bootstrap-vz/base/main.py
2014-01-06 22:58:21 +01:00

54 lines
1.7 KiB
Python

import logging
log = logging.getLogger(__name__)
def main():
import log
args = get_args()
logfile = log.get_logfile_path(args.manifest)
log.setup_logger(logfile=logfile, debug=args.debug)
run(args)
def get_args():
from argparse import ArgumentParser
parser = ArgumentParser(description='Bootstrap Debian for the cloud.')
parser.add_argument('--debug', action='store_true',
help='Print debugging information')
parser.add_argument('--pause-on-error', action='store_true',
help='Pause on error, before rollback')
parser.add_argument('--dry-run', action='store_true',
help='Dont\'t actually run the tasks')
parser.add_argument('manifest', help='Manifest file to use for bootstrapping', metavar='MANIFEST')
return parser.parse_args()
def run(args):
from manifest import Manifest
manifest = Manifest(args.manifest)
from tasklist import TaskList
tasklist = TaskList()
tasklist.load('resolve_tasks', manifest)
from bootstrapinfo import BootstrapInformation
bootstrap_info = BootstrapInformation(manifest=manifest, debug=args.debug)
try:
tasklist.run(info=bootstrap_info, dry_run=args.dry_run)
log.info('Successfully completed bootstrapping')
except (Exception, KeyboardInterrupt) as e:
log.exception(e)
if args.pause_on_error:
raw_input("Press Enter to commence rollback")
log.error('Rolling back')
rollback_tasklist = TaskList()
def counter_task(task, counter):
if task in tasklist.tasks_completed and counter not in tasklist.tasks_completed:
rollback_tasklist.tasks.add(counter)
rollback_tasklist.load('resolve_rollback_tasks', manifest, counter_task)
rollback_tasklist.run(info=bootstrap_info, dry_run=args.dry_run)
log.info('Successfully completed rollback')