← Back
Editing: mytime.py
# emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: t -*- # vi: set ft=python sts=4 ts=4 sw=4 noet : # This file is part of Fail2Ban. # # Fail2Ban is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # Fail2Ban is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with Fail2Ban; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. __author__ = "Cyril Jaquier" __copyright__ = "Copyright (c) 2004 Cyril Jaquier" __license__ = "GPL" import datetime import re import time ## # MyTime class. # class MyTime: """A wrapper around time module primarily for testing purposes This class is a wrapper around time.time() and time.gmtime(). When performing unit test, it is very useful to get a fixed value from these functions. Thus, time.time() and time.gmtime() should never be called directly. This wrapper should be called instead. The API are equivalent. """ myTime = None alternateNowTime = None alternateNow = None @staticmethod def setAlternateNow(t): """Set current time. Use None in order to always get the real current time. @param t the time to set or None """ MyTime.alternateNowTime = t MyTime.alternateNow = \ datetime.datetime.fromtimestamp(t) if t is not None else None @staticmethod def setTime(t): """Set current time. Use None in order to always get the real current time. @param t the time to set or None """ MyTime.myTime = t @staticmethod def time(): """Decorate time.time() for the purpose of testing mocking @return time.time() if setTime was called with None """ if MyTime.myTime is None: return time.time() else: return MyTime.myTime @staticmethod def gmtime(): """Decorate time.gmtime() for the purpose of testing mocking @return time.gmtime() if setTime was called with None """ if MyTime.myTime is None: return time.gmtime() else: return time.gmtime(MyTime.myTime) @staticmethod def now(): """Decorate datetime.now() for the purpose of testing mocking @return datetime.now() if setTime was called with None """ if MyTime.myTime is None: return datetime.datetime.now() if MyTime.myTime == MyTime.alternateNowTime: return MyTime.alternateNow return datetime.datetime.fromtimestamp(MyTime.myTime) @staticmethod def localtime(x=None): """Decorate time.localtime() for the purpose of testing mocking @return time.localtime() if setTime was called with None """ if MyTime.myTime is None or x is not None: return time.localtime(x) else: return time.localtime(MyTime.myTime) @staticmethod def time2str(unixTime, format="%Y-%m-%d %H:%M:%S"): """Convert time to a string representing as date and time using given format. Default format is ISO 8601, YYYY-MM-DD HH:MM:SS without microseconds. @return ISO-capable string representation of given unixTime """ # consider end of 9999th year (in GMT+23 to avoid year overflow in other TZ) dt = datetime.datetime.fromtimestamp( unixTime).replace(microsecond=0 ) if unixTime < 253402214400 else datetime.datetime(9999, 12, 31, 23, 59, 59) return dt.strftime(format) ## precreate/precompile primitives used in str2seconds: ## preparing expression: _str2sec_prep = re.compile(r"(?i)(?<=[a-z])(\d)") ## finally expression: _str2sec_fini = re.compile(r"(\d)\s+(\d)") ## wrapper for each sub part: _str2sec_subpart = r"(?i)(?<=[\d\s])(%s)\b" ## parts to be replaced - pair of (regexp x replacement): _str2sec_parts = ( (re.compile(_str2sec_subpart % r"days?|da|dd?"), "*"+str(24*60*60)), (re.compile(_str2sec_subpart % r"weeks?|wee?|ww?"), "*"+str(7*24*60*60)), (re.compile(_str2sec_subpart % r"months?|mon?"), "*"+str((365*3+366)*24*60*60/4/12)), (re.compile(_str2sec_subpart % r"years?|yea?|yy?"), "*"+str((365*3+366)*24*60*60/4)), (re.compile(_str2sec_subpart % r"seconds?|sec?|ss?"), "*"+str(1)), (re.compile(_str2sec_subpart % r"minutes?|min?|mm?"), "*"+str(60)), (re.compile(_str2sec_subpart % r"hours?|hou?|hh?"), "*"+str(60*60)), ) @staticmethod def str2seconds(val): """Wraps string expression like "1h 2m 3s" into number contains seconds (3723). The string expression will be evaluated as mathematical expression, spaces between each groups will be wrapped to "+" operand (only if any operand does not specified between). Because of case insensitivity and overwriting with minutes ("m" or "mm"), the short replacement for month are "mo" or "mon". Ex: 1hour+30min = 5400 0d 1h 30m = 5400 1year-6mo = 15778800 6 months = 15778800 warn: month is not 30 days, it is a year in seconds / 12, the leap years will be respected also: >>>> float(str2seconds("1month")) / 60 / 60 / 24 30.4375 >>>> float(str2seconds("1year")) / 60 / 60 / 24 365.25 @returns number (calculated seconds from expression "val") """ if isinstance(val, (int, float, complex)): return val # replace together standing abbreviations, example '1d12h' -> '1d 12h': val = MyTime._str2sec_prep.sub(r" \1", val) # replace abbreviation with expression: for rexp, rpl in MyTime._str2sec_parts: val = rexp.sub(rpl, val) val = MyTime._str2sec_fini.sub(r"\1+\2", val) return eval(val) class seconds2str(): """Converts seconds to string on demand (if string representation needed). Ex: seconds2str(86400*390) = 1y 3w 4d seconds2str(86400*368) = 1y 3d seconds2str(86400*365.5) = 1y seconds2str(86400*2+3600*7+60*15) = 2d 7h 15m seconds2str(86400*2+3599) = 2d 1h seconds2str(3600-5) = 1h seconds2str(3600-10) = 59m 50s seconds2str(59) = 59s """ def __init__(self, sec): self.sec = sec def __str__(self): # s = str(datetime.timedelta(seconds=int(self.sec))) # return s if s[-3:] != ":00" else s[:-3] s = self.sec; c = 3 # automatic accuracy: round by large values (and maximally 3 groups) if s >= 31536000: # a year as 365*24*60*60 (don't need to consider leap year by this accuracy) s = int(round(float(s)/86400)) # round by a day r = str(s//365) + 'y '; s %= 365 if s >= 7: r += str(s//7) + 'w '; s %= 7 if s: r += str(s) + 'd ' return r[:-1] if s >= 604800: # a week as 24*60*60*7 s = int(round(float(s)/3600)) # round by a hour r = str(s//168) + 'w '; s %= 168 if s >= 24: r += str(s//24) + 'd '; s %= 24 if s: r += str(s) + 'h ' return r[:-1] if s >= 86400: # a day as 24*60*60 s = int(round(float(s)/60)) # round by a minute r = str(s//1440) + 'd '; s %= 1440 if s >= 60: r += str(s//60) + 'h '; s %= 60 if s: r += str(s) + 'm ' return r[:-1] if s >= 3595: # a hour as 60*60 (- 5 seconds) s = int(round(float(s)/10)) # round by 10 seconds r = str(s//360) + 'h '; s %= 360 if s >= 6: # a minute r += str(s//6) + 'm '; s %= 6 return r[:-1] r = '' if s >= 60: # a minute r += str(s//60) + 'm '; s %= 60 if s: # remaining seconds r += str(s) + 's ' elif not self.sec: # 0s r = '0 ' return r[:-1] def __repr__(self): return self.__str__()
Save File
Cancel