def setup(self):
""" get start end end date of logfile before starting to parse. """
if self.mlogfilter.is_stdin:
# assume this year (we have no other info)
now = datetime.now()
self.startDateTime = datetime(now.year, 1, 1, tzinfo=tzutc())
self.endDateTime = datetime(MAXYEAR, 12, 31, tzinfo=tzutc())
else:
logfiles = self.mlogfilter.args['logfile']
self.startDateTime = min([lf.start+timedelta(hours=self.mlogfilter.args['timezone'][i]) for i, lf in enumerate(logfiles)])
self.endDateTime = max([lf.end+timedelta(hours=self.mlogfilter.args['timezone'][i]) for i, lf in enumerate(logfiles)])
# now parse for further changes to from and to datetimes
dtbound = DateTimeBoundaries(self.startDateTime, self.endDateTime)
self.fromDateTime, self.toDateTime = dtbound(self.mlogfilter.args['from'] or None,
self.mlogfilter.args['to'] or None)
# define start_limit for mlogfilter's fast_forward method
self.start_limit = self.fromDateTime
# for single logfile, get file seek position of `to` datetime
if len(self.mlogfilter.args['logfile']) == 1 and not self.mlogfilter.is_stdin:
if self.mlogfilter.args['to'] != "end":
# fast forward, get seek value, then reset file
logfile = self.mlogfilter.args['logfile'][0]
logfile.fast_forward(self.toDateTime)
self.seek_to = logfile.filehandle.tell()
logfile.filehandle.seek(0)
else:
self.seek_to = -1
else:
self.seek_to = False
def test_dtb_within_boundaries_absolute():
start = datetime(2012, 10, 14, tzinfo=tzutc())
end = datetime(2013, 6, 2, tzinfo=tzutc())
dtb = DateTimeBoundaries(start, end)
from_dt, to_dt = dtb('Feb 18 2013', 'Feb 19 2013')
assert from_dt == datetime(2013, 2, 18, tzinfo=tzutc())
assert to_dt == datetime(2013, 2, 19, tzinfo=tzutc())
def test_dtb_both_outside_bounds():
start = datetime(2012, 10, 14, tzinfo=tzutc())
end = datetime(2013, 6, 2, tzinfo=tzutc())
dtb = DateTimeBoundaries(start, end)
from_dt, to_dt = dtb('2000-01-01', '2050-12-31')
assert from_dt == start
assert to_dt == end
def test_dtb_to_after_end():
start = datetime(2012, 10, 14, tzinfo=tzutc())
end = datetime(2013, 6, 2, tzinfo=tzutc())
dtb = DateTimeBoundaries(start, end)
from_dt, to_dt = dtb('2013-01-15', '2016-03-02')
assert from_dt == datetime(2013, 1, 15, tzinfo=tzutc())
assert to_dt == end
def test_dtb_from_before_start():
start = datetime(2012, 10, 14, tzinfo=tzutc())
end = datetime(2013, 6, 2, tzinfo=tzutc())
dtb = DateTimeBoundaries(start, end)
from_dt, to_dt = dtb('Sep 15 2012', 'Dec 1 2012')
assert from_dt == start
assert to_dt == datetime(2012, 12, 01, tzinfo=tzutc())
def setup(self):
""" get start end end date of logfile before starting to parse. """
logfile = self.commandLineArgs['logfile']
seekable = False
if logfile:
seekable = logfile.name != "<stdin>"
if not seekable:
# assume this year (we have no other info)
now = datetime.now()
self.startDateTime = datetime(now.year, 1, 1)
self.endDateTime = datetime(MAXYEAR, 12, 31)
