borgmatic/borgmatic/borg/check.py

86 lines
2.7 KiB
Python

import os
import subprocess
from borgmatic.borg import extract
from borgmatic.verbosity import VERBOSITY_SOME, VERBOSITY_LOTS
DEFAULT_CHECKS = ('repository', 'archives')
def _parse_checks(consistency_config):
'''
Given a consistency config with a "checks" list, transform it to a tuple of named checks to run.
For example, given a retention config of:
{'checks': ['repository', 'archives']}
This will be returned as:
('repository', 'archives')
If no "checks" option is present, return the DEFAULT_CHECKS. If the checks value is the string
"disabled", return an empty tuple, meaning that no checks should be run.
'''
checks = consistency_config.get('checks', [])
if checks == ['disabled']:
return ()
return tuple(check for check in checks if check.lower() not in ('disabled', '')) or DEFAULT_CHECKS
def _make_check_flags(checks, check_last=None):
'''
Given a parsed sequence of checks, transform it into tuple of command-line flags.
For example, given parsed checks of:
('repository',)
This will be returned as:
('--repository-only',)
Additionally, if a check_last value is given, a "--last" flag will be added.
'''
last_flag = ('--last', str(check_last)) if check_last else ()
if checks == DEFAULT_CHECKS:
return last_flag
return tuple(
'--{}-only'.format(check) for check in checks
if check in DEFAULT_CHECKS
) + last_flag
def check_archives(verbosity, repository, consistency_config, remote_path=None):
'''
Given a verbosity flag, a local or remote repository path, a consistency config dict, and a
command to run, check the contained Borg archives for consistency.
If there are no consistency checks to run, skip running them.
'''
checks = _parse_checks(consistency_config)
check_last = consistency_config.get('check_last', None)
if set(checks).intersection(set(DEFAULT_CHECKS)):
remote_path_flags = ('--remote-path', remote_path) if remote_path else ()
verbosity_flags = {
VERBOSITY_SOME: ('--info',),
VERBOSITY_LOTS: ('--debug',),
}.get(verbosity, ())
full_command = (
'borg', 'check',
repository,
) + _make_check_flags(checks, check_last) + remote_path_flags + verbosity_flags
# The check command spews to stdout/stderr even without the verbose flag. Suppress it.
stdout = None if verbosity_flags else open(os.devnull, 'w')
subprocess.check_call(full_command, stdout=stdout, stderr=subprocess.STDOUT)
if 'extract' in checks:
extract.extract_last_archive_dry_run(verbosity, repository, remote_path)