90 lines
3.6 KiB
Python
90 lines
3.6 KiB
Python
# Copyright (c) 2013 Bull.
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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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from novaclient import client
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from novaclient import exceptions as nova_exceptions
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from oslo.config import cfg
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from climate import context
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from climate.manager import exceptions as manager_exceptions
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class NovaInventory(object):
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def __init__(self):
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self.ctx = context.current()
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#TODO(sbauza): use catalog to find the url
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auth_url = "%s://%s:%s/v2.0" % (cfg.CONF.os_auth_protocol,
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cfg.CONF.os_auth_host,
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cfg.CONF.os_auth_port)
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self.nova = client.Client('2',
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username=cfg.CONF.climate_username,
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api_key=cfg.CONF.climate_password,
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auth_url=auth_url,
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project_id=cfg.CONF.climate_tenant_name)
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def get_host_details(self, host):
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"""Get Nova capabilities of a single host
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:param host: UUID or name of nova-compute host
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:return: Dict of capabilities or raise HostNotFound
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"""
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try:
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hypervisor = self.nova.hypervisors.get(host)
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except nova_exceptions.NotFound:
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try:
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hypervisors_list = self.nova.hypervisors.search(host)
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except nova_exceptions.NotFound:
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raise manager_exceptions.HostNotFound(host=host)
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if len(hypervisors_list) > 1:
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raise manager_exceptions.MultipleHostsFound(host)
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else:
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hypervisor_id = hypervisors_list[0].id
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# NOTE(sbauza): No need to catch the exception as we're sure
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# that the hypervisor exists
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hypervisor = self.nova.hypervisors.get(hypervisor_id)
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try:
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return {'id': hypervisor.id,
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'hypervisor_hostname': hypervisor.hypervisor_hostname,
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'vcpus': hypervisor.vcpus,
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'cpu_info': hypervisor.cpu_info,
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'hypervisor_type': hypervisor.hypervisor_type,
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'hypervisor_version': hypervisor.hypervisor_version,
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'memory_mb': hypervisor.memory_mb,
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'local_gb': hypervisor.local_gb}
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except AttributeError:
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raise manager_exceptions.InvalidHost(host=host)
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def get_servers_per_host(self, host):
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"""List all servers of a nova-compute host
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:param host: Name (not UUID) of nova-compute host
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:return: Dict of servers or None
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"""
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try:
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hypervisors_list = self.nova.hypervisors.search(host, servers=True)
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except nova_exceptions.NotFound:
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raise manager_exceptions.HostNotFound(host=host)
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if len(hypervisors_list) > 1:
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raise manager_exceptions.MultipleHostsFound(host)
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else:
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try:
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return hypervisors_list[0].servers
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except AttributeError:
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# NOTE(sbauza): nova.hypervisors.search(servers=True) returns
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# a list of hosts without 'servers' attribute if no servers
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# are running on that host
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return None
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