Update common.importutils from openstack-common.

This patch updates common.importutils from openstack-common.  The change
was to remove the usage of common.exception.  The rest of the patch
includes the changes required in nova to no longer use common.exception,
as well.

Change-Id: Iacd186b2c466cba84248ae10589ffbb5a9cec0ba

nova/notifier/list_notifier.py

@@ -16,7 +16,6 @@
 from nova import flags
 from nova import log as logging
 from nova.openstack.common import cfg
-from nova.openstack.common import exception as common_exception
 from nova.openstack.common import importutils
 
 

nova/openstack/common/exception.py

@@ -1,147 +0,0 @@
-# vim: tabstop=4 shiftwidth=4 softtabstop=4
-
-# Copyright 2011 OpenStack LLC.
-# All Rights Reserved.
-#
-#    Licensed under the Apache License, Version 2.0 (the "License"); you may
-#    not use this file except in compliance with the License. You may obtain
-#    a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-#    Unless required by applicable law or agreed to in writing, software
-#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-#    License for the specific language governing permissions and limitations
-#    under the License.
-
-"""
-Exceptions common to OpenStack projects
-"""
-
-import logging
-
-
-class ProcessExecutionError(IOError):
-    def __init__(self, stdout=None, stderr=None, exit_code=None, cmd=None,
-                 description=None):
-        if description is None:
-            description = "Unexpected error while running command."
-        if exit_code is None:
-            exit_code = '-'
-        message = "%s\nCommand: %s\nExit code: %s\nStdout: %r\nStderr: %r" % (
-                  description, cmd, exit_code, stdout, stderr)
-        IOError.__init__(self, message)
-
-
-class Error(Exception):
-    def __init__(self, message=None):
-        super(Error, self).__init__(message)
-
-
-class ApiError(Error):
-    def __init__(self, message='Unknown', code='Unknown'):
-        self.message = message
-        self.code = code
-        super(ApiError, self).__init__('%s: %s' % (code, message))
-
-
-class NotFound(Error):
-    pass
-
-
-class UnknownScheme(Error):
-
-    msg = "Unknown scheme '%s' found in URI"
-
-    def __init__(self, scheme):
-        msg = self.__class__.msg % scheme
-        super(UnknownScheme, self).__init__(msg)
-
-
-class BadStoreUri(Error):
-
-    msg = "The Store URI %s was malformed. Reason: %s"
-
-    def __init__(self, uri, reason):
-        msg = self.__class__.msg % (uri, reason)
-        super(BadStoreUri, self).__init__(msg)
-
-
-class Duplicate(Error):
-    pass
-
-
-class NotAuthorized(Error):
-    pass
-
-
-class NotEmpty(Error):
-    pass
-
-
-class Invalid(Error):
-    pass
-
-
-class BadInputError(Exception):
-    """Error resulting from a client sending bad input to a server"""
-    pass
-
-
-class MissingArgumentError(Error):
-    pass
-
-
-class DatabaseMigrationError(Error):
-    pass
-
-
-class ClientConnectionError(Exception):
-    """Error resulting from a client connecting to a server"""
-    pass
-
-
-def wrap_exception(f):
-    def _wrap(*args, **kw):
-        try:
-            return f(*args, **kw)
-        except Exception, e:
-            if not isinstance(e, Error):
-                #exc_type, exc_value, exc_traceback = sys.exc_info()
-                logging.exception('Uncaught exception')
-                #logging.error(traceback.extract_stack(exc_traceback))
-                raise Error(str(e))
-            raise
-    _wrap.func_name = f.func_name
-    return _wrap
-
-
-class OpenstackException(Exception):
-    """
-    Base Exception
-
-    To correctly use this class, inherit from it and define
-    a 'message' property. That message will get printf'd
-    with the keyword arguments provided to the constructor.
-    """
-    message = "An unknown exception occurred"
-
-    def __init__(self, **kwargs):
-        try:
-            self._error_string = self.message % kwargs
-
-        except Exception:
-            # at least get the core message out if something happened
-            self._error_string = self.message
-
-    def __str__(self):
-        return self._error_string
-
-
-class MalformedRequestBody(OpenstackException):
-    message = "Malformed message body: %(reason)s"
-
-
-class InvalidContentType(OpenstackException):
-    message = "Invalid content type %(content_type)s"

nova/openstack/common/importutils.py

@@ -21,8 +21,6 @@ Import related utilities and helper functions.
 
 import sys
 
-from nova.openstack.common import exception
-
 
 def import_class(import_str):
     """Returns a class from a string including module and class"""
@@ -30,8 +28,9 @@ def import_class(import_str):
     try:
         __import__(mod_str)
         return getattr(sys.modules[mod_str], class_str)
-    except (ImportError, ValueError, AttributeError):
-        raise exception.NotFound('Class %s cannot be found' % class_str)
+    except (ImportError, ValueError, AttributeError), exc:
+        raise ImportError('Class %s cannot be found (%s)' %
+                (class_str, str(exc)))
 
 
 def import_object(import_str, *args, **kwargs):

nova/scheduler/filter_scheduler.py

@@ -25,7 +25,6 @@ from nova import exception
 from nova import flags
 from nova import log as logging
 from nova.notifier import api as notifier
-from nova.openstack.common import exception as common_exception
 from nova.openstack.common import importutils
 from nova.scheduler import driver
 from nova.scheduler import least_cost
@@ -245,7 +244,7 @@ class FilterScheduler(driver.Scheduler):
                 # the weighing function can be any non-class callable
                 # (i.e., no 'self')
                 cost_fn = importutils.import_class(cost_fn_str)
-            except common_exception.NotFound:
+            except ImportError:
                 raise exception.SchedulerCostFunctionNotFound(
                         cost_fn_str=cost_fn_str)
 

nova/tests/scheduler/test_host_filters.py

@@ -20,7 +20,6 @@ import json
 from nova import context
 from nova import exception
 from nova import flags
-from nova.openstack.common import exception as common_exception
 from nova.scheduler import filters
 from nova import test
 from nova.tests.scheduler import fakes
@@ -65,7 +64,7 @@ class HostFiltersTestCase(test.TestCase):
         self.assertEqual(len(classes), 1 + len(self.class_map))
 
     def test_get_filter_classes_raises_on_invalid_classes(self):
-        self.assertRaises(common_exception.NotFound,
+        self.assertRaises(ImportError,
                 filters.get_filter_classes,
                 ['nova.tests.scheduler.test_host_filters.NoExist'])
         self.assertRaises(exception.ClassNotFound,

openstack-common.conf

@@ -1,7 +1,7 @@
 [DEFAULT]
 
 # The list of modules to copy from openstack-common
-modules=cfg,exception,local,importutils,iniparser
+modules=cfg,local,importutils,iniparser
 
 # The base module to hold the copy of openstack.common
 base=nova