def jobs(request, pk):
queryset = Job.objects.filter(segment__task_id=pk)
serializer = JobSerializer(queryset,
many=True,
context={"request": request})
return Response(serializer.data)
def jobs(self, request, pk):
self.get_object() # force to call check_object_permissions
queryset = Job.objects.filter(segment__task_id=pk)
serializer = JobSerializer(queryset, many=True,
context={"request": request})
return Response(serializer.data)
class TaskViewSet(auth.TaskGetQuerySetMixin, viewsets.ModelViewSet):
queryset = Task.objects.all().prefetch_related(
"label_set__attributespec_set",
"segment_set__job_set",
).order_by('-id')
serializer_class = TaskSerializer
search_fields = ("name", "owner__username", "mode", "status")
filterset_class = TaskFilter
ordering_fields = ("id", "name", "owner", "status", "assignee")
def get_permissions(self):
http_method = self.request.method
permissions = [IsAuthenticated]
if http_method in SAFE_METHODS:
permissions.append(auth.TaskAccessPermission)
elif http_method in ["POST"]:
permissions.append(auth.TaskCreatePermission)
elif self.action == 'annotations' or http_method in ["PATCH", "PUT"]:
permissions.append(auth.TaskChangePermission)
elif http_method in ["DELETE"]:
permissions.append(auth.TaskDeletePermission)
else:
permissions.append(auth.AdminRolePermission)
return [perm() for perm in permissions]
def perform_create(self, serializer):
def validate_task_limit(owner):
admin_perm = auth.AdminRolePermission()
is_admin = admin_perm.has_permission(self.request, self)
if not is_admin and settings.RESTRICTIONS['task_limit'] is not None and \
Task.objects.filter(owner=owner).count() >= settings.RESTRICTIONS['task_limit']:
raise serializers.ValidationError(
'The user has the maximum number of tasks')
owner = self.request.data.get('owner', None)
if owner:
validate_task_limit(owner)
serializer.save()
else:
validate_task_limit(self.request.user)
serializer.save(owner=self.request.user)
def perform_destroy(self, instance):
task_dirname = instance.get_task_dirname()
super().perform_destroy(instance)
shutil.rmtree(task_dirname, ignore_errors=True)
if instance.data and not instance.data.tasks.all():
shutil.rmtree(instance.data.get_data_dirname(), ignore_errors=True)
instance.data.delete()
@swagger_auto_schema(
method='get',
operation_summary='Returns a list of jobs for a specific task',
responses={'200': JobSerializer(many=True)})
@action(detail=True, methods=['GET'], serializer_class=JobSerializer)
def jobs(self, request, pk):
self.get_object() # force to call check_object_permissions
queryset = Job.objects.filter(segment__task_id=pk)
serializer = JobSerializer(queryset,
many=True,
context={"request": request})
return Response(serializer.data)
@swagger_auto_schema(
method='post',
operation_summary=
'Method permanently attaches images or video to a task',
request_body=DataSerializer,
)
@swagger_auto_schema(
method='get',
operation_summary='Method returns data for a specific task',
manual_parameters=[
openapi.Parameter(
'type',
in_=openapi.IN_QUERY,
required=True,
type=openapi.TYPE_STRING,
enum=['chunk', 'frame', 'preview'],
description="Specifies the type of the requested data"),
openapi.Parameter(
'quality',
in_=openapi.IN_QUERY,
required=True,
type=openapi.TYPE_STRING,
enum=['compressed', 'original'],
description=
"Specifies the quality level of the requested data, doesn't matter for 'preview' type"
),
openapi.Parameter(
'number',
in_=openapi.IN_QUERY,
required=True,
type=openapi.TYPE_NUMBER,
description=
"A unique number value identifying chunk or frame, doesn't matter for 'preview' type"
),
])
@action(detail=True, methods=['POST', 'GET'])
def data(self, request, pk):
if request.method == 'POST':
db_task = self.get_object(
) # call check_object_permissions as well
serializer = DataSerializer(data=request.data)
serializer.is_valid(raise_exception=True)
db_data = serializer.save()
db_task.data = db_data
db_task.save()
data = {k: v for k, v in serializer.data.items()}
data['use_zip_chunks'] = serializer.validated_data[
'use_zip_chunks']
data['use_cache'] = serializer.validated_data['use_cache']
if data['use_cache']:
db_task.data.storage_method = StorageMethodChoice.CACHE
