Use oslo.log library instead of system logging module

The constants of log levels were added in the 1.8 version of
the oslo.log library. So we can replace all usage of system
logging module with log module from oslo.log.

Change-Id: Ide50502f020eb1309648f4f9fc8a9c17aa1a1d9c

tempest/api/compute/volumes/test_attach_volume.py

@@ -13,7 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import logging
+from oslo_log import log as logging
 import testtools
 
 from tempest.api.compute import base

tempest/config.py

@@ -16,7 +16,6 @@
 from __future__ import print_function
 
 import functools
-import logging as std_logging
 import os
 import tempfile
 
@@ -1196,7 +1195,7 @@ class TempestConfigPrivate(object):
         register_opts()
         self._set_attrs()
         if parse_conf:
-            _CONF.log_opt_values(LOG, std_logging.DEBUG)
+            _CONF.log_opt_values(LOG, logging.DEBUG)
 
 
 class TempestConfigProxy(object):
@@ -1204,14 +1203,14 @@ class TempestConfigProxy(object):
     _path = None
 
     _extra_log_defaults = [
-        ('paramiko.transport', std_logging.INFO),
-        ('requests.packages.urllib3.connectionpool', std_logging.WARN),
+        ('paramiko.transport', logging.INFO),
+        ('requests.packages.urllib3.connectionpool', logging.WARN),
     ]
 
     def _fix_log_levels(self):
         """Tweak the oslo log defaults."""
         for name, level in self._extra_log_defaults:
-            std_logging.getLogger(name).setLevel(level)
+            logging.getLogger(name).logger.setLevel(level)
 
     def __getattr__(self, attr):
         if not self._config:

tempest/lib/cli/base.py

@@ -13,11 +13,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import logging
 import os
 import shlex
 import subprocess
 
+from oslo_log import log as logging
 import six
 
 from tempest.lib import base

tempest/lib/cli/output_parser.py

@@ -15,9 +15,10 @@
 
 """Collection of utilities for parsing CLI clients output."""
 
-import logging
 import re
 
+from oslo_log import log as logging
+
 from tempest.lib import exceptions
 
 

tempest/lib/common/rest_client.py

@@ -16,7 +16,6 @@
 
 import collections
 import email.utils
-import logging as real_logging
 import re
 import time
 
@@ -455,7 +454,7 @@ class RestClient(object):
 
         # Also look everything at DEBUG if you want to filter this
         # out, don't run at debug.
-        if self.LOG.isEnabledFor(real_logging.DEBUG):
+        if self.LOG.isEnabledFor(logging.DEBUG):
             self._log_request_full(resp, req_headers, req_body,
                                    resp_body, extra)
 

tempest/lib/services/clients.py

@@ -17,7 +17,8 @@
 import copy
 import importlib
 import inspect
-import logging
+
+from oslo_log import log as logging
 
 from tempest.lib import auth
 from tempest.lib.common.utils import misc

tempest/test_discover/plugins.py

@@ -13,8 +13,8 @@
 # under the License.
 
 import abc
-import logging
 
+from oslo_log import log as logging
 import six
 import stevedore