Parse crontab configuration file code implemented by Python

#/usr/bin/env python#-*-coding:utf-8-*-"" "1. Parse the five-digit parameter in the crontab configuration file (time-sharing week) get their corresponding range of values 2. Compare the timestamp with a row of time parameters in the crontab configuration to determine if the timestamp is within the configured time range "" "# $Id $ import Re, times, Sysfrom Core.FDateTime.FDateTime Import Fdatetime def get_struct_time (time_stamp_int): "" "gets the formatted time of day by integer timestamp args:time_stamp_int for the passed value is timestamp (shaping), such as: 1332888820 after localtime converted into time.struct_time (tm_year=2012, tm_mon=3, tm_mday=28, tm_hour=6, tm_min=53, TM_SEC=40, TM _wday=2, tm_yday=88, tm_isdst=0) return:list____ return time-of-Day Week "" "St_time = Time.localtime (time_stamp_int) return [st_time.tm _min, St_time.tm_hour, St_time.tm_mday, St_time.tm_mon, St_time.tm_wday] def get_strptime (Time_str, Str_format): "" " Gets the integer timestamp from the string args:time_str the timestamp of the string type as ' 31/jul/2013:17:46:01 ' str_format specifies the format of the time_str as '%d/%b/%y:%h:%m:%s ' Return: Returns a 10-bit integer (int) timestamp, such as 1375146861 "" "Return Int (Time.mktime (Time.strptime (Time_str, Str_format))) def get_str_time (time_ Stamp, str_format= '%y%m%d%h%m '): "" "gets the timestamp, args:time_stamp a 10-bit integer (int) timestamp, such as 1375146861str_format specifies the return format, the value type isString Strrturn: Return format default is month day, July 9, 2013 1:3: 201207090103 "" "Return Time.strftime ("%s "% Str_format, Time.localtime (time _stamp)) def match_cont (Patten, cont): "" "regular match (exact match) args:patten regular expression cont____ match content return:true or False" "" res = Re.match (Patten, cont) if Res:return trueelse:return False def handle_num (Val, ranges= (0, +), Res=list ()): "" Handles pure Numbers "" " val = Int (val) if Val >= ranges[0] and Val <= Ranges[1]:res.append (val) return res def handle_nlist (Val, ranges= (0, 10 0), Res=list ()): "" "handles a list of numbers such as 1,2,3,6" "" Val_list = Val.split (', ') for tmp_val in val_list:tmp_val = Int (tmp_val) if Tmp_val &G t;= Ranges[0] and Tmp_val <= ranges[1]:res.append (tmp_val) return res def Handle_star (Val, ranges= (0, +), res=list ()) : "" Processing asterisk "" "if val = = ' * ': Tmp_val = ranges[0]while tmp_val <= ranges[1]:res.append (tmp_val) tmp_val = Tmp_val + 1return r Es def handle_starnum (Val, ranges= (0, +), Res=list ()): "" "asterisk/number combination such as */3" "" TMP = Val.split ('/') val_step = Int (tmp[1]) if V Al_step < 1:return resval_tmp = INT (tmp[1]) While Val_tmp <= ranges[1]:res.append (val_tmp) val_tmp = val_tmp + val_stepreturn res def handle_range (Val, ranges= (0, 1 XX), Res=list ()): "" "processing interval such as 8-20" "" TMP = Val.split ('-') range1 = Int (tmp[0]) range2 = Int (tmp[1]) Tmp_val = range1if Range1 &l T 0:return reswhile tmp_val <= range2 and Tmp_val <= ranges[1]:res.append (tmp_val) tmp_val = Tmp_val + 1return Res def Handle_rangedv (Val, ranges= (0, +), Res=list ()): "" "Processing interval/step combinations such as 8-20/3" "" TMP = Val.split ('/') Range2 = Tmp[0].split ('-') Val_start = Int (range2[0]) val_end = Int (range2[1]) val_step = Int (tmp[1]) if (Val_step < 1) or (Val_start < 0): return resval_tmp = Val_startwhile val_tmp <= val_end and val_tmp <= ranges[1]:res.append (val_tmp) val_tmp = val_tmp + val_s Tepreturn Res def parse_conf (conf, ranges= (0, five), Res=list ()): "" "resolves crontab any one of the time parameters #去除空格, and then splits conf = Conf.strip ( "). Strip (') conf_list = Conf.split (', ') other_conf = []number_conf = []for conf_val in Conf_list:if match_cont (PATTEN[' n Umber '], conf_val): #记Digital Parameters Number_conf.append (conf_val) Else: #记录拆分后纯数字以外的参数, such as wildcard *, Interval 0-8, and 0-8/3 other_conf.append (conf_val) if other_conf: #处理纯数字外各种参数for conf_val in Other_conf:for key, PTN in Patten.items (): If Match_cont (PTN, conf_val): res = PATTEN _handler[key] (Val=conf_val, ranges=ranges, res=res) if Number_conf:if len (number_conf) > 1 or other_conf: #纯数字多于1, or pure numbers coexist with other parameters, the number is used as the time list res = handle_nlist (val= ', '. Join (number_conf), ranges=ranges, res=res) Else: #只有一个纯数字存在, the number is time Interval res = Handle_num (val=number_conf[0], ranges=ranges, Res=res) return res def parse_crontab_time (conf_string): "" " Parse crontab Time configuration Parameters args:conf_string configuration content (total five values: Day and month) range of values minutes: 0-59 hours: 1-23 days: 1-3 January: 1-12 weeks: 0-6 (0 for Sunday) Return:crontab_ran GE list format, time-of-the-time Friday parameters corresponding to the value range "" "Time_limit= ((0), (1, Max), (1, +), (1, Nine), (0, 6)) Crontab_range = []clist = [] Conf_length = 5tmp_list = Conf_string.split (") for Val in Tmp_list:if len (clist) = = Conf_length:breakif Val:clist.append ( val) If Len (clist)! = conf_length:return-1, ' config error whith [%s] '% Conf_stringcindex = 0for conf in clist:res_conf = []res_conf = parse_conf (conf, Ranges=time_limit[cindex], res=res_conf) if not res_conf:return-1, ' config error whith [%s] '% conf_stringcrontab_range.append (res_conf) CIndex = cin Dex + 1return 0, Crontab_range def time_match_crontab (Crontab_time, time_struct): "" Compares the timestamp to a row of time parameters in the crontab configuration, Determines whether the timestamp is within the configured time range Args:crontab_time____crontab configuration five time (day of the Week) parameter corresponding time value range time_struct____ An integer timestamp, such as: 1375027200 corresponding to the Time-of-day week return:tuple status code, status description "" "CIndex = 0for val in time_struct:if Val not in Crontab_time[cindex]:return 0, Falsecinde x = CIndex + 1return 0, True def close_to_cron (Crontab_time, time_struct): "" "Coron in the specified range (crontab_time) closest to the specified time Time_struc The value of T "" "close_time = Time_structcindex = 0for val_struct in time_struct:offset_min = Val_structval_close = Val_structfor va L_cron in crontab_time[cindex]:offset_tmp = val_struct-val_cronif offset_tmp > 0 and Offset_tmp < Offset_min:val_c lose = Val_structoffset_min = Offset_tmpclosE_time[cindex] = Val_closecindex = CIndex + 1return close_time def cron_time_list (Cron_time,year_num=int (Get_str_time ( Time.time (), "%Y"), Limit_start=get_str_time (Time.time (), "%y%m%d%h%m"), Limit_end=get_str_time (Time.time () + 86400 , "%y%m%d%h%m")): #print "\nfrom", Limit_start, ' to ', Limit_end "" Gets the time stamp of all points in the value range of the crontab time configuration parameter Args:cron_time match cron The tab configuration specifies all points in time year_num____ specifies the year in which the Limit_start start time rturn:list All points of time, consisting of the time of day and month, e.g. July 29, 2013 18:56:201307291856) "" "#按小时 and minute assembly Hour_minute = []for minute in cron_time[0]:minute = str (minute) If Len ( minute) < 2:minute = ' 0%s '% minutefor hour in cron_time[1]:hour = str (hour) If Len (hour) < 2:hour = ' 0%s '% hourhour  _minute.append ('%s%s '% (hour, minute)) #按天 and hour assembly DAY_HM = []for day in cron_time[2]:d ay = str (days) If Len (day) < 2:day =  ' 0%s '% dayfor hour_mnt in hour_minute:day_hm.append ('%s%s '% (day, hour_mnt)) #按月 and days assembly MONTH_DHM = [] #只有30天的月份month_short = [']for ', ' ', ' ', ' ', ' ', ' ' ' ', ' ' One ', ' month in cron_time[3]:month = STR (month) if Len (month) < 2:month = ' 0%s '% monthfor day_hm_s in day_hm:if month = = ' ": if ((not year_num% 4) and (year_num% 1 ) or (not year_num)): #闰年2月份有29天if int (day_hm_s[:2]) > 29:continueelse: #其它2月份有28天if int (day_hm_s[:2]) > 28: Continueif Month in Month_short:if Int (day_hm_s[:2]) > 30:continuemonth_dhm.append ('%s%s '% (month, day_hm_s)) #按年 and months Group  Install Len_start = Len (limit_start) len_end = Len (limit_end) month_dhm_limit = []for month_dhm_s in month_dhm:time_ymdhm = '%s%s ' % (str (year_num), month_dhm_s) #开始时间 \ End time excluding if (int (Time_ymdhm[:len_start]) < int (limit_start)) or \ (int (time_ Ymdhm[:len_end]) > int (limit_end)): Continuemonth_dhm_limit.append (TIME_YMDHM) If Len (Cron_time[4]) < 7:# Exclude Month_dhm_week = []for time_minute in month_dhm_limit:str_time = Time.strptime (Time_minute, '%Y%m%d%H%M%S ') by not specifying the time of week ) if Str_time.tm_wday in Cron_time[4]:month_dhm_week.append (time_minute) return Month_dhm_weekreturn Month_dhm_limit # Crontab timing Parameters Regular Matching Patten = {#纯数字 ' number ': ' ^[0-9]+$ ', #数字列表, such as 1,2,3,6 ' num_list ': ' ^[0-9]+ ([,][0-9]+) +$ ', #星号 * ' star ': ' ^\*$ ', #星号/number combinations such as */3 ' star_num ': ' ^\*\/[0-9]+$ ', #区间 as 8-20 ' range ': ' ^[0-9]+[\-][0-9]+$ ', #区间/step combination such as 8-20/3 ' range_div ': ' ^[0-9]+[\-][0-9]+[\/][0-9]+$ ' #区间/step list combination, e.g. 8-20/ 3,21,22,34# ' range_div_list ': ' ^ ([0-9]+[\-][0-9]+[\/][0-9]+) ([,][0-9]+) +$ '} #各正则对应的处理方法PATTEN_HANDLER = {' Number ': Handle_num, ' num_list ': handle_nlist, ' star ': Handle_star, ' star_num ': handle_starnum, ' range ': Handle_range, ' Range_ Div ': Handle_rangedv} def isdo (strs,tips=none): "" "to determine if the match is successful! "" "Try:tips = Tips==none and" File name format error: Job_ month-week-day-time-minute _ filename. txt "or Tipstimer = Strs.replace (' @ '," * "). Replace ('% ', '/'). Split ('_') [1]month,week,day,hour,mins = Timer.split ('-') conf_string = mins+ "" +hour+ "" +day+ "" +month+ "" +weekres, desc = Parse_crontab_time (conf_string) If res = = 0:cron_time = Descelse:return False now =fdatetime.now () now = Fdatetime.dateto String (now, "%y%m%d%h%m00") Time_stamp = Fdatetime.strtotime (now, "%y%m%d%h%m00") #time_stamp = Int (Time.time ()) #解析 Time stamp corresponds to the day of the week_struct = Get_struct_time (time_stamp) match_res = Time_match_crontab (Cron_time, time_struct) return match_res[1]except :p rint Tipsreturn False def main (): "" "Test with Instance" "" #crontab配置中一行时间参数 #conf_string = ' */10 * * * * (CD/OPT/PYTHONPM/DEVPAPPS;/u sr/local/bin/python2.5 data_test.py>>output_error.txt) ' conf_string = ' */10 * * * * ' #时间戳time_stamp = Int (time.time ()) #解析crontab时间配置参数 time-of-day day and month range of values res, desc = parse_crontab_time (conf_string) If res = = 0:cron_time = Descelse:print de Scsys, Exit ( -1) print "\nconfig:", conf_stringprint "\nparse result (range for crontab):" Print "minute:", Cron_time[0]pri NT "Hour:", Cron_time[1]print "Day:", cron_time[2]print "month:", Cron_time[3]print "Week Day:", Cron_time[4] #解析 Time_struct = Get_struct_time (time_stamp) print "\nstruct Time (minute hour day months week) for%d:"% \ Tim E_stamp, Time_struct #将时间戳与crontab配置中一行时间参数对比, determines whether the timestamp is within the configured time frame match_res = Time_match_crontab (Cron_time, time_ struct) print "\nmatching result:", match_res #crontab配置设定范围中最近接近时指定间戳的一组时间most_close = Close_to_cron (Cron_time, time_struct) print "\nin range of crontab time which is most colse to struct ", most_close time_list = cron_time_list (cron_time) print" \ n%d times need to tart-up:\n "% Len ( time_list) Print time_list[:10], ' ... ' if __name__ = = ' __main__ ': #请看 use instance STRs = ' job_@-@-@-@-@_test02.txt.sh ' Print isdo (s TRS) #main () 0 ")

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