db_task.data.save(update_fields=['storage_method'])
# if the value of stop_frame is 0, then inside the function we cannot know
# the value specified by the user or it's default value from the database
if 'stop_frame' not in serializer.validated_data:
data['stop_frame'] = None
task.create(db_task.id, data)
return Response(serializer.data, status=status.HTTP_202_ACCEPTED)
else:
data_type = request.query_params.get('type', None)
data_id = request.query_params.get('number', None)
data_quality = request.query_params.get('quality', 'compressed')
possible_data_type_values = ('chunk', 'frame', 'preview')
possible_quality_values = ('compressed', 'original')
if not data_type or data_type not in possible_data_type_values:
return Response(
data='data type not specified or has wrong value',
status=status.HTTP_400_BAD_REQUEST)
elif data_type == 'chunk' or data_type == 'frame':
if not data_id:
return Response(data='number not specified',
status=status.HTTP_400_BAD_REQUEST)
elif data_quality not in possible_quality_values:
return Response(data='wrong quality value',
status=status.HTTP_400_BAD_REQUEST)
try:
db_task = self.get_object()
db_data = db_task.data
frame_provider = FrameProvider(db_task.data)
if data_type == 'chunk':
data_id = int(data_id)
data_quality = FrameProvider.Quality.COMPRESSED \
if data_quality == 'compressed' else FrameProvider.Quality.ORIGINAL
#TODO: av.FFmpegError processing
if settings.USE_CACHE and db_data.storage_method == StorageMethodChoice.CACHE:
buff, mime_type = frame_provider.get_chunk(
data_id, data_quality)
return HttpResponse(buff.getvalue(),
content_type=mime_type)
# Follow symbol links if the chunk is a link on a real image otherwise
# mimetype detection inside sendfile will work incorrectly.
path = os.path.realpath(
frame_provider.get_chunk(data_id, data_quality))
return sendfile(request, path)
elif data_type == 'frame':
data_id = int(data_id)
data_quality = FrameProvider.Quality.COMPRESSED \
if data_quality == 'compressed' else FrameProvider.Quality.ORIGINAL
buf, mime = frame_provider.get_frame(data_id, data_quality)
return HttpResponse(buf.getvalue(), content_type=mime)
elif data_type == 'preview':
return sendfile(request, frame_provider.get_preview())
else:
return Response(
data='unknown data type {}.'.format(data_type),
status=status.HTTP_400_BAD_REQUEST)
except APIException as e:
return Response(data=e.default_detail, status=e.status_code)
except Exception as e:
msg = 'cannot get requested data type: {}, number: {}, quality: {}'.format(
data_type, data_id, data_quality)
slogger.task[pk].error(msg, exc_info=True)
return Response(data=msg + '\n' + str(e),
status=status.HTTP_400_BAD_REQUEST)
@swagger_auto_schema(
method='get',
operation_summary='Method allows to download task annotations',
manual_parameters=[
openapi.Parameter(
'format',
openapi.IN_QUERY,
description=
"Desired output format name\nYou can get the list of supported formats at:\n/server/annotation/formats",
type=openapi.TYPE_STRING,
required=False),
openapi.Parameter('filename',
openapi.IN_QUERY,
description="Desired output file name",
type=openapi.TYPE_STRING,
required=False),
openapi.Parameter(
'action',
in_=openapi.IN_QUERY,
description=
'Used to start downloading process after annotation file had been created',
type=openapi.TYPE_STRING,
required=False,
enum=['download'])
],
responses={
'202':
openapi.Response(
description='Dump of annotations has been started'),
'201':
openapi.Response(
description='Annotations file is ready to download'),
'200':
openapi.Response(description='Download of file started'),
'405':
openapi.Response(description='Format is not available'),
})
@swagger_auto_schema(
method='put',
operation_summary='Method allows to upload task annotations',
manual_parameters=[
openapi.Parameter(
'format',
openapi.IN_QUERY,
description=
"Input format name\nYou can get the list of supported formats at:\n/server/annotation/formats",
type=openapi.TYPE_STRING,
required=False),
],
responses={
'202': openapi.Response(description='Uploading has been started'),
'201': openapi.Response(description='Uploading has finished'),
