Add decorators in testcases for energy recording.

Test cases are:
	- rally (sanity and full)
	- refstack
	- cloudify_ims
	- vping_ssh

It also fix a bug on "energy_recording" decorator of energy module.

Change-Id: I625c214552ad1b89eaf7e196e706d7c69b37da33
Signed-off-by: Benoit HERARD <benoit.herard@orange.com>

3 files changed, 223 insertions, 152 deletions

diff --git a/functest/opnfv_tests/openstack/rally/rally.py b/functest/opnfv_tests/openstack/rally/rally.py
index d5acb1b2..6b7c49ca 100644
--- a/functest/opnfv_tests/openstack/rally/rally.py
+++ b/functest/opnfv_tests/openstack/rally/rally.py
@@ -8,27 +8,32 @@
 # http://www.apache.org/licenses/LICENSE-2.0
 #
 
+"""Rally testcases implementation."""
+
 from __future__ import division
 
 import json
 import logging
 import os
-import pkg_resources
 import re
 import subprocess
 import time
 
 import iniparse
+import pkg_resources
 import yaml
 
 from functest.core import testcase
+from functest.energy import energy
 from functest.utils.constants import CONST
 import functest.utils.openstack_utils as os_utils
 
-logger = logging.getLogger(__name__)
+LOGGER = logging.getLogger(__name__)
 
 
 class RallyBase(testcase.OSGCTestCase):
+    """Base class form Rally testcases implementation."""
+
     TESTS = ['authenticate', 'glance', 'cinder', 'heat', 'keystone',
              'neutron', 'nova', 'quotas', 'vm', 'all']
     GLANCE_IMAGE_NAME = CONST.__getattribute__('openstack_image_name')
@@ -64,6 +69,7 @@ class RallyBase(testcase.OSGCTestCase):
     RALLY_ROUTER_NAME = CONST.__getattribute__('rally_router_name')
 
     def __init__(self, **kwargs):
+        """Initialize RallyBase object."""
         super(RallyBase, self).__init__(**kwargs)
         self.mode = ''
         self.summary = []
@@ -74,6 +80,12 @@ class RallyBase(testcase.OSGCTestCase):
         self.network_dict = {}
         self.volume_type = None
         self.smoke = None
+        self.test_name = None
+        self.image_exists = None
+        self.image_id = None
+        self.start_time = None
+        self.result = None
+        self.details = None
 
     def _build_task_args(self, test_file_name):
         task_args = {'service_list': [test_file_name]}
@@ -117,7 +129,7 @@ class RallyBase(testcase.OSGCTestCase):
                 raise Exception("The scenario '%s' does not exist."
                                 % scenario_file_name)
 
-        logger.debug('Scenario fetched from : {}'.format(scenario_file_name))
+        LOGGER.debug('Scenario fetched from : %s', scenario_file_name)
         test_file_name = os.path.join(self.TEMP_DIR, test_yaml_file_name)
 
         if not os.path.exists(self.TEMP_DIR):
@@ -129,7 +141,8 @@ class RallyBase(testcase.OSGCTestCase):
     @staticmethod
     def get_task_id(cmd_raw):
         """
-        get task id from command rally result
+        Get task id from command rally result.
+
         :param cmd_raw:
         :return: task_id as string
         """
@@ -144,7 +157,8 @@ class RallyBase(testcase.OSGCTestCase):
     @staticmethod
     def task_succeed(json_raw):
         """
-        Parse JSON from rally JSON results
+        Parse JSON from rally JSON results.
+
         :param json_raw:
         :return: Bool
         """
@@ -161,6 +175,7 @@ class RallyBase(testcase.OSGCTestCase):
 
     @staticmethod
     def live_migration_supported():
+        """Determine is live migration is supported."""
         config = iniparse.ConfigParser()
         if (config.read(RallyBase.TEMPEST_CONF_FILE) and
                 config.has_section('compute-feature-enabled') and
@@ -173,6 +188,7 @@ class RallyBase(testcase.OSGCTestCase):
 
     @staticmethod
     def get_cmd_output(proc):
+        """Get command stdout."""
         result = ""
         while proc.poll() is None:
             line = proc.stdout.readline()
@@ -181,6 +197,7 @@ class RallyBase(testcase.OSGCTestCase):
 
     @staticmethod
     def excl_scenario():
+        """Exclude scenario."""
         black_tests = []
         try:
             with open(RallyBase.BLACKLIST_FILE, 'r') as black_list_file:
@@ -199,7 +216,7 @@ class RallyBase(testcase.OSGCTestCase):
                         tests = item['tests']
                         black_tests.extend(tests)
         except Exception:
-            logger.debug("Scenario exclusion not applied.")
+            LOGGER.debug("Scenario exclusion not applied.")
 
