Code style changes
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cbc2db2a93
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clean-backups.py
100
clean-backups.py
@ -10,14 +10,15 @@ DEFAULT_WEEKLY = 4
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DEFAULT_MONTHLY = 3
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DEFAULT_TIMESTAMP_FORMAT = "%Y%m%d"
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class BackupFile():
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class BackupFile:
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"""
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Manipulations with backup files
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Arguments:
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* retention_daily - daily renention period
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* retention_daily - daily retention period
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* retention_weekly - weekly retention period
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* retention_monthly - monthly retention perod
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* retention_monthly - monthly retention period
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* file_path (optional) - file path
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* dateformat (optional) - format of timestamps (default is '%Y%m%d')
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"""
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@ -26,15 +27,15 @@ class BackupFile():
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retention_daily,
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retention_weekly,
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retention_monthly,
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file_path = None,
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dateformat = "%Y%m%d") -> None:
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file_path=None,
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dateformat="%Y%m%d"
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) -> None:
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self.file_path = file_path
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self.daily = retention_daily
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self.weekly = retention_weekly
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self.monthly = retention_monthly
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self.dateformat = dateformat
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curr_date = date.today() # Maybe this will be used to specify date as starting point...
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curr_date = date.today() # Maybe this will be used to specify date as starting point...
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if self.file_path is None:
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self.file_name = None
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else:
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@ -42,17 +43,17 @@ class BackupFile():
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dates = []
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# Daily
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for i in range(0, self.daily):
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day = curr_date - timedelta(days = i)
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day = curr_date - timedelta(days=i)
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dates.append(day)
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# Weekly
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monday = curr_date - timedelta(days=date.weekday(curr_date))
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for i in range(0,self.weekly):
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day = monday - timedelta( days = (i * 7))
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for i in range(0, self.weekly):
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day = monday - timedelta(days=(i*7))
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if day not in dates:
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dates.append(day)
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# Monthly
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day = curr_date.replace(day=1)
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for i in range(0,self.monthly):
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for i in range(0, self.monthly):
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if day not in dates:
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dates.append(day)
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day = (day - timedelta(days=1)).replace(day=1)
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@ -61,14 +62,14 @@ class BackupFile():
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def new_file(
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self,
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file_path,
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retention_daily = None,
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retention_weekly = None,
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retention_monthly = None,
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dateformat = None):
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retention_daily=None,
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retention_weekly=None,
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retention_monthly=None,
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dateformat=None
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):
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"""
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Create new instance of BackupFile, can be used for retention settings inheritance.
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"""
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if retention_daily is None:
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retention_daily = self.daily
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if retention_weekly is None:
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@ -104,7 +105,7 @@ class BackupFile():
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break
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return need_remove
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def remove(self, force_remove = False):
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def remove(self, force_remove=False):
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"""
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Remove file
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@ -122,66 +123,67 @@ class BackupFile():
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if answer == "y":
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os.unlink(self.file_path)
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def remove_if_needed(self, force_remove = False):
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def remove_if_needed(self, force_remove=False):
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"""
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Remove file if it's too old.
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"""
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if self.need_remove():
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self.remove(force_remove = force_remove)
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self.remove(force_remove=force_remove)
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# Argument parser
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parser = argparse.ArgumentParser(
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description = "Cleanup old backups",
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epilog = "For a complete timestamp format description, see the python strftime() " +
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"documentation: https://docs.python.org/3/library/datetime.html" +
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"#strftime-strptime-behavior"
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description="Cleanup old backups",
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epilog="For a complete timestamp format description, see the python strftime() " +
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"documentation: https://docs.python.org/3/library/datetime.html" +
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"#strftime-strptime-behavior"
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)
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# path argument
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parser.add_argument(
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"path",
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metavar = "PATH",
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type = str,
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nargs = 1,
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help = "directory path"
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metavar="PATH",
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type=str,
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nargs=1,
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help="directory path"
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)
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# daily argument
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parser.add_argument(
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"-d", "--daily",
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type = int,
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default = DEFAULT_DAILY,
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metavar = "N",
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help = f"keep N daily backups, default: {DEFAULT_DAILY}"
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type=int,
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default=DEFAULT_DAILY,
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metavar="N",
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help=f"keep N daily backups, default: {DEFAULT_DAILY}"
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)
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# weekly argument
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parser.add_argument(
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"-w", "--weekly",
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type = int,
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default = DEFAULT_WEEKLY,
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metavar = "N",
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help = f"keep N weekly backups, default: {DEFAULT_WEEKLY}"
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type=int,
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default=DEFAULT_WEEKLY,
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metavar="N",
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help=f"keep N weekly backups, default: {DEFAULT_WEEKLY}"
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)
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# monthly argument
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parser.add_argument(
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"-m", "--monthly",
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type = int,
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default = DEFAULT_MONTHLY,
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metavar = "N",
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help = f"keep N monthly backups, default: {DEFAULT_MONTHLY}"
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type=int,
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default=DEFAULT_MONTHLY,
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metavar="N",
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help=f"keep N monthly backups, default: {DEFAULT_MONTHLY}"
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)
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# force removal
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parser.add_argument(
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"-f", "--force",
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action="store_true",
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help = "suppress remove confirmation"
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help="suppress remove confirmation"
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)
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# timestamp format
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parser.add_argument(
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"-t",
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"--timestamp-format",
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type = str,
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default = DEFAULT_TIMESTAMP_FORMAT,
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metavar = "FORMAT",
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help = f"format of timestamp, default: {DEFAULT_TIMESTAMP_FORMAT}".replace(r"%",r"%%")
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type=str,
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default=DEFAULT_TIMESTAMP_FORMAT,
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metavar="FORMAT",
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help=f"format of timestamp, default: {DEFAULT_TIMESTAMP_FORMAT}".replace(r"%", r"%%")
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)
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args = parser.parse_args()
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@ -194,10 +196,10 @@ timestamp_format = args.timestamp_format
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# File processing
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files = BackupFile(
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retention_daily = daily,
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retention_weekly = weekly,
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retention_monthly = monthly,
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dateformat = timestamp_format
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retention_daily=daily,
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retention_weekly=weekly,
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retention_monthly=monthly,
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dateformat=timestamp_format
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)
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# Generate file list with full paths
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paths = [
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@ -206,4 +208,4 @@ paths = [
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]
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for path in paths:
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f = files.new_file(path)
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f.remove_if_needed(force_remove = force)
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f.remove_if_needed(force_remove=force)
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