1350 lines
55 KiB
Python
1350 lines
55 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 hashlib
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import os
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import re
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import glance_store
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from oslo_config import cfg
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from oslo_log import log as logging
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from oslo_serialization import jsonutils as json
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from oslo_utils import encodeutils
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import six
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from six.moves import http_client as http
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import six.moves.urllib.parse as urlparse
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import webob.exc
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from glance.api import common
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from glance.api import policy
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from glance.common import exception
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from glance.common import location_strategy
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from glance.common import timeutils
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from glance.common import utils
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from glance.common import wsgi
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import glance.db
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import glance.gateway
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from glance.i18n import _, _LW
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import glance.notifier
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import glance.schema
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LOG = logging.getLogger(__name__)
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CONF = cfg.CONF
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CONF.import_opt('disk_formats', 'glance.common.config', group='image_format')
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CONF.import_opt('container_formats', 'glance.common.config',
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group='image_format')
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CONF.import_opt('show_multiple_locations', 'glance.common.config')
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CONF.import_opt('hashing_algorithm', 'glance.common.config')
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class ImagesController(object):
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def __init__(self, db_api=None, policy_enforcer=None, notifier=None,
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store_api=None):
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self.db_api = db_api or glance.db.get_api()
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self.policy = policy_enforcer or policy.Enforcer()
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self.notifier = notifier or glance.notifier.Notifier()
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self.store_api = store_api or glance_store
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self.gateway = glance.gateway.Gateway(self.db_api, self.store_api,
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self.notifier, self.policy)
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@utils.mutating
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def create(self, req, image, extra_properties, tags):
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image_factory = self.gateway.get_image_factory(req.context)
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image_repo = self.gateway.get_repo(req.context)
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try:
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image = image_factory.new_image(extra_properties=extra_properties,
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tags=tags, **image)
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image_repo.add(image)
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except (exception.DuplicateLocation,
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exception.Invalid) as e:
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raise webob.exc.HTTPBadRequest(explanation=e.msg)
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except (exception.ReservedProperty,
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exception.ReadonlyProperty) as e:
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raise webob.exc.HTTPForbidden(explanation=e.msg)
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except exception.Forbidden as e:
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LOG.debug("User not permitted to create image")
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raise webob.exc.HTTPForbidden(explanation=e.msg)
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except exception.LimitExceeded as e:
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LOG.warn(encodeutils.exception_to_unicode(e))
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raise webob.exc.HTTPRequestEntityTooLarge(
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explanation=e.msg, request=req, content_type='text/plain')
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except exception.Duplicate as e:
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raise webob.exc.HTTPConflict(explanation=e.msg)
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except exception.NotAuthenticated as e:
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raise webob.exc.HTTPUnauthorized(explanation=e.msg)
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except TypeError as e:
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LOG.debug(encodeutils.exception_to_unicode(e))
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raise webob.exc.HTTPBadRequest(explanation=e)
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return image
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@utils.mutating
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def import_image(self, req, image_id, body):
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image_repo = self.gateway.get_repo(req.context)
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task_factory = self.gateway.get_task_factory(req.context)
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executor_factory = self.gateway.get_task_executor_factory(req.context)
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task_repo = self.gateway.get_task_repo(req.context)
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import_method = body.get('method').get('name')
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uri = body.get('method').get('uri')
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try:
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image = image_repo.get(image_id)
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if image.status == 'active':
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msg = _("Image with status active cannot be target for import")
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raise exception.Conflict(msg)
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if image.status != 'queued' and import_method == 'web-download':
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msg = _("Image needs to be in 'queued' state to use "
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"'web-download' method")
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raise exception.Conflict(msg)
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if (image.status != 'uploading' and
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import_method == 'glance-direct'):
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msg = _("Image needs to be staged before 'glance-direct' "
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"method can be used")
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raise exception.Conflict(msg)
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if not getattr(image, 'container_format', None):
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msg = _("'container_format' needs to be set before import")
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raise exception.Conflict(msg)
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if not getattr(image, 'disk_format', None):
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msg = _("'disk_format' needs to be set before import")
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raise exception.Conflict(msg)
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backend = None
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if CONF.enabled_backends:
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backend = req.headers.get('x-image-meta-store',
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CONF.glance_store.default_backend)
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try:
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glance_store.get_store_from_store_identifier(backend)
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except glance_store.UnknownScheme:
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msg = _("Store for scheme %s not found") % backend
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LOG.warn(msg)
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raise exception.Conflict(msg)
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except exception.Conflict as e:
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raise webob.exc.HTTPConflict(explanation=e.msg)
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except exception.NotFound as e:
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raise webob.exc.HTTPNotFound(explanation=e.msg)
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task_input = {'image_id': image_id,
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'import_req': body,
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'backend': backend}
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if (import_method == 'web-download' and
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not utils.validate_import_uri(uri)):
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LOG.debug("URI for web-download does not pass filtering: %s",
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uri)
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msg = (_("URI for web-download does not pass filtering: %s") %
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uri)
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raise webob.exc.HTTPBadRequest(explanation=msg)
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try:
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import_task = task_factory.new_task(task_type='api_image_import',
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owner=req.context.owner,
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task_input=task_input)
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task_repo.add(import_task)
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task_executor = executor_factory.new_task_executor(req.context)
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pool = common.get_thread_pool("tasks_eventlet_pool")
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pool.spawn_n(import_task.run, task_executor)
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except exception.Forbidden as e:
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LOG.debug("User not permitted to create image import task.")
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raise webob.exc.HTTPForbidden(explanation=e.msg)
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except exception.Conflict as e:
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raise webob.exc.HTTPConflict(explanation=e.msg)
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except exception.InvalidImageStatusTransition as e:
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raise webob.exc.HTTPConflict(explanation=e.msg)
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except ValueError as e:
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LOG.debug("Cannot import data for image %(id)s: %(e)s",
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{'id': image_id,
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'e': encodeutils.exception_to_unicode(e)})
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raise webob.exc.HTTPBadRequest(
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explanation=encodeutils.exception_to_unicode(e))
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return image_id
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def index(self, req, marker=None, limit=None, sort_key=None,
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sort_dir=None, filters=None, member_status='accepted'):
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sort_key = ['created_at'] if not sort_key else sort_key
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sort_dir = ['desc'] if not sort_dir else sort_dir
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result = {}
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if filters is None:
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filters = {}
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filters['deleted'] = False
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os_hidden = filters.get('os_hidden', 'false').lower()
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if os_hidden not in ['true', 'false']:
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message = _("Invalid value '%s' for 'os_hidden' filter."
