Merge "Prevent replacement of Port, Net and Subnet"

undercloud_heat_plugins/immutable_resources.py

@@ -0,0 +1,62 @@
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import copy
+
+import six
+
+from heat.engine.resources.openstack.neutron import net
+from heat.engine.resources.openstack.neutron import port
+from heat.engine.resources.openstack.neutron import subnet
+
+
+def _copy_schema_immutable(schema):
+    new_schema = copy.deepcopy(schema)
+    if not schema.update_allowed:
+        new_schema.immutable = True
+    return new_schema
+
+
+class ImmutableNet(net.Net):
+    '''Ensure an existing net doesn't change.'''
+
+    properties_schema = {
+        k: _copy_schema_immutable(v)
+        for k, v in six.iteritems(net.Net.properties_schema)
+    }
+
+
+class ImmutablePort(port.Port):
+    '''Ensure an existing port doesn't change.'''
+
+    properties_schema = {
+        k: _copy_schema_immutable(v)
+        for k, v in six.iteritems(port.Port.properties_schema)
+    }
+
+
+class ImmutableSubnet(subnet.Subnet):
+    '''Ensure an existing subnet doesn't change.'''
+
+    properties_schema = {
+        k: _copy_schema_immutable(v)
+        for k, v in six.iteritems(subnet.Subnet.properties_schema)
+    }
+
+
+def resource_mapping():
+    return {
+        'OS::Neutron::Net': ImmutableNet,
+        'OS::Neutron::Port': ImmutablePort,
+        'OS::Neutron::Subnet': ImmutableSubnet,
+    }