157 lines
6.1 KiB
Python
157 lines
6.1 KiB
Python
# Copyright 2011 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 six
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from webob import exc
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from nova.api.openstack import common
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from nova.api.openstack.compute.schemas import image_metadata
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from nova.api.openstack import extensions
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from nova.api.openstack import wsgi
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from nova.api import validation
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from nova import exception
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from nova.i18n import _
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import nova.image
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ALIAS = 'image-metadata'
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class ImageMetadataController(wsgi.Controller):
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"""The image metadata API controller for the OpenStack API."""
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def __init__(self):
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self.image_api = nova.image.API()
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def _get_image(self, context, image_id):
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try:
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return self.image_api.get(context, image_id)
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except exception.ImageNotAuthorized as e:
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raise exc.HTTPForbidden(explanation=e.format_message())
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except exception.ImageNotFound:
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msg = _("Image not found.")
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raise exc.HTTPNotFound(explanation=msg)
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@extensions.expected_errors((403, 404))
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def index(self, req, image_id):
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"""Returns the list of metadata for a given instance."""
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context = req.environ['nova.context']
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metadata = self._get_image(context, image_id)['properties']
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return dict(metadata=metadata)
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@extensions.expected_errors((403, 404))
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def show(self, req, image_id, id):
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context = req.environ['nova.context']
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metadata = self._get_image(context, image_id)['properties']
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if id in metadata:
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return {'meta': {id: metadata[id]}}
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else:
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raise exc.HTTPNotFound()
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@extensions.expected_errors((400, 403, 404, 413))
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@validation.schema(image_metadata.create)
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def create(self, req, image_id, body):
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context = req.environ['nova.context']
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image = self._get_image(context, image_id)
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for key, value in six.iteritems(body['metadata']):
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image['properties'][key] = value
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common.check_img_metadata_properties_quota(context,
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image['properties'])
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try:
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image = self.image_api.update(context, image_id, image, data=None,
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purge_props=True)
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except exception.ImageNotAuthorized as e:
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raise exc.HTTPForbidden(explanation=e.format_message())
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return dict(metadata=image['properties'])
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@extensions.expected_errors((400, 403, 404, 413))
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@validation.schema(image_metadata.update)
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def update(self, req, image_id, id, body):
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context = req.environ['nova.context']
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meta = body['meta']
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if id not in meta:
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expl = _('Request body and URI mismatch')
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raise exc.HTTPBadRequest(explanation=expl)
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image = self._get_image(context, image_id)
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image['properties'][id] = meta[id]
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common.check_img_metadata_properties_quota(context,
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image['properties'])
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try:
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self.image_api.update(context, image_id, image, data=None,
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purge_props=True)
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except exception.ImageNotAuthorized as e:
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raise exc.HTTPForbidden(explanation=e.format_message())
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return dict(meta=meta)
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@extensions.expected_errors((400, 403, 404, 413))
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@validation.schema(image_metadata.update_all)
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def update_all(self, req, image_id, body):
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context = req.environ['nova.context']
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image = self._get_image(context, image_id)
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metadata = body['metadata']
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common.check_img_metadata_properties_quota(context, metadata)
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image['properties'] = metadata
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try:
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self.image_api.update(context, image_id, image, data=None,
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purge_props=True)
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except exception.ImageNotAuthorized as e:
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raise exc.HTTPForbidden(explanation=e.format_message())
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return dict(metadata=metadata)
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@extensions.expected_errors((403, 404))
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@wsgi.response(204)
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def delete(self, req, image_id, id):
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context = req.environ['nova.context']
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image = self._get_image(context, image_id)
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if id not in image['properties']:
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msg = _("Invalid metadata key")
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raise exc.HTTPNotFound(explanation=msg)
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image['properties'].pop(id)
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try:
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self.image_api.update(context, image_id, image, data=None,
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purge_props=True)
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except exception.ImageNotAuthorized as e:
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raise exc.HTTPForbidden(explanation=e.format_message())
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class ImageMetadata(extensions.V21APIExtensionBase):
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"""Image Metadata API."""
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name = "ImageMetadata"
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alias = ALIAS
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version = 1
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def get_resources(self):
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parent = {'member_name': 'image',
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'collection_name': 'images'}
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resources = [extensions.ResourceExtension('metadata',
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ImageMetadataController(),
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member_name='image_meta',
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parent=parent,
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custom_routes_fn=
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self.image_metadata_map
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)]
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return resources
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def get_controller_extensions(self):
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return []
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def image_metadata_map(self, mapper, wsgi_resource):
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mapper.connect("metadata",
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"/{project_id}/images/{image_id}/metadata",
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controller=wsgi_resource,
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action='update_all', conditions={"method": ['PUT']})
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