rewriting backup script; config and plugins done, just need to parse it and execute
This commit is contained in:
brent s
@@ -5,18 +5,27 @@
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# we import it for various prep stuff anyways.
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# TODO: change loglevel of borg itself in subprocess to match the argparse?
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# --debug, --info (same as -v/--verbose), --warning, --error, --critical
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# TODO: switch to XML-based cfg instead of JSON. add automatic converter.
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# TODO: modify config to add repo to cfg for init? or add new operation, "add"
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import argparse
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import configparser
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import datetime
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import json
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import getpass
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import logging
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import logging.handlers
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import os
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import re
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# TODO: use borg module directly?
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import subprocess
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import sys
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# TODO: virtual env?
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try:
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from lxml import etree
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has_lxml = True
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except ImportError:
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import xml.etree.ElementTree as etree # https://docs.python.org/3/library/xml.etree.elementtree.html
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has_lxml = False
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try:
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import pymysql # not stdlib; "python-pymysql" in Arch's AUR
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@@ -31,12 +40,11 @@ except ImportError:
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has_systemd = False
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### LOG LEVEL MAPPINGS ###
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loglvls = {
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'critical': logging.CRITICAL,
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'error': logging.ERROR,
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'warning': logging.WARNING,
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'info': logging.INFO,
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'debug': logging.DEBUG}
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loglvls = {'critical': logging.CRITICAL,
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'error': logging.ERROR,
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'warning': logging.WARNING,
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'info': logging.INFO,
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'debug': logging.DEBUG}
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### THE GUTS ###
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@@ -129,7 +137,8 @@ class Backup(object):
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if self.args['dryrun']:
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return () # no-op
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if stdoutfh:
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_cmd = subprocess.run(cmd, stdout = stdoutfh,
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_cmd = subprocess.run(cmd,
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stdout = stdoutfh,
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stderr = subprocess.PIPE)
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else:
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_cmd = subprocess.run(cmd,
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@@ -297,87 +306,13 @@ class Backup(object):
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self.logger.info('END: restore')
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return()
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def miscBak(self, pkgr):
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self.logger.info('BEGIN: miscBak()')
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_cmd = None
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for p in os.environ['PATH'].split(':'):
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d = os.path.expanduser(p)
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if os.path.isfile(os.path.join(d, pkgr)):
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_pkgr = pkgr
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self.logger.debug('Package tool found at {0}'.format(_pkgr))
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else:
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_pkgr = 'pacman'
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self.logger.debug('Using {0} as package tool'.format(_pkgr))
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with open(os.path.join(self.args['stagedir'], 'pkg.lst'), 'w') as f:
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_cmd = [_pkgr,
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'-Qet',
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'--color',
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'never']
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self.cmdExec(_cmd, stdoutfh = f)
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self.logger.info('END: miscBak()')
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return()
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def mysqlBak(self):
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self.logger.info('BEGIN: mysqlBak()')
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if not has_mysql:
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self.logger.error(
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'You need to install the PyMySQL module to back up MySQL databases. Skipping.')
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return ()
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# These are mysqldump options shared by ALL databases
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_mysqlopts = ['--routines',
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'--add-drop-database',
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'--add-drop-table',
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'--allow-keywords',
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'--complete-insert',
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'--create-options',
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'--extended-insert']
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_DBs = []
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_mycnf = os.path.expanduser(os.path.join('~', '.my.cnf'))
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if not os.path.isfile(_mycnf):
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exit(
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'{0}: ERROR: Cannot get credentials for MySQL (cannot find ~/.my.cnf)!')
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_mycfg = configparser.ConfigParser()
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_mycfg._interpolation = configparser.ExtendedInterpolation()
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_mycfg.read(_mycnf)
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_sqlcfg = {s: dict(_mycfg.items(s)) for s in _mycfg.sections()}
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if 'host' not in _sqlcfg.keys():
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_socketpath = '/var/run/mysqld/mysqld.sock' # correct for Arch, YMMV.
