6c3520ac5b
The i18n team has decided not to translate the logs because it seems like it not very useful; operators prefer to have them in English so that they can search for those strings on the internet. Partially fix on nova/virt other paths will be fixed on next commits Change-Id: Ie7821aa4a5147cdb0616741bd1a1b1fc22080440
94 lines
3.2 KiB
Python
94 lines
3.2 KiB
Python
# Copyright 2015 NTT corp.
|
|
# All Rights Reserved.
|
|
# 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.
|
|
|
|
|
|
import collections
|
|
import errno
|
|
import os
|
|
import signal
|
|
|
|
from oslo_log import log as logging
|
|
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
class InstanceJobTracker(object):
|
|
def __init__(self):
|
|
self.jobs = collections.defaultdict(list)
|
|
|
|
def add_job(self, instance, pid):
|
|
"""Appends process_id of instance to cache.
|
|
|
|
This method will store the pid of a process in cache as
|
|
a key: value pair which will be used to kill the process if it
|
|
is running while deleting the instance. Instance uuid is used as
|
|
a key in the cache and pid will be the value.
|
|
|
|
:param instance: Object of instance
|
|
:param pid: Id of the process
|
|
"""
|
|
self.jobs[instance.uuid].append(pid)
|
|
|
|
def remove_job(self, instance, pid):
|
|
"""Removes pid of process from cache.
|
|
|
|
This method will remove the pid of a process from the cache.
|
|
|
|
:param instance: Object of instance
|
|
:param pid: Id of the process
|
|
"""
|
|
uuid = instance.uuid
|
|
if uuid in self.jobs and pid in self.jobs[uuid]:
|
|
self.jobs[uuid].remove(pid)
|
|
|
|
# remove instance.uuid if no pid's remaining
|
|
if not self.jobs[uuid]:
|
|
self.jobs.pop(uuid, None)
|
|
|
|
def terminate_jobs(self, instance):
|
|
"""Kills the running processes for given instance.
|
|
|
|
This method is used to kill all running processes of the instance if
|
|
it is deleted in between.
|
|
|
|
:param instance: Object of instance
|
|
"""
|
|
pids_to_remove = list(self.jobs.get(instance.uuid, []))
|
|
for pid in pids_to_remove:
|
|
try:
|
|
# Try to kill the process
|
|
os.kill(pid, signal.SIGKILL)
|
|
except OSError as exc:
|
|
if exc.errno != errno.ESRCH:
|
|
LOG.error('Failed to kill process %(pid)s '
|
|
'due to %(reason)s, while deleting the '
|
|
'instance.', {'pid': pid, 'reason': exc},
|
|
instance=instance)
|
|
|
|
try:
|
|
# Check if the process is still alive.
|
|
os.kill(pid, 0)
|
|
except OSError as exc:
|
|
if exc.errno != errno.ESRCH:
|
|
LOG.error('Unexpected error while checking process '
|
|
'%(pid)s.', {'pid': pid}, instance=instance)
|
|
else:
|
|
# The process is still around
|
|
LOG.warning("Failed to kill a long running process "
|
|
"%(pid)s related to the instance when "
|
|
"deleting it.", {'pid': pid}, instance=instance)
|
|
|
|
self.remove_job(instance, pid)
|