[BGP] Port tests without FIP

Added NoFipPortTest class to test_port module. They are only executed
when BGP is configured and expose_tenant_networks is enabled. These
tests use a VM without FIP. The tests connect to the fixed IPs from its
tenant networks.

Change-Id: I458ab8f8ebe92a0f53bbd10675ae161450ffc0ff

tobiko/openstack/neutron/__init__.py

@@ -123,6 +123,7 @@ get_router = _router.get_router
 get_router_id = _router.get_router_id
 remove_router_interface = _router.remove_router_interface
 wait_for_master_and_backup_agents = _router.wait_for_master_and_backup_agents
+update_router = _router.update_router
 RouterType = _router.RouterType
 RouterIdType = _router.RouterIdType
 NoSuchRouter = _router.NoSuchRouter

tobiko/openstack/neutron/_router.py

@@ -182,6 +182,13 @@ def remove_router_interface(router: RouterIdType,
         raise tobiko.ObjectNotFound() from ex
 
 
+def update_router(router: RouterIdType, client=None, **params) -> RouterType:
+    router_id = get_router_id(router)
+    reply = _client.neutron_client(client).update_router(
+        router_id, body={'router': params})
+    return reply['router']
+
+
 class NoSuchRouter(tobiko.ObjectNotFound):
     message = "No such router found for {id!r}"
 

tobiko/openstack/stacks/__init__.py

@@ -37,6 +37,7 @@ Centos7ServerStackFixture = _centos.Centos7ServerStackFixture
 CirrosFlavorStackFixture = _cirros.CirrosFlavorStackFixture
 CirrosImageFixture = _cirros.CirrosImageFixture
 CirrosServerStackFixture = _cirros.CirrosServerStackFixture
+CirrosNoFipServerStackFixture = _cirros.CirrosNoFipServerStackFixture
 CirrosServerWithDefaultSecurityGroupStackFixture = (
     _cirros.CirrosServerWithDefaultSecurityGroupStackFixture)
 CirrosShellConnection = _cirros.CirrosShellConnection

tobiko/openstack/stacks/_cirros.py

@@ -22,6 +22,7 @@ from tobiko import config
 from tobiko.openstack import glance
 from tobiko.openstack import neutron
 from tobiko.openstack import heat
+from tobiko.openstack.stacks import _neutron
 from tobiko.openstack.stacks import _nova
 from tobiko.shell import sh
 from tobiko.shell import ssh
@@ -152,6 +153,11 @@ class ExtraDhcpOptsCirrosServerStackFixture(CirrosServerStackFixture):
     use_extra_dhcp_opts = True
 
 
+class CirrosNoFipServerStackFixture(ExtraDhcpOptsCirrosServerStackFixture):
+    has_floating_ip = False
+    network_stack = tobiko.required_fixture(_neutron.NetworkNoFipStackFixture)
+
+
 class MultiIPCirrosServerStackFixture(CirrosServerStackFixture):
     template = _hot.heat_template_file('nova/multi_ip_test_stack.yaml')
     expected_creted_status = {heat.CREATE_IN_PROGRESS, heat.CREATE_COMPLETE}

tobiko/openstack/stacks/_neutron.py

@@ -275,6 +275,15 @@ def ensure_router_interface(
                                         add_cleanup=add_cleanup)
 
 
+class RouterNoSnatStackFixture(RouterStackFixture):
+    """Extra Router configured with SNAT disabled"""
+    def setup_fixture(self):
+        super().setup_fixture()
+        egi = neutron.get_router(self.router_id)['external_gateway_info']
+        egi['enable_snat'] = False
+        neutron.update_router(self.router_id, external_gateway_info=egi)
+
+
 @neutron.skip_if_missing_networking_extensions('subnet_allocation')
 class SubnetPoolFixture(tobiko.SharedFixture):
     """Neutron Subnet Pool Fixture.
@@ -567,6 +576,11 @@ class NetworkStackFixture(heat.HeatStackFixture):
                               predicate=fixture.is_router_distributed)
 