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_mysql = pymysql.connect(unix_socket = _socketpath,
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user = _sqlcfg['client']['user'],
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passwd = _sqlcfg['client']['password'])
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else:
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_mysql = pymysql.connect(host = _sqlcfg['client']['host'],
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user = _sqlcfg['client']['user'],
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port = _sqlcfg['client']['port'],
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passwd = _sqlcfg['client']['password'])
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_cur = _mysql.cursor()
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_cur.execute('SHOW DATABASES')
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for row in _cur.fetchall():
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_DBs.append(row[0])
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self.logger.debug('Databases: {0}'.format(', '.join(_DBs)))
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for db in _DBs:
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_cmd = ['mysqldump',
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'--result-file={0}.sql'.format(
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os.path.join(self.args['mysqldir'], db))]
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# These are database-specific options
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if db in ('information_schema', 'performance_schema'):
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_cmd.append('--skip-lock-tables')
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elif db == 'mysql':
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_cmd.append('--flush-privileges')
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_cmd.extend(_mysqlopts)
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_cmd.append(db)
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self.cmdExec(_cmd)
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self.logger.info('END: mysqlBak()')
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return()
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def listRepos(self):
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print('\n\033[1mCurrently configured repositories are:\033[0m\n')
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print('\t{0}\n'.format(', '.join(self.cfg['repos'].keys())))
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if self.args['verbose']:
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print('\033[1mDETAILS:\033[0m\n')
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for r in self.args['repo']:
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print(
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'\t\033[1m{0}:\033[0m\n\t\t\033[1mPath(s):\033[0m\t'.format(
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print('\t\033[1m{0}:\033[0m\n\t\t\033[1mPath(s):\033[0m\t'.format(
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r.upper()), end = '')
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for p in self.cfg['repos'][r]['paths']:
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print(p, end = ' ')
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@@ -406,14 +341,11 @@ class Backup(object):
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print()
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else: # It's a listing inside an archive
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if self.args['verbose']:
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_fields = ['REPO:', 'PERMS:', 'OWNERSHIP:', 'SIZE:',
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'TIMESTAMP:', 'PATH:']
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_fields = ['REPO:', 'PERMS:', 'OWNERSHIP:', 'SIZE:', 'TIMESTAMP:', 'PATH:']
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for r in _results.keys():
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print('\033[1m{0}\t{1}\033[0m'.format(_fields[0], r))
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# https://docs.python.org/3/library/string.html#formatspec
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print(
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'{0[1]:<15}\t{0[2]:<15}\t{0[3]:<15}\t{0[4]:<24}\t{0[5]:<15}'.format(
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_fields))
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print('{0[1]:<15}\t{0[2]:<15}\t{0[3]:<15}\t{0[4]:<24}\t{0[5]:<15}'.format(_fields))
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for line in _results[r]:
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_fline = line.split()
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_perms = _fline[0]
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@@ -421,13 +353,11 @@ class Backup(object):
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_size = _fline[3]
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_time = ' '.join(_fline[4:7])
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_path = ' '.join(_fline[7:])
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print(
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'{0:<15}\t{1:<15}\t{2:<15}\t{3:<24}\t{4:<15}'.format(
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_perms,
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_ownership,
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_size,
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_time,
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_path))
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print('{0:<15}\t{1:<15}\t{2:<15}\t{3:<24}\t{4:<15}'.format(_perms,
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_ownership,
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_size,
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_time,
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_path))
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else:
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print('\033[1mREPO:\tPATH:\033[0m\n')
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for r in _results.keys():
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@@ -463,31 +393,26 @@ class Backup(object):
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env = _env,
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stdout = subprocess.PIPE,
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stderr = subprocess.PIPE)
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_stdout = [i.strip() for i in
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_out.stdout.decode('utf-8').splitlines()]
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_stdout = [i.strip() for i in _out.stdout.decode('utf-8').splitlines()]
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_stderr = _out.stderr.decode('utf-8').strip()
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_returncode = _out.returncode
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output[r] = _stdout
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self.logger.debug('[{0}]: (RESULT) {1}'.format(r,
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'\n'.join(
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_stdout)))
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'\n'.join(_stdout)))
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if _returncode != 0:
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self.logger.error('[{0}]: STDERR: ({2}) ({1})'.format(r,
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_stderr,
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' '.join(
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_cmd)))
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' '.join(_cmd)))
