planetstack/core/xoslib/methods/sliceplus.py

   1 from rest_framework.decorators import api_view
   2 from rest_framework.response import Response\r
   3 from rest_framework.reverse import reverse\r
   4 from rest_framework import serializers\r
   5 from rest_framework import generics\r
   6 from core.models import *\r
   7 from django.forms import widgets
   8 from core.xoslib.objects.sliceplus import SlicePlus
   9 from plus import PlusSerializerMixin, PlusRetrieveUpdateDestroyAPIView, PlusListCreateAPIView
  10
  11 if hasattr(serializers, "ReadOnlyField"):
  12     # rest_framework 3.x
  13     IdField = serializers.ReadOnlyField
  14 else:
  15     # rest_framework 2.x
  16     IdField = serializers.Field
  17
  18 class NetworkPortsField(serializers.WritableField):   # note: maybe just Field in rest_framework 3.x instead of WritableField
  19     def to_representation(self, obj):
  20         return obj
  21
  22     def to_internal_value(self, data):
  23         return data
  24
  25 class DictionaryField(serializers.WritableField):   # note: maybe just Field in rest_framework 3.x instead of WritableField
  26     def to_representation(self, obj):
  27         return json.dumps(obj)
  28
  29     def to_internal_value(self, data):
  30         return json.loads(data)
  31
  32 class ListField(serializers.WritableField):   # note: maybe just Field in rest_framework 3.x instead of WritableField
  33     def to_representation(self, obj):
  34         return json.dumps(obj)
  35
  36     def to_internal_value(self, data):
  37         return json.loads(data)
  38
  39 class SlicePlusIdSerializer(serializers.ModelSerializer, PlusSerializerMixin):
  40         id = IdField()
  41 \r
  42         sliceInfo = serializers.SerializerMethodField("getSliceInfo")\r
  43         humanReadableName = serializers.SerializerMethodField("getHumanReadableName")\r
  44         network_ports = NetworkPortsField(required=False)\r
  45         site_allocation = DictionaryField(required=False)\r
  46         users = ListField(required=False)\r
  47         user_names = ListField(required=False) # readonly = True ?\r
  48         current_user_can_see = serializers.SerializerMethodField("getCurrentUserCanSee")\r
  49 \r
  50         def getCurrentUserCanSee(self, slice):\r
  51             # user can 'see' the slice if he is the creator or he has a role\r
  52             current_user = self.context['request'].user\r
  53             if (slice.creator and slice.creator==current_user):\r
  54                 return True;\r
  55             return (len(slice.getSliceInfo(current_user)["roles"]) > 0)\r
  56 \r
  57         def getSliceInfo(self, slice):\r
  58             return slice.getSliceInfo(user=self.context['request'].user)\r
  59 \r
  60         def getHumanReadableName(self, obj):\r
  61             return str(obj)\r
  62 \r
  63         networks = serializers.PrimaryKeyRelatedField(many=True, read_only=True)\r
  64 \r
  65         class Meta:\r
  66             model = SlicePlus\r
  67             fields = ('humanReadableName', 'id','created','updated','enacted','name','enabled','omf_friendly','description','slice_url','site','max_slivers','service','network','mount_data_sets',
  68                       'default_image', 'default_flavor',
  69                       'serviceClass','creator','networks','sliceInfo','network_ports','backendIcon','backendHtml','site_allocation','users',"user_names","current_user_can_see")
  70
  71 class SlicePlusList(PlusListCreateAPIView):
  72     queryset = SlicePlus.objects.select_related().all()
  73     serializer_class = SlicePlusIdSerializer
  74
  75     method_kind = "list"
  76     method_name = "slicesplus"
  77
  78     def get_queryset(self):
  79         current_user_can_see = self.request.QUERY_PARAMS.get('current_user_can_see', False)
  80
  81         slices = SlicePlus.select_by_user(self.request.user)
  82
  83         # If current_user_can_see is set, then filter the queryset to return
  84         # only those slices that the user is either creator or has privilege
  85         # on.
  86         if (current_user_can_see):
  87             slice_ids = []
  88             for slice in slices:
  89                 if (self.request.user == slice.creator) or (len(slice.getSliceInfo(self.request.user)["roles"]) > 0):
  90                     slice_ids.append(slice.id)
  91
  92             slices = SlicePlus.objects.filter(id__in=slice_ids)
  93
  94         return slices
  95
  96 class SlicePlusDetail(PlusRetrieveUpdateDestroyAPIView):
  97     queryset = SlicePlus.objects.select_related().all()
  98     serializer_class = SlicePlusIdSerializer
  99
 100     method_kind = "detail"
 101     method_name = "slicesplus"
 102
 103     def get_queryset(self):
 104         return SlicePlus.select_by_user(self.request.user)
 105
 106     def update(self, request, *args, **kwargs):
 107         obj = self.get_object()
 108         if obj.can_update(request.user):
 109             return super(SlicePlusDetail, self).update(request, *args, **kwargs)
 110         else:
 111             return Response(status=status.HTTP_400_BAD_REQUEST)
 112
 113     def destroy(self, request, *args, **kwargs):
 114         obj = self.get_object()
 115         if obj.can_update(request.user):
 116             return super(SlicePlusDetail, self).destroy(request, *args, **kwargs)
 117         else:
 118             return Response(status=status.HTTP_400_BAD_REQUEST)