'405': openapi.Response(description='Format is not available'),
})
@swagger_auto_schema(
method='patch',
operation_summary=
'Method performs a partial update of annotations in a specific task',
manual_parameters=[
openapi.Parameter('action',
in_=openapi.IN_QUERY,
required=True,
type=openapi.TYPE_STRING,
enum=['create', 'update', 'delete'])
])
@swagger_auto_schema(
method='delete',
operation_summary='Method deletes all annotations for a specific task')
@action(detail=True,
methods=['GET', 'DELETE', 'PUT', 'PATCH'],
serializer_class=LabeledDataSerializer)
def annotations(self, request, pk):
db_task = self.get_object() # force to call check_object_permissions
if request.method == 'GET':
format_name = request.query_params.get('format')
if format_name:
return _export_annotations(
db_task=db_task,
rq_id="/api/v1/tasks/{}/annotations/{}".format(
pk, format_name),
request=request,
action=request.query_params.get("action", "").lower(),
callback=dm.views.export_task_annotations,
format_name=format_name,
filename=request.query_params.get("filename", "").lower(),
)
else:
data = dm.task.get_task_data(pk)
serializer = LabeledDataSerializer(data=data)
if serializer.is_valid(raise_exception=True):
return Response(serializer.data)
elif request.method == 'PUT':
format_name = request.query_params.get('format')
if format_name:
return _import_annotations(
request=request,
rq_id="{}@/api/v1/tasks/{}/annotations/upload".format(
request.user, pk),
rq_func=dm.task.import_task_annotations,
pk=pk,
format_name=format_name,
)
else:
serializer = LabeledDataSerializer(data=request.data)
if serializer.is_valid(raise_exception=True):
data = dm.task.put_task_data(pk, serializer.data)
return Response(data)
elif request.method == 'DELETE':
dm.task.delete_task_data(pk)
return Response(status=status.HTTP_204_NO_CONTENT)
elif request.method == 'PATCH':
action = self.request.query_params.get("action", None)
if action not in dm.task.PatchAction.values():
raise serializers.ValidationError(
"Please specify a correct 'action' for the request")
serializer = LabeledDataSerializer(data=request.data)
if serializer.is_valid(raise_exception=True):
try:
data = dm.task.patch_task_data(pk, serializer.data, action)
except (AttributeError, IntegrityError) as e:
return Response(data=str(e),
status=status.HTTP_400_BAD_REQUEST)
return Response(data)
@swagger_auto_schema(
method='get',
operation_summary=
'When task is being created the method returns information about a status of the creation process'
)
@action(detail=True, methods=['GET'], serializer_class=RqStatusSerializer)
def status(self, request, pk):
self.get_object() # force to call check_object_permissions
response = self._get_rq_response(queue="default",
job_id="/api/{}/tasks/{}".format(
request.version, pk))
serializer = RqStatusSerializer(data=response)
if serializer.is_valid(raise_exception=True):
return Response(serializer.data)
@staticmethod
def _get_rq_response(queue, job_id):
queue = django_rq.get_queue(queue)
job = queue.fetch_job(job_id)
response = {}
if job is None or job.is_finished:
response = {"state": "Finished"}
elif job.is_queued:
response = {"state": "Queued"}
elif job.is_failed:
response = {"state": "Failed", "message": job.exc_info}
else:
response = {"state": "Started"}
if 'status' in job.meta:
response['message'] = job.meta['status']
return response
@staticmethod
@swagger_auto_schema(
method='get',
operation_summary=
'Method provides a meta information about media files which are related with the task',
responses={'200': DataMetaSerializer()})
@action(detail=True,
methods=['GET'],
serializer_class=DataMetaSerializer,
url_path='data/meta')
def data_info(request, pk):
db_task = models.Task.objects.prefetch_related(
'data__images').select_related('data__video').get(pk=pk)
if hasattr(db_task.data, 'video'):
media = [db_task.data.video]
else:
media = list(db_task.data.images.order_by('frame'))
frame_meta = [{
'width': item.width,
'height': item.height,
'name': item.path,
} for item in media]
db_data = db_task.data
db_data.frames = frame_meta
serializer = DataMetaSerializer(db_data)
return Response(serializer.data)
@swagger_auto_schema(
method='get',
