deb-ceilometer/ceilometer/compute/util.py
Julien Danjou a5f8d66d6e Upgrade to hacking 0.10
Change-Id: Ia567c3aeb7f8516d0834dc8e4c3852e43a687043
2015-01-23 17:43:04 +01:00

67 lines
2.4 KiB
Python

#
# Copyright 2014 Red Hat, Inc
#
# 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
import six
# Below config is for collecting metadata which user defined in nova or else,
# and then storing it to Sample for future use according to user's requirement.
# Such as using it as OpenTSDB tags for metrics.
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.ListOpt('reserved_metadata_keys',
default=[],
help='List of metadata keys reserved for metering use. And '
'these keys are additional to the ones included in the '
'namespace.'),
]
cfg.CONF.register_opts(OPTS)
def add_reserved_user_metadata(src_metadata, dest_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, six.string_types) else v)
for k, v in src_metadata.items()
if (k.startswith(prefix) and
k[len(prefix):].replace('.', '_') not in dest_metadata)
)
user_metadata.update(md)
for metadata_key in cfg.CONF.reserved_metadata_keys:
md = dict(
(k.replace('.', '_'),
v[:limit] if isinstance(v, six.string_types) else v)
for k, v in src_metadata.items()
if (k == metadata_key and
k.replace('.', '_') not in dest_metadata)
)
user_metadata.update(md)
if user_metadata:
dest_metadata['user_metadata'] = user_metadata
return dest_metadata