def obj_delete(self, bundle, **kwargs):
obj = kwargs.pop('_obj', None)
if not getattr(obj, 'pk', None):
try:
obj = self.obj_get(bundle=bundle, **kwargs)
except (queryset.DoesNotExist, exceptions.ObjectDoesNotExist):
raise tastypie_exceptions.NotFound(
"A document instance matching the provided arguments could not be found."
)
object_list = getattr(self.instance, self.attribute)
pk_field = getattr(self._meta, 'id_field', None)
if pk_field is None:
object_list.pop(obj.pk)
else:
object_list.pop(
self.find_embedded_document(object_list, pk_field, obj.pk))
# Make sure to delete FileField files
for fieldname, field in obj._fields.items():
if isinstance(field, mongoengine_fields.FileField):
obj[fieldname].delete()
self.instance.save()
def obj_update(self, bundle, skip_errors=False, **kwargs):
try:
if not bundle.obj or not getattr(bundle.obj, 'pk', None):
try:
bundle.obj = self.obj_get(bundle=bundle, **kwargs)
except (queryset.DoesNotExist, exceptions.ObjectDoesNotExist):
raise tastypie_exceptions.NotFound(
"A document instance matching the provided arguments could not be found."
)
bundle = self.full_hydrate(bundle)
object_list = getattr(self.instance, self.attribute)
pk_field = getattr(self._meta, 'id_field', None)
if pk_field is None:
object_list[bundle.obj.pk] = bundle.obj
else:
object_list[self.find_embedded_document(
object_list, pk_field, bundle.obj.pk)] = bundle.obj
self.save_related(bundle)
self.instance.save()
m2m_bundle = self.hydrate_m2m(bundle)
self.save_m2m(m2m_bundle)
return bundle
except mongoengine.ValidationError as ex:
raise exceptions.ValidationError(ex.message)
def full_hydrate(self, bundle):
# When updating objects, we want to force only updates of the same type, and object
# should be completely replaced if type is changed, so we throw and exception here
# to direct program logic flow (it is cached and replace instead of update is tried)
if bundle.obj and self._meta.object_class is not bundle.obj.__class__:
raise tastypie_exceptions.NotFound(
"A document instance matching the provided arguments could not be found."
)
bundle = super(MongoEngineResource, self).full_hydrate(bundle)
# We redo check for required fields as Tastypie is not
# reliable as it does checks in an inconsistent way
# (https://github.com/toastdriven/django-tastypie/issues/491)
for field_object in self.fields.itervalues():
if field_object.readonly or getattr(field_object, '_primary_key',
False):
continue
if not field_object.attribute:
continue
# Tastypie also skips setting value if it is None, but this means
# updates to None are ignored: this is not good as it hides invalid
# PUT/PATCH REST requests (setting value to None which should fail
# validation (field required) is simply ignored and value is left
# as it is)
# (https://github.com/toastdriven/django-tastypie/issues/492)
# We hydrate field again only if existing value is not None
if getattr(bundle.obj, field_object.attribute, None) is not None:
value = NOT_HYDRATED
# Tastypie also ignores missing fields in PUT,
# so we check for missing field here
# (https://github.com/toastdriven/django-tastypie/issues/496)
if field_object.instance_name not in bundle.data:
if field_object.has_default():
if callable(field_object.default):
value = field_object.default()
else:
value = field_object.default
else:
value = None
else:
value = field_object.hydrate(bundle)
if value is None:
setattr(bundle.obj, field_object.attribute, None)
if field_object.blank or field_object.null:
continue
# We are just trying to fix Tastypie here, for other "null" values
# like [] and {} we leave to MongoEngine validate to catch them
if getattr(bundle.obj, field_object.attribute, None) is None:
raise tastypie_exceptions.ApiFieldError(
"The '%s' field has no data and doesn't allow a default or null value."
