Remove Python 2 support

Python 2 has been deprecated. This patch removes all
traces of six, unicode strings and Python 2 tweaks.

Change-Id: Ia51ce13bcf1fa92f9c4d0617eb0ff434f2e15226

doc/source/conf.py

@@ -36,7 +36,7 @@ source_suffix = '.rst'
 master_doc = 'index'
 
 # General information about the project.
-copyright = u'2015, Sahara team'
+copyright = '2015, Sahara team'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
@@ -154,8 +154,8 @@ htmlhelp_basename = 'saharasparkplugin-testsdoc'
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title, author, documentclass [howto/manual]).
 latex_documents = [
-  ('index', 'doc-sahara-plugin-spark.tex', u'Sahara Spark Plugin Documentation',
-   u'Sahara team', 'manual'),
+  ('index', 'doc-sahara-plugin-spark.tex', 'Sahara Spark Plugin Documentation',
+   'Sahara team', 'manual'),
 ]
 
 # The name of an image file (relative to this directory) to place at the top of
@@ -185,8 +185,8 @@ smartquotes_excludes = {'builders': ['latex']}
 # One entry per manual page. List of tuples
 # (source start file, name, description, authors, manual section).
 man_pages = [
-    ('index', 'sahara-plugin-spark', u'sahara-plugin-spark Documentation',
-     [u'Sahara team'], 1)
+    ('index', 'sahara-plugin-spark', 'sahara-plugin-spark Documentation',
+     ['Sahara team'], 1)
 ]
 
 # If true, show URL addresses after external links.
@@ -199,8 +199,8 @@ man_pages = [
 # (source start file, target name, title, author,
 #  dir menu entry, description, category)
 texinfo_documents = [
-  ('index', 'sahara-plugin-spark', u'sahara-plugin-spark Documentation',
-   u'Sahara team', 'sahara-plugin-spark', 'One line description of project.',
+  ('index', 'sahara-plugin-spark', 'sahara-plugin-spark Documentation',
+   'Sahara team', 'sahara-plugin-spark', 'One line description of project.',
    'Miscellaneous'),
 ]
 

releasenotes/source/conf.py

@@ -33,7 +33,7 @@ source_suffix = '.rst'
 master_doc = 'index'
 
 # General information about the project.
-copyright = u'2015, Sahara Developers'
+copyright = '2015, Sahara Developers'
 
 # Release do not need a version number in the title, they
 # cover multiple versions.
@@ -142,8 +142,8 @@ htmlhelp_basename = 'SaharaSparkReleaseNotesdoc'
 #  author, documentclass [howto, manual, or own class]).
 latex_documents = [
     ('index', 'SaharaSparkReleaseNotes.tex',
-     u'Sahara Spark Plugin Release Notes Documentation',
-     u'Sahara Developers', 'manual'),
+     'Sahara Spark Plugin Release Notes Documentation',
+     'Sahara Developers', 'manual'),
 ]
 
 # The name of an image file (relative to this directory) to place at the top of
@@ -173,8 +173,8 @@ latex_documents = [
 # (source start file, name, description, authors, manual section).
 man_pages = [
     ('index', 'saharasparkreleasenotes',
-     u'Sahara Spark Plugin Release Notes Documentation',
-     [u'Sahara Developers'], 1)
+     'Sahara Spark Plugin Release Notes Documentation',
+     ['Sahara Developers'], 1)
 ]
 
 # If true, show URL addresses after external links.
@@ -188,8 +188,8 @@ man_pages = [
 #  dir menu entry, description, category)
 texinfo_documents = [
     ('index', 'SaharaSparkReleaseNotes',
-     u'Sahara Spark Plugin Release Notes Documentation',
-     u'Sahara Developers', 'SaharaSparkReleaseNotes',
+     'Sahara Spark Plugin Release Notes Documentation',
+     'Sahara Developers', 'SaharaSparkReleaseNotes',
      'One line description of project.',
      'Miscellaneous'),
 ]

requirements.txt

@@ -12,4 +12,3 @@ oslo.serialization!=2.19.1,>=2.18.0 # Apache-2.0
 oslo.utils>=3.33.0 # Apache-2.0
 requests>=2.14.2 # Apache-2.0
 sahara>=10.0.0.0b1
-six>=1.10.0 # MIT

sahara_plugin_spark/plugins/spark/config_helper.py

@@ -15,7 +15,6 @@
 
 from oslo_config import cfg
 from oslo_log import log as logging
-import six
 
 from sahara.plugins import provisioning as p
 from sahara.plugins import swift_helper as swift
@@ -184,7 +183,7 @@ PRIORITY_1_CONFS += CLUSTER_WIDE_CONFS
 
 def _initialise_configs():
     configs = []
-    for service, config_lists in six.iteritems(XML_CONFS):
+    for service, config_lists in XML_CONFS.items():
         for config_list in config_lists:
             for config in config_list:
                 if config['name'] not in HIDDEN_CONFS:
@@ -204,13 +203,13 @@ def _initialise_configs():
                         cfg.priority = 1
                     configs.append(cfg)
 
-    for service, config_items in six.iteritems(ENV_CONFS):
-        for name, param_format_str in six.iteritems(config_items):
+    for service, config_items in ENV_CONFS.items():
+        for name, param_format_str in config_items.items():
             configs.append(p.Config(name, service, "node",
                                     default_value=1024, priority=1,
                                     config_type="int"))
 
-    for service, config_items in six.iteritems(SPARK_CONFS):
+    for service, config_items in SPARK_CONFS.items():
         for item in config_items['OPTIONS']:
             cfg = p.Config(name=item["name"],
                            description=item["description"],
@@ -279,7 +278,7 @@ def generate_xml_configs(configs, storage_path, nn_hostname, hadoop_port):
     if is_swift_enabled(configs):
         swft_def = SWIFT_DEFAULTS
         swift_configs = extract_name_values(swift.get_swift_configs())
-        for key, value in six.iteritems(swift_configs):
+        for key, value in swift_configs.items():
             if key not in cfg:
                 cfg[key] = value
 

sahara_plugin_spark/plugins/spark/edp_engine.py

@@ -16,8 +16,6 @@
 
 import os
 
-import six
-
 from sahara.plugins import edp
 from sahara.plugins import exceptions as ex
 from sahara.plugins import utils as plugin_utils
@@ -37,7 +35,7 @@ class EdpEngine(edp.PluginsSparkJobEngine):
             get_config_value_or_default("Spark", "Spark home", self.cluster),
             "bin/spark-submit")
         self.plugin_params["deploy-mode"] = "client"
-        port_str = six.text_type(
+        port_str = str(
             plugin_utils.get_config_value_or_default(
                 "Spark", "Master port", self.cluster))
         self.plugin_params["master"] = ('spark://%(host)s:' + port_str)

sahara_plugin_spark/plugins/spark/scaling.py

@@ -15,8 +15,6 @@
 
 import os
 
-import six
-
 from sahara.plugins import context
 from sahara.plugins import utils
 from sahara_plugin_spark.i18n import _
@@ -94,7 +92,7 @@ def parse_dfs_report(cmd_output):
 
     res = []
     datanode_info = {}
-    for i in six.moves.xrange(0, len(array)):
+    for i in range(0, len(array)):
         if array[i]:
             idx = str.find(array[i], ':')
             name = array[i][0:idx]