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if _stderr != '' and self.cron and _returncode != 0:
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self.logger.warning(
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'Command {0} failed: {1}'.format(' '.join(cmd),
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_err))
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del (_env['BORG_PASSPHRASE'])
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'Command {0} failed: {1}'.format(' '.join(cmd), _err))
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del(_env['BORG_PASSPHRASE'])
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if not self.args['archive']:
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if self.args['numlimit'] > 0:
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if self.args['old']:
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output[r] = output[r][:self.args['numlimit']]
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else:
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output[r] = list(reversed(output[r]))[
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:self.args['numlimit']]
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output[r] = list(reversed(output[r]))[:self.args['numlimit']]
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if self.args['invert']:
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output[r] = reversed(output[r])
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self.logger.debug('END: lister')
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@@ -495,25 +420,20 @@ class Backup(object):
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def printMoarHelp():
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_helpstr = (
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'\n\tNOTE: Sorting only applies to listing archives, NOT the '
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'contents!\n\n'
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'In order to efficiently display results, there are several options '
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'to handle it. Namely, these are:\n\n\t\t'
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'-s/--sort [direction]\n\t\t'
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'-l/--limit [number]\n\t\t'
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'-x/--invert\n\n'
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'For example, if you want to list the 5 most recently *taken* '
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'snapshots, you would use:\n\n\t\t'
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'-l 5\n\n'
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'If you would want those SAME results SORTED in the reverse order '
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'(i.e. the 5 most recently taken snapshots sorted from newest to '
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'oldest), then it would be: \n\n\t\t'
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'-l 5 -x\n\n'
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'Lastly, if you wanted to list the 7 OLDEST TAKEN snapshots in '
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'reverse order (that is, sorted from newest to oldest), that\'d be: '
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'\n\n\t\t'
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'-o -l 7 -x\n')
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_helpstr = ('\n\tNOTE: Sorting only applies to listing archives, NOT the contents!\n\n'
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'In order to efficiently display results, there are several options to handle it. '
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'Namely, these are:\n\n\t\t'
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'-s/--sort [direction]\n\t\t'
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'-l/--limit [number]\n\t\t'
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'-x/--invert\n\n'
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'For example, if you want to list the 5 most recently *taken* snapshots, you would use:\n\n\t\t'
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'-l 5\n\n'
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'If you would want those SAME results SORTED in the reverse order (i.e. the 5 most recently '
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'taken snapshots sorted from newest to oldest), then it would be: \n\n\t\t'
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'-l 5 -x\n\n'
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'Lastly, if you wanted to list the 7 OLDEST TAKEN snapshots in reverse order '
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'(that is, sorted from newest to oldest), that\'d be:\n\n\t\t'
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'-o -l 7 -x\n')
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print(_helpstr)
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exit(0)
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@@ -534,13 +454,12 @@ def parseArgs():
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os.path.join(os.path.expanduser('~'),
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'.config',
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'optools',
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'backup.json'))
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'backup.xml'))
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_defloglvl = 'info'
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######
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args = argparse.ArgumentParser(description = 'Backups manager',
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epilog = ('TIP: this program has '
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'context-specific help. e.g. '
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'try "%(prog)s list --help"'))
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epilog = ('TIP: this program has context-specific help. '
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'e.g. try "%(prog)s list --help"'))
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args.add_argument('-c', '--config',
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dest = 'cfgfile',
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default = _cfgfile,
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@@ -552,58 +471,45 @@ def parseArgs():
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default = _defloglvl,
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choices = list(loglvls.keys()),
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help = (
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'The level of logging to perform. '
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'\033[1mWARNING:\033[0m \033[1mdebug\033[0m will '
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'The level of logging to perform. \033[1mWARNING:\033[0m \033[1mdebug\033[0m will '
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'log VERY sensitive information such as passwords! '
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'Default: \033[1m{0}\033[0m'.format(_defloglvl)))
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args.add_argument('-Ld', '--log-to-disk',
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dest = 'disklog',
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action = 'store_true',
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help = (
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'If specified, log to a specific file '
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'(-Lf/--logfile) instead of the system logger.'))
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'If specified, log to a specific file (-Lf/--logfile) instead of the system logger.'))
