commit 6f6883711db95a7b1ed95b2688f9a67436fb6fad
Author: Liam Young <liam.young@canonical.com>
Date:   Tue Jun 26 09:49:31 2018 +0000

    Initial commit

diff --git a/__init__.py b/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/interface.yaml b/interface.yaml
new file mode 100644
index 0000000..105b5b4
--- /dev/null
+++ b/interface.yaml
@@ -0,0 +1,4 @@
+name: nova-cell
+summary: Compute Controller <-> API Controller interface
+version: 1
+maintainer: "<openstack-charmers@lists.ubuntu.com>"
diff --git a/provides.py b/provides.py
new file mode 100644
index 0000000..911140f
--- /dev/null
+++ b/provides.py
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+# 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 charms.reactive import set_flag, clear_flag
+from charms.reactive import Endpoint
+from charms.reactive import when_any, when_not, when
+
+
+class CellProvides(Endpoint):
+
+    @when_not('endpoint.{endpoint_name}.joined')
+    def broken(self):
+        clear_flag(self.expand_name('endpoint.{endpoint_name}.new-request'))
+        clear_flag(self.expand_name('{endpoint_name}.connected'))
+
+    @when('endpoint.{endpoint_name}.joined')
+    def joined(self):
+        print("CellProvides")
+        set_flag(self.expand_name('{endpoint_name}.connected'))
+
diff --git a/requires.py b/requires.py
new file mode 100644
index 0000000..a1a9838
--- /dev/null
+++ b/requires.py
@@ -0,0 +1,68 @@
+# 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 socket
+from urllib.parse import urlparse
+import uuid
+
+from charmhelpers.core import hookenv
+
+from charms.reactive import set_flag, clear_flag
+from charms.reactive import Endpoint
+from charms.reactive import when_any, when_not, when
+
+
+class CellRequires(Endpoint):
+
+    @when('endpoint.{endpoint_name}.changed')
+    def data_changed(self):
+        if self.all_joined_units.received.get('network_manager'):
+            set_flag(self.expand_name('{endpoint_name}.available'))
+
+    @when_not('endpoint.{endpoint_name}.joined')
+    def broken(self):
+        clear_flag(self.expand_name('{endpoint_name}.available'))
+
+    @when('endpoint.{endpoint_name}.joined')
+    def joined(self):
+        print("CellRequires")
+        set_flag(self.expand_name('{endpoint_name}.connected'))
+
+    def send_cell_data(self, cell_name, amqp_svc_name, db_svc_name):
+        for relation in self.relations:
+            relation.to_publish_raw['amqp-service'] = amqp_svc_name
+            relation.to_publish_raw['db-service'] = db_svc_name
+            relation.to_publish_raw['cell-name'] = cell_name
+
+    def get_settings(self, keys):
+        settings = {}
+        for key in keys:
+            settings[key] = self.all_joined_units.received.get(key)
+        return settings
+
+    def get_console_data(self):
+        return self.get_settings(
+            ['enable_serial_console', 'serial_console_base_url'])
+
+    def get_network_data(self):
+        return self.get_settings(
+            ['network_manager', 'quantum_plugin', 'quantum_security_groups',
+             'quantum_url'])
+
+    def get_region(self):
+        return self.get_settings(['region'])
+
+    def get_volume_data(self):
+        return self.get_settings(['volume_service'])
+
+    def get_ec2_data(self):
+        return self.get_settings(['ec2_host'])