Adds a clear error message when uploading an old descriptor

Change-Id: Id600b558858f45001adad1bf6a4eb5f3bb28ff14
Signed-off-by: garciaale <agarcia@whitestack.com>
diff --git a/osm_nbi/descriptor_topics.py b/osm_nbi/descriptor_topics.py
index 4e056f5..26aea63 100644
--- a/osm_nbi/descriptor_topics.py
+++ b/osm_nbi/descriptor_topics.py
@@ -456,6 +456,9 @@
         DescriptorTopic.__init__(self, db, fs, msg, auth)
 
     def pyangbind_validation(self, item, data, force=False):
+        if self._descriptor_data_is_in_old_format(data):
+            raise EngineException("ERROR: Unsupported descriptor format. Please, use an ETSI SOL006 descriptor.",
+                                  http_code=HTTPStatus.UNPROCESSABLE_ENTITY)
         try:
             virtual_compute_descriptors = data.get('virtual-compute-desc')
             virtual_storage_descriptors = data.get('virtual-storage-desc')
@@ -475,6 +478,10 @@
                                   http_code=HTTPStatus.UNPROCESSABLE_ENTITY)
 
     @staticmethod
+    def _descriptor_data_is_in_old_format(data):
+        return ('vnfd-catalog' in data) or ('vnfd:vnfd-catalog' in data)
+
+    @staticmethod
     def _remove_envelop(indata=None):
         if not indata:
             return {}
@@ -797,6 +804,9 @@
         DescriptorTopic.__init__(self, db, fs, msg, auth)
 
     def pyangbind_validation(self, item, data, force=False):
+        if self._descriptor_data_is_in_old_format(data):
+            raise EngineException("ERROR: Unsupported descriptor format. Please, use an ETSI SOL006 descriptor.",
+                                  http_code=HTTPStatus.UNPROCESSABLE_ENTITY)
         try:
             mynsd = etsi_nfv_nsd.etsi_nfv_nsd()
             pybindJSONDecoder.load_ietf_json({'nsd': {'nsd': [data]}}, None, None, obj=mynsd,
@@ -810,6 +820,10 @@
                                   http_code=HTTPStatus.UNPROCESSABLE_ENTITY)
 
     @staticmethod
+    def _descriptor_data_is_in_old_format(data):
+        return ('nsd-catalog' in data) or ('nsd:nsd-catalog' in data)
+
+    @staticmethod
     def _remove_envelop(indata=None):
         if not indata:
             return {}