79 lines
2.4 KiB
Python
79 lines
2.4 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
|
|
|
|
# Copyright 2011 OpenStack LLC.
|
|
# All Rights Reserved.
|
|
#
|
|
# 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.
|
|
|
|
"""
|
|
Queues images for prefetching into the image cache
|
|
"""
|
|
|
|
import logging
|
|
|
|
import eventlet
|
|
|
|
from glance.common import context
|
|
from glance.common import exception
|
|
from glance.image_cache import ImageCache
|
|
from glance import registry
|
|
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class Queuer(object):
|
|
|
|
def __init__(self, conf, **local_conf):
|
|
self.conf = conf
|
|
self.cache = ImageCache(conf)
|
|
registry.configure_registry_client(conf)
|
|
registry.configure_registry_admin_creds(conf)
|
|
|
|
def queue_image(self, image_id):
|
|
ctx = context.RequestContext(is_admin=True, show_deleted=True)
|
|
try:
|
|
image_meta = registry.get_image_metadata(ctx, image_id)
|
|
if image_meta['status'] != 'active':
|
|
logger.warn(_("Image '%s' is not active. Not queueing."),
|
|
image_id)
|
|
return False
|
|
|
|
except exception.NotFound:
|
|
logger.warn(_("No metadata found for image '%s'"), image_id)
|
|
return False
|
|
|
|
logger.debug(_("Queueing image '%s'"), image_id)
|
|
self.cache.queue_image(image_id)
|
|
return True
|
|
|
|
def run(self, images):
|
|
|
|
num_images = len(images)
|
|
if num_images == 0:
|
|
logger.debug(_("No images to queue!"))
|
|
return True
|
|
|
|
logger.debug(_("Received %d images to queue"), num_images)
|
|
|
|
pool = eventlet.GreenPool(num_images)
|
|
results = pool.imap(self.queue_image, images)
|
|
successes = sum([1 for r in results if r is True])
|
|
if successes != num_images:
|
|
logger.error(_("Failed to successfully queue all "
|
|
"images in queue."))
|
|
return False
|
|
|
|
logger.info(_("Successfully queued all %d images"), num_images)
|
|
return True
|