Import timeutils.is_soon from keystoneclient

This is a function defined as will_expire_soon at least twice in
python-keystoneclient, and it's actually quite handy. There is a comment on
that code about moving to timeutils, and it actually sounds like a good idea
since I'm likely to use it in Ceilometer, so here it is.

Change-Id: Idf208ce9e7ce9048a38d98212b7f730c6b7c8288
Signed-off-by: Julien Danjou <julien@danjou.info>

1 files changed, 13 insertions, 0 deletions

diff --git a/openstack/common/timeutils.py b/openstack/common/timeutils.py
index 0f34608..572c829 100644
--- a/openstack/common/timeutils.py
+++ b/openstack/common/timeutils.py
@@ -162,3 +162,16 @@ def delta_seconds(before, after):
     except AttributeError:
         return ((delta.days * 24 * 3600) + delta.seconds +
                 float(delta.microseconds) / (10 ** 6))
+
+
+def is_soon(dt, window):
+    """
+    Determines if time is going to happen in the next window seconds.
+
+    :params dt: the time
+    :params window: minimum seconds to remain to consider the time not soon
+
+    :return: True if expiration is within the given duration
+    """
+    soon = (utcnow() + datetime.timedelta(seconds=window))
+    return normalize_time(dt) < soon