forked from borgmatic-collective/borgmatic
76 lines
2.4 KiB
Python
76 lines
2.4 KiB
Python
import logging
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from borgmatic.execute import execute_command
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logger = logging.getLogger(__name__)
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def _make_prune_flags(retention_config):
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'''
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Given a retention config dict mapping from option name to value, tranform it into an iterable of
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command-line name-value flag pairs.
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For example, given a retention config of:
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{'keep_weekly': 4, 'keep_monthly': 6}
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This will be returned as an iterable of:
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(
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('--keep-weekly', '4'),
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('--keep-monthly', '6'),
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)
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'''
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config = retention_config.copy()
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if 'prefix' not in config:
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config['prefix'] = '{hostname}-'
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elif not config['prefix']:
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config.pop('prefix')
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return (
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('--' + option_name.replace('_', '-'), str(value)) for option_name, value in config.items()
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)
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def prune_archives(
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dry_run,
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repository,
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storage_config,
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retention_config,
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local_path='borg',
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remote_path=None,
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stats=False,
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files=False,
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):
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'''
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Given dry-run flag, a local or remote repository path, a storage config dict, and a
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retention config dict, prune Borg archives according to the retention policy specified in that
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configuration.
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'''
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umask = storage_config.get('umask', None)
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lock_wait = storage_config.get('lock_wait', None)
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extra_borg_options = storage_config.get('extra_borg_options', {}).get('prune', '')
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full_command = (
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(local_path, 'prune')
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+ tuple(element for pair in _make_prune_flags(retention_config) for element in pair)
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+ (('--remote-path', remote_path) if remote_path else ())
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+ (('--umask', str(umask)) if umask else ())
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+ (('--lock-wait', str(lock_wait)) if lock_wait else ())
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+ (('--stats',) if stats and not dry_run else ())
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+ (('--info',) if logger.getEffectiveLevel() == logging.INFO else ())
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+ (('--list',) if files else ())
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+ (('--debug', '--show-rc') if logger.isEnabledFor(logging.DEBUG) else ())
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+ (('--dry-run',) if dry_run else ())
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+ (tuple(extra_borg_options.split(' ')) if extra_borg_options else ())
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+ (repository,)
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)
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if (stats or files) and logger.getEffectiveLevel() == logging.WARNING:
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output_log_level = logging.WARNING
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else:
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output_log_level = logging.INFO
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execute_command(full_command, output_log_level=output_log_level, borg_local_path=local_path)
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