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" Valid values are 'true' or 'false'.") % os_hidden
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raise webob.exc.HTTPBadRequest(explanation=message)
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# ensure the type of os_hidden is boolean
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filters['os_hidden'] = os_hidden == 'true'
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protected = filters.get('protected')
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if protected is not None:
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if protected not in ['true', 'false']:
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message = _("Invalid value '%s' for 'protected' filter."
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" Valid values are 'true' or 'false'.") % protected
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raise webob.exc.HTTPBadRequest(explanation=message)
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# ensure the type of protected is boolean
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filters['protected'] = protected == 'true'
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if limit is None:
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limit = CONF.limit_param_default
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limit = min(CONF.api_limit_max, limit)
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image_repo = self.gateway.get_repo(req.context)
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try:
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images = image_repo.list(marker=marker, limit=limit,
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sort_key=sort_key,
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sort_dir=sort_dir,
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filters=filters,
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member_status=member_status)
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if len(images) != 0 and len(images) == limit:
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result['next_marker'] = images[-1].image_id
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except (exception.NotFound, exception.InvalidSortKey,
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exception.InvalidFilterRangeValue,
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exception.InvalidParameterValue,
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exception.InvalidFilterOperatorValue) as e:
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raise webob.exc.HTTPBadRequest(explanation=e.msg)
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except exception.Forbidden as e:
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LOG.debug("User not permitted to retrieve images index")
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raise webob.exc.HTTPForbidden(explanation=e.msg)
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except exception.NotAuthenticated as e:
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raise webob.exc.HTTPUnauthorized(explanation=e.msg)
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result['images'] = images
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return result
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def show(self, req, image_id):
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image_repo = self.gateway.get_repo(req.context)
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try:
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return image_repo.get(image_id)
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except exception.Forbidden as e:
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LOG.debug("User not permitted to show image '%s'", image_id)
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raise webob.exc.HTTPForbidden(explanation=e.msg)
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except exception.NotFound as e:
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raise webob.exc.HTTPNotFound(explanation=e.msg)
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except exception.NotAuthenticated as e:
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raise webob.exc.HTTPUnauthorized(explanation=e.msg)
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@utils.mutating
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def update(self, req, image_id, changes):
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image_repo = self.gateway.get_repo(req.context)
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try:
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image = image_repo.get(image_id)
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for change in changes:
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change_method_name = '_do_%s' % change['op']
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change_method = getattr(self, change_method_name)
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change_method(req, image, change)
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if changes:
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image_repo.save(image)
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except exception.NotFound as e:
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raise webob.exc.HTTPNotFound(explanation=e.msg)
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except (exception.Invalid, exception.BadStoreUri) as e:
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raise webob.exc.HTTPBadRequest(explanation=e.msg)
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except exception.Forbidden as e:
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LOG.debug("User not permitted to update image '%s'", image_id)
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raise webob.exc.HTTPForbidden(explanation=e.msg)
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except exception.StorageQuotaFull as e:
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msg = (_("Denying attempt to upload image because it exceeds the"
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" quota: %s") % encodeutils.exception_to_unicode(e))
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LOG.warn(msg)
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raise webob.exc.HTTPRequestEntityTooLarge(
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explanation=msg, request=req, content_type='text/plain')
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except exception.LimitExceeded as e:
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LOG.exception(encodeutils.exception_to_unicode(e))
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raise webob.exc.HTTPRequestEntityTooLarge(
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explanation=e.msg, request=req, content_type='text/plain')
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except exception.NotAuthenticated as e:
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raise webob.exc.HTTPUnauthorized(explanation=e.msg)
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return image
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def _do_replace(self, req, image, change):
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path = change['path']
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path_root = path[0]
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value = change['value']
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if path_root == 'locations' and not value:
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msg = _("Cannot set locations to empty list.")
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raise webob.exc.HTTPForbidden(msg)
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elif path_root == 'locations' and value:
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self._do_replace_locations(image, value)
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elif path_root == 'owner' and req.context.is_admin == False:
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msg = _("Owner can't be updated by non admin.")
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raise webob.exc.HTTPForbidden(msg)
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else:
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if hasattr(image, path_root):
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setattr(image, path_root, value)
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elif path_root in image.extra_properties:
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image.extra_properties[path_root] = value
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else:
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msg = _("Property %s does not exist.")
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raise webob.exc.HTTPConflict(msg % path_root)
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def _do_add(self, req, image, change):
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path = change['path']
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path_root = path[0]
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value = change['value']
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json_schema_version = change.get('json_schema_version', 10)
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if path_root == 'locations':
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self._do_add_locations(image, path[1], value)
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else:
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if ((hasattr(image, path_root) or
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path_root in image.extra_properties)
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and json_schema_version == 4):
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msg = _("Property %s already present.")
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raise webob.exc.HTTPConflict(msg % path_root)
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if hasattr(image, path_root):
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setattr(image, path_root, value)
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else:
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image.extra_properties[path_root] = value
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def _do_remove(self, req, image, change):
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path = change['path']
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path_root = path[0]
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if path_root == 'locations':
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try:
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self._do_remove_locations(image, path[1])
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except exception.Forbidden as e:
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raise webob.exc.HTTPForbidden(e.msg)
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else:
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if hasattr(image, path_root):
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msg = _("Property %s may not be removed.")
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raise webob.exc.HTTPForbidden(msg % path_root)
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elif path_root in image.extra_properties:
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del image.extra_properties[path_root]
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else:
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msg = _("Property %s does not exist.")
