAdmin
| permissions.IsParamsPlaylistAdminThroughOrganization
| (
permissions.HasPlaylistToken
& (permissions.IsTokenInstructor | permissions.IsTokenAdmin)
)
]
elif self.action in ["destroy"]:
permission_classes = [
permissions.IsVideoPlaylistAdmin | permissions.IsVideoOrganizationAdmin
]
else:
try:
permission_classes = (
getattr(self, self.action).kwargs.get("permission_classes")
if self.action
else self.permission_classes
)
except AttributeError:
permission_classes = self.permission_classes
return [permission() for permission in permission_classes]
def get_serializer_context(self):
"""Extra context provided to the serializer class."""
context = super().get_serializer_context()
user = self.request.user
if isinstance(user, TokenUser):
context.update(user.token.payload)
admin_role_permission = permissions.IsTokenAdmin()
instructor_role_permission = permissions.IsTokenInstructor()
context["is_admin"] = admin_role_permission.has_permission(
request=self.request, view=None
) or instructor_role_permission.has_permission(
request=self.request, view=None
)
return context
def perform_update(self, serializer):
instance = self.get_object()
super().perform_update(serializer)
# if the starting_at time has changed, add flag to livesessions that have subscribed
if (
serializer.instance.is_scheduled
and serializer.instance.starting_at != instance.starting_at
):
LiveSession.objects.filter(
should_send_reminders=True,
is_registered=True,
video=serializer.instance,
).exclude( # exclude current ones already tagged
must_notify__overlap=[
settings.REMINDER_DATE_UPDATED,
]
).exclude(
reminders__overlap=[
settings.REMINDER_DATE_UPDATED, # exclude current ones getting updated
settings.REMINDER_ERROR,
]
).update(
must_notify=Func(
F("must_notify"),
Value(settings.REMINDER_DATE_UPDATED),
function="array_append",
arity=2,
)
)
channel_layers_utils.dispatch_video_to_groups(serializer.instance)
def create(self, request, *args, **kwargs):
"""Create one video based on the request payload."""
try:
form = forms.VideoForm(request.data)
video = form.save()
except ValueError:
return Response({"errors": [dict(form.errors)]}, status=400)
serializer = self.get_serializer(video)
return Response(serializer.data, status=201)
def list(self, request, *args, **kwargs):
"""List videos through the API."""
# Limit the queryset to the playlists the user has access directly or through
# an access they have to an organization
queryset = self.get_queryset().filter(
Q(playlist__user_accesses__user__id=request.user.id)
| Q(playlist__organization__user_accesses__user__id=request.user.id)
)
playlist = request.query_params.get("playlist")
if playlist is not None:
queryset = queryset.filter(playlist__id=playlist)
organization = request.query_params.get("organization")
if organization is not None:
queryset = queryset.filter(playlist__organization__id=organization)
queryset = queryset.order_by("title")
page = self.paginate_queryset(queryset)
if page is not None:
serializer = self.get_serializer(page, many=True)
return self.get_paginated_response(serializer.data)
serializer = self.get_serializer(queryset, many=True)
return Response(serializer.data)
@action(
methods=["post"],
detail=True,
url_path="initiate-upload",
permission_classes=[
permissions.IsTokenResourceRouteObject & permissions.IsTokenInstructor
| permissions.IsTokenResourceRouteObject & permissions.IsTokenAdmin
| permissions.IsVideoPlaylistAdmin
| permissions.IsVideoOrganizationAdmin
],
)
# pylint: disable=unused-argument
def initiate_upload(self, request, pk=None):
"""Get an upload policy for a video.
Calling the endpoint resets the upload state to `pending` and returns an upload policy to
selected video backend.
Parameters
----------
request : Type[django.http.request.HttpRequest]
The request on the API endpoint
pk: string
The primary key of the video
Returns
-------
Type[rest_framework.response.Response]
HttpResponse carrying the upload policy as a JSON object.
"""
response = storage.get_initiate_backend().initiate_video_upload(request, pk)
# Reset the upload state of the video
Video.objects.filter(pk=pk).update(upload_state=defaults.PENDING)
return Response(response)
@action(
methods=["post"],
detail=True,
url_path="initiate-live",
permission_classes=[
permissions.IsTokenResourceRouteObject & permissions.IsTokenInstructor
| permissions.IsTokenResourceRouteObject & permissions.IsTokenAdmin
| permissions.HasPlaylistToken
],
)
# pylint: disable=unused-argument
def initiate_live(
self,
request,
pk=None,
):
"""Create a live stack on AWS ready to stream.