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args.add_argument('-Lf', '--logfile',
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dest = 'logfile',
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default = _logfile,
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help = (
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'The path to the logfile, only used if '
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'-Ld/--log-to-disk is specified. '
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'Default: \033[1m{0}\033[0m (dynamic)').format(
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_logfile))
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'The path to the logfile, only used if -Ld/--log-to-disk is specified. '
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'Default: \033[1m{0}\033[0m (dynamic)').format(_logfile))
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args.add_argument('-v', '--verbose',
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dest = 'verbose',
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action = 'store_true',
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help = (
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'If specified, log messages will be printed to '
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'STDERR in addition to the other configured log '
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'system(s), and verbosity for printing '
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'functions is increased. '
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'\033[1mWARNING:\033[0m This may display VERY '
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'sensitive information such as passwords!'))
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help = ('If specified, log messages will be printed to STDERR in addition to the other '
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'configured log system(s), and verbosity for printing functions is increased. '
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'\033[1mWARNING:\033[0m This may display VERY sensitive information such as passwords!'))
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### ARGS FOR ALL OPERATIONS ###
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commonargs = argparse.ArgumentParser(add_help = False)
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commonargs.add_argument('-r', '--repo',
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dest = 'repo',
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default = 'all',
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help = (
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'The repository to perform the operation for. '
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'The default is \033[1mall\033[0m, a special '
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'value that specifies all known repositories. '
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'Can also accept a comma-separated list.'))
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help = ('The repository to perform the operation for. '
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'The default is \033[1mall\033[0m, a special value that specifies all known '
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'repositories. Can also accept a comma-separated list.'))
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fileargs = argparse.ArgumentParser(add_help = False)
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fileargs.add_argument('-a', '--archive',
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default = _date,
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dest = 'archive',
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help = (
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'The name of the archive/snapshot. '
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'Default: \033[1m{0}\033[0m (dynamic)').format(
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_date))
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help = ('The name of the archive/snapshot. '
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'Default: \033[1m{0}\033[0m (dynamic)').format(_date))
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remoteargs = argparse.ArgumentParser(add_help = False)
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remoteargs.add_argument('-d', '--dry-run',
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dest = 'dryrun',
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action = 'store_true',
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help = ('Act as if we are performing tasks, but '
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'none will actually be executed '
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help = ('Act as if we are performing tasks, but none will actually be executed '
|
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'(useful for testing logging)'))
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### OPERATIONS ###
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subparsers = args.add_subparsers(help = 'Operation to perform',
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@@ -617,72 +523,56 @@ def parseArgs():
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help = 'List available backups.',
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parents = [commonargs, remoteargs])
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listrepoargs = subparsers.add_parser('listrepos',
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help = ('List availabile/configured '
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'repositories.'),
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help = ('List availabile/configured repositories.'),
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parents = [commonargs])
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initargs = subparsers.add_parser('init',
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help = 'Initialise a repository.',
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parents = [commonargs, remoteargs])
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rstrargs = subparsers.add_parser('restore',
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help = ('Restore ("extract") an '
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'archive.'),
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help = ('Restore ("extract") an archive.'),
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parents = [commonargs,
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remoteargs,
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fileargs])
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cvrtargs = subparsers.add_parser('convert',
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help = ('Convert the legacy JSON format to the new XML format and quit'))
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### OPERATION-SPECIFIC OPTIONS ###
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# CREATE ("backup") #
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backupargs.add_argument('-s', '--stagedir',
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default = _stagedir,
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dest = 'stagedir',
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help = (
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'The directory used for staging '
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'temporary files, if necessary. '
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'Default: \033[1m{0}\033[0m').format(
|
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_stagedir))
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help = ('The directory used for staging temporary files, if necessary. '
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'Default: \033[1m{0}\033[0m').format(_stagedir))
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backupargs.add_argument('-m', '--mysqldir',
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default = _mysqldir,
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dest = 'mysqldir',
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help = (
|
||||
'The path to where MySQL dumps should go. '
|
||||
'Default: \033[1m{0}\033[0m').format(
|
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_mysqldir))
|
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help = ('The path to where MySQL dumps should go. '
|
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'Default: \033[1m{0}\033[0m').format(_mysqldir))
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# DISPLAY/OUTPUT ("list") #
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listargs.add_argument('-a', '--archive',
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dest = 'archive',
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default = False,
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help = 'If specified, will list the *contents* of '
|
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'the given archive name.')
|
||||
help = 'If specified, will list the *contents* of the given archive name.')