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raise webob.exc.HTTPConflict(msg % path_root)
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@utils.mutating
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def delete(self, req, image_id):
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image_repo = self.gateway.get_repo(req.context)
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try:
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image = image_repo.get(image_id)
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file_path = str(
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CONF.node_staging_uri + '/' + image_id)[7:]
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if os.path.exists(file_path):
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try:
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LOG.debug(
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"After upload to the backend, deleting staged "
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"image data from %(fn)s", {'fn': file_path})
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os.unlink(file_path)
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except OSError as e:
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LOG.error(
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"After upload to backend, deletion of staged "
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"image data from %(fn)s has failed because "
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"[Errno %(en)d]", {'fn': file_path,
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'en': e.errno})
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else:
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LOG.warning(_(
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"After upload to backend, deletion of staged "
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"image data has failed because "
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"it cannot be found at %(fn)s"), {'fn': file_path})
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image.delete()
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image_repo.remove(image)
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except (glance_store.Forbidden, exception.Forbidden) as e:
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LOG.debug("User not permitted to delete image '%s'", image_id)
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raise webob.exc.HTTPForbidden(explanation=e.msg)
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except (glance_store.NotFound, exception.NotFound) as e:
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msg = (_("Failed to find image %(image_id)s to delete") %
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{'image_id': image_id})
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LOG.warn(msg)
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raise webob.exc.HTTPNotFound(explanation=msg)
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except glance_store.exceptions.InUseByStore as e:
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msg = (_("Image %(id)s could not be deleted "
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"because it is in use: %(exc)s") %
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{"id": image_id,
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"exc": e.msg})
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LOG.warn(msg)
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raise webob.exc.HTTPConflict(explanation=msg)
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except glance_store.exceptions.HasSnapshot as e:
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raise webob.exc.HTTPConflict(explanation=e.msg)
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except exception.InvalidImageStatusTransition as e:
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raise webob.exc.HTTPBadRequest(explanation=e.msg)
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except exception.NotAuthenticated as e:
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raise webob.exc.HTTPUnauthorized(explanation=e.msg)
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def _validate_validation_data(self, image, locations):
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val_data = {}
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for loc in locations:
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if 'validation_data' not in loc:
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continue
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for k, v in loc['validation_data'].items():
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if val_data.get(k, v) != v:
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msg = _("Conflicting values for %s") % k
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raise webob.exc.HTTPConflict(explanation=msg)
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val_data[k] = v
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# NOTE(imacdonn): values may be provided for items which are
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# already set, so long as the values exactly match. In this
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# case, nothing actually needs to be updated, but we should
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# reject the request if there's an apparent attempt to supply
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# a different value.
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new_val_data = {}
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for k, v in val_data.items():
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current = getattr(image, k)
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if v == current:
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continue
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if current:
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msg = _("%s is already set with a different value") % k
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raise webob.exc.HTTPConflict(explanation=msg)
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new_val_data[k] = v
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if not new_val_data:
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return {}
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|
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if image.status != 'queued':
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msg = _("New value(s) for %s may only be provided when image "
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"status is 'queued'") % ', '.join(new_val_data.keys())
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raise webob.exc.HTTPConflict(explanation=msg)
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|
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if 'checksum' in new_val_data:
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try:
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checksum_bytes = bytearray.fromhex(new_val_data['checksum'])
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except ValueError:
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msg = (_("checksum (%s) is not a valid hexadecimal value") %
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new_val_data['checksum'])
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raise webob.exc.HTTPConflict(explanation=msg)
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if len(checksum_bytes) != 16:
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msg = (_("checksum (%s) is not the correct size for md5 "
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"(should be 16 bytes)") %
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new_val_data['checksum'])
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raise webob.exc.HTTPConflict(explanation=msg)
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hash_algo = new_val_data.get('os_hash_algo')
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if hash_algo != CONF['hashing_algorithm']:
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msg = (_("os_hash_algo must be %(want)s, not %(got)s") %
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{'want': CONF['hashing_algorithm'], 'got': hash_algo})
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raise webob.exc.HTTPConflict(explanation=msg)
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try:
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hash_bytes = bytearray.fromhex(new_val_data['os_hash_value'])
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except ValueError:
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msg = (_("os_hash_value (%s) is not a valid hexadecimal value") %
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new_val_data['os_hash_value'])
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raise webob.exc.HTTPConflict(explanation=msg)
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want_size = hashlib.new(hash_algo).digest_size
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if len(hash_bytes) != want_size:
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msg = (_("os_hash_value (%(value)s) is not the correct size for "
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"%(algo)s (should be %(want)d bytes)") %
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{'value': new_val_data['os_hash_value'],
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'algo': hash_algo,
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'want': want_size})
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raise webob.exc.HTTPConflict(explanation=msg)
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return new_val_data
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|
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def _get_locations_op_pos(self, path_pos, max_pos, allow_max):
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if path_pos is None or max_pos is None:
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return None
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pos = max_pos if allow_max else max_pos - 1
|
|
if path_pos.isdigit():
|
|
pos = int(path_pos)
|
|
elif path_pos != '-':
|
|
return None
|
|
if not (allow_max or 0 <= pos < max_pos):
|
|
return None
|
|
return pos
|
|
|
|
def _do_replace_locations(self, image, value):
|
|
if CONF.show_multiple_locations == False:
|
|
msg = _("It's not allowed to update locations if locations are "
|
|
"invisible.")
|
|
raise webob.exc.HTTPForbidden(explanation=msg)
|
|
|
|
if image.status not in ('active', 'queued'):
|
|
msg = _("It's not allowed to replace locations if image status is "
|
|
"%s.") % image.status
|
|
raise webob.exc.HTTPConflict(explanation=msg)
|
|
|
|
val_data = self._validate_validation_data(image, value)
|
|
|
|
try:
|
|
# NOTE(flwang): _locations_proxy's setattr method will check if
|
|
# the update is acceptable.
|
|
image.locations = value
|
|
if image.status == 'queued':
|
|
for k, v in val_data.items():
|
|
setattr(image, k, v)
|
|
image.status = 'active'
|
|
except (exception.BadStoreUri, exception.DuplicateLocation) as e:
|
|
raise webob.exc.HTTPBadRequest(explanation=e.msg)
|
|
except ValueError as ve: # update image status failed.
|
|
raise webob.exc.HTTPBadRequest(
|
|
explanation=encodeutils.exception_to_unicode(ve))
|
|
|
|
def _do_add_locations(self, image, path_pos, value):
|
|
if CONF.show_multiple_locations == False:
|
|
msg = _("It's not allowed to add locations if locations are "
|
|
"invisible.")
|
|
raise webob.exc.HTTPForbidden(explanation=msg)
|
|
|
|
if image.status not in ('active', 'queued'):
|
|
msg = _("It's not allowed to add locations if image status is "
|
|
"%s.") % image.status
|
|
raise webob.exc.HTTPConflict(explanation=msg)
|
|
|
|
val_data = self._validate_validation_data(image, [value])
|
|
|
|
pos = self._get_locations_op_pos(path_pos,
|
|
len(image.locations), True)
|
|
if pos is None:
|
|
msg = _("Invalid position for adding a location.")
