Replace oslo_utils.timeutils

This change introduces glance.common.timeutils that provides the
timeutils previously consumed from oslo_utils.

Oslo is deprecating some timeutils functionality which of Glance
depends on. Suggested replacement (isoformat) would break glance APIs
so it's cleaner to carry this functionality in Glance rather than
re-invent the wheel.

Co-Authored-By: Erno Kuvaja <jokke@usr.fi>
Co-Authored-By: Sabari Kumar Murugesan <smurugesan@vmware.com>

Change-Id: I91e1cc9a273249fd88749cecf21200f3f5e2bab1

glance/api/v1/images.py

@@ -45,12 +45,12 @@ from glance.api.v1 import upload_utils
 from glance.common import exception
 from glance.common import property_utils
 from glance.common import store_utils
+from glance.common import timeutils
 from glance.common import utils
 from glance.common import wsgi
 from glance.i18n import _, _LE, _LI, _LW
 from glance import notifier
 import glance.registry.client.v1.api as registry
-from oslo_utils import timeutils
 
 LOG = logging.getLogger(__name__)
 SUPPORTED_PARAMS = glance.api.v1.SUPPORTED_PARAMS

glance/api/v2/image_members.py

@@ -19,12 +19,12 @@ import glance_store
 from oslo_log import log as logging
 from oslo_serialization import jsonutils
 from oslo_utils import encodeutils
-from oslo_utils import timeutils
 import six
 import webob
 
 from glance.api import policy
 from glance.common import exception
+from glance.common import timeutils
 from glance.common import utils
 from glance.common import wsgi
 import glance.db

glance/api/v2/images.py

@@ -20,7 +20,6 @@ from oslo_config import cfg
 from oslo_log import log as logging
 from oslo_serialization import jsonutils as json
 from oslo_utils import encodeutils
-from oslo_utils import timeutils
 import six
 import six.moves.urllib.parse as urlparse
 import webob.exc
@@ -28,6 +27,7 @@ import webob.exc
 from glance.api import policy
 from glance.common import exception
 from glance.common import location_strategy
+from glance.common import timeutils
 from glance.common import utils
 from glance.common import wsgi
 import glance.db

glance/api/v2/tasks.py

@@ -21,7 +21,6 @@ from oslo_config import cfg
 from oslo_log import log as logging
 import oslo_serialization.jsonutils as json
 from oslo_utils import encodeutils
-from oslo_utils import timeutils
 from oslo_utils import uuidutils
 import six
 import six.moves.urllib.parse as urlparse
@@ -30,6 +29,7 @@ import webob.exc
 from glance.api import common
 from glance.api import policy
 from glance.common import exception
+from glance.common import timeutils
 from glance.common import wsgi
 import glance.db
 import glance.gateway

glance/artifacts/domain/__init__.py

@@ -14,8 +14,7 @@
 
 import uuid
 
-from oslo_utils import timeutils
-
+from glance.common import timeutils
 from glance.i18n import _
 
 

glance/cmd/cache_manage.py

@@ -27,8 +27,8 @@ import sys
 import time
 
 from oslo_utils import encodeutils
-from oslo_utils import timeutils
 
+from glance.common import timeutils
 from glance.common import utils
 from six.moves import input
 

glance/common/rpc.py

@@ -23,12 +23,12 @@ from oslo_config import cfg
 from oslo_log import log as logging
 from oslo_utils import encodeutils
 import oslo_utils.importutils as imp
-from oslo_utils import timeutils
 import six
 from webob import exc
 
 from glance.common import client
 from glance.common import exception
+from glance.common import timeutils
 from glance.common import wsgi
 from glance.i18n import _, _LE
 