operation_summary='Export task as a dataset in a specific format',
manual_parameters=[
openapi.Parameter(
'format',
openapi.IN_QUERY,
description=
"Desired output format name\nYou can get the list of supported formats at:\n/server/annotation/formats",
type=openapi.TYPE_STRING,
required=True),
openapi.Parameter('filename',
openapi.IN_QUERY,
description="Desired output file name",
type=openapi.TYPE_STRING,
required=False),
openapi.Parameter(
'action',
in_=openapi.IN_QUERY,
description=
'Used to start downloading process after annotation file had been created',
type=openapi.TYPE_STRING,
required=False,
enum=['download'])
],
responses={
'202':
openapi.Response(description='Exporting has been started'),
'201':
openapi.Response(
description='Output file is ready for downloading'),
'200':
openapi.Response(description='Download of file started'),
'405':
openapi.Response(description='Format is not available'),
})
@action(detail=True,
methods=['GET'],
serializer_class=None,
url_path='dataset')
def dataset_export(self, request, pk):
db_task = self.get_object() # force to call check_object_permissions
format_name = request.query_params.get("format", "")
return _export_annotations(
db_task=db_task,
rq_id="/api/v1/tasks/{}/dataset/{}".format(pk, format_name),
request=request,
action=request.query_params.get("action", "").lower(),
callback=dm.views.export_task_as_dataset,
format_name=format_name,
filename=request.query_params.get("filename", "").lower(),
)
class TaskViewSet(auth.TaskGetQuerySetMixin, viewsets.ModelViewSet):
queryset = Task.objects.all().prefetch_related(
"label_set__attributespec_set",
"segment_set__job_set",
).order_by('-id')
serializer_class = TaskSerializer
search_fields = ("name", "owner__username", "mode", "status")
filterset_class = TaskFilter
ordering_fields = ("id", "name", "owner", "status", "assignee")
def get_permissions(self):
http_method = self.request.method
permissions = [IsAuthenticated]
if http_method in SAFE_METHODS:
permissions.append(auth.TaskAccessPermission)
elif http_method in ["POST"]:
permissions.append(auth.TaskCreatePermission)
elif self.action == 'annotations' or http_method in ["PATCH", "PUT"]:
permissions.append(auth.TaskChangePermission)
elif http_method in ["DELETE"]:
permissions.append(auth.TaskDeletePermission)
else:
permissions.append(auth.AdminRolePermission)
return [perm() for perm in permissions]
def perform_create(self, serializer):
if self.request.data.get('owner', None):
serializer.save()
else:
serializer.save(owner=self.request.user)
def perform_destroy(self, instance):
task_dirname = instance.get_task_dirname()
super().perform_destroy(instance)
shutil.rmtree(task_dirname, ignore_errors=True)
if instance.data and not instance.data.tasks.all():
shutil.rmtree(instance.data.get_data_dirname(), ignore_errors=True)
instance.data.delete()
@swagger_auto_schema(
method='get',
operation_summary='Returns a list of jobs for a specific task',
responses={'200': JobSerializer(many=True)})
@action(detail=True, methods=['GET'], serializer_class=JobSerializer)
def jobs(self, request, pk):
self.get_object() # force to call check_object_permissions
queryset = Job.objects.filter(segment__task_id=pk)
serializer = JobSerializer(queryset,
many=True,
context={"request": request})
return Response(serializer.data)
@swagger_auto_schema(
method='post',
operation_summary='Method permanently attaches images or video to a task'
)
@swagger_auto_schema(
method='get',
operation_summary='Method returns data for a specific task',
manual_parameters=[
openapi.Parameter(
'type',
in_=openapi.IN_QUERY,
required=True,
type=openapi.TYPE_STRING,
enum=['chunk', 'frame', 'preview'],
description="Specifies the type of the requested data"),
openapi.Parameter(
'quality',
in_=openapi.IN_QUERY,
required=True,
type=openapi.TYPE_STRING,
enum=['compressed', 'original'],
description=
"Specifies the quality level of the requested data, doesn't matter for 'preview' type"
),
openapi.Parameter(
'number',
in_=openapi.IN_QUERY,
required=True,
type=openapi.TYPE_NUMBER,
description=
"A unique number value identifying chunk or frame, doesn't matter for 'preview' type"
),
])
