Rename ResourceProfile.check_if_sa_running()

* Update log message and rename method to make debugging easier
* Fix pep8 violations in touched files

JIRA: YARDSTICK-859

Change-Id: Id138d72cd8557ffacd5dcc81d06feeb484e13625
Signed-off-by: Emma Foley <emma.l.foley@intel.com>

3 files changed, 25 insertions, 32 deletions

diff --git a/yardstick/network_services/collector/subscriber.py b/yardstick/network_services/collector/subscriber.py
index 4dc5a796e..7e18302eb 100644
--- a/yardstick/network_services/collector/subscriber.py
+++ b/yardstick/network_services/collector/subscriber.py
@@ -62,12 +62,13 @@ class Collector(object):
             # Result example:
             # {"VNF1: { "tput" : [1000, 999] }, "VNF2": { "latency": 100 }}
             LOG.debug("collect KPI for %s", node_name)
-            if resource.check_if_sa_running("collectd")[0] != 0:
+            if resource.check_if_system_agent_running("collectd")[0] != 0:
                 continue
 
             try:
                 results[node_name] = {"core": resource.amqp_collect_nfvi_kpi()}
                 LOG.debug("%s collect KPIs %s", node_name, results[node_name]['core'])
-            except Exception:
-                LOG.exception("")
+            # NOTE(elfoley): catch a more specific error
+            except Exception as exc:  # pylint: disable=broad-except
+                LOG.exception(exc)
         return results
diff --git a/yardstick/network_services/nfvi/resource.py b/yardstick/network_services/nfvi/resource.py
index adf4d8ae6..dc5c46a86 100644
--- a/yardstick/network_services/nfvi/resource.py
+++ b/yardstick/network_services/nfvi/resource.py
@@ -13,20 +13,16 @@
 # limitations under the License.
 """ Resource collection definitions """
 
-from __future__ import absolute_import
-from __future__ import print_function
-
-import logging
-from itertools import chain
-
 import errno
-import jinja2
+from itertools import chain
+import logging
+import multiprocessing
 import os
 import os.path
 import re
-import multiprocessing
-import pkg_resources
 
+import jinja2
+import pkg_resources
 from oslo_config import cfg
 from oslo_utils.encodeutils import safe_decode
 
@@ -92,7 +88,7 @@ class ResourceProfile(object):
 
         return cls(node, plugins=plugins, interval=interval, timeout=timeout)
 
-    def check_if_sa_running(self, process):
+    def check_if_system_agent_running(self, process):
         """ verify if system agent is running """
         try:
             err, pid, _ = self.connection.execute("pgrep -f %s" % process)
@@ -101,7 +97,7 @@ class ResourceProfile(object):
         except OSError as e:
             if e.errno in {errno.ECONNRESET}:
                 # if we can't connect to check, then we won't be able to connect to stop it
-                LOG.exception("can't connect to host to check collectd status")
+                LOG.exception("Can't connect to host to check %s status", process)
                 return 1, None
             raise
 
@@ -327,7 +323,7 @@ class ResourceProfile(object):
             self.amqp_client.terminate()
 
         LOG.debug("Check if %s is running", agent)
-        status, pid = self.check_if_sa_running(agent)
+        status, pid = self.check_if_system_agent_running(agent)
         LOG.debug("status %s  pid %s", status, pid)
         if status != 0:
             return
diff --git a/yardstick/network_services/vnf_generic/vnf/sample_vnf.py b/yardstick/network_services/vnf_generic/vnf/sample_vnf.py
index 5eeb6c889..fbaaa0ca8 100644
--- a/yardstick/network_services/vnf_generic/vnf/sample_vnf.py
+++ b/yardstick/network_services/vnf_generic/vnf/sample_vnf.py
@@ -13,38 +13,34 @@
 # limitations under the License.
 """ Base class implementation for generic vnf implementation """
 
-from __future__ import absolute_import
-
-import posixpath
-import time
+from collections import Mapping
 import logging
+from multiprocessing import Queue, Value, Process
 import os
+import posixpath
 import re
-import subprocess
-from collections import Mapping
-from multiprocessing import Queue, Value, Process
-
 from six.moves import cStringIO
+import subprocess
+import time
 
+from trex_stl_lib.trex_stl_client import LoggerApi
+from trex_stl_lib.trex_stl_client import STLClient
+from trex_stl_lib.trex_stl_exceptions import STLError
 from yardstick.benchmark.contexts.base import Context
 from yardstick.benchmark.scenarios.networking.vnf_generic import find_relative_file
 from yardstick.common import exceptions as y_exceptions
 from yardstick.common.process import check_if_process_failed
+from yardstick.network_services.helpers.dpdkbindnic_helper import DpdkBindHelper
 from yardstick.network_services.helpers.samplevnf_helper import PortPairs
 from yardstick.network_services.helpers.samplevnf_helper import MultiPortConfig
-from yardstick.network_services.helpers.dpdkbindnic_helper import DpdkBindHelper
 from yardstick.network_services.nfvi.resource import ResourceProfile
+from yardstick.network_services.utils import get_nsb_option
 from yardstick.network_services.vnf_generic.vnf.base import GenericVNF
-from yardstick.network_services.vnf_generic.vnf.base import QueueFileWrapper
 from yardstick.network_services.vnf_generic.vnf.base import GenericTrafficGen
-from yardstick.network_services.utils import get_nsb_option
-
-from trex_stl_lib.trex_stl_client import STLClient
-from trex_stl_lib.trex_stl_client import LoggerApi
-from trex_stl_lib.trex_stl_exceptions import STLError
-
+from yardstick.network_services.vnf_generic.vnf.base import QueueFileWrapper
 from yardstick.ssh import AutoConnectSSH
 
+
 DPDK_VERSION = "dpdk-16.07"
 
 LOG = logging.getLogger(__name__)
@@ -346,7 +342,7 @@ class ResourceHelper(object):
 
     def _collect_resource_kpi(self):
         result = {}
-        status = self.resource.check_if_sa_running("collectd")[0]
+        status = self.resource.check_if_system_agent_running("collectd")[0]
         if status == 0:
             result = self.resource.amqp_collect_nfvi_kpi()