Replace deprecated datetime.utcnow()

The datetime.utcnow() is deprecated in Python 3.12.
Replace datetime.utcnow() with oslo_utils.timeutils.utcnow().
This bumps oslo.utils to 7.0.0.

Change-Id: Icccbb0549add686a744a72b354932471cbf91c92
Signed-off-by: Takashi Natsume <takanattie@gmail.com>

watcher/decision_engine/audit/continuous.py

@@ -19,9 +19,10 @@
 
 
 import datetime
-from dateutil import tz
 
 from croniter import croniter
+from dateutil import tz
+from oslo_utils import timeutils
 
 from watcher.common import context
 from watcher.common import scheduling
@@ -97,7 +98,7 @@ class ContinuousAuditHandler(base.AuditHandler):
     @staticmethod
     def _next_cron_time(audit):
         if utils.is_cron_like(audit.interval):
-            return croniter(audit.interval, datetime.datetime.utcnow()
+            return croniter(audit.interval, timeutils.utcnow()
                             ).get_next(datetime.datetime)
 
     @classmethod
@@ -111,7 +112,7 @@ class ContinuousAuditHandler(base.AuditHandler):
             finally:
                 if utils.is_int_like(audit.interval):
                     audit.next_run_time = (
-                        datetime.datetime.utcnow() +
+                        timeutils.utcnow() +
                         datetime.timedelta(seconds=int(audit.interval)))
                 else:
                     audit.next_run_time = self._next_cron_time(audit)
@@ -129,7 +130,7 @@ class ContinuousAuditHandler(base.AuditHandler):
                                **trigger_args)
 
     def check_audit_expired(self, audit):
-        current = datetime.datetime.utcnow()
+        current = timeutils.utcnow()
         # Note: if audit still didn't get into the timeframe,
         #       skip it
         if audit.start_time and audit.start_time > current:
@@ -196,7 +197,7 @@ class ContinuousAuditHandler(base.AuditHandler):
                     # to restore it after shutdown
                     if audit.next_run_time is not None:
                         old_run_time = audit.next_run_time
-                        current = datetime.datetime.utcnow()
+                        current = timeutils.utcnow()
                         if old_run_time < current:
                             delta = datetime.timedelta(
                                 seconds=(int(audit.interval) - (
@@ -206,7 +207,7 @@ class ContinuousAuditHandler(base.AuditHandler):
                         next_run_time = audit.next_run_time
                     # if audit is new one
                     else:
-                        next_run_time = datetime.datetime.utcnow()
+                        next_run_time = timeutils.utcnow()
                     self._add_job('interval', audit, audit_context,
                                   seconds=int(audit.interval),
                                   next_run_time=next_run_time)

watcher/decision_engine/datasources/ceilometer.py

@@ -158,7 +158,7 @@ class CeilometerHelper(base.DataSourceBase):
     def statistic_aggregation(self, resource=None, resource_type=None,
                               meter_name=None, period=300, granularity=300,
                               aggregate='mean'):
-        end_time = datetime.datetime.utcnow()
+        end_time = timeutils.utcnow()
         start_time = end_time - datetime.timedelta(seconds=int(period))
 
         meter = self._get_meter(meter_name)

watcher/decision_engine/datasources/gnocchi.py

@@ -16,12 +16,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from datetime import datetime
 from datetime import timedelta
 
 from gnocchiclient import exceptions as gnc_exc
 from oslo_config import cfg
 from oslo_log import log
+from oslo_utils import timeutils
 
 from watcher.common import clients
 from watcher.decision_engine.datasources import base
@@ -69,7 +69,7 @@ class GnocchiHelper(base.DataSourceBase):
     def statistic_aggregation(self, resource=None, resource_type=None,
                               meter_name=None, period=300, aggregate='mean',
                               granularity=300):
-        stop_time = datetime.utcnow()
+        stop_time = timeutils.utcnow()
         start_time = stop_time - timedelta(seconds=(int(period)))
 
         meter = self._get_meter(meter_name)

watcher/decision_engine/datasources/monasca.py

@@ -19,6 +19,7 @@
 import datetime
 
 from monascaclient import exc
+from oslo_utils import timeutils
 
 from watcher.common import clients
 from watcher.decision_engine.datasources import base
@@ -58,8 +59,7 @@ class MonascaHelper(base.DataSourceBase):
             period = int(datetime.timedelta(hours=3).total_seconds())
         if not start_time:
             start_time = (
-                datetime.datetime.utcnow() -
-                datetime.timedelta(seconds=period))
+                timeutils.utcnow() - datetime.timedelta(seconds=period))
 
         start_timestamp = None if not start_time else start_time.isoformat()
         end_timestamp = None if not end_time else end_time.isoformat()
@@ -86,7 +86,7 @@ class MonascaHelper(base.DataSourceBase):
     def statistic_aggregation(self, resource=None, resource_type=None,
                               meter_name=None, period=300, aggregate='mean',
                               granularity=300):
-        stop_time = datetime.datetime.utcnow()
+        stop_time = timeutils.utcnow()
         start_time = stop_time - datetime.timedelta(seconds=(int(period)))
 
         meter = self._get_meter(meter_name)