Drop validation resources dependency from CONF

Validation resources is going to be a stable interface in lib, so
the first step is to remove dependencies from configuration items.

Validation resources are directly used by Tempest only, so the
change in interface should not cause any issue with plugins.

Change-Id: I9ad52d9985139ce373f927c838fcaa8812ea9d17

tempest/common/validation_resources.py

@@ -13,20 +13,14 @@
 
 from oslo_log import log as logging
 
-from tempest import config
-
 from tempest.lib.common.utils import data_utils
 from tempest.lib import exceptions as lib_exc
 
-CONF = config.CONF
 LOG = logging.getLogger(__name__)
 
 
-def _create_neutron_sec_group_rules(os, sec_group):
+def _create_neutron_sec_group_rules(os, sec_group, ethertype='IPv4'):
     sec_group_rules_client = os.security_group_rules_client
-    ethertype = 'IPv4'
-    if CONF.validation.ip_version_for_ssh == 6:
-        ethertype = 'IPv6'
 
     sec_group_rules_client.create_security_group_rule(
         security_group_id=sec_group['id'],
@@ -42,7 +36,8 @@ def _create_neutron_sec_group_rules(os, sec_group):
         direction='ingress')
 
 
-def create_ssh_security_group(os, add_rule=False):
+def create_ssh_security_group(os, add_rule=False, ethertype='IPv4',
+                              use_neutron=True):
     security_groups_client = os.compute_security_groups_client
     security_group_rules_client = os.compute_security_group_rules_client
     sg_name = data_utils.rand_name('securitygroup-')
@@ -50,8 +45,9 @@ def create_ssh_security_group(os, add_rule=False):
     security_group = security_groups_client.create_security_group(
         name=sg_name, description=sg_description)['security_group']
     if add_rule:
-        if CONF.service_available.neutron:
+        if use_neutron:
-            _create_neutron_sec_group_rules(os, security_group)
+            _create_neutron_sec_group_rules(os, security_group,
+                                            ethertype=ethertype)
         else:
             security_group_rules_client.create_security_group_rule(
                 parent_group_id=security_group['id'], ip_protocol='tcp',
@@ -64,7 +60,10 @@ def create_ssh_security_group(os, add_rule=False):
     return security_group
 
 
-def create_validation_resources(os, validation_resources=None):
+def create_validation_resources(os, validation_resources=None,
+                                ethertype='IPv4', use_neutron=True,
+                                floating_network_id=None,
+                                floating_network_name=None):
     # Create and Return the validation resources required to validate a VM
     validation_data = {}
     if validation_resources:
@@ -78,11 +77,12 @@ def create_validation_resources(os, validation_resources=None):
             if validation_resources['security_group_rules']:
                 add_rule = True
             validation_data['security_group'] = \
-                create_ssh_security_group(os, add_rule)
+                create_ssh_security_group(
+                    os, add_rule, use_neutron=use_neutron, ethertype=ethertype)
         if validation_resources['floating_ip']:
-            if CONF.service_available.neutron:
+            if use_neutron:
                 floatingip = os.floating_ips_client.create_floatingip(
-                    floating_network_id=CONF.network.public_network_id)
+                    floating_network_id=floating_network_id)
                 # validation_resources['floating_ip'] has historically looked
                 # like a compute API POST /os-floating-ips response, so we need
                 # to mangle it a bit for a Neutron response with different
@@ -96,7 +96,7 @@ def create_validation_resources(os, validation_resources=None):
                 # floating IPs using the compute API should be capped at 2.35.
                 validation_data.update(
                     os.compute_floating_ips_client.create_floating_ip(
-                        pool=CONF.network.floating_network_name))
+                        pool=floating_network_name))
     return validation_data
 
 

tempest/test.py

@@ -378,9 +378,18 @@ class BaseTestCase(testtools.testcase.WithAttributes,
     @classmethod
     def resource_setup(cls):
         """Class level resource setup for test cases."""
+        if (CONF.validation.ip_version_for_ssh not in (4, 6) and
+            CONF.service_available.neutron):
+            msg = "Invalid IP version %s in ip_version_for_ssh. Use 4 or 6"
+            raise lib_exc.InvalidConfiguration(
+                msg % CONF.validation.ip_version_for_ssh)
         if hasattr(cls, "os_primary"):
             cls.validation_resources = vresources.create_validation_resources(
-                cls.os_primary, cls.validation_resources)
+                cls.os_primary, cls.validation_resources,
+                use_neutron=CONF.service_available.neutron,
+                ethertype='IPv' + str(CONF.validation.ip_version_for_ssh),
+                floating_network_id=CONF.network.public_network_id,
+                floating_network_name=CONF.network.floating_network_name)
         else:
             LOG.warning("Client manager not found, validation resources not"
                         " created")