53 lines
1.8 KiB
Python
53 lines
1.8 KiB
Python
# Copyright (c) 2012 OpenStack Foundation
|
|
# 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.
|
|
|
|
from oslo_log import log as logging
|
|
|
|
from nova.scheduler import filters
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
class RetryFilter(filters.BaseHostFilter):
|
|
"""Filter out nodes that have already been attempted for scheduling
|
|
purposes
|
|
"""
|
|
|
|
# NOTE(danms): This does not affect _where_ an instance lands, so not
|
|
# related to rebuild.
|
|
RUN_ON_REBUILD = False
|
|
|
|
def host_passes(self, host_state, spec_obj):
|
|
"""Skip nodes that have already been attempted."""
|
|
retry = spec_obj.retry
|
|
if not retry:
|
|
return True
|
|
|
|
# TODO(sbauza): Once the HostState is actually a ComputeNode, we could
|
|
# easily get this one...
|
|
host = [host_state.host, host_state.nodename]
|
|
# TODO(sbauza)... and we wouldn't need to primitive the hosts into
|
|
# lists
|
|
hosts = [[cn.host, cn.hypervisor_hostname] for cn in retry.hosts]
|
|
|
|
passes = host not in hosts
|
|
|
|
if not passes:
|
|
LOG.info("Host %(host)s fails. Previously tried hosts: "
|
|
"%(hosts)s", {'host': host, 'hosts': hosts})
|
|
|
|
# Host passes if it's not in the list of previously attempted hosts:
|
|
return passes
|