         return black_tests
 
@@ -213,7 +230,6 @@ class RallyBase(testcase.OSGCTestCase):
         :return: True if needle is eqial to any of the elements in haystack,
                  or if a nonempty regex pattern in haystack is found in needle.
         """
-
         # match without regex
         if needle in haystack:
             return True
@@ -227,6 +243,7 @@ class RallyBase(testcase.OSGCTestCase):
 
     @staticmethod
     def excl_func():
+        """Exclude functionalities."""
         black_tests = []
         func_list = []
 
@@ -244,22 +261,23 @@ class RallyBase(testcase.OSGCTestCase):
                         if func in functions:
                             tests = item['tests']
                             black_tests.extend(tests)
-        except Exception:
-            logger.debug("Functionality exclusion not applied.")
+        except Exception:  # pylint: disable=broad-except
+            LOGGER.debug("Functionality exclusion not applied.")
 
         return black_tests
 
     @staticmethod
     def apply_blacklist(case_file_name, result_file_name):
-        logger.debug("Applying blacklist...")
+        """Apply blacklist."""
+        LOGGER.debug("Applying blacklist...")
         cases_file = open(case_file_name, 'r')
         result_file = open(result_file_name, 'w')
 
         black_tests = list(set(RallyBase.excl_func() +
-                           RallyBase.excl_scenario()))
+                               RallyBase.excl_scenario()))
 
         if black_tests:
-            logger.debug("Blacklisted tests: " + str(black_tests))
+            LOGGER.debug("Blacklisted tests: " + str(black_tests))
 
         include = True
         for cases_line in cases_file:
@@ -280,56 +298,58 @@ class RallyBase(testcase.OSGCTestCase):
 
     @staticmethod
     def file_is_empty(file_name):
+        """Determine is a file is empty."""
         try:
             if os.stat(file_name).st_size > 0:
                 return False
-        except:
+        except Exception:  # pylint: disable=broad-except
             pass
 
         return True
 
     def _run_task(self, test_name):
-        logger.info('Starting test scenario "{}" ...'.format(test_name))
+        """Run a task."""
+        LOGGER.info('Starting test scenario "%s" ...', test_name)
 
         task_file = os.path.join(self.RALLY_DIR, 'task.yaml')
         if not os.path.exists(task_file):
-            logger.error("Task file '%s' does not exist." % task_file)
-            raise Exception("Task file '%s' does not exist." % task_file)
+            LOGGER.error("Task file '%s' does not exist.", task_file)
+            raise Exception("Task file '%s' does not exist.", task_file)
 
         file_name = self._prepare_test_list(test_name)
         if self.file_is_empty(file_name):
-            logger.info('No tests for scenario "{}"'.format(test_name))
+            LOGGER.info('No tests for scenario "%s"', test_name)
             return
 
         cmd_line = ("rally task start --abort-on-sla-failure "
                     "--task {0} "
                     "--task-args \"{1}\""
                     .format(task_file, self._build_task_args(test_name)))
-        logger.debug('running command line: {}'.format(cmd_line))
+        LOGGER.debug('running command line: %s', cmd_line)
 
-        p = subprocess.Popen(cmd_line, stdout=subprocess.PIPE,
-                             stderr=subprocess.STDOUT, shell=True)
-        output = self._get_output(p, test_name)
+        proc = subprocess.Popen(cmd_line, stdout=subprocess.PIPE,
+                                stderr=subprocess.STDOUT, shell=True)
+        output = self._get_output(proc, test_name)
         task_id = self.get_task_id(output)
-        logger.debug('task_id : {}'.format(task_id))
+        LOGGER.debug('task_id : %s', task_id)
 
         if task_id is None:
-            logger.error('Failed to retrieve task_id, validating task...')
+            LOGGER.error('Failed to retrieve task_id, validating task...')
             cmd_line = ("rally task validate "
                         "--task {0} "
                         "--task-args \"{1}\""
                         .format(task_file, self._build_task_args(test_name)))
-            logger.debug('running command line: {}'.format(cmd_line))
-            p = subprocess.Popen(cmd_line, stdout=subprocess.PIPE,
-                                 stderr=subprocess.STDOUT, shell=True)
-            output = self.get_cmd_output(p)
-            logger.error("Task validation result:" + "\n" + output)
+            LOGGER.debug('running command line: %s', cmd_line)
+            proc = subprocess.Popen(cmd_line, stdout=subprocess.PIPE,
+                                    stderr=subprocess.STDOUT, shell=True)
+            output = self.get_cmd_output(proc)
+            LOGGER.error("Task validation result:" + "\n" + output)
             return
 
         # check for result directory and create it otherwise
         if not os.path.exists(self.RESULTS_DIR):
-            logger.debug('{} does not exist, we create it.'
-                         .format(self.RESULTS_DIR))
+            LOGGER.debug('%s does not exist, we create it.',
+                         self.RESULTS_DIR)
             os.makedirs(self.RESULTS_DIR)
 
