133 lines
4.1 KiB
Python
133 lines
4.1 KiB
Python
# Copyright 2012 OpenStack Foundation
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# All Rights Reserved.
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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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import os
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from oslo_serialization import jsonutils as json
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from glance.common import client as base_client
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from glance.common import exception
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from glance.i18n import _
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class CacheClient(base_client.BaseClient):
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DEFAULT_PORT = 9292
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DEFAULT_DOC_ROOT = '/v1'
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def delete_cached_image(self, image_id):
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"""
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Delete a specified image from the cache
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"""
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self.do_request("DELETE", "/cached_images/%s" % image_id)
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return True
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def get_cached_images(self, **kwargs):
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"""
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Returns a list of images stored in the image cache.
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"""
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res = self.do_request("GET", "/cached_images")
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data = json.loads(res.read())['cached_images']
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return data
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def get_queued_images(self, **kwargs):
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"""
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Returns a list of images queued for caching
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"""
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res = self.do_request("GET", "/queued_images")
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data = json.loads(res.read())['queued_images']
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return data
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def delete_all_cached_images(self):
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"""
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Delete all cached images
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"""
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res = self.do_request("DELETE", "/cached_images")
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data = json.loads(res.read())
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num_deleted = data['num_deleted']
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return num_deleted
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def queue_image_for_caching(self, image_id):
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"""
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Queue an image for prefetching into cache
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"""
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self.do_request("PUT", "/queued_images/%s" % image_id)
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return True
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def delete_queued_image(self, image_id):
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"""
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Delete a specified image from the cache queue
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"""
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self.do_request("DELETE", "/queued_images/%s" % image_id)
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return True
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def delete_all_queued_images(self):
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"""
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Delete all queued images
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"""
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res = self.do_request("DELETE", "/queued_images")
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data = json.loads(res.read())
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num_deleted = data['num_deleted']
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return num_deleted
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def get_client(host, port=None, timeout=None, use_ssl=False, username=None,
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password=None, tenant=None,
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auth_url=None, auth_strategy=None,
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auth_token=None, region=None,
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is_silent_upload=False, insecure=False):
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"""
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Returns a new client Glance client object based on common kwargs.
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If an option isn't specified falls back to common environment variable
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defaults.
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"""
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if auth_url or os.getenv('OS_AUTH_URL'):
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force_strategy = 'keystone'
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else:
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force_strategy = None
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creds = {
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'username': username or
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os.getenv('OS_AUTH_USER', os.getenv('OS_USERNAME')),
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'password': password or
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os.getenv('OS_AUTH_KEY', os.getenv('OS_PASSWORD')),
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'tenant': tenant or
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os.getenv('OS_AUTH_TENANT', os.getenv('OS_TENANT_NAME')),
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'auth_url': auth_url or
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os.getenv('OS_AUTH_URL'),
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'strategy': force_strategy or
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auth_strategy or
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os.getenv('OS_AUTH_STRATEGY', 'noauth'),
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'region': region or
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os.getenv('OS_REGION_NAME'),
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}
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if creds['strategy'] == 'keystone' and not creds['auth_url']:
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msg = _("--os_auth_url option or OS_AUTH_URL environment variable "
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"required when keystone authentication strategy is enabled\n")
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raise exception.ClientConfigurationError(msg)
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return CacheClient(
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host=host,
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port=port,
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timeout=timeout,
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use_ssl=use_ssl,
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auth_token=auth_token or
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os.getenv('OS_TOKEN'),
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creds=creds,
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insecure=insecure,
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configure_via_auth=False)
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