Remove six murano/packages

Depends-On: https://review.opendev.org/#/c/720860/
Change-Id: I88d5b21c24780223196ff3bb7c629f404c343f14

murano/packages/exceptions.py

@@ -13,15 +13,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import six
-
 import murano.common.exceptions as e
 
 
 class PackageException(e.Error):
-    if six.PY2:
-        def __str__(self):
-            return six.text_type(self.message).encode('UTF-8')
+    pass
 
 
 class PackageClassLoadError(PackageException):

murano/packages/hot_package.py

@@ -16,7 +16,6 @@ import os
 import shutil
 import sys
 
-import six
 import yaml
 
 from murano.common.helpers import path
@@ -253,7 +252,7 @@ class HotPackage(package_base.PackageBase):
 
     @staticmethod
     def _format_value(value):
-        if isinstance(value, six.string_types):
+        if isinstance(value, str):
             return str("'" + value + "'")
         return str(value)
 

murano/packages/load_utils.py

@@ -19,11 +19,11 @@ import sys
 import tempfile
 import zipfile
 
-import six
 import yaml
 
 from murano.common.helpers import path
 from murano.common.plugins import package_types_loader
+from murano.common import utils
 import murano.packages.exceptions as e
 import murano.packages.hot_package
 import murano.packages.mpl_package
@@ -93,7 +93,7 @@ def load_from_dir(source_directory, filename='manifest.yaml'):
             content = yaml.safe_load(stream)
     except Exception as ex:
         trace = sys.exc_info()[2]
-        six.reraise(
+        utils.reraise(
             e.PackageLoadError,
             e.PackageLoadError("Unable to load due to '{0}'".format(ex)),
             trace)

murano/packages/package.py

@@ -18,8 +18,6 @@ import io
 import os
 import zipfile
 
-import six
-
 from murano.common.helpers import path
 
 
@@ -29,8 +27,7 @@ class PackageType(object):
     ALL = [Library, Application]
 
 
-@six.add_metaclass(abc.ABCMeta)
-class Package(object):
+class Package(object, metaclass=abc.ABCMeta):
     def __init__(self, format_name, runtime_version, source_directory):
         self._source_directory = source_directory
         self._format_name = format_name

murano/packages/package_base.py

@@ -20,10 +20,10 @@ import re
 import sys
 
 import semantic_version
-import six
 
 from murano.common.helpers import path
 from murano.common.i18n import _
+from murano.common import utils
 from murano.packages import exceptions
 from murano.packages import package
 
@@ -153,10 +153,11 @@ class PackageBase(package.Package):
 
         except Exception as ex:
             trace = sys.exc_info()[2]
-            six.reraise(exceptions.PackageLoadError,
-                        exceptions.PackageLoadError(
-                            'Unable to load {0}: {1}'.format(what_image, ex)),
-                        trace)
+            utils.reraise(
+                exceptions.PackageLoadError,
+                exceptions.PackageLoadError(
+                    'Unable to load {0}: {1}'.format(what_image, ex)),
+                trace)
 
     @staticmethod
     def _check_full_name(full_name):

murano/tests/unit/packages/test_exceptions.py

@@ -13,8 +13,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import six
-
 from murano.packages import exceptions
 import murano.tests.unit.base as test_base
 
@@ -28,10 +26,7 @@ class TestExceptions(test_base.MuranoTestCase):
                                                  message=message)
         expected = 'Unable to load class "{0}" from package: {1}'\
                    .format(class_name, message)
-        if six.PY2:
-            self.assertEqual(expected, error.message)
-        elif six.PY34:
-            self.assertEqual(expected, error.args[0])
+        self.assertEqual(expected, error.args[0])
 
     def test_package_ui_load_error(self):
         messages = ['', 'test_message']
@@ -40,10 +35,7 @@ class TestExceptions(test_base.MuranoTestCase):
             expected = 'Unable to load ui definition from package'
             if message:
                 expected += ': {0}'.format(message)
-            if six.PY2:
-                self.assertEqual(expected, error.message)
-            elif six.PY34:
-                self.assertEqual(expected, error.args[0])
+            self.assertEqual(expected, error.args[0])
 
     def test_package_format_error(self):
         messages = ['', 'test_message']
@@ -52,7 +44,4 @@ class TestExceptions(test_base.MuranoTestCase):
             expected = 'Incorrect package format'
             if message:
                 expected += ': {0}'.format(message)
-            if six.PY2:
-                self.assertEqual(expected, error.message)
-            elif six.PY34:
-                self.assertEqual(expected, error.args[0])
+            self.assertEqual(expected, error.args[0])