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#
# -------------------------------------------------------------------------
# Copyright (c) 2019 AT&T Intellectual Property
#
# 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 copy
from valet.engine.app_manager.server import Server
from valet.engine.search.filters.aggregate_instance_filter import AggregateInstanceExtraSpecsFilter
from valet.engine.search.filters.cpu_filter import CPUFilter
from valet.engine.search.filters.disk_filter import DiskFilter
from valet.engine.search.filters.mem_filter import MemFilter
from valet.engine.search.filters.numa_filter import NUMAFilter
class DynamicAggregateFilter(object):
def __init__(self):
self.name = "dynamic-aggregate"
self.avail_hosts = {}
self.avail_groups = {}
self.aggr_filter = AggregateInstanceExtraSpecsFilter()
self.cpu_filter = CPUFilter()
self.mem_filter = MemFilter()
self.disk_filter = DiskFilter()
self.numa_filter = NUMAFilter()
self.status = None
def init_condition(self):
self.avail_hosts = {}
self.avail_groups = {}
self.status = None
def check_pre_condition(self, _level, _v, _avail_hosts, _avail_groups):
if _level == "host" and isinstance(_v, Server):
self.avail_hosts = _avail_hosts
self.avail_groups = _avail_groups
return True
else:
return False
def filter_candidates(self, _level, _v, _candidate_list):
specified_candidate_list = [] # candidates having specific host type
unspecified_candidate_list = [] # candidates not having specific host type
for c in _candidate_list:
if len(c.candidate_host_types) == 0:
specified_candidate_list.append(c)
else:
unspecified_candidate_list.append(c)
# Try to use existing hosts that have specific host type
if len(specified_candidate_list) > 0:
return specified_candidate_list
# Take just one candidate
candidate = unspecified_candidate_list[0]
# Get the host-aggregate of _v
flavor_type_list = _v.get_flavor_types()
if len(flavor_type_list) > 1:
self.status = "have more than one flavor type"
return []
ha = self.avail_groups[flavor_type_list[0]]
# Add the host-aggregate into host and rack memberships.
# Adjust host with avail cpus, mem, disk, and numa
candidate.adjust_avail_resources(ha)
# Change all others in the same rack.
for hrk, hr in self.avail_hosts.items():
if hrk != candidate.host_name:
if hr.rack_name == candidate.rack_name:
hr.adjust_avail_rack_resources(ha,
candidate.rack_avail_vCPUs,
candidate.rack_avail_mem,
candidate.rack_avail_local_disk)
# Once the host type (ha) is determined, remove candidate_host_types
candidate.old_candidate_host_types = copy.deepcopy(candidate.candidate_host_types)
candidate.candidate_host_types.clear()
# Filter against host-aggregate, cpu, mem, disk, numa
self.aggr_filter.init_condition()
if self.aggr_filter.check_pre_condition(_level, _v, self.avail_hosts, self.avail_groups):
if not self.aggr_filter._check_candidate(_level, _v, candidate):
self.status = "host-aggregate violation"
self.cpu_filter.init_condition()
if not self.cpu_filter._check_candidate(_level, _v, candidate):
self.status = "cpu violation"
self.mem_filter.init_condition()
if not self.mem_filter._check_candidate(_level, _v, candidate):
self.status = "mem violation"
self.disk_filter.init_condition()
if not self.disk_filter._check_candidate(_level, _v, candidate):
self.status = "disk violation"
self.numa_filter.init_condition()
if self.numa_filter.check_pre_condition(_level, _v, self.avail_hosts, self.avail_groups):
if not self.numa_filter._check_candidate(_level, _v, candidate):
self.status = "numa violation"
if self.status is None:
# Candidate not filtered.
return [candidate]
else:
# Rollback
candidate.rollback_avail_resources(ha)
candidate.candidate_host_types = copy.deepcopy(candidate.old_candidate_host_types)
candidate.old_candidate_host_types.clear()
for hrk, hr in self.avail_hosts.items():
if hrk != candidate.host_name:
if hr.rack_name == candidate.rack_name:
hr.rollback_avail_rack_resources(ha,
candidate.rack_avail_vCPUs,
candidate.rack_avail_mem,
candidate.rack_avail_local_disk)
return []
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