move nova.common.deprecated to openstack-common

Fixes bug #1070511

nova has a common deprecation path which lets you turn
deprecation warnings into fatal errors via config. Make
this a function of the openstack common log to make it
available to other projects in a standard way.

Include exception directly in logging module.

Update exception to work correctly now that it's not
based off of nova's exception class.

Change-Id: I699e776c99c429e60dfb5cd6c0cdbb661bae0ce8

1 files changed, 53 insertions, 0 deletions

diff --git a/tests/unit/test_deprecated.py b/tests/unit/test_deprecated.py
new file mode 100644
index 0000000..770a7b9
--- /dev/null
+++ b/tests/unit/test_deprecated.py
@@ -0,0 +1,53 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+#
+#    Copyright 2010 OpenStack LLC
+#
+#    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.
+
+from openstack.common import cfg
+from openstack.common import log as logging
+from tests import utils as test_utils
+
+LOG = logging.getLogger(__name__)
+
+
+class DeprecatedConfigTestCase(test_utils.BaseTestCase):
+    def setUp(self):
+        super(DeprecatedConfigTestCase, self).setUp()
+        self.warnbuffer = ""
+        self.critbuffer = ""
+
+        def warn_log(msg):
+            self.warnbuffer = msg
+
+        def critical_log(msg):
+            self.critbuffer = msg
+
+        self.stubs.Set(LOG, 'warn', warn_log)
+        self.stubs.Set(LOG, 'critical', critical_log)
+
+    def test_deprecated(self):
+        LOG.deprecated('test')
+        self.assertEqual(self.warnbuffer, 'Deprecated Config: test')
+
+    def test_deprecated_fatal(self):
+        self.config(fatal_deprecations=True)
+        self.assertRaises(logging.DeprecatedConfig,
+                          LOG.deprecated, "test2")
+        self.assertEqual(self.critbuffer, 'Deprecated Config: test2')
+
+    def test_deprecated_logs_only_once(self):
+        LOG.deprecated('only once!')
+        LOG.deprecated('only once!')
+        LOG.deprecated('only once!')
+        self.assertEqual(self.warnbuffer, 'Deprecated Config: only once!')