cloud-init/cloudinit/config/cc_migrator.py
Scott Moser 01be0255f3 make migrator walk the "cloud" path also
the migrator was not renaming items in the "cloud" semaphore path.
Those were items that would run once only.

Now we just check both ipath('sem') and cpath('sem')
2012-11-13 15:25:57 -05:00

86 lines
3.0 KiB
Python

# vi: ts=4 expandtab
#
# Copyright (C) 2012 Yahoo! Inc.
#
# Author: Joshua Harlow <harlowja@yahoo-inc.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3, as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
import shutil
from cloudinit import helpers
from cloudinit import util
from cloudinit.settings import PER_ALWAYS
frequency = PER_ALWAYS
def _migrate_canon_sems(cloud):
paths = (cloud.paths.get_ipath('sem'), cloud.paths.get_cpath('sem'))
am_adjusted = 0
for sem_path in paths:
if not sem_path or not os.path.exists(sem_path):
continue
for p in os.listdir(sem_path):
full_path = os.path.join(sem_path, p)
if os.path.isfile(full_path):
(name, ext) = os.path.splitext(p)
canon_name = helpers.canon_sem_name(name)
if canon_name != name:
new_path = os.path.join(sem_path, canon_name + ext)
shutil.move(full_path, new_path)
am_adjusted += 1
return am_adjusted
def _migrate_legacy_sems(cloud, log):
legacy_adjust = {
'apt-update-upgrade': [
'apt-configure',
'package-update-upgrade-install',
],
}
paths = (cloud.paths.get_ipath('sem'), cloud.paths.get_cpath('sem'))
for sem_path in paths:
if not sem_path or not os.path.exists(sem_path):
continue
sem_helper = helpers.FileSemaphores(sem_path)
for (mod_name, migrate_to) in legacy_adjust.items():
possibles = [mod_name, helpers.canon_sem_name(mod_name)]
old_exists = []
for p in os.listdir(sem_path):
(name, _ext) = os.path.splitext(p)
if name in possibles and os.path.isfile(p):
old_exists.append(p)
for p in old_exists:
util.del_file(os.path.join(sem_path, p))
(_name, freq) = os.path.splitext(p)
for m in migrate_to:
log.debug("Migrating %s => %s with the same frequency",
p, m)
with sem_helper.lock(m, freq):
pass
def handle(name, cfg, cloud, log, _args):
do_migrate = util.get_cfg_option_str(cfg, "migrate", True)
if not util.translate_bool(do_migrate):
log.debug("Skipping module named %s, migration disabled", name)
return
sems_moved = _migrate_canon_sems(cloud)
log.debug("Migrated %s semaphore files to there canonicalized names",
sems_moved)
_migrate_legacy_sems(cloud, log)