wim/simple_backup
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- fix determination of which to keep

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- verbose is more verbose
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Wim Pomp
2021-03-29 11:36:48 +02:00
parent 2db5d4d135
commit 6184d6d30a
1 changed files with 17 additions and 7 deletions
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24
backup.py
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@@ -26,21 +26,21 @@ def weeks(d, n=4):
l = {} l = {}
for i in d[-7*n:]: for i in d[-7*n:]:
l[(i.year, i.isocalendar()[1])] = i l[(i.year, i.isocalendar()[1])] = i
return list(l.values()) return sorted(l.values())[-n:]
def months(d, n=12): def months(d, n=12):
l = {} l = {}
for i in d[-int(30.4375*n):]: for i in d[-31*n:]:
l[(i.year, i.month)] = i l[(i.year, i.month)] = i
return list(l.values()) return sorted(l.values())[-n:]
def years(d, n=10): def years(d, n=10):
l = {} l = {}
for i in d[-int(365.25*n):]: for i in d[-366*n:]:
l[i.year] = i l[i.year] = i
return list(l.values()) return sorted(l.values())[-n:]
if __name__ == '__main__': if __name__ == '__main__':
@@ -53,8 +53,8 @@ if __name__ == '__main__':
parser.add_argument('-l', '--latest', help='name of latest backup', default='latest') parser.add_argument('-l', '--latest', help='name of latest backup', default='latest')
args = parser.parse_args() args = parser.parse_args()
verbose = args.verbose
run = not args.dry_run run = not args.dry_run
verbose = args.verbose or not run
if not run: if not run:
print('Dry-run: do not actually change anything.') print('Dry-run: do not actually change anything.')
@@ -88,11 +88,21 @@ if __name__ == '__main__':
fn = [os.path.split(i)[1] for i in f] fn = [os.path.split(i)[1] for i in f]
f = {date(int(j[:4]), int(j[4:6]), int(j[6:8])): i for i, j in zip(f, fn)} f = {date(int(j[:4]), int(j[4:6]), int(j[6:8])): i for i, j in zip(f, fn)}
keys = sorted(list(f.keys())) keys = sorted(list(f.keys()))
if verbose:
print('Keeping these backups:')
for fun in (days, weeks, months, years):
print(' {}:'.format(fun.__name__))
for i in fun(keys):
print(' {}'.format(i))
keep = list(set(days(keys) + weeks(keys) + months(keys) + years(keys))) keep = list(set(days(keys) + weeks(keys) + months(keys) + years(keys)))
keep = {f[i] for i in keep} keep = {f[i] for i in keep}
delete = set(f.values()) - keep delete = set(f.values()) - keep
if verbose: if verbose:
print('Deleting old backups: {}'.format(sorted(list(delete)))) print('Deleting old backups:')
for i in sorted(delete):
print(' {}'.format(i))
if run: if run:
for i in delete: for i in delete:
if os.path.exists(i): if os.path.exists(i):