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# -*- encoding: utf-8 -*-
#
# Copyright © 2012 New Dream Network, LLC (DreamHost)
#
# Author: Julien Danjou <julien@danjou.info>
#
# 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.
"""Common code for working with images
"""
from __future__ import absolute_import
import itertools
import glanceclient
from keystoneclient.v2_0 import client as ksclient
from ceilometer import plugin
from ceilometer import counter
from ceilometer.openstack.common import cfg
from ceilometer.openstack.common import timeutils
class _Base(plugin.PollsterBase):
@staticmethod
def get_glance_client():
k = ksclient.Client(username=cfg.CONF.os_username,
password=cfg.CONF.os_password,
tenant_id=cfg.CONF.os_tenant_id,
tenant_name=cfg.CONF.os_tenant_name,
auth_url=cfg.CONF.os_auth_url)
endpoint = k.service_catalog.url_for(service_type='image',
endpoint_type='internalURL')
# hard-code v1 glance API version selection while v2 API matures
return glanceclient.Client('1', endpoint, token=k.auth_token)
def iter_images(self):
"""Iterate over all images."""
client = self.get_glance_client()
#TODO(eglynn): use pagination to protect against unbounded
# memory usage
return itertools.chain(
client.images.list(filters={"is_public": True}),
#TODO(eglynn): extend glance API with all_tenants logic to
# avoid second call to retrieve private images
client.images.list(filters={"is_public": False}))
@staticmethod
def extract_image_metadata(image):
return dict((k, getattr(image, k))
for k in
[
"status",
"is_public",
"name",
"deleted",
"container_format",
"created_at",
"disk_format",
"updated_at",
"properties",
"min_disk",
"protected",
"checksum",
"deleted_at",
"min_ram",
"size",
])
class ImagePollster(_Base):
def get_counters(self, manager, context):
for image in self.iter_images():
yield counter.Counter(
name='image',
type=counter.TYPE_GAUGE,
unit='image',
volume=1,
user_id=None,
project_id=image.owner,
resource_id=image.id,
timestamp=timeutils.isotime(),
resource_metadata=self.extract_image_metadata(image),
)
class ImageSizePollster(_Base):
def get_counters(self, manager, context):
for image in self.iter_images():
yield counter.Counter(
name='image.size',
type=counter.TYPE_GAUGE,
unit='B',
volume=image.size,
user_id=None,
project_id=image.owner,
resource_id=image.id,
timestamp=timeutils.isotime(),
resource_metadata=self.extract_image_metadata(image),
)
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