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##########################################################################
#
# pgAdmin 4 - PostgreSQL Tools
#
# Copyright (C) 2013 - 2024, The pgAdmin Development Team
# This software is released under the PostgreSQL Licence
#
##########################################################################
import re
from logging import handlers
class EnhancedRotatingFileHandler(handlers.TimedRotatingFileHandler,
handlers.RotatingFileHandler):
"""
Handler for logging to a set of files, which switches from one file
to the next when the current file reaches a certain size, or at certain
timed intervals
@filename - log file name
@max_bytes - file size in bytes to rotate file
@interval - Duration to rotate file
@backup_count - Maximum number of files to retain
@encoding - file encoding
@when - 'when' events supported:
# S - Seconds
# M - Minutes
# H - Hours
# D - Days
# midnight - roll over at midnight
# W{0-6} - roll over on a certain day; 0 - Monday
Here we are defaulting rotation with minutes interval
"""
def __init__(self, filename, max_bytes=1, interval=60, backup_count=0,
encoding=None, when='M'):
max_bytes = max_bytes * 1024 * 1024
handlers.TimedRotatingFileHandler.__init__(self, filename=filename,
when=when,
interval=interval,
backupCount=backup_count,
encoding=encoding)
handlers.RotatingFileHandler.__init__(self, filename=filename,
mode='a',
maxBytes=max_bytes,
backupCount=backup_count,
encoding=encoding)
# Time & Size combined rollover
def shouldRollover(self, record):
return handlers.TimedRotatingFileHandler.shouldRollover(self, record) \
or handlers.RotatingFileHandler.shouldRollover(self, record)
# Roll overs current file
def doRollover(self):
self.suffix = "%Y-%m-%d_%H-%M-%S"
self.extMatch = r"^\d{4}-\d{2}-\d{2}_\d{2}-\d{2}-\d{2}(\.\w+)?$"
self.extMatch = re.compile(self.extMatch, re.ASCII)
handlers.TimedRotatingFileHandler.doRollover(self)