@action(detail=True, methods=['POST', 'GET'])
def data(self, request, pk):
if request.method == 'POST':
db_task = self.get_object(
) # call check_object_permissions as well
serializer = DataSerializer(data=request.data)
serializer.is_valid(raise_exception=True)
db_data = serializer.save()
db_task.data = db_data
db_task.save()
data = {k: v for k, v in serializer.data.items()}
data['use_zip_chunks'] = serializer.validated_data[
'use_zip_chunks']
# if the value of stop_frame is 0, then inside the function we cannot know
# the value specified by the user or it's default value from the database
if 'stop_frame' not in serializer.validated_data:
data['stop_frame'] = None
task.create(db_task.id, data)
return Response(serializer.data, status=status.HTTP_202_ACCEPTED)
else:
data_type = request.query_params.get('type', None)
data_id = request.query_params.get('number', None)
data_quality = request.query_params.get('quality', 'compressed')
possible_data_type_values = ('chunk', 'frame', 'preview')
possible_quality_values = ('compressed', 'original')
if not data_type or data_type not in possible_data_type_values:
return Response(
data='data type not specified or has wrong value',
status=status.HTTP_400_BAD_REQUEST)
elif data_type == 'chunk' or data_type == 'frame':
if not data_id:
return Response(data='number not specified',
status=status.HTTP_400_BAD_REQUEST)
elif data_quality not in possible_quality_values:
return Response(data='wrong quality value',
status=status.HTTP_400_BAD_REQUEST)
try:
db_task = self.get_object()
frame_provider = FrameProvider(db_task.data)
if data_type == 'chunk':
data_id = int(data_id)
data_quality = FrameProvider.Quality.COMPRESSED \
if data_quality == 'compressed' else FrameProvider.Quality.ORIGINAL
path = os.path.realpath(
frame_provider.get_chunk(data_id, data_quality))
# Follow symbol links if the chunk is a link on a real image otherwise
# mimetype detection inside sendfile will work incorrectly.
return sendfile(request, path)
elif data_type == 'frame':
data_id = int(data_id)
data_quality = FrameProvider.Quality.COMPRESSED \
if data_quality == 'compressed' else FrameProvider.Quality.ORIGINAL
buf, mime = frame_provider.get_frame(data_id, data_quality)
return HttpResponse(buf.getvalue(), content_type=mime)
elif data_type == 'preview':
return sendfile(request, frame_provider.get_preview())
else:
return Response(
data='unknown data type {}.'.format(data_type),
status=status.HTTP_400_BAD_REQUEST)
except APIException as e:
return Response(data=e.default_detail, status=e.status_code)
except Exception as e:
msg = 'cannot get requested data type: {}, number: {}, quality: {}'.format(
data_type, data_id, data_quality)
slogger.task[pk].error(msg, exc_info=True)
return Response(data=msg + '\n' + str(e),
status=status.HTTP_400_BAD_REQUEST)
@swagger_auto_schema(
method='get',
operation_summary='Method returns annotations for a specific task')
@swagger_auto_schema(
method='put',
operation_summary=
'Method performs an update of all annotations in a specific task')
@swagger_auto_schema(
method='patch',
operation_summary=
'Method performs a partial update of annotations in a specific task',
manual_parameters=[
openapi.Parameter('action',
in_=openapi.IN_QUERY,
required=True,
type=openapi.TYPE_STRING,
enum=['create', 'update', 'delete'])
])
@swagger_auto_schema(
method='delete',
operation_summary='Method deletes all annotations for a specific task')
@action(detail=True,
methods=['GET', 'DELETE', 'PUT', 'PATCH'],
serializer_class=LabeledDataSerializer)
def annotations(self, request, pk):
self.get_object() # force to call check_object_permissions
if request.method == 'GET':
data = annotation.get_task_data(pk, request.user)
serializer = LabeledDataSerializer(data=data)
if serializer.is_valid(raise_exception=True):
return Response(serializer.data)
elif request.method == 'PUT':
if request.query_params.get("format", ""):
return load_data_proxy(
request=request,
rq_id="{}@/api/v1/tasks/{}/annotations/upload".format(
request.user, pk),
rq_func=annotation.load_task_data,
pk=pk,
)
else:
serializer = LabeledDataSerializer(data=request.data)
if serializer.is_valid(raise_exception=True):
