Add support for Python 3

Porting to Python3 using Openstack guidelines:
https://wiki.openstack.org/wiki/Python3

This passes unittests on Python 3.5 and passes opnfv_smoke suite

Updates:
   use six for urlparse and urlopen
   fix exception.message attribute removal
   run unittests on python3
   use unitest.mock on python 3
   fix open mock for vsperf
   fix float division by using delta/eplison comparison
   use unicode in StringIO
   use plugin/sample_config.yaml relative path from test case
   fixed apexlake unittests
   upgraded to mock 2.0.0 to match python3 unittest.mock features
   fixed flake8 issues
   implement safe JSON decode with oslo_serialization.jsonutils.dump_as_bytes()
   implement safe unicode encode/decode with oslo_utils.encodeutils

heat: convert pub key file from bytes to unicode
    pkg_resources returns raw bytes, in python3
    we have to decode this to utf-8 unicode
    so JSON can encode it for heat template

JIRA: YARDSTICK-452

Change-Id: Ib80dd1d0c0eb0592acd832b82f6a7f8f7c20bfda
Signed-off-by: Ross Brattain <ross.b.brattain@intel.com>

1 files changed, 8 insertions, 6 deletions

diff --git a/yardstick/vTC/apexlake/experimental_framework/benchmarking_unit.py b/yardstick/vTC/apexlake/experimental_framework/benchmarking_unit.py
index 1963696f8..d5de308c7 100644
--- a/yardstick/vTC/apexlake/experimental_framework/benchmarking_unit.py
+++ b/yardstick/vTC/apexlake/experimental_framework/benchmarking_unit.py
@@ -18,6 +18,7 @@ initialization, execution and finalization
 '''
 
 
+from __future__ import absolute_import
 import json
 import time
 import inspect
@@ -27,6 +28,7 @@ from experimental_framework import common
 # from experimental_framework import data_manager as data
 from experimental_framework import heat_template_generation as heat
 from experimental_framework import deployment_unit as deploy
+from six.moves import range
 
 
 class BenchmarkingUnit:
@@ -116,10 +118,10 @@ class BenchmarkingUnit:
         """
         common.LOG.info('Run Benchmarking Unit')
 
-        experiment = dict()
-        result = dict()
-        for iteration in range(0, self.iterations):
-            common.LOG.info('Iteration ' + str(iteration))
+        experiment = {}
+        result = {}
+        for iteration in range(self.iterations):
+            common.LOG.info('Iteration %s', iteration)
             for template_file_name in self.template_files:
                 experiment_name = BenchmarkingUnit.\
                     extract_experiment_name(template_file_name)
@@ -238,7 +240,7 @@ class BenchmarkingUnit:
         :return: (str) Experiment Name
         """
         strings = template_file_name.split('.')
-        return ".".join(strings[:(len(strings)-1)])
+        return ".".join(strings[:(len(strings) - 1)])
 
     @staticmethod
     def get_benchmark_class(complete_module_name):
@@ -253,7 +255,7 @@ class BenchmarkingUnit:
         """
         strings = complete_module_name.split('.')
         class_name = 'experimental_framework.benchmarks.{}'.format(strings[0])
-        pkg = __import__(class_name, globals(), locals(), [], -1)
+        pkg = __import__(class_name, globals(), locals(), [], 0)
         module = getattr(getattr(pkg, 'benchmarks'), strings[0])
         members = inspect.getmembers(module)
         for m in members: