00001 import os,sys,time,calendar,pytz
00002 from datetime import datetime,timedelta
00003
00004 class lumiTime(object):
00005 def __init__(self):
00006 self.coraltimefm='MM/DD/YY HH24:MI:SS'
00007 self.pydatetimefm='%m/%d/%y %H:%M:%S'
00008 self.nbx=3564
00009 self.bunchspace_us=0.02495
00010 self.bunchspace_s=24.95e-09
00011
00012 def timestampTodatetimeUTC(self,ts):
00013 return datetime.fromtimestamp(ts,tz=pytz.utc)
00014
00015 def LSDuration(self,norbits):
00016 return timedelta(microseconds=(self.nbx*norbits*self.bunchspace_us))
00017
00018 def OrbitDuration(self):
00019 return timedelta(microseconds=(self.nbx*self.bunchspace_us))
00020
00021 def OrbitToTimeStr(self,begStrTime,orbitnumber,begorbit=0,customfm=''):
00022 '''
00023 given a orbit number, return its corresponding time. Assuming begin time has orbit=0
00024 '''
00025 return self.DatetimeToStr(self.StrToDatetime(begStrTime)+(orbitnumber-begorbit)*self.OrbitDuration(),customfm=customfm)
00026 def OrbitToTime(self,begStrTime,orbitnumber,begorbit=0,customfm=''):
00027 '''
00028 given a orbit number, return its corresponding time. Default run begin time counting from orbit=0
00029 '''
00030 return self.StrToDatetime(begStrTime,customfm=customfm)+(orbitnumber-begorbit)*self.OrbitDuration()
00031 def OrbitToLocalTimestamp(self,begStrTime,orbitnumber,begorbit=0,customfm=''):
00032 '''
00033 given a orbit number, return its corresponding unixtimestamp. Default run begin time counting from orbit=0
00034 '''
00035 os.environ['TZ']='CET'
00036 time.tzset()
00037 orbittime=self.OrbitToTime(begStrTime,orbitnumber,begorbit=begorbit,customfm=customfm)
00038 return time.mktime(orbittime.timetuple())+orbittime.microsecond/1e6
00039
00040 def OrbitToUTCTimestamp(self,begStrTime,orbitnumber,begorbit=0,customfm=''):
00041 '''
00042 given a orbit number, return its corresponding unixtimestamp. Default run begin time counting from orbit=0
00043 '''
00044 os.environ['TZ']='UTC'
00045 time.tzset()
00046 orbittime=self.OrbitToTime(begStrTime,orbitnumber,begorbit=begorbit,customfm=customfm)
00047 return time.mktime(orbittime.timetuple())+(orbittime.microsecond/1e6)
00048 def StrToDatetime(self,strTime,customfm=''):
00049 '''convert string timestamp to python datetime
00050 '''
00051 result=''
00052 try:
00053 if not customfm:
00054 result=datetime.strptime(strTime,self.pydatetimefm)
00055 else:
00056 result=datetime.strptime(strTime,customfm)
00057 except Exception,er:
00058 print str(er)
00059 return result
00060 def DatetimeToStr(self,timeValue,customfm=''):
00061 '''convert python datetime to string timestamp
00062 '''
00063 result=''
00064 try:
00065 if not customfm:
00066 result=timeValue.strftime(self.pydatetimefm)
00067 else:
00068 result=timeValue.strftime(customfm)
00069 except Exception,er:
00070 print str(er)
00071 return result
00072 if __name__=='__main__':
00073 begTimeStr='03/30/10 10:10:01'
00074 c=lumiTime()
00075 print 'orbit 0 : ',c.OrbitToTime(begTimeStr,0,0)
00076 print 'orbit 1 : ',c.OrbitToTime(begTimeStr,1,0)
00077 print 'orbit 262144 : ',c.OrbitToTime(begTimeStr,262144,0)
00078 print 'orbit 0 : ',c.OrbitToUTCTimestamp(begTimeStr,0,0);
00079 print 'orbit 0 : ',c.OrbitToLocalTimestamp(begTimeStr,0,0);
1.7.3