% field_object.instance_name)
return bundle
def obj_delete(self, bundle, store, **kwargs):
with git_checkpoint(store, "Completing Task"):
try:
store.log_message("Task %s completed.", kwargs['pk'])
store.client.task_done(uuid=kwargs['pk'])
return bundle
except ValueError:
raise exceptions.NotFound()
def obj_delete(self, bundle, **kwargs):
self._reset_collection()
# MongoEngine exceptions are separate from Django exceptions and Tastypie
# expects Django exceptions, so we catch it here ourselves and raise NotFound
try:
return super(MongoEngineResource, self).obj_delete(bundle, **kwargs)
except queryset.DoesNotExist:
raise tastypie_exceptions.NotFound("A document instance matching the provided arguments could not be found.")
def stop_task(self, request, uuid, store, **kwargs):
if not request.method == 'POST':
return HttpResponseNotAllowed(request.method)
try:
store.client.task_stop(uuid=uuid)
except ValueError:
raise exceptions.NotFound()
store.log_message("Task %s stopped.", uuid)
return HttpResponse(
status=200
)
def obj_update(self, bundle, skip_errors=False, **kwargs):
self._reset_collection()
if not bundle.obj or not getattr(bundle.obj, 'pk', None):
try:
bundle.obj = self.obj_get(bundle=bundle, **kwargs)
except (queryset.DoesNotExist, exceptions.ObjectDoesNotExist):
raise tastypie_exceptions.NotFound("A document instance matching the provided arguments could not be found.")
self.authorized_update_detail(self.get_object_list(bundle.request), bundle)
bundle = self.full_hydrate(bundle)
return self.save(bundle, skip_errors=skip_errors)
def stop_task(self, request, uuid, store, **kwargs):
if not request.method == 'POST':
return HttpResponseNotAllowed(request.method)
try:
store.client.task_stop(uuid=uuid)
except ValueError:
raise exceptions.NotFound()
store.log_message("Task %s stopped.", uuid)
return HttpResponse(
json.dumps({
'message': 'OK',
}),
content_type='application/json',
)
def obj_get(self, bundle, store, **kwargs):
task = store.client.get_task(uuid=kwargs['pk'])[1]
if not task:
repository_head = store.repository.head()
logger.warning(
'Unable to find task with ID %s in repository %s at %s',
kwargs['pk'],
store.local_path,
repository_head,
extra={
'data': {
'store': store,
'local_path': store.local_path,
'pk': kwargs['pk'],
'head': repository_head
}
})
raise exceptions.NotFound()
return Task(task, store=store)
def obj_update(self, bundle, request=None, **kwargs):
self._reset_collection()
if not bundle.obj or not getattr(bundle.obj, 'pk', None):
try:
bundle.obj = self.obj_get(request, **kwargs)
except (queryset.DoesNotExist, exceptions.ObjectDoesNotExist):
raise tastypie_exceptions.NotFound(
"A document instance matching the provided arguments could not be found."
)
bundle = self.full_hydrate(bundle)
self.save_related(bundle)
bundle.obj.save()
m2m_bundle = self.hydrate_m2m(bundle)
self.save_m2m(m2m_bundle)
return bundle
def obj_get(self, bundle, **kwargs):
try:
stream = datastream.Stream(datastream.get_tags(kwargs['pk']))
except datastream_exceptions.StreamNotFound:
raise exceptions.NotFound("Stream '%s' not found." % kwargs['pk'])
params = self._get_query_params(bundle.request, stream)
stream.datapoints = datastream.get_data(
stream_id=stream.id,
granularity=params['granularity'],
start=params['start'],
end=params['end'],
start_exclusive=params['start_exclusive'],
end_exclusive=params['end_exclusive'],
reverse=params['reverse'],
value_downsamplers=params['value_downsamplers'],
time_downsamplers=params['time_downsamplers'],
)
return stream
def obj_update(self, bundle, store, **kwargs):
with git_checkpoint(store, "Updating Task", sync=True):
if bundle.data['uuid'] != kwargs['pk']:
raise exceptions.BadRequest(
"Changing the UUID of an existing task is not possible.")