 
+class NetworkNoFipStackFixture(NetworkStackFixture):
+    """Extra Network Stack where VMs will not have FIPs"""
+    gateway_stack = tobiko.required_fixture(RouterNoSnatStackFixture)
+
+
 @neutron.skip_if_missing_networking_extensions('net-mtu-writable')
 class NetworkWithNetMtuWriteStackFixture(NetworkStackFixture):
 

tobiko/openstack/tests/_nova.py

@@ -38,19 +38,18 @@ def test_server_creation(stack=TestServerCreationStack):
                                  number_of_servers=0).first
 
 
-class NetworkNoFipStackFixture(_neutron.NetworkStackFixture):
+class TestNetworkNoFipStackFixture(_neutron.NetworkNoFipStackFixture):
     """Neutron network where VMs will be created with no FIP"""
     def setup_fixture(self):
         super().setup_fixture()
         # this stack will be deleted at the end of the test
-        tobiko.add_cleanup(NetworkNoFipStackFixture.cleanup_fixture, self)
+        tobiko.add_cleanup(TestNetworkNoFipStackFixture.cleanup_fixture, self)
 
 
-class TestServerNoFipCreationStack(_cirros.CirrosServerStackFixture):
+class TestServerNoFipCreationStack(_cirros.CirrosNoFipServerStackFixture):
     """Nova instance without FIP intended to be used for testing server
     creation"""
-    has_floating_ip = False
+    network_stack = tobiko.required_fixture(TestNetworkNoFipStackFixture)
-    network_stack = tobiko.required_fixture(NetworkNoFipStackFixture)
 
 
 def test_server_creation_no_fip():

tobiko/openstack/topology/_topology.py

@@ -302,9 +302,9 @@ class OpenStackTopology(tobiko.SharedFixture):
         neutron.METADATA_AGENT: 'devstack@q-meta',
         neutron.OVN_METADATA_AGENT: 'devstack@q-ovn-metadata-agent',
         neutron.NEUTRON_OVN_METADATA_AGENT: 'devstack@q-ovn-metadata-agent',
-        neutron.OVN_CONTROLLER: 'ovn-controller'
+        neutron.OVN_CONTROLLER: 'ovn-controller',
-        # TODO(eolivare): ovn_bgp_agent on devstack?
+        neutron.OVN_BGP_AGENT: 'ovn-bgp-agent',
-        # TODO(eolivare): frr on devstack?
+        neutron.FRR: 'frr'
     }
     agent_to_container_name_mappings: typing.Dict[str, str] = {}
 

tobiko/tests/scenario/neutron/test_port.py

@@ -31,6 +31,7 @@ from tobiko.shell import sh
 from tobiko.openstack import neutron
 from tobiko.openstack import stacks
 from tobiko.openstack import topology
+from tobiko.tripleo import overcloud
 
 
 LOG = log.getLogger(__name__)
@@ -159,6 +160,24 @@ class ExtraDhcpOptsPortTest(PortTest):
                       re.MULTILINE))
 
 
+@overcloud.skip_unless_ovn_bgp_agent
+class NoFipPortTest(ExtraDhcpOptsPortTest):
+    stack = tobiko.required_fixture(stacks.CirrosNoFipServerStackFixture)
+
+    def setUp(self):
+        super().setUp()
+
+        try:
+            node = topology.find_openstack_node(group='networker')
+        except topology.NoSuchOpenStackTopologyNodeGroup:
+            node = topology.find_openstack_node(group='controller')
+        expose_tenant_networks = topology.get_config_setting(
+            'bgp-agent.conf', node.ssh_client, 'expose_tenant_networks')
+        if expose_tenant_networks is None or (
+                expose_tenant_networks.lower() != 'true'):
+            tobiko.skip_test('BGP expose_tenant_networks is disabled')
+
+
 @neutron.skip_unless_is_ovn()
 class ExtraDhcpOptsPortLoggingTest(testtools.TestCase):
 

tobiko/tripleo/_overcloud.py

@@ -342,6 +342,8 @@ skip_unless_ovn_using_ha = tobiko.skip_unless(
     'OVN does not use HA DB model', is_ovn_using_ha)
 
 
+# TODO(eolivare): make this method work with devstack
+@_undercloud.skip_if_missing_undercloud
 def is_ovn_bgp_agent_running():
     return (len(tripleo.get_overcloud_nodes_running_service(
         topology.get_agent_service_name(neutron.OVN_BGP_AGENT))) > 0)