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
try:
|
|
image.locations.insert(pos, value)
|
|
if image.status == 'queued':
|
|
for k, v in val_data.items():
|
|
setattr(image, k, v)
|
|
image.status = 'active'
|
|
except (exception.BadStoreUri, exception.DuplicateLocation) as e:
|
|
raise webob.exc.HTTPBadRequest(explanation=e.msg)
|
|
except ValueError as e: # update image status failed.
|
|
raise webob.exc.HTTPBadRequest(
|
|
explanation=encodeutils.exception_to_unicode(e))
|
|
|
|
def _do_remove_locations(self, image, path_pos):
|
|
if CONF.show_multiple_locations == False:
|
|
msg = _("It's not allowed to remove locations if locations are "
|
|
"invisible.")
|
|
raise webob.exc.HTTPForbidden(explanation=msg)
|
|
|
|
if image.status not in ('active'):
|
|
msg = _("It's not allowed to remove locations if image status is "
|
|
"%s.") % image.status
|
|
raise webob.exc.HTTPConflict(explanation=msg)
|
|
|
|
if len(image.locations) == 1:
|
|
LOG.debug("User forbidden to remove last location of image %s",
|
|
image.image_id)
|
|
msg = _("Cannot remove last location in the image.")
|
|
raise exception.Forbidden(msg)
|
|
pos = self._get_locations_op_pos(path_pos,
|
|
len(image.locations), False)
|
|
if pos is None:
|
|
msg = _("Invalid position for removing a location.")
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
try:
|
|
# NOTE(zhiyan): this actually deletes the location
|
|
# from the backend store.
|
|
image.locations.pop(pos)
|
|
# TODO(jokke): Fix this, we should catch what store throws and
|
|
# provide definitely something else than IternalServerError to user.
|
|
except Exception as e:
|
|
raise webob.exc.HTTPInternalServerError(
|
|
explanation=encodeutils.exception_to_unicode(e))
|
|
|
|
|
|
class RequestDeserializer(wsgi.JSONRequestDeserializer):
|
|
|
|
_disallowed_properties = ('direct_url', 'self', 'file', 'schema')
|
|
_readonly_properties = ('created_at', 'updated_at', 'status', 'checksum',
|
|
'size', 'virtual_size', 'direct_url', 'self',
|
|
'file', 'schema', 'id', 'os_hash_algo',
|
|
'os_hash_value')
|
|
_reserved_properties = ('location', 'deleted', 'deleted_at')
|
|
_base_properties = ('checksum', 'created_at', 'container_format',
|
|
'disk_format', 'id', 'min_disk', 'min_ram', 'name',
|
|
'size', 'virtual_size', 'status', 'tags', 'owner',
|
|
'updated_at', 'visibility', 'protected', 'os_hidden')
|
|
_available_sort_keys = ('name', 'status', 'container_format',
|
|
'disk_format', 'size', 'id', 'created_at',
|
|
'updated_at')
|
|
|
|
_default_sort_key = 'created_at'
|
|
|
|
_default_sort_dir = 'desc'
|
|
|
|
_path_depth_limits = {'locations': {'add': 2, 'remove': 2, 'replace': 1}}
|
|
|
|
_supported_operations = ('add', 'remove', 'replace')
|
|
|
|
def __init__(self, schema=None):
|
|
super(RequestDeserializer, self).__init__()
|
|
self.schema = schema or get_schema()
|
|
|
|
def _get_request_body(self, request):
|
|
output = super(RequestDeserializer, self).default(request)
|
|
if 'body' not in output:
|
|
msg = _('Body expected in request.')
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
return output['body']
|
|
|
|
@classmethod
|
|
def _check_allowed(cls, image):
|
|
for key in cls._disallowed_properties:
|
|
if key in image:
|
|
msg = _("Attribute '%s' is read-only.") % key
|
|
raise webob.exc.HTTPForbidden(
|
|
explanation=six.text_type(msg))
|
|
|
|
def create(self, request):
|
|
body = self._get_request_body(request)
|
|
self._check_allowed(body)
|
|
try:
|
|
self.schema.validate(body)
|
|
except exception.InvalidObject as e:
|
|
raise webob.exc.HTTPBadRequest(explanation=e.msg)
|
|
image = {}
|
|
properties = body
|
|
tags = properties.pop('tags', [])
|
|
for key in self._base_properties:
|
|
try:
|
|
# NOTE(flwang): Instead of changing the _check_unexpected
|
|
# of ImageFactory. It would be better to do the mapping
|
|
# at here.
|
|
if key == 'id':
|
|
image['image_id'] = properties.pop(key)
|
|
else:
|
|
image[key] = properties.pop(key)
|
|
except KeyError:
|
|
pass
|
|
|
|
# NOTE(abhishekk): Check if custom property key name is less than 255
|
|
# characters. Reference LP #1737952
|
|
for key in properties:
|
|
if len(key) > 255:
|
|
msg = (_("Custom property should not be greater than 255 "
|
|
"characters."))
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
|
|
return dict(image=image, extra_properties=properties, tags=tags)
|
|
|
|
def _get_change_operation_d10(self, raw_change):
|
|
op = raw_change.get('op')
|
|
if op is None:
|
|
msg = (_('Unable to find `op` in JSON Schema change. '
|
|
'It must be one of the following: %(available)s.') %
|
|
{'available': ', '.join(self._supported_operations)})
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
if op not in self._supported_operations:
|
|
msg = (_('Invalid operation: `%(op)s`. '
|
|
'It must be one of the following: %(available)s.') %
|
|
{'op': op,
|
|
'available': ', '.join(self._supported_operations)})
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
return op
|
|
|
|
def _get_change_operation_d4(self, raw_change):
|
|
op = None
|
|
for key in self._supported_operations:
|
|
if key in raw_change:
|
|
if op is not None:
|
|
msg = _('Operation objects must contain only one member'
|
|
' named "add", "remove", or "replace".')
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
op = key
|
|
if op is None:
|
|
msg = _('Operation objects must contain exactly one member'
|
|
' named "add", "remove", or "replace".')