Parameters
----------
request : Type[django.http.request.HttpRequest]
The request on the API endpoint
pk: string
The primary key of the video
Returns
-------
Type[rest_framework.response.Response]
HttpResponse with the serialized video.
"""
serializer = serializers.InitLiveStateSerializer(data=request.data)
if not serializer.is_valid():
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
video = self.get_object()
video.live_type = serializer.validated_data["type"]
video.upload_state = defaults.PENDING
video.live_state = defaults.IDLE
video.uploaded_on = None
video.save()
# Dispatch only for admin users. No student should be connected on the video at this point.
channel_layers_utils.dispatch_video(video, to_admin=True)
serializer = self.get_serializer(video)
return Response(serializer.data)
@action(
methods=["post"],
detail=True,
url_path="start-live",
permission_classes=[
permissions.IsTokenResourceRouteObject & permissions.IsTokenInstructor
| permissions.IsTokenResourceRouteObject & permissions.IsTokenAdmin
],
)
# pylint: disable=unused-argument
def start_live(self, request, pk=None):
"""Start a medialive channel on AWS.
Parameters
----------
request : Type[django.http.request.HttpRequest]
The request on the API endpoint
pk: string
The primary key of the video
Returns
-------
Type[rest_framework.response.Response]
HttpResponse with the serialized video.
"""
video = self.get_object()
if video.live_state is None:
return Response({"error": "Call initiate-live before starting a live"}, 400)
if video.live_state not in [
defaults.IDLE,
defaults.STOPPED,
defaults.HARVESTED,
]:
return Response(
{
"error": (
f"Impossible to start live video. Current status is {video.live_state}"
)
},
400,
)
# dispatch earlier in the websocket that the live is starting without saving it
tmp_video = deepcopy(video)
tmp_video.live_state = defaults.STARTING
if settings.LIVE_CHAT_ENABLED:
create_room(video.id)
channel_layers_utils.dispatch_video_to_groups(tmp_video)
del tmp_video
if video.live_info is None or video.live_state == defaults.HARVESTED:
now = timezone.now()
stamp = to_timestamp(now)
key = f"{video.pk}_{stamp}"
video.live_info = create_live_stream(key)
wait_medialive_channel_is_created(video.get_medialive_channel().get("id"))
start_live_channel(video.get_medialive_channel().get("id"))
# if the video has been harvested, we need to reset its recordings
# and its related live attendances
if video.live_state == defaults.HARVESTED:
video.recording_slices = []
LiveSession.objects.filter(video=video).update(live_attendance=None)
video.live_state = defaults.STARTING
video.upload_state = defaults.PENDING
video.resolutions = None
video.save()
channel_layers_utils.dispatch_video_to_groups(video)
serializer = self.get_serializer(video)
return Response(serializer.data)
@action(
methods=["post"],
detail=True,
url_path="stop-live",
permission_classes=[
permissions.IsTokenResourceRouteObject & permissions.IsTokenInstructor
| permissions.IsTokenResourceRouteObject & permissions.IsTokenAdmin
],
)
# pylint: disable=unused-argument
def stop_live(self, request, pk=None):
"""Stop a medialive channel on AWS.
Parameters
----------
request : Type[django.http.request.HttpRequest]
The request on the API endpoint
pk: string
The primary key of the video
Returns
-------
Type[rest_framework.response.Response]
HttpResponse with the serialized video.
"""
video = self.get_object()
if video.live_state is None:
return Response({"error": "Impossible to stop a non live video."}, 400)
if video.live_state != defaults.RUNNING:
return Response(
{
"error": f"Impossible to stop live video. Current status is {video.live_state}"
},
400,
)
stop_live_channel(video.get_medialive_channel().get("id"))
video.live_state = defaults.STOPPING
if video.is_recording:
stop_recording(video)
video.save()
channel_layers_utils.dispatch_video_to_groups(video)
serializer = self.get_serializer(video)
return Response(serializer.data)
@action(
methods=["post"],
detail=True,
url_path="harvest-live",
permission_classes=[
permissions.IsTokenResourceRouteObject & permissions.IsTokenInstructor
| permissions.IsTokenResourceRouteObject & permissions.IsTokenAdmin
],
)
# pylint: disable=unused-argument
def harvest_live(self, request, pk=None):
"""harvest a medialive channel on AWS and delete its stack.