glance/common/timeutils.py

@@ -0,0 +1,89 @@
+# Copyright 2011 OpenStack Foundation.
+# 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.
+
+"""
+Time related utilities and helper functions.
+"""
+
+import datetime
+
+import iso8601
+from monotonic import monotonic as now  # noqa
+import six
+
+# ISO 8601 extended time format with microseconds
+_ISO8601_TIME_FORMAT_SUBSECOND = '%Y-%m-%dT%H:%M:%S.%f'
+_ISO8601_TIME_FORMAT = '%Y-%m-%dT%H:%M:%S'
+PERFECT_TIME_FORMAT = _ISO8601_TIME_FORMAT_SUBSECOND
+
+
+def isotime(at=None, subsecond=False):
+    """Stringify time in ISO 8601 format."""
+    if not at:
+        at = utcnow()
+    st = at.strftime(_ISO8601_TIME_FORMAT
+                     if not subsecond
+                     else _ISO8601_TIME_FORMAT_SUBSECOND)
+    tz = at.tzinfo.tzname(None) if at.tzinfo else 'UTC'
+    st += ('Z' if tz == 'UTC' else tz)
+    return st
+
+
+def parse_isotime(timestr):
+    """Parse time from ISO 8601 format."""
+    try:
+        return iso8601.parse_date(timestr)
+    except iso8601.ParseError as e:
+        raise ValueError(six.text_type(e))
+    except TypeError as e:
+        raise ValueError(six.text_type(e))
+
+
+def utcnow(with_timezone=False):
+    """Overridable version of utils.utcnow that can return a TZ-aware datetime.
+    """
+    if utcnow.override_time:
+        try:
+            return utcnow.override_time.pop(0)
+        except AttributeError:
+            return utcnow.override_time
+    if with_timezone:
+        return datetime.datetime.now(tz=iso8601.iso8601.UTC)
+    return datetime.datetime.utcnow()
+
+
+def normalize_time(timestamp):
+    """Normalize time in arbitrary timezone to UTC naive object."""
+    offset = timestamp.utcoffset()
+    if offset is None:
+        return timestamp
+    return timestamp.replace(tzinfo=None) - offset
+
+
+def iso8601_from_timestamp(timestamp, microsecond=False):
+    """Returns an iso8601 formatted date from timestamp."""
+    return isotime(datetime.datetime.utcfromtimestamp(timestamp), microsecond)
+
+utcnow.override_time = None
+
+
+def delta_seconds(before, after):
+    """Return the difference between two timing objects.
+
+    Compute the difference in seconds between two date, time, or
+    datetime objects (as a float, to microsecond resolution).
+    """
+    delta = after - before
+    return datetime.timedelta.total_seconds(delta)

glance/common/wsme_utils.py

@@ -14,9 +14,10 @@
 
 from datetime import datetime
 
-from oslo_utils import timeutils
 from wsme import types as wsme_types
 
+from glance.common import timeutils
+
 
 class WSMEModelTransformer(object):
 

glance/db/simple/api.py

@@ -20,10 +20,10 @@ from operator import itemgetter
 import uuid
 
 from oslo_log import log as logging
-from oslo_utils import timeutils
 import six
 
 from glance.common import exception
+from glance.common import timeutils
 from glance.common import utils
 from glance.i18n import _, _LI, _LW
 

glance/db/sqlalchemy/api.py

@@ -27,7 +27,6 @@ from oslo_config import cfg
 from oslo_db import exception as db_exception
 from oslo_db.sqlalchemy import session
 from oslo_log import log as logging
-from oslo_utils import timeutils
 import osprofiler.sqlalchemy
 from retrying import retry
 import six
@@ -39,6 +38,7 @@ import sqlalchemy.sql as sa_sql
 
 from glance import artifacts as ga
 from glance.common import exception
+from glance.common import timeutils
 from glance.common import utils
 from glance.db.sqlalchemy import artifacts
 from glance.db.sqlalchemy.metadef_api import (resource_type

glance/db/sqlalchemy/artifacts.py

@@ -19,7 +19,6 @@ import uuid
 from enum import Enum
 from oslo_config import cfg
 from oslo_db import exception as db_exc
-from oslo_utils import timeutils
 import sqlalchemy
 from sqlalchemy import and_
 from sqlalchemy import case
@@ -30,6 +29,7 @@ from sqlalchemy.orm import joinedload
 import glance.artifacts as ga
 from glance.common import exception
 from glance.common import semver_db
+from glance.common import timeutils
 from glance.db.sqlalchemy import models_artifacts as models
 from glance.i18n import _LE, _LW
 from oslo_log import log as os_logging

glance/db/sqlalchemy/metadata.py

@@ -26,13 +26,13 @@ import re
 from oslo_config import cfg
 from oslo_log import log as logging
 from oslo_utils import encodeutils
-from oslo_utils import timeutils
 import six
 import sqlalchemy
 from sqlalchemy import and_
 from sqlalchemy.schema import MetaData
 from sqlalchemy.sql import select
 
