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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 six
LEVEL = ["host", "rack", "cluster"]
FLAVOR_TYPES = ["gv", "nv", "nd", "ns", "ss"]
class Group(object):
"""Container to keep requested valet groups.
TODO(Gueyoung): create parent class to make common functions
"""
def __init__(self, _id):
"""Define group info and parameters."""
# ID consists of
# datacenter_id + [service_instance_id] + [vnf_instance_id] + rule_name
self.vid = _id
# Type is either affinity, diversity, quorum_diversity, or exclusivity
self.group_type = None
self.factory = None
# Level is host or rack
self.level = None
# To build containment tree
self.surgroup = None # parent 'affinity' object
self.subgroups = {} # child affinity group (or server) objects
# Group objects of this container
self.diversity_groups = {}
self.quorum_diversity_groups = {}
self.exclusivity_groups = {}
self.availability_zone_list = []
self.extra_specs_list = []
self.vCPUs = 0
self.mem = 0 # MB
self.local_volume_size = 0 # GB
self.vCPU_weight = -1
self.mem_weight = -1
self.local_volume_weight = -1
# To record which servers (e.g., VMs) in given request are assigned
# to this group.
self.server_list = []
self.sort_base = -1
def get_exclusivities(self, _level):
"""Return exclusivity group requested with a level (host or rack).
Note: each affinity group must have a single exclusivity group of the level.
"""
exclusivities = {}
for exk, group in self.exclusivity_groups.items():
if group.level == _level:
exclusivities[exk] = group
return exclusivities
def need_numa_alignment(self):
"""Check if this server requires NUMA alignment."""
if len(self.extra_specs_list) > 0:
for es in self.extra_specs_list:
for key, req in six.iteritems(es):
if key == "hw:numa_nodes" and req == 1:
return True
return False
def is_parent_affinity(self, _vk):
"""Check recursively if _vk is located in the group."""
exist = False
for sgk, sg in self.subgroups.items():
if sgk == _vk:
exist = True
break
if isinstance(sg, Group):
if sg.is_parent_affinity(_vk):
exist = True
break
return exist
def get_servers(self, _servers):
"""Get all child servers."""
for _, sg in self.subgroups.items():
if isinstance(sg, Group):
sg.get_servers(_servers)
else:
if sg not in _servers:
_servers.append(sg)
def get_flavor_types(self):
flavor_type_list = []
for extra_specs in self.extra_specs_list:
for k, v in extra_specs.items():
k_elements = k.split(':')
if len(k_elements) > 1:
if k_elements[0] == "aggregate_instance_extra_specs":
if k_elements[1].lower() in FLAVOR_TYPES:
if v == "true":
flavor_type_list.append(k_elements[1])
return flavor_type_list
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