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
return op
|
|
|
|
def _get_change_path_d10(self, raw_change):
|
|
try:
|
|
return raw_change['path']
|
|
except KeyError:
|
|
msg = _("Unable to find '%s' in JSON Schema change") % 'path'
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
|
|
def _get_change_path_d4(self, raw_change, op):
|
|
return raw_change[op]
|
|
|
|
def _decode_json_pointer(self, pointer):
|
|
"""Parse a json pointer.
|
|
|
|
Json Pointers are defined in
|
|
http://tools.ietf.org/html/draft-pbryan-zyp-json-pointer .
|
|
The pointers use '/' for separation between object attributes, such
|
|
that '/A/B' would evaluate to C in {"A": {"B": "C"}}. A '/' character
|
|
in an attribute name is encoded as "~1" and a '~' character is encoded
|
|
as "~0".
|
|
"""
|
|
self._validate_json_pointer(pointer)
|
|
ret = []
|
|
for part in pointer.lstrip('/').split('/'):
|
|
ret.append(part.replace('~1', '/').replace('~0', '~').strip())
|
|
return ret
|
|
|
|
def _validate_json_pointer(self, pointer):
|
|
"""Validate a json pointer.
|
|
|
|
We only accept a limited form of json pointers.
|
|
"""
|
|
if not pointer.startswith('/'):
|
|
msg = _('Pointer `%s` does not start with "/".') % pointer
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
if re.search('/\s*?/', pointer[1:]):
|
|
msg = _('Pointer `%s` contains adjacent "/".') % pointer
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
if len(pointer) > 1 and pointer.endswith('/'):
|
|
msg = _('Pointer `%s` end with "/".') % pointer
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
if pointer[1:].strip() == '/':
|
|
msg = _('Pointer `%s` does not contains valid token.') % pointer
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
if re.search('~[^01]', pointer) or pointer.endswith('~'):
|
|
msg = _('Pointer `%s` contains "~" not part of'
|
|
' a recognized escape sequence.') % pointer
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
|
|
def _get_change_value(self, raw_change, op):
|
|
if 'value' not in raw_change:
|
|
msg = _('Operation "%s" requires a member named "value".')
|
|
raise webob.exc.HTTPBadRequest(explanation=msg % op)
|
|
return raw_change['value']
|
|
|
|
def _validate_change(self, change):
|
|
path_root = change['path'][0]
|
|
if path_root in self._readonly_properties:
|
|
msg = _("Attribute '%s' is read-only.") % path_root
|
|
raise webob.exc.HTTPForbidden(explanation=six.text_type(msg))
|
|
if path_root in self._reserved_properties:
|
|
msg = _("Attribute '%s' is reserved.") % path_root
|
|
raise webob.exc.HTTPForbidden(explanation=six.text_type(msg))
|
|
|
|
if change['op'] == 'remove':
|
|
return
|
|
|
|
partial_image = None
|
|
if len(change['path']) == 1:
|
|
partial_image = {path_root: change['value']}
|
|
elif ((path_root in get_base_properties().keys()) and
|
|
(get_base_properties()[path_root].get('type', '') == 'array')):
|
|
# NOTE(zhiyan): client can use the PATCH API to add an element
|
|
# directly to an existing property
|
|
# Such as: 1. using '/locations/N' path to add a location
|
|
# to the image's 'locations' list at position N.
|
|
# (implemented)
|
|
# 2. using '/tags/-' path to append a tag to the
|
|
# image's 'tags' list at the end. (Not implemented)
|
|
partial_image = {path_root: [change['value']]}
|
|
|
|
if partial_image:
|
|
try:
|
|
self.schema.validate(partial_image)
|
|
except exception.InvalidObject as e:
|
|
raise webob.exc.HTTPBadRequest(explanation=e.msg)
|
|
|
|
def _validate_path(self, op, path):
|
|
path_root = path[0]
|
|
limits = self._path_depth_limits.get(path_root, {})
|
|
if len(path) != limits.get(op, 1):
|
|
msg = _("Invalid JSON pointer for this resource: "
|
|
"'/%s'") % '/'.join(path)
|
|
raise webob.exc.HTTPBadRequest(explanation=six.text_type(msg))
|
|
|
|
def _parse_json_schema_change(self, raw_change, draft_version):
|
|
if draft_version == 10:
|
|
op = self._get_change_operation_d10(raw_change)
|
|
path = self._get_change_path_d10(raw_change)
|
|
elif draft_version == 4:
|
|
op = self._get_change_operation_d4(raw_change)
|
|
path = self._get_change_path_d4(raw_change, op)
|
|
else:
|
|
msg = _('Unrecognized JSON Schema draft version')
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
|
|
path_list = self._decode_json_pointer(path)
|
|
return op, path_list
|
|
|
|
def update(self, request):
|
|
changes = []
|
|
content_types = {
|
|
'application/openstack-images-v2.0-json-patch': 4,
|
|
'application/openstack-images-v2.1-json-patch': 10,
|
|
}
|
|
if request.content_type not in content_types:
|
|
headers = {'Accept-Patch':
|
|
', '.join(sorted(content_types.keys()))}
|
|
raise webob.exc.HTTPUnsupportedMediaType(headers=headers)
|
|
|
|
json_schema_version = content_types[request.content_type]
|
|
|
|
body = self._get_request_body(request)
|
|
|
|
if not isinstance(body, list):
|
|
msg = _('Request body must be a JSON array of operation objects.')
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
|
|
for raw_change in body:
|
|
if not isinstance(raw_change, dict):
|
|
msg = _('Operations must be JSON objects.')
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
|
|
(op, path) = self._parse_json_schema_change(raw_change,
|
|
json_schema_version)
|
|
|
|
# NOTE(zhiyan): the 'path' is a list.
|
|
self._validate_path(op, path)
|
|
change = {'op': op, 'path': path,
|
|
'json_schema_version': json_schema_version}
|
|
|
|
if not op == 'remove':
|
|
change['value'] = self._get_change_value(raw_change, op)
|
|
|
|
self._validate_change(change)
|
|
|
|
changes.append(change)
|
|
|
|
return {'changes': changes}
|
|
|
|
def _validate_limit(self, limit):
|
|
try:
|
|
limit = int(limit)
|
|
except ValueError:
|
|
msg = _("limit param must be an integer")
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
|
|
if limit < 0:
|
|
msg = _("limit param must be positive")
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
|
|
return limit
|
|
|
|
def _validate_sort_key(self, sort_key):
|
|
if sort_key not in self._available_sort_keys:
|
|
msg = _('Invalid sort key: %(sort_key)s. '
|
|
'It must be one of the following: %(available)s.') % (
|
|
{'sort_key': sort_key,
|
|
'available': ', '.join(self._available_sort_keys)})
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
|
|
return sort_key
|
|
|
|
def _validate_sort_dir(self, sort_dir):
|
|
if sort_dir not in ['asc', 'desc']:
|
|
msg = _('Invalid sort direction: %s') % sort_dir
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
|
|
return sort_dir
|
|
|
|
def _validate_member_status(self, member_status):
|
|
if member_status not in ['pending', 'accepted', 'rejected', 'all']:
|
|
msg = _('Invalid status: %s') % member_status
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
|
|
return member_status
|
|
|
|
def _get_filters(self, filters):
|
|
visibility = filters.get('visibility')
|
|
if visibility:
|
|
if visibility not in ['community', 'public', 'private', 'shared',
|
|
'all']:
|
|
msg = _('Invalid visibility value: %s') % visibility
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
changes_since = filters.get('changes-since')
|
|
if changes_since:
|
|
msg = _('The "changes-since" filter is no longer available on v2.')
