Add action for applying local settings

Add action to apply snap setting specific to the local unit.

Change-Id: I6ab63de753046c07934a6f923206ff5179599e39

charms/openstack-hypervisor/actions.yaml

@@ -0,0 +1,15 @@
+set-hypervisor-local-settings:
+  description: |
+    Apply settings specific to this hypervisor unit
+  params:
+    external-nic:
+      type: string
+      description: NIC that hypervisor will configure for North/South traffic
+    spice-proxy-address:
+      type: string
+      description: IP address to use for configuration of SPICE consoles in instances.
+    ip-address:
+      type: string
+      description: IP address to use for service configuration
+  additionalProperties: false
+

charms/openstack-hypervisor/config.yaml

@@ -20,9 +20,6 @@ options:
   external-bridge-address:
     default: "10.20.20.1/24"
     type: string
-  ip-address:
-    default:
-    type: string
   physnet-name:
     default: "physnet1"
     type: string

charms/openstack-hypervisor/src/charm.py

@@ -36,6 +36,7 @@ import ops_sunbeam.guard as sunbeam_guard
 import ops_sunbeam.ovn.relation_handlers as ovn_relation_handlers
 import ops_sunbeam.relation_handlers as sunbeam_rhandlers
 from netifaces import AF_INET, gateways, ifaddresses
+from ops.charm import ActionEvent
 from ops.main import main
 
 logger = logging.getLogger(__name__)
@@ -69,6 +70,10 @@ class HypervisorOperatorCharm(sunbeam_charm.OSBaseOperatorCharm):
         """Run constructor."""
         super().__init__(framework)
         self._state.set_default(metadata_secret="")
+        self.framework.observe(
+            self.on.set_hypervisor_local_settings_action,
+            self._set_hypervisor_local_settings_action,
+        )
 
     def get_relation_handlers(
         self, handlers: List[sunbeam_rhandlers.RelationHandler] = None
@@ -86,6 +91,21 @@ class HypervisorOperatorCharm(sunbeam_charm.OSBaseOperatorCharm):
         handlers = super().get_relation_handlers(handlers)
         return handlers
 
+    def _set_hypervisor_local_settings_action(self, event: ActionEvent):
+        """Run set_hypervisor_local_settings action."""
+        local_settings = [
+            "network.external-nic",
+            "compute.spice-proxy-address",
+            "network.ip-address",
+        ]
+        new_snap_settings = {}
+        for setting in local_settings:
+            action_param = setting.split(".")[1]
+            if event.params.get(action_param):
+                new_snap_settings[setting] = event.params.get(action_param)
+        if new_snap_settings:
+            self.set_snap_data(new_snap_settings)
+
     def ensure_services_running(self):
         """Ensure systemd services running."""
         # This should taken care of by the snap
@@ -121,11 +141,8 @@ class HypervisorOperatorCharm(sunbeam_charm.OSBaseOperatorCharm):
             self._state.metadata_secret = secret
             return secret
 
-    def set_snap_data(self, snap_data):
-        """Set snap setting if needed.
-
-        Update the snap with any settings that have changed.
-        """
+    def set_snap_data(self, snap_data: dict):
+        """Set snap data on local snap."""
         cache = snap.SnapCache()
         hypervisor = cache["openstack-hypervisor"]
         new_settings = {}
@@ -195,7 +212,7 @@ class HypervisorOperatorCharm(sunbeam_charm.OSBaseOperatorCharm):
                 ).decode(),
                 "network.ovn-sb-connection": sb_connection_strs[0],
                 "network.physnet-name": config("physnet-name"),
-                "node.fqdn": config("fqdn") or socket.getfqdn(),
+                "node.fqdn": socket.getfqdn(),
                 "node.ip-address": config("ip-address") or local_ip,
                 "rabbitmq.url": contexts.amqp.transport_url,
             }

charms/openstack-hypervisor/tests/actions.yaml

@@ -0,0 +1 @@
+../actions.yaml

charms/openstack-hypervisor/tests/unit/test_charm.py

@@ -33,7 +33,7 @@ class _HypervisorOperatorCharm(charm.HypervisorOperatorCharm):
 
 
 class TestCharm(test_utils.CharmTestCase):
-    PATCHES = ["socket", "snap"]
+    PATCHES = ["socket", "snap", "_get_local_ip_by_default_route"]
 
     def setUp(self):
         """Setup OpenStack Hypervisor tests."""
@@ -50,7 +50,7 @@ class TestCharm(test_utils.CharmTestCase):
     def initial_setup(self):
         rel_id = self.harness.add_relation("certificates", "vault")
         self.harness.add_relation_unit(rel_id, "vault/0")
-        self.harness.update_config({"snap-channel": "essex/stable", "ip-address": "10.0.0.10"})
+        self.harness.update_config({"snap-channel": "essex/stable"})
         self.harness.begin_with_initial_hooks()
         csr = {"certificate_signing_request": test_utils.TEST_CSR}
         self.harness.update_relation_data(
@@ -79,6 +79,7 @@ class TestCharm(test_utils.CharmTestCase):
 
     def test_all_relations(self):
         """Test all the charms relations."""
+        self._get_local_ip_by_default_route.return_value = "10.0.0.10"
         hypervisor_snap_mock = mock.MagicMock()
         hypervisor_snap_mock.present = False
         self.snap.SnapState.Latest = "latest"