+from glance.common import timeutils
 from glance.i18n import _, _LE, _LI, _LW
 
 LOG = logging.getLogger(__name__)

glance/db/sqlalchemy/migrate_repo/versions/035_add_metadef_tables.py

@@ -12,11 +12,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from oslo_utils import timeutils
 import sqlalchemy
 from sqlalchemy.schema import (
     Column, ForeignKey, Index, MetaData, Table, UniqueConstraint)  # noqa
 
+from glance.common import timeutils
 from glance.db.sqlalchemy.migrate_repo.schema import (
     Boolean, DateTime, Integer, String, Text, create_tables,
     drop_tables)  # noqa

glance/db/sqlalchemy/models.py

@@ -22,7 +22,6 @@ import uuid
 
 from oslo_db.sqlalchemy import models
 from oslo_serialization import jsonutils
-from oslo_utils import timeutils
 from sqlalchemy import BigInteger
 from sqlalchemy import Boolean
 from sqlalchemy import Column
@@ -39,6 +38,8 @@ from sqlalchemy import Text
 from sqlalchemy.types import TypeDecorator
 from sqlalchemy import UniqueConstraint
 
+from glance.common import timeutils
+
 
 BASE = declarative_base()
 

glance/db/sqlalchemy/models_artifacts.py

@@ -15,7 +15,6 @@
 import uuid
 
 from oslo_db.sqlalchemy import models
-from oslo_utils import timeutils
 from sqlalchemy import BigInteger
 from sqlalchemy import Boolean
 from sqlalchemy import Column
@@ -33,6 +32,7 @@ from sqlalchemy import Text
 
 import glance.artifacts as ga
 from glance.common import semver_db
+from glance.common import timeutils
 from oslo_log import log as os_logging
 
 BASE = declarative.declarative_base()

glance/db/sqlalchemy/models_metadef.py

@@ -17,7 +17,6 @@ SQLAlchemy models for glance metadata schema
 """
 
 from oslo_db.sqlalchemy import models
-from oslo_utils import timeutils
 from sqlalchemy import Boolean
 from sqlalchemy import Column
 from sqlalchemy import DateTime
@@ -30,6 +29,7 @@ from sqlalchemy import String
 from sqlalchemy import Text
 from sqlalchemy import UniqueConstraint
 
+from glance.common import timeutils
 from glance.db.sqlalchemy.models import JSONEncodedDict
 
 

glance/domain/__init__.py

@@ -22,10 +22,10 @@ from oslo_config import cfg
 from oslo_log import log as logging
 from oslo_utils import excutils
 from oslo_utils import importutils
-from oslo_utils import timeutils
 import six
 
 from glance.common import exception
+from glance.common import timeutils
 from glance.i18n import _, _LE, _LI, _LW
 
 LOG = logging.getLogger(__name__)

glance/notifier.py

@@ -22,11 +22,11 @@ from oslo_log import log as logging
 import oslo_messaging
 from oslo_utils import encodeutils
 from oslo_utils import excutils
-from oslo_utils import timeutils
 import six
 import webob
 
 from glance.common import exception
+from glance.common import timeutils
 from glance.domain import proxy as domain_proxy
 from glance.i18n import _, _LE
 

glance/registry/api/v1/images.py

@@ -21,11 +21,11 @@ from oslo_config import cfg
 from oslo_log import log as logging
 from oslo_utils import encodeutils
 from oslo_utils import strutils
-from oslo_utils import timeutils
 from oslo_utils import uuidutils
 from webob import exc
 
 from glance.common import exception
+from glance.common import timeutils
 from glance.common import utils
 from glance.common import wsgi
 import glance.db

glance/tests/functional/db/base.py

@@ -20,11 +20,11 @@ import datetime
 import uuid
 
 import mock
-from oslo_utils import timeutils
 # NOTE(jokke): simplified transition to py3, behaves like py2 xrange
 from six.moves import range
 
 from glance.common import exception
+from glance.common import timeutils
 from glance import context
 from glance.tests import functional
 import glance.tests.functional.db as db_tests

glance/tests/integration/legacy_functional/test_v1_api.py

@@ -16,10 +16,10 @@ import os
 import tempfile
 
 from oslo_serialization import jsonutils
-from oslo_utils import timeutils
 from oslo_utils import units
 import testtools
 