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
|
|
return filters
|
|
|
|
def _get_sorting_params(self, params):
|
|
"""
|
|
Process sorting params.
|
|
Currently glance supports two sorting syntax: classic and new one,
|
|
that is uniform for all OpenStack projects.
|
|
Classic syntax: sort_key=name&sort_dir=asc&sort_key=size&sort_dir=desc
|
|
New syntax: sort=name:asc,size:desc
|
|
"""
|
|
sort_keys = []
|
|
sort_dirs = []
|
|
|
|
if 'sort' in params:
|
|
# use new sorting syntax here
|
|
if 'sort_key' in params or 'sort_dir' in params:
|
|
msg = _('Old and new sorting syntax cannot be combined')
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
for sort_param in params.pop('sort').strip().split(','):
|
|
key, _sep, dir = sort_param.partition(':')
|
|
if not dir:
|
|
dir = self._default_sort_dir
|
|
sort_keys.append(self._validate_sort_key(key.strip()))
|
|
sort_dirs.append(self._validate_sort_dir(dir.strip()))
|
|
else:
|
|
# continue with classic syntax
|
|
# NOTE(mfedosin): we have 3 options here:
|
|
# 1. sort_dir wasn't passed: we use default one - 'desc'.
|
|
# 2. Only one sort_dir was passed: use it for every sort_key
|
|
# in the list.
|
|
# 3. Multiple sort_dirs were passed: consistently apply each one to
|
|
# the corresponding sort_key.
|
|
# If number of sort_dirs and sort_keys doesn't match then raise an
|
|
# exception.
|
|
while 'sort_key' in params:
|
|
sort_keys.append(self._validate_sort_key(
|
|
params.pop('sort_key').strip()))
|
|
|
|
while 'sort_dir' in params:
|
|
sort_dirs.append(self._validate_sort_dir(
|
|
params.pop('sort_dir').strip()))
|
|
|
|
if sort_dirs:
|
|
dir_len = len(sort_dirs)
|
|
key_len = len(sort_keys)
|
|
|
|
if dir_len > 1 and dir_len != key_len:
|
|
msg = _('Number of sort dirs does not match the number '
|
|
'of sort keys')
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
|
|
if not sort_keys:
|
|
sort_keys = [self._default_sort_key]
|
|
|
|
if not sort_dirs:
|
|
sort_dirs = [self._default_sort_dir]
|
|
|
|
return sort_keys, sort_dirs
|
|
|
|
def index(self, request):
|
|
params = request.params.copy()
|
|
limit = params.pop('limit', None)
|
|
marker = params.pop('marker', None)
|
|
member_status = params.pop('member_status', 'accepted')
|
|
|
|
# NOTE (flwang) To avoid using comma or any predefined chars to split
|
|
# multiple tags, now we allow user specify multiple 'tag' parameters
|
|
# in URL, such as v2/images?tag=x86&tag=64bit.
|
|
tags = []
|
|
while 'tag' in params:
|
|
tags.append(params.pop('tag').strip())
|
|
|
|
query_params = {
|
|
'filters': self._get_filters(params),
|
|
'member_status': self._validate_member_status(member_status),
|
|
}
|
|
|
|
if marker is not None:
|
|
query_params['marker'] = marker
|
|
|
|
if limit is not None:
|
|
query_params['limit'] = self._validate_limit(limit)
|
|
|
|
if tags:
|
|
query_params['filters']['tags'] = tags
|
|
|
|
# NOTE(mfedosin): param is still called sort_key and sort_dir,
|
|
# instead of sort_keys and sort_dirs respectively.
|
|
# It's done because in v1 it's still a single value.
|
|
|
|
query_params['sort_key'], query_params['sort_dir'] = (
|
|
self._get_sorting_params(params))
|
|
|
|
return query_params
|
|
|
|
def _validate_import_body(self, body):
|
|
# TODO(rosmaita): do schema validation of body instead
|
|
# of this ad-hoc stuff
|
|
try:
|
|
method = body['method']
|
|
except KeyError:
|
|
msg = _("Import request requires a 'method' field.")
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
try:
|
|
method_name = method['name']
|
|
except KeyError:
|
|
msg = _("Import request requires a 'name' field.")
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
if method_name not in CONF.enabled_import_methods:
|
|
msg = _("Unknown import method name '%s'.") % method_name
|
|
raise webob.exc.HTTPBadRequest(explanation=msg)
|
|
|
|
def import_image(self, request):
|
|
body = self._get_request_body(request)
|
|
self._validate_import_body(body)
|
|
return {'body': body}
|
|
|
|
|
|
class ResponseSerializer(wsgi.JSONResponseSerializer):
|
|
def __init__(self, schema=None):
|
|
super(ResponseSerializer, self).__init__()
|
|
self.schema = schema or get_schema()
|
|
|
|
def _get_image_href(self, image, subcollection=''):
|
|
base_href = '/v2/images/%s' % image.image_id
|
|
if subcollection:
|
|
base_href = '%s/%s' % (base_href, subcollection)
|
|
return base_href
|
|
|
|
def _format_image(self, image):
|
|
|
|
def _get_image_locations(image):
|
|
try:
|
|
return list(image.locations)
|
|
except exception.Forbidden:
|
|
return []
|
|
|
|
try:
|
|
image_view = dict(image.extra_properties)
|
|
attributes = ['name', 'disk_format', 'container_format',
|
|
'visibility', 'size', 'virtual_size', 'status',
|
|
'checksum', 'protected', 'min_ram', 'min_disk',
|
|
'owner', 'os_hidden', 'os_hash_algo',
|
|
'os_hash_value']
|
|
for key in attributes:
|
|
image_view[key] = getattr(image, key)
|
|
image_view['id'] = image.image_id
|
|
image_view['created_at'] = timeutils.isotime(image.created_at)
|
|
image_view['updated_at'] = timeutils.isotime(image.updated_at)
|
|
|
|
if CONF.show_multiple_locations:
|
|
locations = _get_image_locations(image)
|
|
if locations:
|
|
image_view['locations'] = []
|
|
for loc in locations:
|
|
tmp = dict(loc)
|
|
tmp.pop('id', None)
|
|
tmp.pop('status', None)
|
|
image_view['locations'].append(tmp)
|
|
else:
