Import "traffic_profile" modules only once

"traffic_profile" modules should be imported only once. Every time
TrafficProfile.get is called, the modules under
"yardstick.network_services.traffic_profiles" are loaded [1]. Instead
of this, the modules should be registered only once the first time
"yardstick.network_services.traffic_profiles.base" is loaded. This
will reduce the execution time and will avoid unnecessary calls.

[1] https://github.com/opnfv/yardstick/blob/d2c7cc4e9768ed003257a95c92cdb278d516761b/yardstick/network_services/traffic_profile/base.py#L36-L37

JIRA: YARDSTICK-951

Change-Id: Ia3565378ba3a1377fcb0aea8bda50ef8189414fd
Signed-off-by: Rodolfo Alonso Hernandez <rodolfo.alonso.hernandez@intel.com>

1 files changed, 6 insertions, 5 deletions

diff --git a/yardstick/network_services/vnf_generic/vnf/tg_rfc2544_ixia.py b/yardstick/network_services/vnf_generic/vnf/tg_rfc2544_ixia.py
index 12510db96..068b19d8d 100644
--- a/yardstick/network_services/vnf_generic/vnf/tg_rfc2544_ixia.py
+++ b/yardstick/network_services/vnf_generic/vnf/tg_rfc2544_ixia.py
@@ -19,11 +19,11 @@ import os
 import logging
 import sys
 
-from yardstick.common.utils import ErrorClass
+from yardstick.common import utils
 from yardstick.network_services.vnf_generic.vnf.sample_vnf import SampleVNFTrafficGen
 from yardstick.network_services.vnf_generic.vnf.sample_vnf import ClientResourceHelper
 from yardstick.network_services.vnf_generic.vnf.sample_vnf import Rfc2544ResourceHelper
-from yardstick.benchmark.scenarios.networking.vnf_generic import find_relative_file
+
 
 LOG = logging.getLogger(__name__)
 
@@ -36,7 +36,7 @@ sys.path.append(IXNET_LIB)
 try:
     from IxNet import IxNextgen
 except ImportError:
-    IxNextgen = ErrorClass
+    IxNextgen = utils.ErrorClass
 
 
 class IxiaRfc2544Helper(Rfc2544ResourceHelper):
@@ -122,8 +122,9 @@ class IxiaResourceHelper(ClientResourceHelper):
 
         # we don't know client_file_name until runtime as instantiate
         client_file_name = \
-            find_relative_file(self.scenario_helper.scenario_cfg['ixia_profile'],
-                               self.scenario_helper.scenario_cfg["task_path"])
+            utils.find_relative_file(
+                self.scenario_helper.scenario_cfg['ixia_profile'],
+                self.scenario_helper.scenario_cfg["task_path"])
         self.client.ix_load_config(client_file_name)
         time.sleep(WAIT_AFTER_CFG_LOAD)