+from glance.common import timeutils
 from glance.tests.integration.legacy_functional import base
 from glance.tests.utils import minimal_headers
 

glance/tests/integration/v2/test_tasks_api.py

@@ -16,9 +16,9 @@
 import time
 
 from oslo_serialization import jsonutils as json
-from oslo_utils import timeutils
 
 from glance.api.v2 import tasks
+from glance.common import timeutils
 from glance.tests.integration.v2 import base
 
 TENANT1 = '6838eb7b-6ded-434a-882c-b344c77fe8df'

glance/tests/unit/common/test_timeutils.py

@@ -0,0 +1,209 @@
+# Copyright 2011 OpenStack Foundation.
+# 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.
+
+import calendar
+import datetime
+
+import iso8601
+import mock
+
+from glance.common import timeutils
+from glance.tests import utils as test_utils
+
+
+class TimeUtilsTest(test_utils.BaseTestCase):
+
+    def setUp(self):
+        super(TimeUtilsTest, self).setUp()
+        self.skynet_self_aware_time_str = '1997-08-29T06:14:00Z'
+        self.skynet_self_aware_time_ms_str = '1997-08-29T06:14:00.000123Z'
+        self.skynet_self_aware_time = datetime.datetime(1997, 8, 29, 6, 14, 0)
+        self.skynet_self_aware_ms_time = datetime.datetime(
+            1997, 8, 29, 6, 14, 0, 123)
+        self.one_minute_before = datetime.datetime(1997, 8, 29, 6, 13, 0)
+        self.one_minute_after = datetime.datetime(1997, 8, 29, 6, 15, 0)
+        self.skynet_self_aware_time_perfect_str = '1997-08-29T06:14:00.000000'
+        self.skynet_self_aware_time_perfect = datetime.datetime(1997, 8, 29,
+                                                                6, 14, 0)
+
+    def test_isotime(self):
+        with mock.patch('datetime.datetime') as datetime_mock:
+            datetime_mock.utcnow.return_value = self.skynet_self_aware_time
+            dt = timeutils.isotime()
+            self.assertEqual(dt, self.skynet_self_aware_time_str)
+
+    def test_isotimei_micro_second_precision(self):
+        with mock.patch('datetime.datetime') as datetime_mock:
+            datetime_mock.utcnow.return_value = self.skynet_self_aware_ms_time
+            dt = timeutils.isotime(subsecond=True)
+            self.assertEqual(dt, self.skynet_self_aware_time_ms_str)
+
+    def test_parse_isotime(self):
+        expect = timeutils.parse_isotime(self.skynet_self_aware_time_str)
+        skynet_self_aware_time_utc = self.skynet_self_aware_time.replace(
+            tzinfo=iso8601.iso8601.UTC)
+        self.assertEqual(skynet_self_aware_time_utc, expect)
+
+    def test_parse_isotime_micro_second_precision(self):
+        expect = timeutils.parse_isotime(self.skynet_self_aware_time_ms_str)
+        skynet_self_aware_time_ms_utc = self.skynet_self_aware_ms_time.replace(
+            tzinfo=iso8601.iso8601.UTC)
+        self.assertEqual(skynet_self_aware_time_ms_utc, expect)
+
+    def test_utcnow(self):
+        with mock.patch('datetime.datetime') as datetime_mock:
+            datetime_mock.utcnow.return_value = self.skynet_self_aware_time
+            self.assertEqual(timeutils.utcnow(), self.skynet_self_aware_time)
+
+        self.assertFalse(timeutils.utcnow() == self.skynet_self_aware_time)
+        self.assertTrue(timeutils.utcnow())
+
+    def test_delta_seconds(self):
+        before = timeutils.utcnow()
+        after = before + datetime.timedelta(days=7, seconds=59,
+                                            microseconds=123456)
+        self.assertAlmostEquals(604859.123456,
+                                timeutils.delta_seconds(before, after))
+
+    def test_iso8601_from_timestamp(self):
+        utcnow = timeutils.utcnow()
+        iso = timeutils.isotime(utcnow)
+        ts = calendar.timegm(utcnow.timetuple())
+        self.assertEqual(iso, timeutils.iso8601_from_timestamp(ts))
+
+
+class TestIso8601Time(test_utils.BaseTestCase):
+
+    def _instaneous(self, timestamp, yr, mon, day, hr, minute, sec, micro):
+        self.assertEqual(timestamp.year, yr)
+        self.assertEqual(timestamp.month, mon)
+        self.assertEqual(timestamp.day, day)
+        self.assertEqual(timestamp.hour, hr)
+        self.assertEqual(timestamp.minute, minute)
+        self.assertEqual(timestamp.second, sec)
+        self.assertEqual(timestamp.microsecond, micro)
+
+    def _do_test(self, time_str, yr, mon, day, hr, minute, sec, micro, shift):
+        DAY_SECONDS = 24 * 60 * 60
+        timestamp = timeutils.parse_isotime(time_str)
+        self._instaneous(timestamp, yr, mon, day, hr, minute, sec, micro)