         # write html report file
@@ -338,25 +358,25 @@ class RallyBase(testcase.OSGCTestCase):
         cmd_line = "rally task report {} --out {}".format(task_id,
                                                           report_html_dir)
 
-        logger.debug('running command line: {}'.format(cmd_line))
+        LOGGER.debug('running command line: %s', cmd_line)
         os.popen(cmd_line)
 
         # get and save rally operation JSON result
         cmd_line = "rally task results %s" % task_id
-        logger.debug('running command line: {}'.format(cmd_line))
+        LOGGER.debug('running command line: %s', cmd_line)
         cmd = os.popen(cmd_line)
         json_results = cmd.read()
         report_json_name = 'opnfv-{}.json'.format(test_name)
         report_json_dir = os.path.join(self.RESULTS_DIR, report_json_name)
-        with open(report_json_dir, 'w') as f:
-            logger.debug('saving json file')
-            f.write(json_results)
+        with open(report_json_dir, 'w') as r_file:
+            LOGGER.debug('saving json file')
+            r_file.write(json_results)
 
-        """ parse JSON operation result """
+        # parse JSON operation result
         if self.task_succeed(json_results):
-            logger.info('Test scenario: "{}" OK.'.format(test_name) + "\n")
+            LOGGER.info('Test scenario: "{}" OK.'.format(test_name) + "\n")
         else:
-            logger.info('Test scenario: "{}" Failed.'.format(test_name) + "\n")
+            LOGGER.info('Test scenario: "{}" Failed.'.format(test_name) + "\n")
 
     def _get_output(self, proc, test_name):
         result = ""
@@ -393,15 +413,15 @@ class RallyBase(testcase.OSGCTestCase):
                 try:
                     success += float(percentage)
                 except ValueError:
-                    logger.info('Percentage error: %s, %s' %
-                                (percentage, line))
+                    LOGGER.info('Percentage error: %s, %s',
+                                percentage, line)
                 nb_totals += 1
             elif "Full duration" in line:
                 duration = line.split(': ')[1]
                 try:
                     overall_duration += float(duration)
                 except ValueError:
-                    logger.info('Duration error: %s, %s' % (duration, line))
+                    LOGGER.info('Duration error: %s, %s', duration, line)
 
         overall_duration = "{:10.2f}".format(overall_duration)
         if nb_totals == 0:
@@ -415,30 +435,30 @@ class RallyBase(testcase.OSGCTestCase):
                             'success': success_avg}
         self.summary.append(scenario_summary)
 
-        logger.debug("\n" + result)
+        LOGGER.debug("\n" + result)
 
         return result
 
     def _prepare_env(self):
-        logger.debug('Validating the test name...')
-        if not (self.test_name in self.TESTS):
+        LOGGER.debug('Validating the test name...')
+        if self.test_name not in self.TESTS:
             raise Exception("Test name '%s' is invalid" % self.test_name)
 
         volume_types = os_utils.list_volume_types(self.cinder_client,
                                                   private=False)
         if volume_types:
-            logger.debug("Using existing volume type(s)...")
+            LOGGER.debug("Using existing volume type(s)...")
         else:
-            logger.debug('Creating volume type...')
+            LOGGER.debug('Creating volume type...')
             self.volume_type = os_utils.create_volume_type(
                 self.cinder_client, self.CINDER_VOLUME_TYPE_NAME)
             if self.volume_type is None:
                 raise Exception("Failed to create volume type '%s'" %
                                 self.CINDER_VOLUME_TYPE_NAME)
-            logger.debug("Volume type '%s' is created succesfully." %
+            LOGGER.debug("Volume type '%s' is created succesfully.",
                          self.CINDER_VOLUME_TYPE_NAME)
 
-        logger.debug('Getting or creating image...')
+        LOGGER.debug('Getting or creating image...')
         self.image_exists, self.image_id = os_utils.get_or_create_image(
             self.GLANCE_IMAGE_NAME,
             self.GLANCE_IMAGE_PATH,
@@ -447,7 +467,7 @@ class RallyBase(testcase.OSGCTestCase):
             raise Exception("Failed to get or create image '%s'" %
                             self.GLANCE_IMAGE_NAME)
 
