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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.
#
# -------------------------------------------------------------------------
#
from valet.engine.resource_manager.resources.numa import NUMA
class GroupResource(object):
"""Container for all resource group includes
affinity, diversity, quorum-diversity, exclusivity, host-aggregate and availability.
"""
def __init__(self):
self.name = None
self.group_type = "aggr"
self.factory = "nova"
self.level = "host"
self.metadata = {}
self.original_num_of_placed_servers = 0
self.num_of_placed_servers = 0
# key = host (host or rack), value = num_of_placed_servers
self.num_of_placed_servers_of_host = {}
class HostResource(object):
"""Container for hosting resource (host, rack)."""
def __init__(self):
# Host info
self.host_name = None
self.host_memberships = {} # all mapped groups to host
self.host_avail_vCPUs = 0 # remaining vCPUs after overcommit
self.host_avail_mem = 0 # remaining mem cap after
self.host_avail_local_disk = 0 # remaining local disk cap after overcommit
self.NUMA = None
self.host_num_of_placed_servers = 0 # the number of vms currently placed in this host
# If the host type is not determined yet,
# provide possible host types.
self.candidate_host_types = {}
self.old_candidate_host_types = {} # For rollback
# To track newly added host types.
self.new_host_aggregate_list = []
# Rack info
self.rack_name = None # where this host is located
self.rack_memberships = {}
self.rack_avail_vCPUs = 0
self.rack_avail_mem = 0
self.rack_avail_local_disk = 0
self.rack_num_of_placed_servers = 0
# To track newly added host types.
self.new_rack_aggregate_list = []
self.level = None # level of placement
self.sort_base = 0 # order to place
def get_host_type(self, _ha, _host_types):
"""Take host-aggregate group and
return default host type of the host-aggregate.
"""
host_type = None
if _host_types is None:
return host_type
host_type_list = _host_types[_ha.name]
for ht in host_type_list:
if "default" in ht.keys():
host_type = ht
break
return host_type
def adjust_avail_resources(self, _ha):
"""Take host-aggregate group and
add it to host/rack memberships and
adjust the amount of available resources based on
the corresponding host type.
"""
if _ha.name not in self.host_memberships.keys():
self.host_memberships[_ha.name] = _ha
self.new_host_aggregate_list.append(_ha.name)
if _ha.name not in self.rack_memberships.keys():
self.rack_memberships[_ha.name] = _ha
self.new_rack_aggregate_list.append(_ha.name)
host_type = self.get_host_type(_ha, self.candidate_host_types)
self.host_avail_vCPUs = host_type["avail_vCPUs"]
self.host_avail_mem = host_type["avail_mem"]
self.host_avail_local_disk = host_type["avail_local_disk"]
self.NUMA = NUMA(numa=host_type["NUMA"])
if self.candidate_host_types is not None:
for htk, htl in self.candidate_host_types.items():
if htk == "mockup":
self.rack_avail_vCPUs -= htl[0]["avail_vCPUs"]
self.rack_avail_mem -= htl[0]["avail_mem"]
self.rack_avail_local_disk -= htl[0]["avail_local_disk"]
self.rack_avail_vCPUs += self.host_avail_vCPUs
self.rack_avail_mem += self.host_avail_mem
self.rack_avail_local_disk += self.host_avail_local_disk
break
def adjust_avail_rack_resources(self, _ha, _cpus, _mem, _disk):
"""Take host-aggregate group and the amount of available resources
add the group into rack membership and
adjust the amount of available rack resources.
"""
if _ha.name not in self.rack_memberships.keys():
self.rack_memberships[_ha.name] = _ha
self.new_rack_aggregate_list.append(_ha.name)
self.rack_avail_vCPUs = _cpus
self.rack_avail_mem = _mem
self.rack_avail_local_disk = _disk
def rollback_avail_resources(self, _ha):
if _ha.name in self.new_host_aggregate_list:
del self.host_memberships[_ha.name]
self.new_host_aggregate_list.remove(_ha.name)
if _ha.name in self.new_rack_aggregate_list:
del self.rack_memberships[_ha.name]
self.new_rack_aggregate_list.remove(_ha.name)
host_type = self.get_host_type(_ha, self.old_candidate_host_types)
if self.old_candidate_host_types is not None:
for htk, htl in self.old_candidate_host_types.items():
if htk == "mockup":
self.host_avail_vCPUs = htl[0]["avail_vCPUs"]
self.host_avail_mem = htl[0]["avail_mem"]
self.host_avail_local_disk = htl[0]["avail_local_disk"]
self.NUMA = NUMA(numa=htl[0]["NUMA"])
self.rack_avail_vCPUs -= host_type["avail_vCPUs"]
self.rack_avail_mem -= host_type["avail_mem"]
self.rack_avail_local_disk -= host_type["avail_local_disk"]
self.rack_avail_vCPUs += self.host_avail_vCPUs
self.rack_avail_mem += self.host_avail_mem
self.rack_avail_local_disk += self.host_avail_local_disk
break
def rollback_avail_rack_resources(self, _ha, _cpus, _mem, _disk):
if _ha.name in self.new_rack_aggregate_list:
del self.rack_memberships[_ha.name]
self.new_rack_aggregate_list.remove(_ha.name)
self.rack_avail_vCPUs = _cpus
self.rack_avail_mem = _mem
self.rack_avail_local_disk = _disk
def get_resource_name(self, _level):
name = "unknown"
if _level == "rack":
name = self.rack_name
elif _level == "host":
name = self.host_name
return name
def get_vcpus(self, _level):
avail_vcpus = 0
if _level == "rack":
avail_vcpus = self.rack_avail_vCPUs
elif _level == "host":
avail_vcpus = self.host_avail_vCPUs
return avail_vcpus
def get_mem(self, _level):
avail_mem = 0
if _level == "rack":
avail_mem = self.rack_avail_mem
elif _level == "host":
avail_mem = self.host_avail_mem
return avail_mem
def get_local_disk(self, _level):
avail_local_disk = 0
if _level == "rack":
avail_local_disk = self.rack_avail_local_disk
elif _level == "host":
avail_local_disk = self.host_avail_local_disk
return avail_local_disk
def get_memberships(self, _level):
memberships = None
if _level == "rack":
memberships = self.rack_memberships
elif _level == "host":
memberships = self.host_memberships
return memberships
def get_all_memberships(self, _level):
memberships = {}
if _level == "rack":
for mk, m in self.rack_memberships.items():
memberships[mk] = m
for mk, m in self.host_memberships.items():
memberships[mk] = m
elif _level == "host":
for mk, m in self.host_memberships.items():
memberships[mk] = m
return memberships
def get_num_of_placed_servers(self, _level):
num_of_servers = 0
if _level == "rack":
num_of_servers = self.rack_num_of_placed_servers
elif _level == "host":
num_of_servers = self.host_num_of_placed_servers
return num_of_servers
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