Set nodes' statuses to 'error' when their nodegroup is deleted

According to the bug below and the spec, we did not implement
one multirack feature aspect.

https://specs.openstack.org/openstack/fuel-specs/specs/8.0/multi-rack-static.html#notifications-impact

Now we add resetting node to error to node group deletion callback and
send a notification.

Change-Id: I6b2bae5601ba7dbca620bb3861e95b0e554f8699
Closes-bug: #1644630

3 files changed, 52 insertions, 3 deletions

diff --git a/nailgun/nailgun/extensions/network_manager/extension.py b/nailgun/nailgun/extensions/network_manager/extension.py
index 2db6dda..502b27f 100644
--- a/nailgun/nailgun/extensions/network_manager/extension.py
+++ b/nailgun/nailgun/extensions/network_manager/extension.py
@@ -182,6 +182,18 @@ class NetworkManagerExtension(BaseExtension):
 
     @classmethod
     def on_nodegroup_delete(cls, ng):
+        netmanager = objects.Cluster.get_network_manager(ng.cluster)
+        default_admin_net = objects.NetworkGroup.get_default_admin_network()
+        for node in ng.nodes:
+            objects.Node.remove_from_cluster(node)
+            if not netmanager.is_same_network(node.ip, default_admin_net.cidr):
+                objects.Node.set_error_status_and_file_notification(
+                    node,
+                    consts.NODE_ERRORS.discover,
+                    "Node '{0}' nodegroup was deleted which means that it may "
+                    "not be able to boot correctly unless it is a member of "
+                    "another node group admin network".format(node.hostname)
+                )
         try:
             task = UpdateDnsmasqTaskManager().execute()
         except errors.TaskAlreadyRunning:
diff --git a/nailgun/nailgun/test/base.py b/nailgun/nailgun/test/base.py
index f3c2baa..68ed6f1 100644
--- a/nailgun/nailgun/test/base.py
+++ b/nailgun/nailgun/test/base.py
@@ -1452,7 +1452,7 @@ class EnvironmentManager(object):
                              expect_errors)
 
     def _create_network_group(self, expect_errors=False, cluster=None,
-                              **kwargs):
+                              group_id=None, **kwargs):
         if not cluster:
             cluster = self.clusters[0]
         ng = {
@@ -1461,7 +1461,7 @@ class EnvironmentManager(object):
             "vlan_start": 50,
             "cidr": "10.3.0.0/24",
             "gateway": "10.3.0.1",
-            "group_id": Cluster.get_default_group(cluster).id,
+            "group_id": group_id or Cluster.get_default_group(cluster).id,
             "meta": {
                 "notation": consts.NETWORK_NOTATION.cidr,
                 "use_gateway": True,
diff --git a/nailgun/nailgun/test/unit/test_node_groups.py b/nailgun/nailgun/test/unit/test_node_groups.py
index cdd12ab..0893a36 100644
--- a/nailgun/nailgun/test/unit/test_node_groups.py
+++ b/nailgun/nailgun/test/unit/test_node_groups.py
@@ -26,6 +26,7 @@ from nailgun.db import db
 from nailgun.db.sqlalchemy import models
 from nailgun import errors
 from nailgun import objects
+from nailgun.rpc.receiver import NailgunReceiver
 from nailgun.test.base import BaseIntegrationTest
 from nailgun.utils import reverse
 
@@ -37,7 +38,7 @@ class TestNodeGroups(BaseIntegrationTest):
     def setUp(self):
         super(TestNodeGroups, self).setUp()
         self.cluster = self.env.create(
-            release_kwargs={'version': '1111-8.0'},
+            release_kwargs={'version': '1111-9.0'},
             cluster_kwargs={
                 'api': False,
                 'net_provider': consts.CLUSTER_NET_PROVIDERS.neutron,
@@ -159,6 +160,42 @@ class TestNodeGroups(BaseIntegrationTest):
         self.assertEqual(err.exception.message,
                          'Default node group cannot be deleted.')
 
+    @patch('nailgun.task.task.rpc.cast')
+    @patch('objects.Notification.create')
+    def test_delete_non_default_node_group_reset_node_to_error(
+            self, _, notify):
+        node_group = self.env.create_node_group(api=False,
+                                                cluster_id=self.cluster.id)
+        self.env._create_network_group(cluster=self.cluster,
+                                       group_id=node_group.id)
+        node2 = self.env.create_node(group_id=node_group.id,
+                                     roles=['compute'],
+                                     status=consts.NODE_STATUSES.provisioned,
+                                     cluster_id=self.cluster.id,
+                                     ip='10.3.0.42')
+        task = self.env.launch_deployment()
+        NailgunReceiver.deploy_resp(
+            task_uuid=task.uuid,
+            status=consts.TASK_STATUSES.ready,
+            progress=100,
+            nodes=[{'uid': n.uid, 'status': consts.NODE_STATUSES.ready,
+                    'progress': 100}
+                   for n in self.env.nodes],
+        )
+        reset_task = self.env.reset_environment()
+        NailgunReceiver.reset_environment_resp(
+            task_uuid=reset_task.uuid,
+            status=consts.TASK_STATUSES.ready,
+            progress=100,
+            nodes=[{'uid': n.uid}
+                   for n in self.env.nodes],
+        )
+        self.env.delete_node_group(node_group.id)
+        self.assertEqual(node2.status, consts.NODE_STATUSES.error)
+        self.assertEqual(node2.error_type, consts.NODE_ERRORS.discover)
+        self.assertIsNone(node2.cluster)
+        notify.assert_called()
+
     def test_delete_non_default_node_group_error(self):
         node_group = self.env.create_node_group(api=False,
                                                 cluster_id=self.cluster.id)