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listargs.add_argument('-l', '--limit',
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dest = 'numlimit',
|
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type = int,
|
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default = '5',
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||||
help = (
|
||||
'If specified, constrain the outout to this '
|
||||
'number of results each repo. '
|
||||
'Default is \033[1m5\033[0m, use 0 for '
|
||||
'unlimited. See '
|
||||
'\033[1m-H/--list-help\033[0m'))
|
||||
help = ('If specified, constrain the outout to this number of results each repo. '
|
||||
'Default is \033[1m5\033[0m, use 0 for unlimited. See \033[1m-H/--list-help\033[0m'))
|
||||
listargs.add_argument('-s', '--sort',
|
||||
dest = 'sortby',
|
||||
choices = ['newest', 'oldest'],
|
||||
default = 'oldest',
|
||||
help = (
|
||||
'The order to sort the results by. '
|
||||
'See \033[1m-H/--list-help\033[0m. '
|
||||
help = ('The order to sort the results by. See \033[1m-H/--list-help\033[0m. '
|
||||
'Default: \033[1moldest\033[0m'))
|
||||
listargs.add_argument('-x', '--invert',
|
||||
dest = 'invert',
|
||||
action = 'store_true',
|
||||
help = 'Invert the order of results. '
|
||||
'See \033[1m-H/--list-help\033[0m.')
|
||||
help = 'Invert the order of results. See \033[1m-H/--list-help\033[0m.')
|
||||
listargs.add_argument('-o', '--old',
|
||||
dest = 'old',
|
||||
action = 'store_true',
|
||||
help = (
|
||||
'Instead of grabbing the latest results, '
|
||||
'grab the earliest results. '
|
||||
'This differs from \033[1m-s/--sort\033[0m. '
|
||||
'See \033[1m-H/--list-help\033[0m.'))
|
||||
help = ('Instead of grabbing the latest results, grab the earliest results. This differs '
|
||||
'from \033[1m-s/--sort\033[0m. See \033[1m-H/--list-help\033[0m.'))
|
||||
listargs.add_argument('-H', '--list-help',
|
||||
dest = 'moarhelp',
|
||||
action = 'store_true',
|
||||
@@ -692,12 +582,91 @@ def parseArgs():
|
||||
rstrargs.add_argument('-t', '--target',
|
||||
required = True,
|
||||
dest = 'target_dir',
|
||||
help = ('The path to the directory where the '
|
||||
'restore should be dumped to. It is '
|
||||
'recommended to NOT restore to the same '
|
||||
'directory that the archive is taken from.'))
|
||||
help = ('The path to the directory where the restore should be dumped to. It is '
|
||||
'recommended to NOT restore to the same directory that the archive is taken from.'))
|
||||
return (args)
|
||||
|
||||
def convertConf(cfgfile):
|
||||
try:
|
||||
with open(cfgfile, 'r') as f:
|
||||
oldcfg = json.load(f)
|
||||
except json.decoder.JSONDecodeError:
|
||||
# It's not JSON. It's either already XML or invalid config.
|
||||
return(cfgfile)
|
||||
# Switched from JSON to XML, so we need to do some basic conversion.
|
||||
newfname = re.sub('(\.json)?$', '.xml', os.path.basename(cfgfile))
|
||||
newcfg = os.path.join(os.path.dirname(cfgfile),
|
||||
newfname)
|
||||
if os.path.exists(newcfg):
|
||||
# Do nothing. We don't want to overwrite an existing config
|
||||
# and we'll assume it's an already-done conversion.
|
||||
return(newcfg)
|
||||
print(('It appears that you are still using the legacy JSON format. '
|
||||
'We will attempt to convert it to the new XML format ({0}) but it may '
|
||||
'require modifications, especially if you are using any prep functions as those are not '
|
||||
'converted automatically. See sample.config.xml for an example of this.').format(newcfg))
|
||||
cfg = etree.Element('borg')
