source: geniuswebcore/geniusweb/progress/ProgressTime.py@ 100

Last change on this file since 100 was 100, checked in by ruud, 19 months ago

python installs also wheel to avoid error messages

File size: 2.2 KB
Line 
1from datetime import datetime
2
3from geniusweb.progress.Progress import Progress
4
5
6class ProgressTime (Progress):
7 '''
8 keeps track of progress towards the Deadline and the time/rounds left.
9 immutable. However, the time progresses nevertheless since this refers to the
10 system clocks. immutable.
11 '''
12
13 def __init__(self, duration: int, start:datetime):
14 '''
15 @param d the duration, eg {@link DeadlineTime#getDuration()}. Must be
16 > 0.
17 @param start the start Date (unix time in millisecs since 1970). See
18 {@link System#currentTimeMillis()}. WARNING
19 due to a bug in python for windows, this value must be
20 at least 100000 seconds above jan. 1, 1970.
21 '''
22 self._start = start;
23 self._duration = 1 if duration == None or duration <= 0 else duration
24
25 def get(self, currentTimeMs:int) -> float:
26 delta = currentTimeMs - 1000 * datetime.timestamp(self._start);
27 # double should have ~53 digits of precision, and we're computing
28 # deltas here.
29 # 2^53 millis seems plenty for our purposes so no need to use
30 # BigDecimal here.
31 ratio:float = delta / self._duration;
32 if ratio > 1:
33 ratio = 1
34 elif ratio < 0:
35 ratio = 0
36 return ratio
37
38 def isPastDeadline(self, currentTimeMs:int) -> bool:
39 return currentTimeMs > int(datetime.timestamp(self._start) * 1000) + self._duration;
40
41 def getStart(self) -> datetime:
42 '''
43 @return time measured in milliseconds, between the start time and
44 midnight, January 1, 1970 UTCas returned from
45 {@link System#currentTimeMillis()}
46 '''
47 return self._start;
48
49 def getDuration(self) -> int:
50 '''
51 @return duration in milliseconds.
52 '''
53 return self._duration;
54
55 def getTerminationTime(self) -> datetime:
56 return datetime.fromtimestamp((int(datetime.timestamp(self._start) * 1000) + self._duration) / 1000.);
57
58 def __repr__(self):
59 return "ProgressTime[" + str(int(1000 * datetime.timestamp(self._start))) + " , " + str(self._duration) + "ms]"
60
61 def __hash__(self):
62 return hash((self._duration, self._start))
63
64 def __eq__(self, other):
65 return isinstance(other, self.__class__) \
66 and self._duration == other._duration \
67 and self._start == other._start
68
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