Parameters
----------
request : Type[django.http.request.HttpRequest]
The request on the API endpoint
pk: string
The primary key of the video
Returns
-------
Type[rest_framework.response.Response]
HttpResponse with the serialized video.
"""
video = self.get_object()
if video.live_state is None:
return Response({"error": "Impossible to harvest a non live video."}, 400)
if video.live_state != defaults.STOPPED:
return Response(
{
"error": (
"Live video must be stopped before harvesting it."
f" Current status is {video.live_state}"
)
},
400,
)
if not video.recording_slices:
return Response(
{"error": "Live video must be recording before harvesting it."}, 400
)
# dispatch earlier in the websocket that the live is harvesting without saving it
tmp_video = deepcopy(video)
tmp_video.live_state = defaults.HARVESTING
channel_layers_utils.dispatch_video_to_groups(tmp_video)
del tmp_video
if video.is_recording:
stop_recording(video)
delete_aws_element_stack(video)
if settings.LIVE_CHAT_ENABLED:
close_room(video.id)
try:
create_mediapackage_harvest_job(video)
video.live_state = defaults.HARVESTING
except ManifestMissingException:
delete_mediapackage_channel(video.get_mediapackage_channel().get("id"))
video.upload_state = defaults.PENDING
video.live_state = defaults.STOPPED
video.live_info = {
"started_at": video.live_info.get("started_at"),
"stopped_at": video.live_info.get("stopped_at"),
}
video.save()
channel_layers_utils.dispatch_video_to_groups(video)
serializer = self.get_serializer(video)
return Response(serializer.data)
@action(
methods=["post"],
detail=True,
url_path="live-to-vod",
permission_classes=[
permissions.IsTokenResourceRouteObject & permissions.IsTokenInstructor
| permissions.IsTokenResourceRouteObject & permissions.IsTokenAdmin
],
)
# pylint: disable=unused-argument
def live_to_vod(self, request, pk=None):
"""Transforms an harvested live to a VOD.
Parameters
----------
request : Type[django.http.request.HttpRequest]
The request on the API endpoint
pk: string
The primary key of the video
Returns
-------
Type[rest_framework.response.Response]
HttpResponse with the serialized video.
"""
video = self.get_object()
if video.live_state != defaults.HARVESTED:
return Response(
{
"error": (
"Live video must be harvested before transforming it to VOD."
f" Current status is {video.live_state}"
)
},
400,
)
video.live_state = defaults.ENDED
video.upload_state = defaults.READY
video.save()
channel_layers_utils.dispatch_video_to_groups(video)
serializer = self.get_serializer(video)
return Response(serializer.data)
@action(
methods=["patch"],
detail=True,
url_path="update-live-state",
permission_classes=[],
)
# pylint: disable=unused-argument
def update_live_state(
self,
request,
pk=None,
):
"""View handling AWS POST request to update the video live state.
Parameters
----------
request : Type[django.http.request.HttpRequest]
The request on the API endpoint, it should contain a payload with the following fields:
- state: state of the live, should be "live" or "stopped",
pk: string
The primary key of the video
Returns
-------
Type[rest_framework.response.Response]
HttpResponse acknowledging the success or failure of the live state update operation.
"""
now = timezone.now()
stamp = to_timestamp(now)
msg = request.body
serializer = serializers.UpdateLiveStateSerializer(data=request.data)
if serializer.is_valid() is not True:
return Response(serializer.errors, status=400)
# Check if the provided signature is valid against any secret in our list
if not validate_signature(request.headers.get("X-Marsha-Signature"), msg):
return Response("Forbidden", status=403)
with transaction.atomic():
try:
video = Video.objects.select_for_update(nowait=True).get(pk=pk)
except Video.DoesNotExist as video_does_not_exists:
raise Http404 from video_does_not_exists
except OperationalError:
return Response({"success": True})
request_ids = video.live_info.get("medialive", {}).get("request_ids", [])
if serializer.validated_data["requestId"] in request_ids:
return Response({"success": True})
request_ids.append(serializer.validated_data["requestId"])
video.live_info["medialive"].update({"request_ids": request_ids})
video.save()
live_info = video.live_info
live_info.update(
{"cloudwatch": {"logGroupName": serializer.validated_data["logGroupName"]}}
)
if serializer.validated_data["state"] == defaults.RUNNING:
video.live_state = defaults.RUNNING
live_info.update({"started_at": stamp})
live_info.pop("stopped_at", None)
# if keys with no timeout were cached for this video, it needs to be reinitialized
key_cache_video = f"{defaults.VIDEO_ATTENDANCE_KEY_CACHE}{video.id}"
if list_keys := cache.get(key_cache_video, None):
cache.delete_many(list_keys)
cache.delete(key_cache_video)
if serializer.validated_data["state"] == defaults.STOPPED:
video.live_state = defaults.STOPPED
live_info.update({"stopped_at": stamp})
video.live_info = live_info
if serializer.validated_data["state"] == defaults.HARVESTED:
video.live_state = defaults.HARVESTED
video.resolutions = serializer.validated_data["extraParameters"].get(
"resolutions"
)
live_info = {
"started_at": video.live_info.get("started_at"),
"stopped_at": video.live_info.get("stopped_at"),
}
video.uploaded_on = time_utils.to_datetime(
serializer.validated_data["extraParameters"].get("uploaded_on")
)
video.live_info = live_info
video.save()
channel_layers_utils.dispatch_video_to_groups(video)
return Response({"success": True})
def harvest_live(self, request, pk=None):
"""harvest a medialive channel on AWS and delete its stack.
