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Closes #14267: Corrected computation of rollover filename.

This commit is contained in:
Vinay Sajip 2012-03-13 12:10:33 +00:00
parent 1732ab4f15
commit 27f48979ca
1 changed files with 15 additions and 6 deletions
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21
Lib/logging/handlers.py
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@ -270,9 +270,10 @@ class TimedRotatingFileHandler(BaseRotatingHandler):
dstAtRollover = time.localtime(newRolloverAt)[-1]
if dstNow != dstAtRollover:
if not dstNow: # DST kicks in before next rollover, so we need to deduct an hour
newRolloverAt = newRolloverAt - 3600
addend = -3600
else: # DST bows out before next rollover, so we need to add an hour
newRolloverAt = newRolloverAt + 3600
addend = 3600
newRolloverAt += addend
result = newRolloverAt
return result
@ -323,11 +324,20 @@ class TimedRotatingFileHandler(BaseRotatingHandler):
self.stream.close()
self.stream = None
# get the time that this sequence started at and make it a TimeTuple
currentTime = int(time.time())
dstNow = time.localtime(currentTime)[-1]
t = self.rolloverAt - self.interval
if self.utc:
timeTuple = time.gmtime(t)
else:
timeTuple = time.localtime(t)
dstThen = timeTuple[-1]
if dstNow != dstThen:
if dstNow:
addend = 3600
else:
addend = -3600
timeTuple = time.localtime(t + addend)
dfn = self.baseFilename + "." + time.strftime(self.suffix, timeTuple)
if os.path.exists(dfn):
os.remove(dfn)
@ -337,19 +347,18 @@ class TimedRotatingFileHandler(BaseRotatingHandler):
os.remove(s)
self.mode = 'w'
self.stream = self._open()
currentTime = int(time.time())
newRolloverAt = self.computeRollover(currentTime)
while newRolloverAt <= currentTime:
newRolloverAt = newRolloverAt + self.interval
#If DST changes and midnight or weekly rollover, adjust for this.
if (self.when == 'MIDNIGHT' or self.when.startswith('W')) and not self.utc:
dstNow = time.localtime(currentTime)[-1]
dstAtRollover = time.localtime(newRolloverAt)[-1]
if dstNow != dstAtRollover:
if not dstNow: # DST kicks in before next rollover, so we need to deduct an hour
newRolloverAt = newRolloverAt - 3600
addend = -3600
else: # DST bows out before next rollover, so we need to add an hour
newRolloverAt = newRolloverAt + 3600
addend = 3600
newRolloverAt += addend
self.rolloverAt = newRolloverAt
class WatchedFileHandler(logging.FileHandler):