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>

3 files changed, 15 insertions, 10 deletions

diff --git a/api/utils/common.py b/api/utils/common.py
index 6971c6dfe..1c800ce49 100644
--- a/api/utils/common.py
+++ b/api/utils/common.py
@@ -6,6 +6,7 @@
 # which accompanies this distribution, and is available at
 # http://www.apache.org/licenses/LICENSE-2.0
 ##############################################################################
+from __future__ import absolute_import
 import collections
 import logging
 
@@ -13,18 +14,19 @@ from flask import jsonify
 
 from api.utils.daemonthread import DaemonThread
 from yardstick.cmd.cli import YardstickCLI
+import six
 
 logger = logging.getLogger(__name__)
 
 
-def translate_to_str(object):
-    if isinstance(object, collections.Mapping):
-        return {str(k): translate_to_str(v) for k, v in object.items()}
-    elif isinstance(object, list):
-        return [translate_to_str(ele) for ele in object]
-    elif isinstance(object, unicode):
-        return str(object)
-    return object
+def translate_to_str(obj):
+    if isinstance(obj, collections.Mapping):
+        return {str(k): translate_to_str(v) for k, v in obj.items()}
+    elif isinstance(obj, list):
+        return [translate_to_str(ele) for ele in obj]
+    elif isinstance(obj, six.text_type):
+        return str(obj)
+    return obj
 
 
 def get_command_list(command_list, opts, args):
diff --git a/api/utils/daemonthread.py b/api/utils/daemonthread.py
index 19182c429..0049834eb 100644
--- a/api/utils/daemonthread.py
+++ b/api/utils/daemonthread.py
@@ -6,6 +6,7 @@
 # which accompanies this distribution, and is available at
 # http://www.apache.org/licenses/LICENSE-2.0
 ##############################################################################
+from __future__ import absolute_import
 import threading
 import os
 import errno
diff --git a/api/utils/influx.py b/api/utils/influx.py
index d4b070fb4..275c63a24 100644
--- a/api/utils/influx.py
+++ b/api/utils/influx.py
@@ -6,10 +6,12 @@
 # which accompanies this distribution, and is available at
 # http://www.apache.org/licenses/LICENSE-2.0
 ##############################################################################
+from __future__ import absolute_import
+
 import logging
-import ConfigParser
-from urlparse import urlsplit
 
+import six.moves.configparser as ConfigParser
+from six.moves.urllib.parse import urlsplit
 from influxdb import InfluxDBClient
 
 from api import conf