|
|
# NOTE (flwang): We will still show "locations": [] if
|
|
# image.locations is None to indicate it's allowed to show
|
|
# locations but it's just non-existent.
|
|
image_view['locations'] = []
|
|
LOG.debug("The 'locations' list of image %s is empty",
|
|
image.image_id)
|
|
|
|
if CONF.show_image_direct_url:
|
|
locations = _get_image_locations(image)
|
|
if locations:
|
|
# Choose best location configured strategy
|
|
l = location_strategy.choose_best_location(locations)
|
|
image_view['direct_url'] = l['url']
|
|
else:
|
|
LOG.debug("The 'locations' list of image %s is empty, "
|
|
"not including 'direct_url' in response",
|
|
image.image_id)
|
|
|
|
image_view['tags'] = list(image.tags)
|
|
image_view['self'] = self._get_image_href(image)
|
|
image_view['file'] = self._get_image_href(image, 'file')
|
|
image_view['schema'] = '/v2/schemas/image'
|
|
image_view = self.schema.filter(image_view) # domain
|
|
|
|
# add store information to image
|
|
if CONF.enabled_backends:
|
|
locations = _get_image_locations(image)
|
|
if locations:
|
|
stores = []
|
|
for loc in locations:
|
|
backend = loc['metadata'].get('backend')
|
|
if backend:
|
|
stores.append(backend)
|
|
|
|
if stores:
|
|
image_view['stores'] = ",".join(stores)
|
|
|
|
return image_view
|
|
except exception.Forbidden as e:
|
|
raise webob.exc.HTTPForbidden(explanation=e.msg)
|
|
|
|
def create(self, response, image):
|
|
response.status_int = http.CREATED
|
|
self.show(response, image)
|
|
response.location = self._get_image_href(image)
|
|
# according to RFC7230, headers should not have empty fields
|
|
# see http://httpwg.org/specs/rfc7230.html#field.components
|
|
if CONF.enabled_import_methods:
|
|
import_methods = ("OpenStack-image-import-methods",
|
|
','.join(CONF.enabled_import_methods))
|
|
response.headerlist.append(import_methods)
|
|
|
|
if CONF.enabled_backends:
|
|
enabled_backends = ("OpenStack-image-store-ids",
|
|
','.join(CONF.enabled_backends.keys()))
|
|
response.headerlist.append(enabled_backends)
|
|
|
|
def show(self, response, image):
|
|
image_view = self._format_image(image)
|
|
body = json.dumps(image_view, ensure_ascii=False)
|
|
response.unicode_body = six.text_type(body)
|
|
response.content_type = 'application/json'
|
|
|
|
def update(self, response, image):
|
|
image_view = self._format_image(image)
|
|
body = json.dumps(image_view, ensure_ascii=False)
|
|
response.unicode_body = six.text_type(body)
|
|
response.content_type = 'application/json'
|
|
|
|
def index(self, response, result):
|
|
params = dict(response.request.params)
|
|
params.pop('marker', None)
|
|
query = urlparse.urlencode(params)
|
|
body = {
|
|
'images': [self._format_image(i) for i in result['images']],
|
|
'first': '/v2/images',
|
|
'schema': '/v2/schemas/images',
|
|
}
|
|
if query:
|
|
body['first'] = '%s?%s' % (body['first'], query)
|
|
if 'next_marker' in result:
|
|
params['marker'] = result['next_marker']
|
|
next_query = urlparse.urlencode(params)
|
|
body['next'] = '/v2/images?%s' % next_query
|
|
response.unicode_body = six.text_type(json.dumps(body,
|
|
ensure_ascii=False))
|
|
response.content_type = 'application/json'
|
|
|
|
def delete(self, response, result):
|
|
response.status_int = http.NO_CONTENT
|
|
|
|
def import_image(self, response, result):
|
|
response.status_int = http.ACCEPTED
|
|
|
|
|
|
def get_base_properties():
|
|
return {
|
|
'id': {
|
|
'type': 'string',
|
|
'description': _('An identifier for the image'),
|
|
'pattern': ('^([0-9a-fA-F]){8}-([0-9a-fA-F]){4}-([0-9a-fA-F]){4}'
|
|
'-([0-9a-fA-F]){4}-([0-9a-fA-F]){12}$'),
|
|
},
|
|
'name': {
|
|
'type': ['null', 'string'],
|
|
'description': _('Descriptive name for the image'),
|
|
'maxLength': 255,
|
|
},
|
|
'status': {
|
|
'type': 'string',
|
|
'readOnly': True,
|
|
'description': _('Status of the image'),
|
|
'enum': ['queued', 'saving', 'active', 'killed',
|
|
'deleted', 'uploading', 'importing',
|
|
'pending_delete', 'deactivated'],
|
|
},
|
|
'visibility': {
|
|
'type': 'string',
|
|
'description': _('Scope of image accessibility'),
|
|
'enum': ['community', 'public', 'private', 'shared'],
|
|
},
|
|
'protected': {
|
|
'type': 'boolean',
|
|
'description': _('If true, image will not be deletable.'),
|
|
},
|
|
'os_hidden': {
|
|
'type': 'boolean',
|
|
'description': _('If true, image will not appear in default '
|
|
'image list response.'),
|
|
},
|
|
'checksum': {
|
|
'type': ['null', 'string'],
|
|
'readOnly': True,
|
|
'description': _('md5 hash of image contents.'),
|
|
'maxLength': 32,
|
|
},
|
|
'os_hash_algo': {
|
|
'type': ['null', 'string'],
|
|
'readOnly': True,
|
|
'description': _('Algorithm to calculate the os_hash_value'),
|
|
'maxLength': 64,
|
|
},
|
|
'os_hash_value': {
|
|
'type': ['null', 'string'],
|
|
'readOnly': True,
|
|
'description': _('Hexdigest of the image contents using the '
|
|
'algorithm specified by the os_hash_algo'),
|
|
'maxLength': 128,
|
|
},
|
|
'owner': {
|
|
'type': ['null', 'string'],
|
|
'description': _('Owner of the image'),
|
|
'maxLength': 255,
|
|
},
|
|
'size': {
|
|
'type': ['null', 'integer'],
|
|
'readOnly': True,
|
|
'description': _('Size of image file in bytes'),
|
|
},
|
|
'virtual_size': {
|
|
'type': ['null', 'integer'],
|
|
'readOnly': True,
|
|
'description': _('Virtual size of image in bytes'),
|
|
},
|
|
'container_format': {
|
|
'type': ['null', 'string'],
|
|
'description': _('Format of the container'),
|
|
'enum': [None] + CONF.image_format.container_formats,
|
|
},
|
|
'disk_format': {
|
|
'type': ['null', 'string'],
|
|
'description': _('Format of the disk'),
|
|
'enum': [None] + CONF.image_format.disk_formats,
|
|
},
|
|
'created_at': {
|
|
'type': 'string',
|
|
'readOnly': True,
|
|
'description': _('Date and time of image registration'