# self.fromDateTime = datetime(MINYEAR, 1, 1)
# self.toDateTime = datetime(MAXYEAR, 12, 31)
else:
# get start datetime
for line in logfile:
logline = LogLine(line)
date = logline.datetime
if date:
break
self.startDateTime = date
# get end datetime (lines are at most 10k, go back 15k at most to make sure)
logfile.seek(0, 2)
file_size = logfile.tell()
logfile.seek(-min(file_size, 15000), 2)
for line in reversed(logfile.readlines()):
logline = LogLine(line)
date = logline.datetime
if date:
break
self.endDateTime = date
# if there was a roll-over, subtract 1 year from start time
if self.endDateTime < self.startDateTime:
self.startDateTime = self.startDateTime.replace(
year=self.startDateTime.year - 1)
# reset logfile
logfile.seek(0)
# now parse for further changes to from and to datetimes
dtbound = DateTimeBoundaries(self.startDateTime, self.endDateTime)
self.fromDateTime, self.toDateTime = dtbound(
self.commandLineArgs['from'] or None, self.commandLineArgs['to']
or None)
def test_dtb_keywords():
start = datetime(2012, 10, 14, tzinfo=tzutc())
end = datetime(2050, 1, 1, tzinfo=tzutc())
dtb = DateTimeBoundaries(start, end)
# start and end
from_dt, to_dt = dtb('start', 'end')
assert from_dt == start
assert to_dt == end
# today
from_dt, to_dt = dtb('start', 'today')
today = datetime.now().replace(hour=0, minute=0, second=0, microsecond=0, tzinfo=tzutc())
assert to_dt == today
# now, must be witin one second from now
from_dt, to_dt = dtb('start', 'now')
now = datetime.now().replace(tzinfo=tzutc())
assert now - to_dt < timedelta(seconds=1)
def test_dtb_string2dt():
start = datetime(1900, 1, 1, tzinfo=tzutc())
end = datetime(2015, 6, 13, tzinfo=tzutc())
dtb = DateTimeBoundaries(start, end)
# without lower bound
assert dtb.string2dt('') == start
assert dtb.string2dt('2013') == datetime(2013, 1, 1, 0, 0, tzinfo=tzutc())
assert dtb.string2dt('Aug 2011') == datetime(2011, 8, 1, 0, 0, tzinfo=tzutc())
assert dtb.string2dt('29 Sep 1978') == datetime(1978, 9, 29, 0, 0, tzinfo=tzutc())
# no year given, choose end year if still in log file, otherwise year before
assert dtb.string2dt('20 Mar') == datetime(2015, 3, 20, 0, 0, tzinfo=tzutc())
assert dtb.string2dt('20 Aug') == datetime(2014, 8, 20, 0, 0, tzinfo=tzutc())
# weekdays, always use last week of log file end
assert dtb.string2dt('Sat') == datetime(2015, 6, 13, 0, 0, tzinfo=tzutc())
assert dtb.string2dt('Wed') == datetime(2015, 6, 10, 0, 0, tzinfo=tzutc())
assert dtb.string2dt('Sun') == datetime(2015, 6, 7, 0, 0, tzinfo=tzutc())
# constants
assert dtb.string2dt('start') == start
assert dtb.string2dt('end') == end
assert dtb.string2dt('today') == datetime.now().replace(hour=0, minute=0, second=0, microsecond=0, tzinfo=tzutc())
assert dtb.string2dt('yesterday') == datetime.now().replace(hour=0, minute=0, second=0, microsecond=0, tzinfo=tzutc()) - timedelta(days=1)
# times
assert dtb.string2dt('29 Sep 1978 13:06') == datetime(1978, 9, 29, 13, 6, tzinfo=tzutc())