-        logger.debug("Creating network '%s'..." % self.RALLY_PRIVATE_NET_NAME)
+        LOGGER.debug("Creating network '%s'...", self.RALLY_PRIVATE_NET_NAME)
         self.network_dict = os_utils.create_shared_network_full(
             self.RALLY_PRIVATE_NET_NAME,
             self.RALLY_PRIVATE_SUBNET_NAME,
@@ -460,7 +480,7 @@ class RallyBase(testcase.OSGCTestCase):
     def _run_tests(self):
         if self.test_name == 'all':
             for test in self.TESTS:
-                if (test == 'all' or test == 'vm'):
+                if test == 'all' or test == 'vm':
                     continue
                 self._run_task(test)
         else:
@@ -485,25 +505,25 @@ class RallyBase(testcase.OSGCTestCase):
         total_duration = 0.0
         total_nb_tests = 0
         total_success = 0.0
-        for s in self.summary:
-            name = "{0:<17}".format(s['test_name'])
-            duration = float(s['overall_duration'])
+        for item in self.summary:
+            name = "{0:<17}".format(item['test_name'])
+            duration = float(item['overall_duration'])
             total_duration += duration
             duration = time.strftime("%M:%S", time.gmtime(duration))
             duration = "{0:<10}".format(duration)
-            nb_tests = "{0:<13}".format(s['nb_tests'])
-            total_nb_tests += int(s['nb_tests'])
-            success = "{0:<10}".format(str(s['success']) + '%')
-            total_success += float(s['success'])
+            nb_tests = "{0:<13}".format(item['nb_tests'])
+            total_nb_tests += int(item['nb_tests'])
+            success = "{0:<10}".format(str(item['success']) + '%')
+            total_success += float(item['success'])
             report += ("" +
                        "| " + name + " | " + duration + " | " +
                        nb_tests + " | " + success + "|\n" +
                        "+-------------------+------------"
                        "+---------------+-----------+\n")
             payload.append({'module': name,
-                            'details': {'duration': s['overall_duration'],
-                                        'nb tests': s['nb_tests'],
-                                        'success': s['success']}})
+                            'details': {'duration': item['overall_duration'],
+                                        'nb tests': item['nb_tests'],
+                                        'success': item['success']}})
 
         total_duration_str = time.strftime("%H:%M:%S",
                                            time.gmtime(total_duration))
@@ -526,29 +546,31 @@ class RallyBase(testcase.OSGCTestCase):
                    "+===============+===========+")
         report += "\n"
 
-        logger.info("\n" + report)
+        LOGGER.info("\n" + report)
         payload.append({'summary': {'duration': total_duration,
                                     'nb tests': total_nb_tests,
                                     'nb success': success_rate}})
 
         self.details = payload
 
-        logger.info("Rally '%s' success_rate is %s%%"
-                    % (self.case_name, success_rate))
+        LOGGER.info("Rally '%s' success_rate is %s%%",
+                    self.case_name, success_rate)
 
     def _clean_up(self):
         if self.volume_type:
-            logger.debug("Deleting volume type '%s'..." % self.volume_type)
+            LOGGER.debug("Deleting volume type '%s'...", self.volume_type)
             os_utils.delete_volume_type(self.cinder_client, self.volume_type)
 
         if not self.image_exists:
-            logger.debug("Deleting image '%s' with ID '%s'..."
-                         % (self.GLANCE_IMAGE_NAME, self.image_id))
+            LOGGER.debug("Deleting image '%s' with ID '%s'...",
+                         self.GLANCE_IMAGE_NAME, self.image_id)
             if not os_utils.delete_glance_image(self.nova_client,
                                                 self.image_id):
-                logger.error("Error deleting the glance image")
+                LOGGER.error("Error deleting the glance image")
 
-    def run(self):
+    @energy.enable_recording
+    def run(self, **kwargs):
+        """Run testcase."""
         self.start_time = time.time()
         try:
             self._prepare_env()
@@ -556,8 +578,8 @@ class RallyBase(testcase.OSGCTestCase):
             self._generate_report()
             self._clean_up()
             res = testcase.TestCase.EX_OK
-        except Exception as e:
-            logger.error('Error with run: %s' % e)
+        except Exception as exc:   # pylint: disable=broad-except
+            LOGGER.error('Error with run: %s', exc)
             res = testcase.TestCase.EX_RUN_ERROR
 
         self.stop_time = time.time()
@@ -565,7 +587,10 @@ class RallyBase(testcase.OSGCTestCase):
 
 
 class RallySanity(RallyBase):
+    """Rally sanity testcase implementation."""
+
     def __init__(self, **kwargs):
+        """Initialize RallySanity object."""
         if "case_name" not in kwargs:
             kwargs["case_name"] = "rally_sanity"
         super(RallySanity, self).__init__(**kwargs)
@@ -576,7 +601,10 @@ class RallySanity(RallyBase):
 
 
 class RallyFull(RallyBase):
+    """Rally full testcase implementation."""
+
     def __init__(self, **kwargs):
+        """Initialize RallyFull object."""
         if "case_name" not in kwargs:
             kwargs["case_name"] = "rally_full"
         super(RallyFull, self).__init__(**kwargs)
diff --git a/functest/opnfv_tests/openstack/refstack_client/refstack_client.py b/functest/opnfv_tests/openstack/refstack_client/refstack_client.py
index c2a05379..6ac72176 100644
--- a/functest/opnfv_tests/openstack/refstack_client/refstack_client.py
+++ b/functest/opnfv_tests/openstack/refstack_client/refstack_client.py
@@ -6,59 +6,69 @@
 # which accompanies this distribution, and is available at
 # http://www.apache.org/licenses/LICENSE-2.0
 
