134 lines
4.7 KiB
Python
134 lines
4.7 KiB
Python
# Copyright 2012, Piston Cloud Computing, Inc.
|
|
# Copyright 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.
|
|
|
|
|
|
import netaddr
|
|
import six
|
|
|
|
from nova.compute import api as compute
|
|
from nova.openstack.common.gettextutils import _
|
|
from nova.openstack.common import log as logging
|
|
|
|
from gantt.scheduler import filters
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
class AffinityFilter(filters.BaseHostFilter):
|
|
def __init__(self):
|
|
self.compute_api = compute.API()
|
|
|
|
|
|
class DifferentHostFilter(AffinityFilter):
|
|
'''Schedule the instance on a different host from a set of instances.'''
|
|
|
|
# The hosts the instances are running on doesn't change within a request
|
|
run_filter_once_per_request = True
|
|
|
|
def host_passes(self, host_state, filter_properties):
|
|
context = filter_properties['context']
|
|
scheduler_hints = filter_properties.get('scheduler_hints') or {}
|
|
|
|
affinity_uuids = scheduler_hints.get('different_host', [])
|
|
if isinstance(affinity_uuids, six.string_types):
|
|
affinity_uuids = [affinity_uuids]
|
|
if affinity_uuids:
|
|
return not self.compute_api.get_all(context,
|
|
{'host': host_state.host,
|
|
'uuid': affinity_uuids,
|
|
'deleted': False})
|
|
# With no different_host key
|
|
return True
|
|
|
|
|
|
class SameHostFilter(AffinityFilter):
|
|
'''Schedule the instance on the same host as another instance in a set of
|
|
of instances.
|
|
'''
|
|
|
|
# The hosts the instances are running on doesn't change within a request
|
|
run_filter_once_per_request = True
|
|
|
|
def host_passes(self, host_state, filter_properties):
|
|
context = filter_properties['context']
|
|
scheduler_hints = filter_properties.get('scheduler_hints') or {}
|
|
|
|
affinity_uuids = scheduler_hints.get('same_host', [])
|
|
if isinstance(affinity_uuids, six.string_types):
|
|
affinity_uuids = [affinity_uuids]
|
|
if affinity_uuids:
|
|
return self.compute_api.get_all(context, {'host': host_state.host,
|
|
'uuid': affinity_uuids,
|
|
'deleted': False})
|
|
# With no same_host key
|
|
return True
|
|
|
|
|
|
class SimpleCIDRAffinityFilter(AffinityFilter):
|
|
'''Schedule the instance on a host with a particular cidr
|
|
'''
|
|
|
|
# The address of a host doesn't change within a request
|
|
run_filter_once_per_request = True
|
|
|
|
def host_passes(self, host_state, filter_properties):
|
|
scheduler_hints = filter_properties.get('scheduler_hints') or {}
|
|
|
|
affinity_cidr = scheduler_hints.get('cidr', '/24')
|
|
affinity_host_addr = scheduler_hints.get('build_near_host_ip')
|
|
host_ip = host_state.host_ip
|
|
if affinity_host_addr:
|
|
affinity_net = netaddr.IPNetwork(str.join('', (affinity_host_addr,
|
|
affinity_cidr)))
|
|
|
|
return netaddr.IPAddress(host_ip) in affinity_net
|
|
|
|
# We don't have an affinity host address.
|
|
return True
|
|
|
|
|
|
class GroupAntiAffinityFilter(AffinityFilter):
|
|
"""Schedule the instance on a different host from a set of group
|
|
hosts.
|
|
"""
|
|
|
|
def host_passes(self, host_state, filter_properties):
|
|
group_hosts = filter_properties.get('group_hosts') or []
|
|
LOG.debug(_("Group anti affinity: check if %(host)s not "
|
|
"in %(configured)s"), {'host': host_state.host,
|
|
'configured': group_hosts})
|
|
if group_hosts:
|
|
return not host_state.host in group_hosts
|
|
|
|
# No groups configured
|
|
return True
|
|
|
|
|
|
class GroupAffinityFilter(AffinityFilter):
|
|
"""Schedule the instance on to host from a set of group hosts.
|
|
"""
|
|
|
|
def host_passes(self, host_state, filter_properties):
|
|
group_hosts = filter_properties.get('group_hosts', [])
|
|
LOG.debug(_("Group affinity: check if %(host)s in "
|
|
"%(configured)s"), {'host': host_state.host,
|
|
'configured': group_hosts})
|
|
if group_hosts:
|
|
return host_state.host in group_hosts
|
|
|
|
# No groups configured
|
|
return True
|