Add enable-fwaas to relation data

Add enable-fwaas to neutron-plugin-api relation data so
that neutron-openvswitch updates neutron-l3-agent
configuration accordingly.

TODO: Sync charmhelpers to get related changes
https://github.com/juju/charm-helpers/pull/635

Partial-Bug: #1934129
Change-Id: I5019c5ed3b8ab556d4900f1fe46dee69f5f09ee7

hooks/neutron_api_context.py

@@ -282,6 +282,28 @@ def is_port_forwarding_enabled():
     return False
 
 
+def is_fwaas_enabled():
+    """
+    Check if Firewall as a service feature should be enabled.
+
+    returns: True if enable-fwaas config item is True,
+        otherwise False.
+    :rtype: boolean
+    """
+    if config('enable-fwaas'):
+
+        cmp_release = CompareOpenStackReleases(os_release('neutron-server'))
+        if cmp_release < 'stein' or cmp_release > 'ussuri':
+            log("The fwaas option is only supported "
+                "on Stein to Ussuri",
+                ERROR)
+            return False
+
+        return True
+
+    return False
+
+
 def is_vlan_trunking_requested_and_valid():
     """Check whether VLAN trunking should be enabled by checking whether
        it has been requested and, if it has, is it supported in the current

hooks/neutron_api_hooks.py

@@ -107,6 +107,7 @@ from neutron_api_context import (
     get_l2population,
     get_l3ha,
     get_overlay_network_type,
+    is_fwaas_enabled,
     is_nfg_logging_enabled,
     is_nsg_logging_enabled,
     is_qos_requested_and_valid,
@@ -554,6 +555,7 @@ def neutron_plugin_api_relation_joined(rid=None):
             'enable-nsg-logging': is_nsg_logging_enabled(),
             'enable-nfg-logging': is_nfg_logging_enabled(),
             'enable-port-forwarding': is_port_forwarding_enabled(),
+            'enable-fwaas': is_fwaas_enabled(),
             'overlay-network-type': get_overlay_network_type(),
             'addr': unit_get('private-address'),
             'polling-interval': config('polling-interval'),

unit_tests/test_neutron_api_hooks.py

@@ -91,6 +91,7 @@ TO_PATCH = [
     'is_nsg_logging_enabled',
     'is_nfg_logging_enabled',
     'is_port_forwarding_enabled',
+    'is_fwaas_enabled',
     'remove_old_packages',
     'services',
     'service_restart',
@@ -144,6 +145,7 @@ class NeutronAPIHooksTests(CharmTestCase):
         self.is_nsg_logging_enabled.return_value = False
         self.is_nfg_logging_enabled.return_value = False
         self.is_port_forwarding_enabled.return_value = False
+        self.is_fwaas_enabled.return_value = True
 
     def _fake_relids(self, rel_name):
         return [randrange(100) for _count in range(2)]
@@ -542,6 +544,7 @@ class NeutronAPIHooksTests(CharmTestCase):
             'enable-nsg-logging': False,
             'enable-nfg-logging': False,
             'enable-port-forwarding': False,
+            'enable-fwaas': True,
             'global-physnet-mtu': 1500,
             'physical-network-mtus': None,
         }
@@ -588,6 +591,7 @@ class NeutronAPIHooksTests(CharmTestCase):
             'enable-nsg-logging': True,
             'enable-nfg-logging': False,
             'enable-port-forwarding': False,
+            'enable-fwaas': True,
             'global-physnet-mtu': 1500,
             'physical-network-mtus': None,
         }
@@ -640,6 +644,7 @@ class NeutronAPIHooksTests(CharmTestCase):
             'enable-nsg-logging': False,
             'enable-nfg-logging': True,
             'enable-port-forwarding': False,
+            'enable-fwaas': True,
             'global-physnet-mtu': 1500,
             'physical-network-mtus': None,
         }
@@ -691,6 +696,7 @@ class NeutronAPIHooksTests(CharmTestCase):
             'enable-nsg-logging': False,
             'enable-nfg-logging': False,
             'enable-port-forwarding': True,
+            'enable-fwaas': True,
             'global-physnet-mtu': 1500,
             'physical-network-mtus': None,
         }
@@ -742,6 +748,7 @@ class NeutronAPIHooksTests(CharmTestCase):
             'enable-nsg-logging': False,
             'enable-nfg-logging': False,
             'enable-port-forwarding': False,
+            'enable-fwaas': True,
             'global-physnet-mtu': 1500,
             'physical-network-mtus': None,
         }
@@ -788,6 +795,7 @@ class NeutronAPIHooksTests(CharmTestCase):
             'enable-nsg-logging': False,
             'enable-nfg-logging': False,
             'enable-port-forwarding': False,
+            'enable-fwaas': True,
             'global-physnet-mtu': 1500,
             'physical-network-mtus': None,
         }
@@ -836,6 +844,7 @@ class NeutronAPIHooksTests(CharmTestCase):
             'enable-nsg-logging': False,
             'enable-nfg-logging': False,
             'enable-port-forwarding': False,
+            'enable-fwaas': True,
             'global-physnet-mtu': 1500,
             'physical-network-mtus': None,
         }
@@ -883,6 +892,7 @@ class NeutronAPIHooksTests(CharmTestCase):
             'enable-nsg-logging': False,
             'enable-nfg-logging': False,
             'enable-port-forwarding': False,
+            'enable-fwaas': True,
             'global-physnet-mtu': 1500,
             'physical-network-mtus': None,
         }