120 lines
3.7 KiB
Python
120 lines
3.7 KiB
Python
# -*- encoding: utf-8 -*-
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#
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# Author: John Tran <jhtran@att.com>
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import functools
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import novaclient
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from novaclient.v1_1 import client as nova_client
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from oslo.config import cfg
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from ceilometer.openstack.common import log
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cfg.CONF.import_group('service_credentials', 'ceilometer.service')
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LOG = log.getLogger(__name__)
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def logged(func):
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@functools.wraps(func)
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def with_logging(*args, **kwargs):
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try:
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return func(*args, **kwargs)
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except Exception as e:
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LOG.exception(e)
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raise
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return with_logging
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class Client(object):
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"""A client which gets information via python-novaclient."""
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def __init__(self):
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"""Initialize a nova client object."""
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conf = cfg.CONF.service_credentials
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tenant = conf.os_tenant_id or conf.os_tenant_name
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self.nova_client = nova_client.Client(
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username=conf.os_username,
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api_key=conf.os_password,
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project_id=tenant,
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auth_url=conf.os_auth_url,
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region_name=conf.os_region_name,
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endpoint_type=conf.os_endpoint_type,
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cacert=conf.os_cacert,
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no_cache=True)
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def _with_flavor_and_image(self, instances):
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for instance in instances:
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self._with_flavor(instance)
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self._with_image(instance)
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return instances
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def _with_flavor(self, instance):
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fid = instance.flavor['id']
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try:
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flavor = self.nova_client.flavors.get(fid)
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except novaclient.exceptions.NotFound:
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flavor = None
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attr_defaults = [('name', 'unknown-id-%s' % fid),
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('vcpus', 0), ('ram', 0), ('disk', 0),
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('ephemeral', 0)]
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for attr, default in attr_defaults:
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if not flavor:
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instance.flavor[attr] = default
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continue
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instance.flavor[attr] = getattr(flavor, attr, default)
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def _with_image(self, instance):
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try:
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iid = instance.image['id']
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except TypeError:
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instance.image = None
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instance.kernel_id = None
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instance.ramdisk_id = None
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return
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try:
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image = self.nova_client.images.get(iid)
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except novaclient.exceptions.NotFound:
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instance.image['name'] = 'unknown-id-%s' % iid
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instance.kernel_id = None
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instance.ramdisk_id = None
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return
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instance.image['name'] = getattr(image, 'name')
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image_metadata = getattr(image, 'metadata', None)
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for attr in ['kernel_id', 'ramdisk_id']:
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ameta = image_metadata.get(attr, None) if image_metadata else None
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setattr(instance, attr, ameta)
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@logged
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def instance_get_all_by_host(self, hostname):
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"""Returns list of instances on particular host."""
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search_opts = {'host': hostname, 'all_tenants': True}
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return self._with_flavor_and_image(self.nova_client.servers.list(
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detailed=True,
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search_opts=search_opts))
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@logged
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def floating_ip_get_all(self):
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"""Returns all floating ips."""
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return self.nova_client.floating_ips.list()
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