data = annotation.put_task_data(pk, request.user,
serializer.data)
return Response(data)
elif request.method == 'DELETE':
annotation.delete_task_data(pk, request.user)
return Response(status=status.HTTP_204_NO_CONTENT)
elif request.method == 'PATCH':
action = self.request.query_params.get("action", None)
if action not in annotation.PatchAction.values():
raise serializers.ValidationError(
"Please specify a correct 'action' for the request")
serializer = LabeledDataSerializer(data=request.data)
if serializer.is_valid(raise_exception=True):
try:
data = annotation.patch_task_data(pk, request.user,
serializer.data, action)
except (AttributeError, IntegrityError) as e:
return Response(data=str(e),
status=status.HTTP_400_BAD_REQUEST)
return Response(data)
@swagger_auto_schema(
method='get',
operation_summary='Method allows to download annotations as a file',
manual_parameters=[
openapi.Parameter('filename',
openapi.IN_PATH,
description="A name of a file with annotations",
type=openapi.TYPE_STRING,
required=True),
openapi.Parameter(
'format',
openapi.IN_QUERY,
description=
"A name of a dumper\nYou can get annotation dumpers from this API:\n/server/annotation/formats",
type=openapi.TYPE_STRING,
required=True),
openapi.Parameter(
'action',
in_=openapi.IN_QUERY,
description=
'Used to start downloading process after annotation file had been created',
required=False,
enum=['download'],
type=openapi.TYPE_STRING)
],
responses={
'202':
openapi.Response(
description='Dump of annotations has been started'),
'201':
openapi.Response(
description='Annotations file is ready to download'),
'200':
openapi.Response(description='Download of file started')
})
@action(detail=True,
methods=['GET'],
serializer_class=None,
url_path='annotations/(?P<filename>[^/]+)')
def dump(self, request, pk, filename):
"""
Dump of annotations in common case is a long process which cannot be performed within one request.
First request starts dumping process. When the file is ready (code 201) you can get it with query parameter action=download.
"""
filename = re.sub(r'[\\/*?:"<>|]', '_', filename)
username = request.user.username
db_task = self.get_object() # call check_object_permissions as well
timestamp = datetime.now().strftime("%Y_%m_%d_%H_%M_%S")
action = request.query_params.get("action")
if action not in [None, "download"]:
raise serializers.ValidationError(
"Please specify a correct 'action' for the request")
dump_format = request.query_params.get("format", "")
try:
db_dumper = AnnotationDumper.objects.get(display_name=dump_format)
except ObjectDoesNotExist:
raise serializers.ValidationError(
"Please specify a correct 'format' parameter for the request")
file_path = os.path.join(
db_task.get_task_artifacts_dirname(),
"{}.{}.{}.{}".format(filename, username, timestamp,
db_dumper.format.lower()))
queue = django_rq.get_queue("default")
rq_id = "{}@/api/v1/tasks/{}/annotations/{}/{}".format(
username, pk, dump_format, filename)
rq_job = queue.fetch_job(rq_id)
if rq_job:
if rq_job.is_finished:
if not rq_job.meta.get("download"):
if action == "download":
rq_job.meta[action] = True
rq_job.save_meta()
return sendfile(request,
rq_job.meta["file_path"],
attachment=True,
attachment_filename="{}.{}".format(
filename,
db_dumper.format.lower()))
else:
return Response(status=status.HTTP_201_CREATED)
else: # Remove the old dump file
try:
os.remove(rq_job.meta["file_path"])
except OSError:
pass
finally:
rq_job.delete()
elif rq_job.is_failed:
exc_info = str(rq_job.exc_info)
rq_job.delete()
return Response(data=exc_info,
status=status.HTTP_500_INTERNAL_SERVER_ERROR)
else:
return Response(status=status.HTTP_202_ACCEPTED)
rq_job = queue.enqueue_call(
func=annotation.dump_task_data,
args=(pk, request.user, file_path, db_dumper, request.scheme,
request.get_host()),
job_id=rq_id,
)
rq_job.meta["file_path"] = file_path
rq_job.save_meta()
return Response(status=status.HTTP_202_ACCEPTED)
@swagger_auto_schema(
method='get',
operation_summary=
'When task is being created the method returns information about a status of the creation process'
)
@action(detail=True, methods=['GET'], serializer_class=RqStatusSerializer)