Parameters
----------
request : Type[django.http.request.HttpRequest]
The request on the API endpoint
pk: string
The primary key of the video
Returns
-------
Type[rest_framework.response.Response]
HttpResponse with the serialized video.
"""
video = self.get_object()
if video.live_state is None:
return Response({"error": "Impossible to harvest a non live video."}, 400)
if video.live_state != defaults.STOPPED:
return Response(
{
"error": (
"Live video must be stopped before harvesting it."
f" Current status is {video.live_state}"
)
},
400,
)
if not video.recording_slices:
return Response(
{"error": "Live video must be recording before harvesting it."}, 400
)
# dispatch earlier in the websocket that the live is harvesting without saving it
tmp_video = deepcopy(video)
tmp_video.live_state = defaults.HARVESTING
channel_layers_utils.dispatch_video_to_groups(tmp_video)
del tmp_video
if video.is_recording:
stop_recording(video)
delete_aws_element_stack(video)
if settings.LIVE_CHAT_ENABLED:
close_room(video.id)
try:
create_mediapackage_harvest_job(video)
video.live_state = defaults.HARVESTING
except ManifestMissingException:
delete_mediapackage_channel(video.get_mediapackage_channel().get("id"))
video.upload_state = defaults.PENDING
video.live_state = defaults.STOPPED
video.live_info = {
"started_at": video.live_info.get("started_at"),
"stopped_at": video.live_info.get("stopped_at"),
}
video.save()
channel_layers_utils.dispatch_video_to_groups(video)
serializer = self.get_serializer(video)
return Response(serializer.data)
def start_live(self, request, pk=None):
"""Start a medialive channel on AWS.
Parameters
----------
request : Type[django.http.request.HttpRequest]
The request on the API endpoint
pk: string
The primary key of the video
Returns
-------
Type[rest_framework.response.Response]
HttpResponse with the serialized video.
"""
video = self.get_object()
if video.live_state is None:
return Response({"error": "Call initiate-live before starting a live"}, 400)
if video.live_state not in [
defaults.IDLE,
defaults.STOPPED,
defaults.HARVESTED,
]:
return Response(
{
"error": (
f"Impossible to start live video. Current status is {video.live_state}"
)
},
400,
)
# dispatch earlier in the websocket that the live is starting without saving it
tmp_video = deepcopy(video)
tmp_video.live_state = defaults.STARTING
if settings.LIVE_CHAT_ENABLED:
create_room(video.id)
channel_layers_utils.dispatch_video_to_groups(tmp_video)
del tmp_video
if video.live_info is None or video.live_state == defaults.HARVESTED:
now = timezone.now()
stamp = to_timestamp(now)
key = f"{video.pk}_{stamp}"
video.live_info = create_live_stream(key)
wait_medialive_channel_is_created(video.get_medialive_channel().get("id"))
start_live_channel(video.get_medialive_channel().get("id"))
# if the video has been harvested, we need to reset its recordings
# and its related live attendances
if video.live_state == defaults.HARVESTED:
video.recording_slices = []
LiveSession.objects.filter(video=video).update(live_attendance=None)
video.live_state = defaults.STARTING
video.upload_state = defaults.PENDING
video.resolutions = None
video.save()
channel_layers_utils.dispatch_video_to_groups(video)
serializer = self.get_serializer(video)
return Response(serializer.data)