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# -*- encoding: utf-8 -*-
#
# Copyright © 2012 eNovance <licensing@enovance.com>
# Copyright © 2012 Red Hat, Inc
#
# Author: Julien Danjou <julien@danjou.info>
# Author: Eoghan Glynn <eglynn@redhat.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.
from oslo.config import cfg
from ceilometer.openstack.common import timeutils
from ceilometer import sample
INSTANCE_PROPERTIES = [
# Identity properties
'reservation_id',
# Type properties
'architecture',
'OS-EXT-AZ:availability_zone',
'kernel_id',
'os_type',
'ramdisk_id',
]
OPTS = [
cfg.ListOpt('reserved_metadata_namespace',
default=['metering.'],
help='List of metadata prefixes reserved for metering use.'),
cfg.IntOpt('reserved_metadata_length',
default=256,
help='Limit on length of reserved metadata values.'),
]
cfg.CONF.register_opts(OPTS)
def _add_reserved_user_metadata(instance, metadata):
limit = cfg.CONF.reserved_metadata_length
user_metadata = {}
for prefix in cfg.CONF.reserved_metadata_namespace:
md = dict(
(k[len(prefix):].replace('.', '_'),
v[:limit] if isinstance(v, basestring) else v)
for k, v in instance.metadata.items()
if (k.startswith(prefix) and
k[len(prefix):].replace('.', '_') not in metadata)
)
user_metadata.update(md)
if user_metadata:
metadata['user_metadata'] = user_metadata
return metadata
def _get_metadata_from_object(instance):
"""Return a metadata dictionary for the instance.
"""
metadata = {
'display_name': instance.name,
'name': getattr(instance, 'OS-EXT-SRV-ATTR:instance_name', u''),
'instance_type': (instance.flavor['id'] if instance.flavor else None),
'host': instance.hostId,
'flavor': instance.flavor,
# Image properties
'image': instance.image,
'image_ref': (instance.image['id'] if instance.image else None),
}
# Images that come through the conductor API in the nova notifier
# plugin will not have links.
if instance.image and instance.image.get('links'):
metadata['image_ref_url'] = instance.image['links'][0]['href']
else:
metadata['image_ref_url'] = None
for name in INSTANCE_PROPERTIES:
if hasattr(instance, name):
metadata[name] = getattr(instance, name)
metadata['vcpus'] = instance.flavor['vcpus']
metadata['memory_mb'] = instance.flavor['ram']
metadata['disk_gb'] = instance.flavor['disk']
metadata['ephemeral_gb'] = instance.flavor['ephemeral']
metadata['root_gb'] = int(metadata['disk_gb']) - \
int(metadata['ephemeral_gb'])
return _add_reserved_user_metadata(instance, metadata)
def make_sample_from_instance(instance, name, type, unit, volume,
additional_metadata={}):
resource_metadata = _get_metadata_from_object(instance)
resource_metadata.update(additional_metadata)
return sample.Sample(
name=name,
type=type,
unit=unit,
volume=volume,
user_id=instance.user_id,
project_id=instance.tenant_id,
resource_id=instance.id,
timestamp=timeutils.isotime(),
resource_metadata=resource_metadata,
)
def instance_name(instance):
"""Shortcut to get instance name."""
return getattr(instance, 'OS-EXT-SRV-ATTR:instance_name', None)
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