+"""Refstack client testcase implemenation."""
+
 from __future__ import division
 
 
 import argparse
 import logging
 import os
-import pkg_resources
 import re
 import sys
 import subprocess
 import time
 
+import pkg_resources
+
 from functest.core import testcase
+from functest.energy import energy
+from functest.opnfv_tests.openstack.refstack_client.tempest_conf \
+    import TempestConf
 from functest.opnfv_tests.openstack.tempest import conf_utils
 from functest.utils.constants import CONST
 import functest.utils.functest_utils as ft_utils
-from tempest_conf import TempestConf
 
-""" logging configuration """
-logger = logging.getLogger(__name__)
+# logging configuration """
+LOGGER = logging.getLogger(__name__)
 
 
 class RefstackClient(testcase.OSGCTestCase):
+    """RefstackClient testcase implementation class."""
 
     def __init__(self, **kwargs):
+        """Initialize RefstackClient testcase object."""
         if "case_name" not in kwargs:
             kwargs["case_name"] = "refstack_defcore"
         super(RefstackClient, self).__init__(**kwargs)
-        self.CONF_PATH = pkg_resources.resource_filename(
+        self.conf_path = pkg_resources.resource_filename(
             'functest',
             'opnfv_tests/openstack/refstack_client/refstack_tempest.conf')
-        self.FUNCTEST_TEST = pkg_resources.resource_filename(
+        self.functest_test = pkg_resources.resource_filename(
             'functest', 'opnfv_tests')
-        self.DEFCORE_LIST = 'openstack/refstack_client/defcore.txt'
-        self.confpath = os.path.join(self.FUNCTEST_TEST,
-                                     self.CONF_PATH)
+        self.defcore_list = 'openstack/refstack_client/defcore.txt'
+        self.confpath = os.path.join(self.functest_test,
+                                     self.conf_path)
         self.defcorelist = pkg_resources.resource_filename(
             'functest', 'opnfv_tests/openstack/refstack_client/defcore.txt')
+        self.testlist = None
         self.insecure = ''
         if ('https' in CONST.__getattribute__('OS_AUTH_URL') and
                 CONST.__getattribute__('OS_INSECURE').lower() == 'true'):
             self.insecure = '-k'
 
     def run_defcore(self, conf, testlist):
+        """Run defcore sys command."""
         cmd = ("refstack-client test {0} -c {1} -v --test-list {2}"
                .format(self.insecure, conf, testlist))
-        logger.info("Starting Refstack_defcore test case: '%s'." % cmd)
+        LOGGER.info("Starting Refstack_defcore test case: '%s'.", cmd)
         ft_utils.execute_command(cmd)
 
     def run_defcore_default(self):
+        """Run default defcare sys command."""
         cmd = ("refstack-client test {0} -c {1} -v --test-list {2}"
                .format(self.insecure, self.confpath, self.defcorelist))
-        logger.info("Starting Refstack_defcore test case: '%s'." % cmd)
+        LOGGER.info("Starting Refstack_defcore test case: '%s'.", cmd)
 
         header = ("Refstack environment:\n"
                   "  SUT: %s\n  Scenario: %s\n  Node: %s\n  Date: %s\n" %
@@ -74,40 +84,41 @@ class RefstackClient(testcase.OSGCTestCase):
                                   "environment.log"), 'w+')
         f_env.write(header)
 
-        p = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE,
-                             stderr=subprocess.STDOUT, bufsize=1)
+        process = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE,
+                                   stderr=subprocess.STDOUT, bufsize=1)
 
-        with p.stdout:
-            for line in iter(p.stdout.readline, b''):
+        with process.stdout:
+            for line in iter(process.stdout.readline, b''):
                 if 'Tests' in line:
                     break
-                if re.search("\} tempest\.", line):
-                    logger.info(line.replace('\n', ''))
+                if re.search(r"\} tempest\.", line):
+                    LOGGER.info(line.replace('\n', ''))
                 f_stdout.write(line)
-        p.wait()
+        process.wait()
 
         f_stdout.close()
         f_env.close()
 
     def parse_refstack_result(self):
+        """Parse Refstact results."""
         try:
             with open(os.path.join(conf_utils.REFSTACK_RESULTS_DIR,
                                    "refstack.log"), 'r') as logfile:
                 output = logfile.read()
 