def status(self, request, pk):
self.get_object() # force to call check_object_permissions
response = self._get_rq_response(queue="default",
job_id="/api/{}/tasks/{}".format(
request.version, pk))
serializer = RqStatusSerializer(data=response)
if serializer.is_valid(raise_exception=True):
return Response(serializer.data)
@staticmethod
def _get_rq_response(queue, job_id):
queue = django_rq.get_queue(queue)
job = queue.fetch_job(job_id)
response = {}
if job is None or job.is_finished:
response = {"state": "Finished"}
elif job.is_queued:
response = {"state": "Queued"}
elif job.is_failed:
response = {"state": "Failed", "message": job.exc_info}
else:
response = {"state": "Started"}
if 'status' in job.meta:
response['message'] = job.meta['status']
return response
@staticmethod
@swagger_auto_schema(
method='get',
operation_summary=
'Method provides a meta information about media files which are related with the task',
responses={'200': DataMetaSerializer()})
@action(detail=True,
methods=['GET'],
serializer_class=DataMetaSerializer,
url_path='data/meta')
def data_info(request, pk):
db_task = models.Task.objects.prefetch_related(
'data__images').select_related('data__video').get(pk=pk)
if hasattr(db_task.data, 'video'):
media = [db_task.data.video]
else:
media = list(db_task.data.images.order_by('frame'))
frame_meta = [{
'width': item.width,
'height': item.height,
'name': item.path,
} for item in media]
db_data = db_task.data
db_data.frames = frame_meta
serializer = DataMetaSerializer(db_data)
return Response(serializer.data)
@swagger_auto_schema(
method='get',
operation_summary='Export task as a dataset in a specific format',
manual_parameters=[
openapi.Parameter('action',
in_=openapi.IN_QUERY,
required=False,
type=openapi.TYPE_STRING,
enum=['download']),
openapi.Parameter('format',
in_=openapi.IN_QUERY,
required=False,
type=openapi.TYPE_STRING)
],
responses={
'202':
openapi.Response(
description='Dump of annotations has been started'),
'201':
openapi.Response(
description='Annotations file is ready to download'),
'200':
openapi.Response(description='Download of file started')
})
@action(detail=True,
methods=['GET'],
serializer_class=None,
url_path='dataset')
def dataset_export(self, request, pk):
db_task = self.get_object()
action = request.query_params.get("action", "")
action = action.lower()
if action not in ["", "download"]:
raise serializers.ValidationError(
"Unexpected parameter 'action' specified for the request")
dst_format = request.query_params.get("format", "")
if not dst_format:
dst_format = DatumaroTask.DEFAULT_FORMAT
dst_format = dst_format.lower()
if dst_format not in [
f['tag'] for f in DatumaroTask.get_export_formats()
]:
raise serializers.ValidationError(
"Unexpected parameter 'format' specified for the request")
rq_id = "/api/v1/tasks/{}/dataset/{}".format(pk, dst_format)
queue = django_rq.get_queue("default")
rq_job = queue.fetch_job(rq_id)
if rq_job:
last_task_update_time = timezone.localtime(db_task.updated_date)
request_time = rq_job.meta.get('request_time', None)
if request_time is None or request_time < last_task_update_time:
rq_job.cancel()
rq_job.delete()
else:
if rq_job.is_finished:
file_path = rq_job.return_value
if action == "download" and osp.exists(file_path):
rq_job.delete()
timestamp = datetime.now().strftime(
"%Y_%m_%d_%H_%M_%S")
filename = "task_{}-{}-{}.zip".format(
db_task.name, timestamp, dst_format)
return sendfile(request,
file_path,
attachment=True,
attachment_filename=filename.lower())
else:
if osp.exists(file_path):
return Response(status=status.HTTP_201_CREATED)
elif rq_job.is_failed:
exc_info = str(rq_job.exc_info)
rq_job.delete()
return Response(
exc_info, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
else:
return Response(status=status.HTTP_202_ACCEPTED)
try:
server_address = request.get_host()
except Exception:
server_address = None
ttl = DatumaroTask.CACHE_TTL.total_seconds()
queue.enqueue_call(func=DatumaroTask.export_project,
args=(pk, request.user, dst_format, server_address),
job_id=rq_id,
meta={'request_time': timezone.localtime()},
result_ttl=ttl,
failure_ttl=ttl)
return Response(status=status.HTTP_202_ACCEPTED)