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Code Issues Releases Wiki Activity

Collection: fix stoken and add cstoken for the collection token.

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This commit is contained in:
Tom Hacohen 2020-05-19 15:33:10 +03:00
parent e851fb9877
commit b6571c93f6
3 changed files with 33 additions and 28 deletions
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4
django_etesync/models.py
View File

@ -46,6 +46,10 @@ class Collection(models.Model):
@cached_property
def stoken(self):
return self.main_item.stoken
@cached_property
def cstoken(self):
last_revision = CollectionItemRevision.objects.filter(item__collection=self).last()
if last_revision is None:
# FIXME: what is the etag for None? Though if we use the revision for collection it should be shared anyway.

3
django_etesync/serializers.py
View File

@ -169,12 +169,13 @@ class CollectionItemDepSerializer(serializers.ModelSerializer):
class CollectionSerializer(serializers.ModelSerializer):
encryptionKey = CollectionEncryptionKeyField()
accessLevel = serializers.SerializerMethodField('get_access_level_from_context')
cstoken = serializers.CharField(read_only=True)
stoken = serializers.CharField(allow_null=True)
content = CollectionItemRevisionSerializer(many=False)
class Meta:
model = models.Collection
fields = ('uid', 'version', 'accessLevel', 'encryptionKey', 'content', 'stoken')
fields = ('uid', 'version', 'accessLevel', 'encryptionKey', 'content', 'cstoken', 'stoken')
def get_access_level_from_context(self, obj):
request = self.context.get('request', None)

54
django_etesync/views.py
View File

@ -56,7 +56,7 @@ User = get_user_model()
class BaseViewSet(viewsets.ModelViewSet):
authentication_classes = tuple(app_settings.API_AUTHENTICATORS)
permission_classes = tuple(app_settings.API_PERMISSIONS)
stoken_id_field = None
cstoken_id_field = None
def get_serializer_class(self):
serializer_class = self.serializer_class
@ -70,32 +70,32 @@ class BaseViewSet(viewsets.ModelViewSet):
user = self.request.user
return queryset.filter(members__user=user)
def get_stoken_rev(self, request):
stoken = request.GET.get('stoken', None)
def get_cstoken_rev(self, request):
cstoken = request.GET.get('cstoken', None)
if stoken is not None:
return get_object_or_404(CollectionItemRevision.objects.all(), uid=stoken)
if cstoken is not None:
return get_object_or_404(CollectionItemRevision.objects.all(), uid=cstoken)
return None
def filter_by_stoken_and_limit(self, request, queryset):
def filter_by_cstoken_and_limit(self, request, queryset):
limit = int(request.GET.get('limit', 50))
stoken_id_field = self.stoken_id_field + '__id'
cstoken_id_field = self.cstoken_id_field + '__id'
stoken_rev = self.get_stoken_rev(request)
if stoken_rev is not None:
last_rev = get_object_or_404(CollectionItemRevision.objects.all(), uid=stoken_rev.uid)
filter_by = {stoken_id_field + '__gt': last_rev.id}
cstoken_rev = self.get_cstoken_rev(request)
if cstoken_rev is not None:
last_rev = get_object_or_404(CollectionItemRevision.objects.all(), uid=cstoken_rev.uid)
filter_by = {cstoken_id_field + '__gt': last_rev.id}
queryset = queryset.filter(**filter_by)
stoken = stoken_rev.uid
cstoken = cstoken_rev.uid
else:
stoken = None
cstoken = None
new_stoken_id = queryset.aggregate(stoken_id=Max(stoken_id_field))['stoken_id']
new_stoken = CollectionItemRevision.objects.get(id=new_stoken_id).uid if new_stoken_id is not None else stoken
new_cstoken_id = queryset.aggregate(cstoken_id=Max(cstoken_id_field))['cstoken_id']
new_cstoken = CollectionItemRevision.objects.get(id=new_cstoken_id).uid if new_cstoken_id is not None else cstoken
return queryset[:limit], new_stoken
return queryset[:limit], new_cstoken
class CollectionViewSet(BaseViewSet):
@ -104,7 +104,7 @@ class CollectionViewSet(BaseViewSet):
queryset = Collection.objects.all()
serializer_class = CollectionSerializer
lookup_field = 'uid'
stoken_id_field = 'items__revisions'
cstoken_id_field = 'items__revisions'
def get_queryset(self, queryset=None):
if queryset is None:
@ -139,14 +139,14 @@ class CollectionViewSet(BaseViewSet):
def list(self, request):
queryset = self.get_queryset()
queryset, new_stoken = self.filter_by_stoken_and_limit(request, queryset)
queryset, new_cstoken = self.filter_by_cstoken_and_limit(request, queryset)
serializer = self.serializer_class(queryset, context=self.get_serializer_context(), many=True)
ret = {
'data': serializer.data,
}
return Response(ret, headers={'X-EteSync-SToken': new_stoken})
return Response(ret, headers={'X-EteSync-SToken': new_cstoken})
class CollectionItemViewSet(BaseViewSet):
@ -155,7 +155,7 @@ class CollectionItemViewSet(BaseViewSet):
queryset = CollectionItem.objects.all()
serializer_class = CollectionItemSerializer
lookup_field = 'uid'
stoken_id_field = 'revisions'
cstoken_id_field = 'revisions'
def get_queryset(self):
collection_uid = self.kwargs['collection_uid']
@ -206,14 +206,14 @@ class CollectionItemViewSet(BaseViewSet):
def list(self, request, collection_uid=None):
queryset = self.get_queryset()
queryset, new_stoken = self.filter_by_stoken_and_limit(request, queryset)
queryset, new_cstoken = self.filter_by_cstoken_and_limit(request, queryset)
serializer = self.serializer_class(queryset, context=self.get_serializer_context(), many=True)
ret = {
'data': serializer.data,
}
return Response(ret, headers={'X-EteSync-SToken': new_stoken})
return Response(ret, headers={'X-EteSync-SToken': new_cstoken})
@action_decorator(detail=True, methods=['GET'])
def revision(self, request, collection_uid=None, uid=None):
@ -234,14 +234,14 @@ class CollectionItemViewSet(BaseViewSet):
if isinstance(request.data, list):
queryset = queryset.filter(uid__in=request.data)
queryset, new_stoken = self.filter_by_stoken_and_limit(request, queryset)
queryset, new_cstoken = self.filter_by_cstoken_and_limit(request, queryset)
serializer = self.get_serializer_class()(queryset, context=self.get_serializer_context(), many=True)
ret = {
'data': serializer.data,
}
return Response(ret, headers={'X-EteSync-SToken': new_stoken})
return Response(ret, headers={'X-EteSync-SToken': new_cstoken})
@action_decorator(detail=False, methods=['POST'])
def batch(self, request, collection_uid=None):
@ -250,11 +250,11 @@ class CollectionItemViewSet(BaseViewSet):
@action_decorator(detail=False, methods=['POST'])
def transaction(self, request, collection_uid=None):
stoken = request.GET.get('stoken', None)
cstoken = request.GET.get('cstoken', None)
collection_object = get_object_or_404(self.get_collection_queryset(Collection.objects), uid=collection_uid)
if stoken is not None and stoken != collection_object.stoken:
content = {'code': 'stale_stoken', 'detail': 'Stoken is too old'}
if cstoken is not None and cstoken != collection_object.cstoken:
content = {'code': 'stale_cstoken', 'detail': 'CSToken is too old'}
return Response(content, status=status.HTTP_400_BAD_REQUEST)
items = request.data.get('items')