[ACORD-18] CORD 3.0 integration for monitoring service
Adding the new files
-Updating models 
-Fixing synchronizer

Change-Id: I148e06d421a42acdeb8366a7816d0589f8a39e54
diff --git a/xos/attic/sflowtenant_model.py b/xos/attic/sflowtenant_model.py
new file mode 100644
index 0000000..7dfefe7
--- /dev/null
+++ b/xos/attic/sflowtenant_model.py
@@ -0,0 +1,72 @@
+sync_attributes = ("listening_endpoint", )
+
+default_attributes = {}
+def __init__(self, *args, **kwargs):
+    sflow_services = SFlowService.get_service_objects().all()
+    if sflow_services:
+        self._meta.get_field("provider_service").default = sflow_services[0].id
+    super(SFlowTenant, self).__init__(*args, **kwargs)
+
+@property
+def creator(self):
+    from core.models import User
+    if getattr(self, "cached_creator", None):
+        return self.cached_creator
+    creator_id=self.get_attribute("creator_id")
+    if not creator_id:
+        return None
+    users=User.objects.filter(id=creator_id)
+    if not users:
+        return None
+    user=users[0]
+    self.cached_creator = users[0]
+    return user
+
+@creator.setter
+def creator(self, value):
+    if value:
+        value = value.id
+    if (value != self.get_attribute("creator_id", None)):
+        self.cached_creator=None
+    self.set_attribute("creator_id", value)
+
+@property
+def listening_endpoint(self):
+    return self.get_attribute("listening_endpoint", None)
+
+@listening_endpoint.setter
+def listening_endpoint(self, value):
+    if urlparse(value).scheme != 'udp':
+        raise XOSProgrammingError("SFlowTenant: Only UDP listening endpoint URLs are accepted...valid syntax is: udp://ip:port")
+    self.set_attribute("listening_endpoint", value)
+
+def save(self, *args, **kwargs):
+    if not self.creator:
+        if not getattr(self, "caller", None):
+            # caller must be set when creating a SFlow tenant since it creates a slice
+            raise XOSProgrammingError("SFlowTenant's self.caller was not set")
+        self.creator = self.caller
+        if not self.creator:
+            raise XOSProgrammingError("SFlowTenant's self.creator was not set")
+
+    if not self.listening_endpoint:
+        raise XOSProgrammingError("SFlowTenant's self.listening_endpoint was not set")
+
+    if self.pk is None:
+        #Allow only one sflow channel per user and listening_endpoint
+        channel_count = sum ( [1 for channel in SFlowTenant.get_tenant_objects().all() if ((channel.creator == self.creator) and (channel.listening_endpoint == self.listening_endpoint))] )
+        if channel_count > 0:
+            raise XOSValidationError("Already %s sflow channels exist for user Can only create max 1 tenant per user and listening endpoint" % str(channel_count))
+
+    super(SFlowTenant, self).save(*args, **kwargs)
+
+def delete(self, *args, **kwargs):
+    super(MonitoringChannel, self).delete(*args, **kwargs)
+
+@property
+def authorized_resource_list(self):
+    return ['all']
+
+@property
+def authorized_resource_list_str(self):
+    return ", ".join(self.authorized_resource_list)