-            for match in re.findall("Ran: (\d+) tests in (\d+\.\d{4}) sec.",
+            for match in re.findall(r"Ran: (\d+) tests in (\d+\.\d{4}) sec.",
                                     output):
                 num_tests = match[0]
-                logger.info("Ran: %s tests in %s sec." % (num_tests, match[1]))
-            for match in re.findall("(- Passed: )(\d+)", output):
+                LOGGER.info("Ran: %s tests in %s sec.", num_tests, match[1])
+            for match in re.findall(r"(- Passed: )(\d+)", output):
                 num_success = match[1]
-                logger.info("".join(match))
-            for match in re.findall("(- Skipped: )(\d+)", output):
+                LOGGER.info("".join(match))
+            for match in re.findall(r"(- Skipped: )(\d+)", output):
                 num_skipped = match[1]
-                logger.info("".join(match))
-            for match in re.findall("(- Failed: )(\d+)", output):
+                LOGGER.info("".join(match))
+            for match in re.findall(r"(- Failed: )(\d+)", output):
                 num_failures = match[1]
-                logger.info("".join(match))
+                LOGGER.info("".join(match))
             success_testcases = ""
             for match in re.findall(r"\{0\}(.*?)[. ]*ok", output):
                 success_testcases += match + ", "
@@ -123,7 +134,7 @@ class RefstackClient(testcase.OSGCTestCase):
             try:
                 self.result = 100 * int(num_success) / int(num_executed)
             except ZeroDivisionError:
-                logger.error("No test has been executed")
+                LOGGER.error("No test has been executed")
 
             self.details = {"tests": int(num_tests),
                             "failures": int(num_failures),
@@ -133,12 +144,17 @@ class RefstackClient(testcase.OSGCTestCase):
         except Exception:
             self.result = 0
 
-        logger.info("Testcase %s success_rate is %s%%"
-                    % (self.case_name, self.result))
+        LOGGER.info("Testcase %s success_rate is %s%%",
+                    self.case_name, self.result)
 
-    def run(self):
-        '''used for functest command line,
-           functest testcase run refstack_defcore'''
+    @energy.enable_recording
+    def run(self, **kwargs):
+        """
+        Start RefstackClient testcase.
+
+        used for functest command line,
+        functest testcase run refstack_defcore
+        """
         self.start_time = time.time()
 
         if not os.path.exists(conf_utils.REFSTACK_RESULTS_DIR):
@@ -150,59 +166,64 @@ class RefstackClient(testcase.OSGCTestCase):
             self.run_defcore_default()
             self.parse_refstack_result()
             res = testcase.TestCase.EX_OK
-        except Exception as e:
-            logger.error('Error with run: %s', e)
+        except Exception:
+            LOGGER.exception("Error with run")
             res = testcase.TestCase.EX_RUN_ERROR
 
         self.stop_time = time.time()
         return res
 
     def _prep_test(self):
-        '''Check that the config file exists.'''
+        """Check that the config file exists."""
         if not os.path.isfile(self.confpath):
-            logger.error("Conf file not valid: %s" % self.confpath)
+            LOGGER.error("Conf file not valid: %s", self.confpath)
         if not os.path.isfile(self.testlist):
-            logger.error("testlist file not valid: %s" % self.testlist)
+            LOGGER.error("testlist file not valid: %s", self.testlist)
 
     def main(self, **kwargs):
-        '''used for manually running,
+        """
+        Execute RefstackClient testcase manually.
+
+        used for manually running,
            python refstack_client.py -c <tempest_conf_path>
            --testlist <testlist_path>
            can generate a reference refstack_tempest.conf by
            python tempest_conf.py
-        '''
+        """
         try:
             self.confpath = kwargs['config']
             self.testlist = kwargs['testlist']
-        except KeyError as e:
-            logger.error("Cannot run refstack client. Please check "
-                         "%s", e)
+        except KeyError as exc:
+            LOGGER.error("Cannot run refstack client. Please check "
+                         "%s", exc)
             return self.EX_RUN_ERROR
         try:
             self._prep_test()
             self.run_defcore(self.confpath, self.testlist)
             res = testcase.TestCase.EX_OK
-        except Exception as e:
-            logger.error('Error with run: %s', e)
+        except Exception as exc:
+            LOGGER.error('Error with run: %s', exc)
             res = testcase.TestCase.EX_RUN_ERROR
 
         return res
 
 
-class RefstackClientParser(object):
+class RefstackClientParser(object):  # pylint: disable=too-few-public-methods
+    """Command line argument parser helper."""
 
