def extract_utc_timestamp_from_log_line(line):
"""
Extracts the timestamp from a log line of the format "<timestamp> <other data>" and returns a UTC datetime object
or None if it could not parse the line
"""
# Extract ISO 8601 date per http://www.pelagodesign.com/blog/2009/05/20/iso-8601-date-validation-that-doesnt-suck/
iso_re = r'^([\+-]?\d{4}(?!\d{2}\b))((-?)((0[1-9]|1[0-2])(\3([12]\d|0[1-9]|3[01]))?|W([0-4]\d|5[0-2])(-?[1-7])?|' \
r'(00[1-9]|0[1-9]\d|[12]\d{2}|3([0-5]\d|6[1-6])))([T\s]((([01]\d|2[0-3])((:?)[0-5]\d)?|24\:?00)([\.,]\d+' \
r'(?!:))?)?(\17[0-5]\d([\.,]\d+)?)?([zZ]|([\+-])([01]\d|2[0-3]):?([0-5]\d)?)?)?)? '
tokens = re.match(iso_re, line)
if not tokens:
# Could not parse line
return None
timestamp = tokens.group(0).strip()
dt = isodate.parse_datetime(timestamp)
utc_timestamp = datetime_convert_timezone(dt, dt.tzinfo, dateutil.tz.tzutc())
return utc_timestamp
def extract_utc_timestamp_from_log_line(line):
"""
Extracts the timestamp from a log line of the format "<timestamp> <other data>" and returns a UTC datetime object
or None if it could not parse the line
"""
# Extract ISO 8601 date per http://www.pelagodesign.com/blog/2009/05/20/iso-8601-date-validation-that-doesnt-suck/
iso_re = r'^([\+-]?\d{4}(?!\d{2}\b))((-?)((0[1-9]|1[0-2])(\3([12]\d|0[1-9]|3[01]))?|W([0-4]\d|5[0-2])(-?[1-7])?|' \
r'(00[1-9]|0[1-9]\d|[12]\d{2}|3([0-5]\d|6[1-6])))([T\s]((([01]\d|2[0-3])((:?)[0-5]\d)?|24\:?00)([\.,]\d+' \
r'(?!:))?)?(\17[0-5]\d([\.,]\d+)?)?([zZ]|([\+-])([01]\d|2[0-3]):?([0-5]\d)?)?)?)? '
tokens = re.match(iso_re, line)
if not tokens:
# Could not parse line
return None
timestamp = tokens.group(0).strip()
dt = isodate.parse_datetime(timestamp)
utc_timestamp = datetime_convert_timezone(dt, dt.tzinfo, tz.tzutc())
return utc_timestamp