parse_date does not handle exceptions to date format

[leighmhart]

We have been using the EBS Snapshot Scheduler for quite some time and, at some point, the date format returned by datetime.timedelta has apparently changed as we have started seeing errors in our lambda execution:

time data '2017-07-26 08:03:21' does not match format '%Y-%m-%d %H:%M:%S.%f'

these errors appear to be stopping the code execution at that point in purge_history, rather than handling the error and moving on to other snapshots in that region - as a result, no snapshots are purged.

I think a try/except would help address this issue?

try:
  check_time = parse_date("2017-07-26 08:03:21")
except:
  print "\n\nparse_date: invalid date found in database, skipping\n\n"

or equivalent?

Meanwhile I have to go back and massage entries in my history table data... interestingly, I found only 1 that matched.