+        offset = timestamp.tzinfo.utcoffset(None)
+        self.assertEqual(offset.seconds + offset.days * DAY_SECONDS, shift)
+
+    def test_zulu(self):
+        time_str = '2012-02-14T20:53:07Z'
+        self._do_test(time_str, 2012, 2, 14, 20, 53, 7, 0, 0)
+
+    def test_zulu_micros(self):
+        time_str = '2012-02-14T20:53:07.123Z'
+        self._do_test(time_str, 2012, 2, 14, 20, 53, 7, 123000, 0)
+
+    def test_offset_east(self):
+        time_str = '2012-02-14T20:53:07+04:30'
+        offset = 4.5 * 60 * 60
+        self._do_test(time_str, 2012, 2, 14, 20, 53, 7, 0, offset)
+
+    def test_offset_east_micros(self):
+        time_str = '2012-02-14T20:53:07.42+04:30'
+        offset = 4.5 * 60 * 60
+        self._do_test(time_str, 2012, 2, 14, 20, 53, 7, 420000, offset)
+
+    def test_offset_west(self):
+        time_str = '2012-02-14T20:53:07-05:30'
+        offset = -5.5 * 60 * 60
+        self._do_test(time_str, 2012, 2, 14, 20, 53, 7, 0, offset)
+
+    def test_offset_west_micros(self):
+        time_str = '2012-02-14T20:53:07.654321-05:30'
+        offset = -5.5 * 60 * 60
+        self._do_test(time_str, 2012, 2, 14, 20, 53, 7, 654321, offset)
+
+    def test_compare(self):
+        zulu = timeutils.parse_isotime('2012-02-14T20:53:07')
+        east = timeutils.parse_isotime('2012-02-14T20:53:07-01:00')
+        west = timeutils.parse_isotime('2012-02-14T20:53:07+01:00')
+        self.assertTrue(east > west)
+        self.assertTrue(east > zulu)
+        self.assertTrue(zulu > west)
+
+    def test_compare_micros(self):
+        zulu = timeutils.parse_isotime('2012-02-14T20:53:07.6544')
+        east = timeutils.parse_isotime('2012-02-14T19:53:07.654321-01:00')
+        west = timeutils.parse_isotime('2012-02-14T21:53:07.655+01:00')
+        self.assertTrue(east < west)
+        self.assertTrue(east < zulu)
+        self.assertTrue(zulu < west)
+
+    def test_zulu_roundtrip(self):
+        time_str = '2012-02-14T20:53:07Z'
+        zulu = timeutils.parse_isotime(time_str)
+        self.assertEqual(zulu.tzinfo, iso8601.iso8601.UTC)
+        self.assertEqual(timeutils.isotime(zulu), time_str)
+
+    def test_east_roundtrip(self):
+        time_str = '2012-02-14T20:53:07-07:00'
+        east = timeutils.parse_isotime(time_str)
+        self.assertEqual(east.tzinfo.tzname(None), '-07:00')
+        self.assertEqual(timeutils.isotime(east), time_str)
+
+    def test_west_roundtrip(self):
+        time_str = '2012-02-14T20:53:07+11:30'
+        west = timeutils.parse_isotime(time_str)
+        self.assertEqual(west.tzinfo.tzname(None), '+11:30')
+        self.assertEqual(timeutils.isotime(west), time_str)
+
+    def test_now_roundtrip(self):
+        time_str = timeutils.isotime()
+        now = timeutils.parse_isotime(time_str)
+        self.assertEqual(now.tzinfo, iso8601.iso8601.UTC)
+        self.assertEqual(timeutils.isotime(now), time_str)
+
+    def test_zulu_normalize(self):
+        time_str = '2012-02-14T20:53:07Z'
+        zulu = timeutils.parse_isotime(time_str)
+        normed = timeutils.normalize_time(zulu)
+        self._instaneous(normed, 2012, 2, 14, 20, 53, 7, 0)
+
+    def test_east_normalize(self):
+        time_str = '2012-02-14T20:53:07-07:00'
+        east = timeutils.parse_isotime(time_str)
+        normed = timeutils.normalize_time(east)
+        self._instaneous(normed, 2012, 2, 15, 3, 53, 7, 0)
+
+    def test_west_normalize(self):
+        time_str = '2012-02-14T20:53:07+21:00'
+        west = timeutils.parse_isotime(time_str)
+        normed = timeutils.normalize_time(west)
+        self._instaneous(normed, 2012, 2, 13, 23, 53, 7, 0)
+
+    def test_normalize_aware_to_naive(self):
+        dt = datetime.datetime(2011, 2, 14, 20, 53, 7)
+        time_str = '2011-02-14T20:53:07+21:00'
+        aware = timeutils.parse_isotime(time_str)
+        naive = timeutils.normalize_time(aware)
+        self.assertTrue(naive < dt)
+
+    def test_normalize_zulu_aware_to_naive(self):
+        dt = datetime.datetime(2011, 2, 14, 20, 53, 7)
+        time_str = '2011-02-14T19:53:07Z'
+        aware = timeutils.parse_isotime(time_str)
+        naive = timeutils.normalize_time(aware)
+        self.assertTrue(naive < dt)
+
+    def test_normalize_naive(self):
+        dt = datetime.datetime(2011, 2, 14, 20, 53, 7)
+        dtn = datetime.datetime(2011, 2, 14, 19, 53, 7)
+        naive = timeutils.normalize_time(dtn)
+        self.assertTrue(naive < dt)