elif not bundle.data['description']:
raise exceptions.BadRequest(
"You must specify a description for each task.")
original = store.client.get_task(uuid=kwargs['pk'])[1]
if not original:
raise exceptions.NotFound()
bundle.obj = self.get_empty_task(bundle.request)
bundle = self.full_hydrate(bundle)
data = bundle.obj.get_json()
for k in json.loads(bundle.request.body).keys():
v = data.get(k)
if ((k in original.FIELDS and original.FIELDS[k].read_only)
or k in self.SYNTHETIC_FIELDS):
continue
original[k] = v
changes = original.get_changes(keep=True)
store.client.task_update(original)
store.log_message(
"Task %s updated: %s.",
kwargs['pk'],
changes,
)
bundle.obj = Task(
store.client.get_task(uuid=kwargs['pk'])[1],
store=store,
)
return bundle
def obj_get(self, bundle, store, **kwargs):
try:
return Task(store.client.get_task(uuid=kwargs['pk'])[1])
except ValueError:
raise exceptions.NotFound()
def full_hydrate(self, bundle):
# When updating objects, we want to force only updates of the same type, and object
# should be completely replaced if type is changed, so we throw and exception here
# to direct program logic flow (it is cached and replace instead of update is tried)
if bundle.obj and self._meta.object_class is not bundle.obj.__class__:
raise tastypie_exceptions.NotFound(
"A document instance matching the provided arguments could not be found."
)
bundle = super(MongoEngineResource, self).full_hydrate(bundle)
# We redo check for required fields as Tastypie is not
# reliable as it does checks in an inconsistent way
# (https://github.com/toastdriven/django-tastypie/issues/491)
for field_object in self.fields.itervalues():
if field_object.readonly:
continue
if not field_object.attribute:
continue
value = NOT_HYDRATED
# Tastypie also skips setting value if it is None, but this means
# updates to None are ignored: this is not good as it hides invalid
# PUT/PATCH REST requests (setting value to None which should fail
# validation (field required) is simply ignored and value is left
# as it is)
# (https://github.com/toastdriven/django-tastypie/issues/492)
# We hydrate field again only if existing value is not None
if getattr(bundle.obj, field_object.attribute, None) is not None:
# Tastypie also ignores missing fields in PUT,
# so we check for missing field here
# (https://github.com/toastdriven/django-tastypie/issues/496)
if field_object.instance_name not in bundle.data:
if field_object._default is not tastypie_fields.NOT_PROVIDED:
if callable(field_object.default):
value = field_object.default()
else:
value = field_object.default
else:
value = None
else:
value = field_object.hydrate(bundle)
if value is None:
# This does not really set None in a way that calling
# getattr on bundle.obj would return None later on
# This is how MongoEngine is implemented
# (https://github.com/hmarr/mongoengine/issues/505)
setattr(bundle.obj, field_object.attribute, None)
if field_object.blank or field_object.null:
continue
# We are just trying to fix Tastypie here, for other "null" values
# like [] and {} we leave to validate bellow to catch them
if getattr(
bundle.obj, field_object.attribute, None
) is None or value is None: # We also have to check value, read comment above
raise tastypie_exceptions.ApiFieldError(
"The '%s' field has no data and doesn't allow a default or null value."
% field_object.instance_name)
# We validate MongoEngine object here so that possible exception
# is thrown before going to MongoEngine layer, wrapped in
# Django exception so that it is handled properly
# is_valid method is too early as bundle.obj is not yet ready then
try:
# Validation fails for unsaved related resources, so
# we fake pk here temporary, for validation code to
# assume resource is saved
pk = getattr(bundle.obj, 'pk', None)
try:
if pk is None:
bundle.obj.pk = bson.ObjectId()
bundle.obj.validate()
finally:
if pk is None:
bundle.obj.pk = pk
except mongoengine.ValidationError, e:
raise exceptions.ValidationError(e.message)