     def __init__(self):
-        self.FUNCTEST_TEST = pkg_resources.resource_filename(
+        """Initialize helper object."""
+        self.functest_test = pkg_resources.resource_filename(
             'functest', 'opnfv_tests')
-        self.CONF_PATH = pkg_resources.resource_filename(
+        self.conf_path = pkg_resources.resource_filename(
             'functest',
             'opnfv_tests/openstack/refstack_client/refstack_tempest.conf')
-        self.DEFCORE_LIST = pkg_resources.resource_filename(
+        self.defcore_list = pkg_resources.resource_filename(
             'functest', 'opnfv_tests/openstack/refstack_client/defcore.txt')
-        self.confpath = os.path.join(self.FUNCTEST_TEST,
-                                     self.CONF_PATH)
-        self.defcorelist = os.path.join(self.FUNCTEST_TEST,
-                                        self.DEFCORE_LIST)
+        self.confpath = os.path.join(self.functest_test,
+                                     self.conf_path)
+        self.defcorelist = os.path.join(self.functest_test,
+                                        self.defcore_list)
         self.parser = argparse.ArgumentParser()
         self.parser.add_argument(
             '-c', '--config',
@@ -215,11 +236,13 @@ class RefstackClientParser(object):
                  'should be tested.',
             default=self.defcorelist)
 
-    def parse_args(self, argv=[]):
+    def parse_args(self, argv=None):
+        """Parse command line arguments."""
         return vars(self.parser.parse_args(argv))
 
 
 def main():
+    """Run RefstackClient testcase with CLI."""
     logging.basicConfig()
     refstackclient = RefstackClient()
     parser = RefstackClientParser()
diff --git a/functest/opnfv_tests/openstack/vping/vping_ssh.py b/functest/opnfv_tests/openstack/vping/vping_ssh.py
index d4c39ad2..5cacddb5 100644
--- a/functest/opnfv_tests/openstack/vping/vping_ssh.py
+++ b/functest/opnfv_tests/openstack/vping/vping_ssh.py
@@ -7,13 +7,25 @@
 #
 # http://www.apache.org/licenses/LICENSE-2.0
 
-import os
-import pkg_resources
-from scp import SCPClient
+
+"""vPingSSH testcase."""
+
+# This 1st import is here simply for pep8 as the 'os' package import appears
+# to be required for mock and the unit tests will fail without it
+import os  # noqa # pylint: disable=unused-import
 import time
 
+from scp import SCPClient
+import pkg_resources
+
+from functest.core.testcase import TestCase
+from functest.energy import energy
+from functest.opnfv_tests.openstack.snaps import snaps_utils
+from functest.opnfv_tests.openstack.vping import vping_base
+from functest.utils.constants import CONST
 from snaps.openstack.create_instance import FloatingIpSettings, \
     VmInstanceSettings
+
 from snaps.openstack.create_keypairs import KeypairSettings
 from snaps.openstack.create_network import PortSettings
 from snaps.openstack.create_router import RouterSettings
@@ -21,24 +33,17 @@ from snaps.openstack.create_security_group import Direction, Protocol, \
     SecurityGroupSettings, SecurityGroupRuleSettings
 from snaps.openstack.utils import deploy_utils
 
-from functest.core.testcase import TestCase
-from functest.opnfv_tests.openstack.snaps import snaps_utils
-from functest.opnfv_tests.openstack.vping import vping_base
-from functest.utils.constants import CONST
-
 
 class VPingSSH(vping_base.VPingBase):
     """
+    VPingSSH testcase implementation.
+
     Class to execute the vPing test using a Floating IP to connect to one VM
     to issue the ping command to the second
     """
 
     def __init__(self, **kwargs):
-
-        # This line is here simply for pep8 as the 'os' package import appears
-        # to be required for mock and the unit tests will fail without it
-        os.environ
-
+        """Initialize testcase."""
         if "case_name" not in kwargs:
             kwargs["case_name"] = "vping_ssh"
         super(VPingSSH, self).__init__(**kwargs)
@@ -51,8 +56,11 @@ class VPingSSH(vping_base.VPingBase):
         self.sg_name = CONST.__getattribute__('vping_sg_name') + self.guid
         self.sg_desc = CONST.__getattribute__('vping_sg_desc')
 
+    @energy.enable_recording
     def run(self):
         """
+        Excecute VPingSSH testcase.
+
         Sets up the OpenStack keypair, router, security group, and VM instance
         objects then validates the ping.
         :return: the exit code from the super.execute() method
@@ -60,7 +68,8 @@ class VPingSSH(vping_base.VPingBase):
         try:
             super(VPingSSH, self).run()
 
-            self.logger.info("Creating keypair with name: '%s'" % self.kp_name)
+            log = "Creating keypair with name: '%s'" % self.kp_name
+            self.logger.info(log)
             kp_creator = deploy_utils.create_keypair(
                 self.os_creds,
                 KeypairSettings(name=self.kp_name,
@@ -69,8 +78,8 @@ class VPingSSH(vping_base.VPingBase):
             self.creators.append(kp_creator)
 