|
||||
# The old format only supported one server.
|
||||
server = etree.Element('server')
|
||||
server.attrib['target'] = oldcfg['config']['host']
|
||||
server.attrib['rsh'] = oldcfg['config']['ctx']
|
||||
server.attrib['user'] = oldcfg['config']['user']
|
||||
for r in oldcfg['repos']:
|
||||
repo = etree.Element('repo')
|
||||
repo.attrib['name'] = r
|
||||
repo.attrib['password'] = oldcfg['repos'][r]['password']
|
||||
for p in oldcfg['repos'][r]['paths']:
|
||||
path = etree.Element('path')
|
||||
server.append(repo)
|
||||
# Build the full XML spec.
|
||||
namespaces = {'borg': 'http://git.square-r00t.net/OpTools/tree/storage/backups/borg/',
|
||||
'xsi': 'http://www.w3.org/2001/XMLSchema-instance'}
|
||||
xsi = {('{http://www.w3.org/2001/'
|
||||
'XMLSchema-instance}schemaLocation'): ('http://git.square-r00t.net/OpTools/plain/'
|
||||
'storage/backups/borg/config.xsd')}
|
||||
if has_lxml:
|
||||
genname = 'LXML (http://lxml.de/)'
|
||||
root = etree.Element('borg', nsmap = namespaces, attrib = xsi)
|
||||
else:
|
||||
genname = 'Python stdlib "xml" module'
|
||||
for ns in namespaces.keys():
|
||||
etree.register_namespace(ns, namespaces[ns])
|
||||
root = etree.Element('borg')
|
||||
fromstr = cfgfile
|
||||
root.append(etree.Comment(
|
||||
('Generated by {0} on {1} from {2} via {3}').format(sys.argv[0],
|
||||
datetime.datetime.now(),
|
||||
fromstr,
|
||||
genname)))
|
||||
root.append(etree.Comment('THIS FILE CONTAINS SENSITIVE INFORMATION. SHARE/SCRUB WISELY.'))
|
||||
for x in cfg:
|
||||
root.append(x)
|
||||
# Write out the file to disk.
|
||||
if has_lxml:
|
||||
xml = etree.ElementTree(root)
|
||||
with open(newcfg, 'wb') as f:
|
||||
xml.write(f,
|
||||
xml_declaration = True,
|
||||
encoding = 'utf-8',
|
||||
pretty_print = True)
|
||||
else:
|
||||
import xml.dom.minidom
|
||||
xmlstr = etree.tostring(root, encoding = 'utf-8')
|
||||
# holy cats, the xml module sucks.
|
||||
nsstr = ''
|
||||
for ns in namespaces.keys():
|
||||
nsstr += ' xmlns:{0}="{1}"'.format(ns, namespaces[ns])
|
||||
for x in xsi.keys():
|
||||
xsiname = x.split('}')[1]
|
||||
nsstr += ' xsi:{0}="{1}"'.format(xsiname, xsi[x])
|
||||
outstr = xml.dom.minidom.parseString(xmlstr).toprettyxml(indent = ' ').splitlines()
|
||||
outstr[0] = '<?xml version=\'1.0\' encoding=\'utf-8\'?>'
|
||||
outstr[1] = '<borg{0}>'.format(nsstr)
|
||||
with open(newcfg, 'w') as f:
|
||||
f.write('\n'.join(outstr))
|
||||
# Return the new config's path.
|
||||
return(newcfg)
|
||||
|
||||
|
||||
def main():
|
||||
rawargs = parseArgs()
|
||||
@@ -709,6 +678,17 @@ def main():
|
||||
exit(0)
|
||||
if 'moarhelp' in args.keys() and args['moarhelp']:
|
||||
printMoarHelp()
|
||||
if args['oper'] == 'convert':
|
||||
convertConf(args['cfgfile'])
|
||||
return()
|
||||
else:
|
||||
try:
|
||||
with open(args['cfgfile'], 'r') as f:
|
||||
json.load(f)
|
||||
args['cfgfile'] = convertConf(args['cfgfile'])
|
||||
except json.decoder.JSONDecodeError:
|
||||
# It's not JSON. It's either already XML or invalid config.
|
||||
pass
|
||||
# The "Do stuff" part
|
||||
bak = Backup(args)
|
||||
if args['oper'] == 'list':
|
||||
@@ -721,7 +701,7 @@ def main():
|
||||
bak.createRepo()
|
||||
elif args['oper'] == 'restore':
|
||||
bak.restore()
|
||||
return ()
|
||||
return()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
|
||||
Reference in New Issue
Block a user