assert dtb.string2dt('29 Sep 13:06') == datetime(2014, 9, 29, 13, 6, tzinfo=tzutc())
assert dtb.string2dt('13:06') == datetime(2014, 6, 13, 13, 6, tzinfo=tzutc())
assert dtb.string2dt('13:06:15') == datetime(2014, 6, 13, 13, 6, 15, tzinfo=tzutc())
assert dtb.string2dt('13:06:15.214') == datetime(2014, 6, 13, 13, 6, 15, 214000, tzinfo=tzutc())
assert dtb.string2dt('Wed 13:06:15') == datetime(2015, 6, 10, 13, 6, 15, tzinfo=tzutc())
# offsets
assert dtb.string2dt('2013 +1d') == datetime(2013, 1, 2, 0, 0, tzinfo=tzutc())
assert dtb.string2dt('Sep 2011 +1mo') == datetime(2011, 10, 1, 0, 0, tzinfo=tzutc())
assert dtb.string2dt('29 Sep 1978 +3hours') == datetime(1978, 9, 29, 3, 0, tzinfo=tzutc())
assert dtb.string2dt('20 Mar +5min') == datetime(2015, 3, 20, 0, 5, tzinfo=tzutc())
assert dtb.string2dt('20 Aug -2day') == datetime(2014, 8, 18, 0, 0, tzinfo=tzutc())
assert dtb.string2dt('Sat -1d') == datetime(2015, 6, 12, 0, 0, tzinfo=tzutc())
assert dtb.string2dt('Wed +4sec') == datetime(2015, 6, 10, 0, 0, 4, tzinfo=tzutc())
assert dtb.string2dt('Sun -26h') == datetime(2015, 6, 5, 22, 0, tzinfo=tzutc())
assert dtb.string2dt('29 Sep 1978 13:06 +59s') == datetime(1978, 9, 29, 13, 6, 59, tzinfo=tzutc())
assert dtb.string2dt('29 Sep 13:06 +120secs') == datetime(2014, 9, 29, 13, 8, tzinfo=tzutc())
assert dtb.string2dt('13:06 -1week') == datetime(2015, 6, 6, 13, 6, tzinfo=tzutc())
assert dtb.string2dt('13:06:15 -16sec') == datetime(2014, 6, 13, 13, 5, 59, tzinfo=tzutc())
assert dtb.string2dt('13:06:15.214 +1h') == datetime(2014, 6, 13, 14, 6, 15, 214000, tzinfo=tzutc())
assert dtb.string2dt('Wed 13:06:15 -1day') == datetime(2015, 6, 9, 13, 6, 15, tzinfo=tzutc())
print dtb.string2dt('start +3h')
assert dtb.string2dt('start +3h') == start + timedelta(hours=3)
# offset only
assert dtb.string2dt('-2d') == datetime(2015, 6, 11, tzinfo=tzutc())
# test presence / absence of year and behavior for adjustment
assert dtb.string2dt('July 30 2015') == datetime(2015, 7, 30, tzinfo=tzutc())
assert dtb.string2dt('July 30') == datetime(2014, 7, 30, tzinfo=tzutc())
assert dtb.string2dt('1899 Nov 1') == datetime(1899, 11, 1, tzinfo=tzutc())
# isoformat
from_dt = datetime(2014, 8, 5, 20, 57, 7, tzinfo=tzutc())
assert dtb.string2dt(from_dt.isoformat()) == datetime(2014, 8, 5, 20, 57, 7, tzinfo=tzutc())
assert dtb.string2dt('2014-04-28T16:17:18.192Z') == datetime(2014, 4, 28, 16, 17, 18, 192000, tzinfo=tzutc())
# with lower_bounds
lower = datetime(2013, 5, 2, 16, 21, 58, 123, tzinfo=tzutc())
assert dtb.string2dt('', lower) == end
assert dtb.string2dt('2013', lower) == datetime(2013, 1, 1, 0, 0, tzinfo=tzutc())
assert dtb.string2dt('Aug', lower) == datetime(2014, 8, 1, 0, 0, tzinfo=tzutc())
assert dtb.string2dt('+3sec', lower) == lower + timedelta(seconds=3)
assert dtb.string2dt('+4min', lower) == lower + timedelta(minutes=4)
assert dtb.string2dt('-5hours', lower) == lower - timedelta(hours=5)