             # Creating router to external network
-            self.logger.info("Creating router with name: '%s'"
-                             % self.router_name)
+            log = "Creating router with name: '%s'" % self.router_name
+            self.logger.info(log)
             net_set = self.network_creator.network_settings
             sub_set = [net_set.subnet_settings[0].name]
             ext_net_name = snaps_utils.get_ext_net_name(self.os_creds)
@@ -93,9 +102,9 @@ class VPingSSH(vping_base.VPingBase):
                 ssh_connect_timeout=self.vm_ssh_connect_timeout,
                 port_settings=[port1_settings])
 
-            self.logger.info(
-                "Creating VM 1 instance with name: '%s'"
-                % instance1_settings.name)
+            log = ("Creating VM 1 instance with name: '%s'"
+                   % instance1_settings.name)
+            self.logger.info(log)
             self.vm1_creator = deploy_utils.create_vm_instance(
                 self.os_creds,
                 instance1_settings,
@@ -122,9 +131,9 @@ class VPingSSH(vping_base.VPingBase):
                     port_name=port2_settings.name,
                     router_name=router_creator.router_settings.name)])
 
-            self.logger.info(
-                "Creating VM 2 instance with name: '%s'"
-                % instance2_settings.name)
+            log = ("Creating VM 2 instance with name: '%s'"
+                   % instance2_settings.name)
+            self.logger.info(log)
             self.vm2_creator = deploy_utils.create_vm_instance(
                 self.os_creds,
                 instance2_settings,
@@ -133,14 +142,16 @@ class VPingSSH(vping_base.VPingBase):
             self.creators.append(self.vm2_creator)
 
             return self._execute()
-        except Exception as e:
-            self.logger.error('Unexpected error running test - ' + e.message)
+        except Exception as exc:  # pylint: disable=broad-except
+            self.logger.error('Unexpected error running test - ' + exc.message)
             return TestCase.EX_RUN_ERROR
         finally:
             self._cleanup()
 
     def _do_vping(self, vm_creator, test_ip):
         """
+        Execute ping command.
+
         Override from super
         """
         if vm_creator.vm_ssh_active(block=True):
@@ -153,6 +164,8 @@ class VPingSSH(vping_base.VPingBase):
 
     def _transfer_ping_script(self, ssh):
         """
+        Transfert vping script to VM.
+
         Uses SCP to copy the ping script via the SSH client
         :param ssh: the SSH client
         :return:
@@ -163,11 +176,12 @@ class VPingSSH(vping_base.VPingBase):
             'functest.opnfv_tests.openstack.vping', 'ping.sh')
         try:
             scp.put(ping_script, "~/")
-        except:
-            self.logger.error("Cannot SCP the file '%s'" % ping_script)
+        except Exception:
+            self.logger.error("Cannot SCP the file '%s'", ping_script)
             return False
 
         cmd = 'chmod 755 ~/ping.sh'
+        # pylint: disable=unused-variable
         (stdin, stdout, stderr) = ssh.exec_command(cmd)
         for line in stdout.readlines():
             print line
@@ -176,6 +190,8 @@ class VPingSSH(vping_base.VPingBase):
 
     def _do_vping_ssh(self, ssh, test_ip):
         """
+        Execute ping command via SSH.
+
         Pings the test_ip via the SSH client
         :param ssh: the SSH client used to issue the ping command
         :param test_ip: the IP for the ping command to use
@@ -190,7 +206,7 @@ class VPingSSH(vping_base.VPingBase):
 
         while True:
             time.sleep(1)
-            (stdin, stdout, stderr) = ssh.exec_command(cmd)
+            (_, stdout, _) = ssh.exec_command(cmd)
             output = stdout.readlines()
 
             for line in output:
@@ -206,12 +222,15 @@ class VPingSSH(vping_base.VPingBase):
                     break
             if flag:
                 break
-            self.logger.debug("Pinging %s. Waiting for response..." % test_ip)
+            log = "Pinging %s. Waiting for response..." % test_ip
+            self.logger.debug(log)
             sec += 1
         return exit_code
 
     def __create_security_group(self):
         """
+        Configure OpenStack security groups.
+
         Configures and deploys an OpenStack security group object
         :return: the creator object
         """
@@ -231,7 +250,8 @@ class VPingSSH(vping_base.VPingBase):
                                       protocol=Protocol.tcp, port_range_min=22,
                                       port_range_max=22))
 
-        self.logger.info("Security group with name: '%s'" % self.sg_name)
+        log = "Security group with name: '%s'" % self.sg_name
+        self.logger.info(log)
         return deploy_utils.create_security_group(self.os_creds,
                                                   SecurityGroupSettings(
                                                       name=self.sg_name,