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# Copyright 2014 Huawei Technologies Co. 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.
"""Module to patch an existing cluster
"""
import logging
import simplejson as json
from compass.actions import util
from compass.db.api import cluster as cluster_db
from compass.db.api import user as user_db
from compass.deployment.deploy_manager import Patcher
from compass.deployment.utils import constants as const
def patch(cluster_id, username=None):
"""Patch cluster.
:param cluster_id: id of the cluster
:type cluster_id: int
.. note::
The function should be called out of database session.
"""
with util.lock('serialized_action', timeout=1000) as lock:
if not lock:
raise Exception('failed to acquire lock to deploy')
user = user_db.get_user_object(username)
cluster_hosts = cluster_db.list_cluster_hosts(cluster_id, user)
hosts_id_list = [host['id'] for host in cluster_hosts]
cluster_info = util.ActionHelper.get_cluster_info(cluster_id, user)
adapter_id = cluster_info[const.ADAPTER_ID]
adapter_info = util.ActionHelper.get_adapter_info(
adapter_id, cluster_id, user)
hosts_info = util.ActionHelper.get_hosts_info(
cluster_id, hosts_id_list, user)
patch_successful = True
try:
patcher = Patcher(
adapter_info, cluster_info, hosts_info, cluster_hosts)
patched_config = patcher.patch()
except Exception as error:
logging.exception(error)
patch_successful = False
if patch_successful:
clean_payload = '{"patched_roles": []}'
clean_payload = json.loads(clean_payload)
for cluster_host in cluster_hosts:
cluster_db.update_cluster_host(
cluster_id, cluster_host['id'], user, **clean_payload)
logging.info(
"cleaning up patched roles for host id: %s",
cluster_host['id']
)
logging.info("Patch successful: %s", patched_config)
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