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#
# Author: John Tran <jhtran@att.com>
#
# 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 functools
import novaclient
from novaclient.v1_1 import client as nova_client
from oslo.config import cfg
from ceilometer.openstack.common import log
cfg.CONF.import_group('service_credentials', 'ceilometer.service')
LOG = log.getLogger(__name__)
def logged(func):
@functools.wraps(func)
def with_logging(*args, **kwargs):
try:
return func(*args, **kwargs)
except Exception as e:
LOG.exception(e)
raise
return with_logging
class Client(object):
"""A client which gets information via python-novaclient."""
def __init__(self):
"""Initialize a nova client object."""
conf = cfg.CONF.service_credentials
tenant = conf.os_tenant_id or conf.os_tenant_name
self.nova_client = nova_client.Client(
username=conf.os_username,
api_key=conf.os_password,
project_id=tenant,
auth_url=conf.os_auth_url,
region_name=conf.os_region_name,
endpoint_type=conf.os_endpoint_type,
cacert=conf.os_cacert,
insecure=conf.insecure,
no_cache=True)
def _with_flavor_and_image(self, instances):
for instance in instances:
self._with_flavor(instance)
self._with_image(instance)
return instances
def _with_flavor(self, instance):
fid = instance.flavor['id']
try:
flavor = self.nova_client.flavors.get(fid)
except novaclient.exceptions.NotFound:
flavor = None
attr_defaults = [('name', 'unknown-id-%s' % fid),
('vcpus', 0), ('ram', 0), ('disk', 0),
('ephemeral', 0)]
for attr, default in attr_defaults:
if not flavor:
instance.flavor[attr] = default
continue
instance.flavor[attr] = getattr(flavor, attr, default)
def _with_image(self, instance):
try:
iid = instance.image['id']
except TypeError:
instance.image = None
instance.kernel_id = None
instance.ramdisk_id = None
return
try:
image = self.nova_client.images.get(iid)
except novaclient.exceptions.NotFound:
instance.image['name'] = 'unknown-id-%s' % iid
instance.kernel_id = None
instance.ramdisk_id = None
return
instance.image['name'] = getattr(image, 'name')
image_metadata = getattr(image, 'metadata', None)
for attr in ['kernel_id', 'ramdisk_id']:
ameta = image_metadata.get(attr) if image_metadata else None
setattr(instance, attr, ameta)
@logged
def instance_get_all_by_host(self, hostname):
"""Returns list of instances on particular host."""
search_opts = {'host': hostname, 'all_tenants': True}
return self._with_flavor_and_image(self.nova_client.servers.list(
detailed=True,
search_opts=search_opts))
@logged
def floating_ip_get_all(self):
"""Returns all floating ips."""
return self.nova_client.floating_ips.list(all_tenants=True)
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