130 lines
4.4 KiB
Python
130 lines
4.4 KiB
Python
#
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# Copyright 2012 New Dream Network, LLC (DreamHost)
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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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"""Common code for working with images
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"""
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from __future__ import absolute_import
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import glanceclient
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from oslo_config import cfg
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from ceilometer.agent import plugin_base
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from ceilometer import keystone_client
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from ceilometer import sample
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OPTS = [
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cfg.IntOpt('glance_page_size',
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default=0,
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help="Number of items to request in "
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"each paginated Glance API request "
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"(parameter used by glanceclient). "
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"If this is less than or equal to 0, "
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"page size is not specified "
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"(default value in glanceclient is used)."),
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]
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SERVICE_OPTS = [
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cfg.StrOpt('glance',
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default='image',
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help='Glance service type.'),
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]
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cfg.CONF.register_opts(OPTS)
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cfg.CONF.register_opts(SERVICE_OPTS, group='service_types')
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class _Base(plugin_base.PollsterBase):
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@property
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def default_discovery(self):
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return 'endpoint:%s' % cfg.CONF.service_types.glance
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@staticmethod
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def get_glance_client(ksclient, endpoint):
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# hard-code v1 glance API version selection while v2 API matures
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return glanceclient.Client('1',
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session=keystone_client.get_session(),
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endpoint=endpoint,
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auth=ksclient.session.auth)
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def _get_images(self, ksclient, endpoint):
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client = self.get_glance_client(ksclient, endpoint)
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page_size = cfg.CONF.glance_page_size
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kwargs = {}
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if page_size > 0:
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kwargs['page_size'] = page_size
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return client.images.list(filters={"is_public": None}, **kwargs)
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def _iter_images(self, ksclient, cache, endpoint):
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"""Iterate over all images."""
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key = '%s-images' % endpoint
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if key not in cache:
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cache[key] = list(self._get_images(ksclient, endpoint))
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return iter(cache[key])
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@staticmethod
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def extract_image_metadata(image):
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return dict((k, getattr(image, k))
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for k in
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[
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"status",
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"is_public",
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"name",
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"deleted",
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"container_format",
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"created_at",
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"disk_format",
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"updated_at",
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"properties",
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"min_disk",
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"protected",
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"checksum",
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"deleted_at",
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"min_ram",
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"size", ])
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class ImagePollster(_Base):
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def get_samples(self, manager, cache, resources):
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for endpoint in resources:
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for image in self._iter_images(manager.keystone, cache, endpoint):
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yield sample.Sample(
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name='image',
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type=sample.TYPE_GAUGE,
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unit='image',
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volume=1,
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user_id=None,
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project_id=image.owner,
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resource_id=image.id,
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resource_metadata=self.extract_image_metadata(image),
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)
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class ImageSizePollster(_Base):
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def get_samples(self, manager, cache, resources):
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for endpoint in resources:
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for image in self._iter_images(manager.keystone, cache, endpoint):
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yield sample.Sample(
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name='image.size',
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type=sample.TYPE_GAUGE,
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unit='B',
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volume=image.size,
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user_id=None,
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project_id=image.owner,
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resource_id=image.id,
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resource_metadata=self.extract_image_metadata(image),
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)
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