Check for multi level tlds

Previously we only checked for the last label of a TLD
which does not work for `co.uk` or custom internal
TLDs that deployers may use

Change-Id: I9bc8d3ac8eb48078723a96d87e023d58b933b183

designate/central/service.py

@@ -275,12 +275,17 @@ class Service(service.RPCService, service.Service):
             raise exceptions.InvalidZoneName('More than one label is '
                                              'required')
 
-        # Check the TLD for validity if there are entries in the database
-        if self.storage.find_tlds({}):
-            LOG.info(_LI("Checking for TLDs"))
-            try:
-                self.storage.find_tld(context, {'name': zone_labels[-1]})
-            except exceptions.TldNotFound:
+        tlds = self.storage.find_tlds(context)
+        if tlds:
+            LOG.debug("Checking if %s has a valid TLD", zone_name)
+            allowed = False
+            for i in range(-len(zone_labels), 0):
+                last_i_labels = zone_labels[i:]
+                LOG.debug("Checking %s against the TLD list", last_i_labels)
+                if ".".join(last_i_labels) in tlds:
+                    allowed = True
+                    break
+            if not allowed:
                 raise exceptions.InvalidZoneName('Invalid TLD')
 
             # Now check that the zone name is not the same as a TLD
@@ -290,7 +295,7 @@ class Service(service.RPCService, service.Service):
                     context,
                     {'name': stripped_zone_name})
             except exceptions.TldNotFound:
-                pass
+                LOG.debug("%s has a valid TLD", zone_name)
             else:
                 raise exceptions.InvalidZoneName(
                     'Zone name cannot be the same as a TLD')

designate/manage/tlds.py

@@ -59,6 +59,8 @@ class TLDCommands(base.Commands):
 
     def __init__(self):
         super(TLDCommands, self).__init__()
+
+    def _startup(self):
         rpc.init(cfg.CONF)
         self.central_api = central_rpcapi.CentralAPI()
 
@@ -108,6 +110,7 @@ class TLDCommands(base.Commands):
                help="delimiter between fields in the input file",
                default=',', type=str)
     def from_file(self, input_file=None, delimiter=None):
+        self._startup()
         input_file = str(input_file) if input_file is not None else None
 
         if not os.path.exists(input_file):

designate/objects/tld.py

@@ -42,3 +42,6 @@ class Tld(base.DictObjectMixin, base.PersistentObjectMixin,
 
 class TldList(base.ListObjectMixin, base.DesignateObject):
     LIST_ITEM_TYPE = Tld
+
+    def __contains__(self, key):
+        return bool(list(filter(lambda tld: tld.name == key, self.objects)))

designate/tests/unit/test_central/test_basic.py

@@ -515,6 +515,12 @@ class CentralZoneTestCase(CentralBasic):
             if d['name'] not in ('org',):
                 raise exceptions.TldNotFound
 
+        def storage_find_tlds(c):
+            return objects.TldList.from_list(
+                [objects.Tld.from_dict({'name': 'org'})]
+            )
+
+        self.service.storage.find_tlds = storage_find_tlds
         self.service.storage.find_tld = storage_find_tld
 
     def test__is_valid_zone_name_valid(self):

releasenotes/notes/multilevel-tlds-3dadd285fed82715.yaml

@@ -0,0 +1,8 @@
+---
+fixes:
+  - |
+    Check for multi level tlds
+
+    Previously we only checked for the last label of a TLD
+    which does not work for `co.uk` or custom internal
+    TLDs that deployers may use