glance/tests/unit/test_auth.py

@@ -15,13 +15,13 @@
 #    under the License.
 
 from oslo_serialization import jsonutils
-from oslo_utils import timeutils
 from oslotest import moxstubout
 import webob
 
 from glance.api import authorization
 from glance.common import auth
 from glance.common import exception
+from glance.common import timeutils
 import glance.domain
 from glance.tests.unit import utils as unittest_utils
 from glance.tests import utils

glance/tests/unit/test_domain.py

@@ -20,13 +20,13 @@ import uuid
 import mock
 from oslo_config import cfg
 import oslo_utils.importutils
-from oslo_utils import timeutils
 
 from glance.artifacts import domain as artifacts_domain
 import glance.async
 from glance.async import taskflow_executor
 from glance.common.artifacts import definitions
 from glance.common import exception
+from glance.common import timeutils
 from glance import domain
 import glance.tests.utils as test_utils
 

glance/tests/unit/test_migrations.py

@@ -37,7 +37,6 @@ from oslo_db.sqlalchemy import test_base
 from oslo_db.sqlalchemy import test_migrations
 from oslo_db.sqlalchemy import utils as db_utils
 from oslo_serialization import jsonutils
-from oslo_utils import timeutils
 from oslo_utils import uuidutils
 # NOTE(jokke): simplified transition to py3, behaves like py2 xrange
 from six.moves import range
@@ -46,6 +45,7 @@ from sqlalchemy import inspect
 
 from glance.common import crypt
 from glance.common import exception
+from glance.common import timeutils
 from glance.db import migration
 from glance.db.sqlalchemy import migrate_repo
 from glance.db.sqlalchemy.migrate_repo.schema import from_migration_import

