Replace exception_to_str with oslo.utils function

The oslo.utils function has exception_to_unicode that can
replace glance util function exception_to_str.
So we don't to have this exception_to_str function in glance
anymore.

Change-Id: I332bc55558087920fdd6ae2d822bece5166f5ba6

glanceclient/common/utils.py

@@ -319,18 +319,6 @@ def make_size_human_readable(size):
     return '%s%s' % (stripped, suffix[index])
 
 
-def exception_to_str(exc):
-    try:
-        error = six.text_type(exc)
-    except UnicodeError:
-        try:
-            error = str(exc)
-        except UnicodeError:
-            error = ("Caught '%(exception)s' exception." %
-                     {"exception": exc.__class__.__name__})
-    return encodeutils.safe_decode(error, errors='ignore')
-
-
 def get_file_size(file_obj):
     """Analyze file-like object and attempt to determine its size.
 

glanceclient/shell.py

@@ -765,4 +765,4 @@ def main():
     except KeyboardInterrupt:
         utils.exit('... terminating glance client', exit_code=130)
     except Exception as e:
-        utils.exit(utils.exception_to_str(e))
+        utils.exit(encodeutils.exception_to_unicode(e))

glanceclient/tests/unit/test_utils.py

@@ -104,24 +104,6 @@ class TestUtils(testtools.TestCase):
 ''',
                          output_dict.getvalue())
 
-    def test_exception_to_str(self):
-        class FakeException(Exception):
-            def __str__(self):
-                raise UnicodeError()
-
-        ret = utils.exception_to_str(Exception('error message'))
-        self.assertEqual('error message', ret)
-
-        ret = utils.exception_to_str(Exception('\xa5 error message'))
-        if six.PY2:
-            self.assertEqual(' error message', ret)
-        else:
-            self.assertEqual('\xa5 error message', ret)
-
-        ret = utils.exception_to_str(FakeException('\xa5 error message'))
-        self.assertEqual("Caught '%(exception)s' exception." %
-                         {'exception': 'FakeException'}, ret)
-
     def test_schema_args_with_list_types(self):
         # NOTE(flaper87): Regression for bug
         # https://bugs.launchpad.net/python-glanceclient/+bug/1401032

glanceclient/v2/images.py

@@ -230,7 +230,7 @@ class Controller(object):
             try:
                 setattr(image, key, value)
             except warlock.InvalidOperation as e:
-                raise TypeError(utils.exception_to_str(e))
+                raise TypeError(encodeutils.exception_to_unicode(e))
 
         resp, body = self.http_client.post(url, data=image)
         # NOTE(esheffield): remove 'self' for now until we have an elegant
@@ -250,7 +250,7 @@ class Controller(object):
             try:
                 setattr(image, key, value)
             except warlock.InvalidOperation as e:
-                raise TypeError(utils.exception_to_str(e))
+                raise TypeError(encodeutils.exception_to_unicode(e))
 
         if remove_props:
             cur_props = image.keys()

glanceclient/v2/metadefs.py

@@ -45,7 +45,7 @@ class NamespaceController(object):
         try:
             namespace = self.model(kwargs)
         except (warlock.InvalidOperation, ValueError) as e:
-            raise TypeError(utils.exception_to_str(e))
+            raise TypeError(encodeutils.exception_to_unicode(e))
 
         resp, body = self.http_client.post(url, data=namespace)
         body.pop('self', None)
@@ -62,7 +62,7 @@ class NamespaceController(object):
             try:
                 setattr(namespace, key, value)
             except warlock.InvalidOperation as e:
-                raise TypeError(utils.exception_to_str(e))
+                raise TypeError(encodeutils.exception_to_unicode(e))
 
         # Remove read-only parameters.
         read_only = ['schema', 'updated_at', 'created_at']
@@ -192,7 +192,7 @@ class ResourceTypeController(object):
         try:
             res_type = self.model(kwargs)
         except (warlock.InvalidOperation, ValueError) as e:
-            raise TypeError(utils.exception_to_str(e))
+            raise TypeError(encodeutils.exception_to_unicode(e))
 
         url = '/v2/metadefs/namespaces/{0}/resource_types'.format(namespace,
                                                                   res_type)
@@ -244,7 +244,7 @@ class PropertyController(object):
         try:
             prop = self.model(kwargs)
         except (warlock.InvalidOperation, ValueError) as e:
-            raise TypeError(utils.exception_to_str(e))
+            raise TypeError(encodeutils.exception_to_unicode(e))
 
         url = '/v2/metadefs/namespaces/{0}/properties'.format(namespace)
 
@@ -264,7 +264,7 @@ class PropertyController(object):
             try:
                 setattr(prop, key, value)
             except warlock.InvalidOperation as e:
-                raise TypeError(utils.exception_to_str(e))
+                raise TypeError(encodeutils.exception_to_unicode(e))
 
         url = '/v2/metadefs/namespaces/{0}/properties/{1}'.format(namespace,
                                                                   prop_name)
@@ -324,7 +324,7 @@ class ObjectController(object):
         try:
             obj = self.model(kwargs)
         except (warlock.InvalidOperation, ValueError) as e:
-            raise TypeError(utils.exception_to_str(e))
+            raise TypeError(encodeutils.exception_to_unicode(e))
 
         url = '/v2/metadefs/namespaces/{0}/objects'.format(namespace)
 
@@ -344,7 +344,7 @@ class ObjectController(object):
             try:
                 setattr(obj, key, value)
             except warlock.InvalidOperation as e:
-                raise TypeError(utils.exception_to_str(e))
+                raise TypeError(encodeutils.exception_to_unicode(e))
 
         # Remove read-only parameters.
         read_only = ['schema', 'updated_at', 'created_at']
@@ -426,7 +426,7 @@ class TagController(object):
             try:
                 md_tag_list.append(self.model(name=tag_name))
             except (warlock.InvalidOperation) as e:
-                raise TypeError(utils.exception_to_str(e))
+                raise TypeError(encodeutils.exception_to_unicode(e))
         tags = {'tags': md_tag_list}
 
         url = '/v2/metadefs/namespaces/{0}/tags'.format(namespace)
@@ -448,7 +448,7 @@ class TagController(object):
             try:
                 setattr(tag, key, value)
             except warlock.InvalidOperation as e:
-                raise TypeError(utils.exception_to_str(e))
+                raise TypeError(encodeutils.exception_to_unicode(e))
 
         # Remove read-only parameters.
         read_only = ['updated_at', 'created_at']

glanceclient/v2/tasks.py

@@ -110,7 +110,7 @@ class Controller(object):
             try:
                 setattr(task, key, value)
             except warlock.InvalidOperation as e:
-                raise TypeError(utils.exception_to_str(e))
+                raise TypeError(encodeutils.exception_to_unicode(e))
 
         resp, body = self.http_client.post(url, data=task)
         # NOTE(flwang): remove 'self' for now until we have an elegant