|
|
),
|
|
# TODO(bcwaldon): our jsonschema library doesn't seem to like the
|
|
# format attribute, figure out why!
|
|
# 'format': 'date-time',
|
|
},
|
|
'updated_at': {
|
|
'type': 'string',
|
|
'readOnly': True,
|
|
'description': _('Date and time of the last image modification'
|
|
),
|
|
# 'format': 'date-time',
|
|
},
|
|
'tags': {
|
|
'type': 'array',
|
|
'description': _('List of strings related to the image'),
|
|
'items': {
|
|
'type': 'string',
|
|
'maxLength': 255,
|
|
},
|
|
},
|
|
'direct_url': {
|
|
'type': 'string',
|
|
'readOnly': True,
|
|
'description': _('URL to access the image file kept in external '
|
|
'store'),
|
|
},
|
|
'min_ram': {
|
|
'type': 'integer',
|
|
'description': _('Amount of ram (in MB) required to boot image.'),
|
|
},
|
|
'min_disk': {
|
|
'type': 'integer',
|
|
'description': _('Amount of disk space (in GB) required to boot '
|
|
'image.'),
|
|
},
|
|
'self': {
|
|
'type': 'string',
|
|
'readOnly': True,
|
|
'description': _('An image self url'),
|
|
},
|
|
'file': {
|
|
'type': 'string',
|
|
'readOnly': True,
|
|
'description': _('An image file url'),
|
|
},
|
|
'backend': {
|
|
'type': 'string',
|
|
'readOnly': True,
|
|
'description': _('Backend store to upload image to'),
|
|
},
|
|
'schema': {
|
|
'type': 'string',
|
|
'readOnly': True,
|
|
'description': _('An image schema url'),
|
|
},
|
|
'locations': {
|
|
'type': 'array',
|
|
'items': {
|
|
'type': 'object',
|
|
'properties': {
|
|
'url': {
|
|
'type': 'string',
|
|
'maxLength': 255,
|
|
},
|
|
'metadata': {
|
|
'type': 'object',
|
|
},
|
|
'validation_data': {
|
|
'description': _(
|
|
'Values to be used to populate the corresponding '
|
|
'image properties. If the image status is not '
|
|
'\'queued\', values must exactly match those '
|
|
'already contained in the image properties.'
|
|
),
|
|
'type': 'object',
|
|
'writeOnly': True,
|
|
'additionalProperties': False,
|
|
'properties': {
|
|
'checksum': {
|
|
'type': 'string',
|
|
'minLength': 32,
|
|
'maxLength': 32,
|
|
},
|
|
'os_hash_algo': {
|
|
'type': 'string',
|
|
'maxLength': 64,
|
|
},
|
|
'os_hash_value': {
|
|
'type': 'string',
|
|
'maxLength': 128,
|
|
},
|
|
},
|
|
'required': [
|
|
'os_hash_algo',
|
|
'os_hash_value',
|
|
],
|
|
},
|
|
},
|
|
'required': ['url', 'metadata'],
|
|
},
|
|
'description': _('A set of URLs to access the image file kept in '
|
|
'external store'),
|
|
},
|
|
}
|
|
|
|
|
|
def _get_base_links():
|
|
return [
|
|
{'rel': 'self', 'href': '{self}'},
|
|
{'rel': 'enclosure', 'href': '{file}'},
|
|
{'rel': 'describedby', 'href': '{schema}'},
|
|
]
|
|
|
|
|
|
def get_schema(custom_properties=None):
|
|
properties = get_base_properties()
|
|
links = _get_base_links()
|
|
if CONF.allow_additional_image_properties:
|
|
schema = glance.schema.PermissiveSchema('image', properties, links)
|
|
else:
|
|
schema = glance.schema.Schema('image', properties)
|
|
|
|
if custom_properties:
|
|
for property_value in custom_properties.values():
|
|
property_value['is_base'] = False
|
|
schema.merge_properties(custom_properties)
|
|
return schema
|
|
|
|
|
|
def get_collection_schema(custom_properties=None):
|
|
image_schema = get_schema(custom_properties)
|
|
return glance.schema.CollectionSchema('images', image_schema)
|
|
|
|
|
|
def load_custom_properties():
|
|
"""Find the schema properties files and load them into a dict."""
|
|
filename = 'schema-image.json'
|
|
match = CONF.find_file(filename)
|
|
if match:
|
|
with open(match, 'r') as schema_file:
|
|
schema_data = schema_file.read()
|
|
return json.loads(schema_data)
|
|
else:
|
|
msg = (_LW('Could not find schema properties file %s. Continuing '
|
|
'without custom properties') % filename)
|
|
LOG.warn(msg)
|
|
return {}
|
|
|
|
|
|
def create_resource(custom_properties=None):
|
|
"""Images resource factory method"""
|
|
schema = get_schema(custom_properties)
|
|
deserializer = RequestDeserializer(schema)
|
|
serializer = ResponseSerializer(schema)
|
|
controller = ImagesController()
|
|
return wsgi.Resource(controller, deserializer, serializer)
|