681536c8c7
Fetched information of total disk capacity from nova and added a new resource 'disk_capacity' to NovaClusterModelCollector cluster. Also a new resource type 'disk_capacity' was added to ResourceType. https://bugs.launchpad.net/watcher/+bug/1553124 Change-Id: I85750f25c6d2693432da8e5e3a3d0861320f4787 Closes-Bug: #1553124
82 lines
3.2 KiB
Python
82 lines
3.2 KiB
Python
# -*- encoding: utf-8 -*-
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# Copyright (c) 2015 b<>com
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#
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# Authors: Jean-Emile DARTOIS <jean-emile.dartois@b-com.com>
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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from oslo_log import log
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from watcher.decision_engine.model import hypervisor as obj_hypervisor
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from watcher.decision_engine.model import model_root
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from watcher.decision_engine.model import resource
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from watcher.decision_engine.model import vm as obj_vm
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from watcher.metrics_engine.cluster_model_collector import api
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LOG = log.getLogger(__name__)
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class NovaClusterModelCollector(api.BaseClusterModelCollector):
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def __init__(self, wrapper):
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super(NovaClusterModelCollector, self).__init__()
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self.wrapper = wrapper
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def get_latest_cluster_data_model(self):
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LOG.debug("Getting latest cluster data model")
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cluster = model_root.ModelRoot()
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mem = resource.Resource(resource.ResourceType.memory)
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num_cores = resource.Resource(resource.ResourceType.cpu_cores)
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disk = resource.Resource(resource.ResourceType.disk)
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disk_capacity = resource.Resource(resource.ResourceType.disk_capacity)
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cluster.create_resource(mem)
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cluster.create_resource(num_cores)
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cluster.create_resource(disk)
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cluster.create_resource(disk_capacity)
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flavor_cache = {}
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hypervisors = self.wrapper.get_hypervisors_list()
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for h in hypervisors:
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service = self.wrapper.nova.services.find(id=h.service['id'])
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# create hypervisor in cluster_model_collector
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hypervisor = obj_hypervisor.Hypervisor()
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hypervisor.uuid = service.host
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hypervisor.hostname = h.hypervisor_hostname
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# set capacity
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mem.set_capacity(hypervisor, h.memory_mb)
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disk.set_capacity(hypervisor, h.free_disk_gb)
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disk_capacity.set_capacity(hypervisor, h.local_gb)
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num_cores.set_capacity(hypervisor, h.vcpus)
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hypervisor.state = h.state
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hypervisor.status = h.status
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cluster.add_hypervisor(hypervisor)
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vms = self.wrapper.get_vms_by_hypervisor(str(service.host))
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for v in vms:
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# create VM in cluster_model_collector
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vm = obj_vm.VM()
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vm.uuid = v.id
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# nova/nova/compute/vm_states.py
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vm.state = getattr(v, 'OS-EXT-STS:vm_state')
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# set capacity
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self.wrapper.get_flavor_instance(v, flavor_cache)
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mem.set_capacity(vm, v.flavor['ram'])
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disk.set_capacity(vm, v.flavor['disk'])
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num_cores.set_capacity(vm, v.flavor['vcpus'])
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cluster.get_mapping().map(hypervisor, vm)
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cluster.add_vm(vm)
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return cluster
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