charm-ceph-mon/actions/remove-cache-tier.py

56 lines
1.9 KiB
Python
Executable File

#!/usr/bin/env python3
#
# Copyright 2016 Canonical Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from subprocess import CalledProcessError
import sys
sys.path.append('hooks')
from charmhelpers.contrib.storage.linux.ceph import Pool, pool_exists
from charmhelpers.core.hookenv import action_get, log, action_fail
__author__ = 'chris'
def delete_cache_tier():
backer_pool = action_get("backer-pool")
cache_pool = action_get("cache-pool")
# Pre flight checks
if not pool_exists('admin', backer_pool):
log("Backer pool {} must exist before calling this".format(
backer_pool))
action_fail("remove-cache-tier failed. Backer pool {} must exist "
"before calling this".format(backer_pool))
if not pool_exists('admin', cache_pool):
log("Cache pool {} must exist before calling this".format(
cache_pool))
action_fail("remove-cache-tier failed. Cache pool {} must exist "
"before calling this".format(cache_pool))
pool = Pool(service='admin', name=backer_pool)
try:
pool.remove_cache_tier(cache_pool=cache_pool)
except CalledProcessError as err:
log("Removing the cache tier failed with message: {}".format(str(err)))
action_fail("remove-cache-tier failed. Removing the cache tier failed "
"with message: {}".format(str(err)))
if __name__ == '__main__':
delete_cache_tier()