glance/tests/unit/test_notifier.py

@@ -20,11 +20,11 @@ import glance_store
 import mock
 from oslo_config import cfg
 import oslo_messaging
-from oslo_utils import timeutils
 import webob
 
 import glance.async
 from glance.common import exception
+from glance.common import timeutils
 import glance.context
 from glance import notifier
 import glance.tests.unit.utils as unit_test_utils

glance/tests/unit/v1/test_api.py

@@ -26,7 +26,6 @@ import glance_store as store
 import mock
 from oslo_config import cfg
 from oslo_serialization import jsonutils
-from oslo_utils import timeutils
 import routes
 import six
 import webob
@@ -37,6 +36,7 @@ from glance.api.v1 import router
 from glance.api.v1 import upload_utils
 import glance.common.config
 from glance.common import exception
+from glance.common import timeutils
 import glance.context
 from glance.db.sqlalchemy import api as db_api
 from glance.db.sqlalchemy import models as db_models

glance/tests/unit/v1/test_registry_api.py

@@ -21,7 +21,6 @@ import uuid
 import mock
 from oslo_config import cfg
 from oslo_serialization import jsonutils
-from oslo_utils import timeutils
 import routes
 import six
 import webob
@@ -29,6 +28,7 @@ import webob
 import glance.api.common
 import glance.common.config
 from glance.common import crypt
+from glance.common import timeutils
 from glance import context
 from glance.db.sqlalchemy import api as db_api
 from glance.db.sqlalchemy import models as db_models

glance/tests/unit/v1/test_registry_client.py

@@ -19,7 +19,6 @@ import os
 import uuid
 
 from mock import patch
-from oslo_utils import timeutils
 from six.moves import reload_module
 import testtools
 
@@ -27,6 +26,7 @@ from glance.api.v1.images import Controller as acontroller
 from glance.common import client as test_client
 from glance.common import config
 from glance.common import exception
+from glance.common import timeutils
 from glance import context
 from glance.db.sqlalchemy import api as db_api
 from glance.registry.api.v1.images import Controller as rcontroller

glance/tests/unit/v2/test_registry_api.py

@@ -20,13 +20,13 @@ import uuid
 
 from oslo_config import cfg
 from oslo_serialization import jsonutils
-from oslo_utils import timeutils
 import routes
 import six
 import webob
 
 import glance.api.common
 import glance.common.config
+from glance.common import timeutils
 import glance.context
 from glance.db.sqlalchemy import api as db_api
 from glance.db.sqlalchemy import models as db_models

glance/tests/unit/v2/test_registry_client.py

@@ -25,11 +25,11 @@ import os
 import uuid
 
 from mock import patch
-from oslo_utils import timeutils
 from six.moves import reload_module
 
 from glance.common import config
 from glance.common import exception
+from glance.common import timeutils
 from glance import context
 from glance.db.sqlalchemy import api as db_api
 from glance.i18n import _

glance/tests/unit/v2/test_tasks_resource.py

@@ -20,12 +20,12 @@ import uuid
 import mock
 from oslo_config import cfg
 from oslo_serialization import jsonutils
-from oslo_utils import timeutils
 # NOTE(jokke): simplified transition to py3, behaves like py2 xrange
 from six.moves import range
 import webob
 
 import glance.api.v2.tasks
+from glance.common import timeutils
 import glance.domain
 import glance.gateway
 from glance.tests.unit import base

glance/tests/utils.py

@@ -28,7 +28,6 @@ from oslo_config import cfg
 from oslo_config import fixture as cfg_fixture
 from oslo_log import log
 from oslo_serialization import jsonutils
-from oslo_utils import timeutils
 from oslotest import moxstubout
 import six
 from six.moves import BaseHTTPServer
@@ -38,6 +37,7 @@ import webob
 from glance.common import config
 from glance.common import exception
 from glance.common import property_utils
+from glance.common import timeutils
 from glance.common import utils
 from glance.common import wsgi
 from glance import context

requirements.txt

@@ -54,3 +54,7 @@ semantic-version>=2.3.1
 
 castellan>=0.3.1 # Apache-2.0
 cryptography>=1.0 # Apache-2.0
+
+# timeutils
+iso8601>=0.1.9
+monotonic>=0.3 # Apache-2.0