Add designate support for Zone choice

This commit adds support for Designate zones. This can be used to
provide the user a drop down list of zones they can choose from when
launching apps.

This should be coupled with a commit to murano to add a new
io.murano.resources.RecordSet resource type, so that new a new DNS
record can be added for new apps.

Change-Id: I71deb3e264b2777ec4126d8e46c3ac45b9fc42c6

muranodashboard/common/designate.py

@@ -0,0 +1,39 @@
+# Copyright 2013 Hewlett-Packard Development Company, L.P.
+#
+# 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.
+
+from designateclient import client
+
+from keystoneauth1 import loading
+from keystoneauth1 import session
+
+from openstack_dashboard.api import base
+
+
+def designateclient(request, api_version='2'):
+    loader = loading.get_plugin_loader('token')
+    auth = loader.load_from_options(
+        auth_url=base.url_for(request, 'identity'),
+        token=request.user.token.id,
+        project_id=request.user.project_id,
+        project_domain_id=request.user.token.project.get('domain_id'))
+
+    sess = session.Session(auth=auth)
+    return client.Client(api_version, session=sess)
+
+
+def zone_list(request):
+    d_client = designateclient(request)
+    if d_client is None:
+        return []
+    return d_client.zones.list()

muranodashboard/dynamic_ui/fields.py

@@ -40,6 +40,7 @@ from oslo_log import versionutils
 from yaql import legacy
 
 from muranodashboard.api import packages as pkg_api
+from muranodashboard.common import designate
 from muranodashboard.common import net
 from muranodashboard.dynamic_ui import helpers
 from muranodashboard.environments import api as env_api
@@ -780,3 +781,25 @@ class DomainChoiceField(make_select_cls('io.murano.windows.ActiveDirectory')):
     def __init__(self, *args, **kwargs):
         super(DomainChoiceField, self).__init__(*args, **kwargs)
         self.choices = [('', _('Not in domain'))]
+
+
+class ZoneChoiceField(ChoiceField):
+    @with_request
+    def update(self, request, form=None, **kwargs):
+        try:
+            zones = designate.zone_list(request)
+        except Exception:
+            zones = []
+            exceptions.handle(request, _("Unable to retrieve DNS zones."))
+
+        # Use zone name instead of ID purely for convenience of being able to
+        # pass it through to construct fqdn for apps
+        zone_choices = [(z['name'], z['name']) for z in zones]
+        zone_choices.sort(key=lambda e: e[1])
+
+        if zones:
+            zone_choices.insert(0, ('', _('No DNS zone')))
+        else:
+            zone_choices.insert(0, ('', _('No DNS zones available')))
+
+        self.choices = zone_choices

muranodashboard/dynamic_ui/forms.py

@@ -51,7 +51,8 @@ TYPES.update({
     'choice': fields.ChoiceField,
     'floatingip': fields.FloatingIpBooleanField,
     'securitygroup': fields.SecurityGroupChoiceField,
-    'volume': fields.VolumeChoiceField
+    'volume': fields.VolumeChoiceField,
+    'zone': fields.ZoneChoiceField,
 })
 
 

releasenotes/notes/add-designate-support-44d8e9f9ce7b8574.yaml

@@ -0,0 +1,3 @@
+---
+features:
+  - Add Desginate support for listing available zones

requirements.txt

@@ -10,6 +10,7 @@ beautifulsoup4>=4.6.0 # MIT
 django-formtools>=2.2 # BSD
 iso8601>=0.1.11 # MIT
 python-muranoclient>=0.8.2 # Apache-2.0
+python-designateclient>=2.7.0 # Apache-2.0
 pytz>=2013.6 # MIT
 PyYAML>=3.12 # MIT
 yaql>=1.1.3 # Apache 2.0 License