Take control over Rally logics

Rally selects the first external network [1] which could raise side
effects if:
 - another testcase is creating a dummy external network in //
 - all external subnets are not reachable from jumphost
It's now overriden by EXTERNAL_NETWORK as defined in Functest

Rally creates a new shared network if one already exists [2].
As juju now allows other shared networks, it can be safely created by
Functest to allow only one logic and to handle provider networks,
different name servers, etc...

[1] https://github.com/openstack/rally-openstack/blob/master/rally_openstack/verification/tempest/config.py#L146
[2] https://github.com/openstack/rally-openstack/blob/master/rally_openstack/verification/tempest/context.py#L85

Change-Id: Icf8c08077d4b0a9eb1c2e1b7309c62957b0a3b63
Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

1 files changed, 25 insertions, 4 deletions

diff --git a/functest/opnfv_tests/openstack/tempest/tempest.py b/functest/opnfv_tests/openstack/tempest/tempest.py
index 9d788de8c..75a2fb5a1 100644
--- a/functest/opnfv_tests/openstack/tempest/tempest.py
+++ b/functest/opnfv_tests/openstack/tempest/tempest.py
@@ -33,11 +33,12 @@ LOGGER = logging.getLogger(__name__)
 
 
 class TempestCommon(singlevm.VmReady2):
-    # pylint: disable=too-many-instance-attributes
+    # pylint: disable=too-many-instance-attributes,too-many-public-methods
     """TempestCommon testcases implementation class."""
 
     visibility = 'public'
     filename_alt = '/home/opnfv/functest/images/cirros-0.4.0-x86_64-disk.img'
+    shared_network = True
 
     def __init__(self, **kwargs):
         if "case_name" not in kwargs:
@@ -83,9 +84,6 @@ class TempestCommon(singlevm.VmReady2):
         except Exception:  # pylint: disable=broad-except
             pass
 
-    def create_network_resources(self):
-        pass
-
     def check_services(self):
         """Check the mandatory services."""
         for service in self.services:
@@ -356,6 +354,27 @@ class TempestCommon(singlevm.VmReady2):
         with open(rally_conf, 'wb') as config_file:
             rconfig.write(config_file)
 
+    def update_network_section(self):
+        """Update network section in tempest.conf"""
+        rconfig = configparser.RawConfigParser()
+        rconfig.read(self.conf_file)
+        if not rconfig.has_section('network'):
+            rconfig.add_section('network')
+        rconfig.set('network', 'public_network_id', self.ext_net.id)
+        rconfig.set('network', 'floating_network_name', self.ext_net.name)
+        with open(self.conf_file, 'wb') as config_file:
+            rconfig.write(config_file)
+
+    def update_compute_section(self):
+        """Update neutron section in tempest.conf"""
+        rconfig = configparser.RawConfigParser()
+        rconfig.read(self.conf_file)
+        if not rconfig.has_section('compute'):
+            rconfig.add_section('compute')
+        rconfig.set('compute', 'fixed_network_name', self.network.name)
+        with open(self.conf_file, 'wb') as config_file:
+            rconfig.write(config_file)
+
     def update_scenario_section(self):
         """Update scenario section in tempest.conf"""
         rconfig = configparser.RawConfigParser()
@@ -431,6 +450,8 @@ class TempestCommon(singlevm.VmReady2):
             flavor_alt_id=self.flavor_alt.id,
             admin_role_name=self.role_name, cidr=self.cidr,
             domain_id=self.project.domain.id)
+        self.update_network_section()
+        self.update_compute_section()
         self.update_scenario_section()
         self.backup_tempest_config(self.conf_file, self.res_dir)