78 lines
1.8 KiB
Python
78 lines
1.8 KiB
Python
# -*- coding: utf-8 -*-
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from zipfile import ZipFile, ZIP_DEFLATED
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from datetime import datetime
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from os import walk, unlink
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from os.path import join as osjoin
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from os.path import isfile
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from glob import glob
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# Backup plan for Docker volumes
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# ::::::::::::::::::::::::::::::
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#
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# Keep :
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#
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# - all saves the last week
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# - one save per week the last month
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# - one save per month the last year
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# Volumes Backup
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# ==============
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dt = datetime.now()
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zipname = '{0}.zip'.format(dt.strftime('%Y-%m-%d_%Hh%Mm%Ss'))
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zippath = '${DEST}' + zipname
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# Zip files
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def zipdir(path, ziph):
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# ziph is zipfile handle
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for root, dirs, files in walk(path):
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for file in files:
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pfile = osjoin(root, file)
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if isfile(pfile):
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ziph.write(pfile)
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f = ZipFile(zippath, 'w', ZIP_DEFLATED, allowZip64=True)
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zipdir('${DEST}/volumes', f)
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f.close()
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# Filter all obsolete save files
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# ==============================
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def notkeep(fname):
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fname = fname.split('/')[-1]
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ds = fname.split('_')
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if len(ds) <= 1:
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return False
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ds = ds[0]
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d = datetime.strptime(ds, '%Y-%m-%d')
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delta = dt - d
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if delta.days > 365:
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return True
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elif delta.days > 31:
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# if (delta.days %% 30) != 0:
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if (d.day != 1):
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return True
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elif delta.days > 2:
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# if (delta.days %% 7) != 0:
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if (d.weekday() != 0) and (d.day != 1):
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return True
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else:
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return False
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# Filters zip files and keeps only legitimate ones
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# ================================================
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files = glob('${DEST}/*.zip')
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backups_to_remove = filter(notkeep, files)
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if len(backups_to_remove) > 0:
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print('Save files outdated, will be deleted : \n\n* ' +
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'\n* '.join(backups_to_remove))
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for b in backups_to_remove:
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unlink(b)
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