Create openstack.common.timeutils.

Split time related utility functions out of openstack.common.utils into
a new module, timeutils.

Change-Id: Ic09952cd48e0b4548e410926cc456cbd515a4e56

2 files changed, 73 insertions, 49 deletions

diff --git a/openstack/common/timeutils.py b/openstack/common/timeutils.py
new file mode 100644
index 0000000..c536cb2
--- /dev/null
+++ b/openstack/common/timeutils.py
@@ -0,0 +1,73 @@
+# 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.
+
+"""
+Time related utilities and helper functions.
+"""
+
+import datetime
+
+import iso8601
+
+
+TIME_FORMAT = "%Y-%m-%dT%H:%M:%S"
+
+
+def isotime(at=None):
+    """Stringify time in ISO 8601 format"""
+    if not at:
+        at = datetime.datetime.utcnow()
+    str = at.strftime(TIME_FORMAT)
+    tz = at.tzinfo.tzname(None) if at.tzinfo else 'UTC'
+    str += ('Z' if tz == 'UTC' else tz)
+    return str
+
+
+def parse_isotime(timestr):
+    """Parse time from ISO 8601 format"""
+    try:
+        return iso8601.parse_date(timestr)
+    except iso8601.ParseError as e:
+        raise ValueError(e.message)
+    except TypeError as e:
+        raise ValueError(e.message)
+
+
+def normalize_time(timestamp):
+    """Normalize time in arbitrary timezone to UTC"""
+    offset = timestamp.utcoffset()
+    return timestamp.replace(tzinfo=None) - offset if offset else timestamp
+
+
+def utcnow():
+    """Overridable version of utils.utcnow."""
+    if utcnow.override_time:
+        return utcnow.override_time
+    return datetime.datetime.utcnow()
+
+
+utcnow.override_time = None
+
+
+def set_time_override(override_time=datetime.datetime.utcnow()):
+    """Override utils.utcnow to return a constant time."""
+    utcnow.override_time = override_time
+
+
+def clear_time_override():
+    """Remove the overridden time."""
+    utcnow.override_time = None
diff --git a/openstack/common/utils.py b/openstack/common/utils.py
index 0191036..d3d01fa 100644
--- a/openstack/common/utils.py
+++ b/openstack/common/utils.py
@@ -19,7 +19,6 @@
 System-level utilities and helper functions.
 """
 
-import datetime
 import logging
 import os
 import random
@@ -28,12 +27,10 @@ import sys
 
 from eventlet import greenthread
 from eventlet.green import subprocess
-import iso8601
 
 from openstack.common import exception
 
 
-TIME_FORMAT = "%Y-%m-%dT%H:%M:%S"
 LOG = logging.getLogger(__name__)
 
 
@@ -163,52 +160,6 @@ def import_object(import_str):
         return import_class(import_str)
 
 
-def isotime(at=None):
-    """Stringify time in ISO 8601 format"""
-    if not at:
-        at = datetime.datetime.utcnow()
-    str = at.strftime(TIME_FORMAT)
-    tz = at.tzinfo.tzname(None) if at.tzinfo else 'UTC'
-    str += ('Z' if tz == 'UTC' else tz)
-    return str
-
-
-def parse_isotime(timestr):
-    """Parse time from ISO 8601 format"""
-    try:
-        return iso8601.parse_date(timestr)
-    except iso8601.ParseError as e:
-        raise ValueError(e.message)
-    except TypeError as e:
-        raise ValueError(e.message)
-
-
-def normalize_time(timestamp):
-    """Normalize time in arbitrary timezone to UTC"""
-    offset = timestamp.utcoffset()
-    return timestamp.replace(tzinfo=None) - offset if offset else timestamp
-
-
-def utcnow():
-    """Overridable version of utils.utcnow."""
-    if utcnow.override_time:
-        return utcnow.override_time
-    return datetime.datetime.utcnow()
-
-
-utcnow.override_time = None
-
-
-def set_time_override(override_time=datetime.datetime.utcnow()):
-    """Override utils.utcnow to return a constant time."""
-    utcnow.override_time = override_time
-
-
-def clear_time_override():
-    """Remove the overridden time."""
-    utcnow.override_time = None
-
-
 def auth_str_equal(provided, known):
     """Constant-time string comparison.