183c3d5f07
The most of objects are removed from the extensions module. The last thing is the expected_errors decorator, but that decorator is nothing about the extensions. So move the decorator to the wsgi module where is the place put the other decorator also. Then we can remove the extensions module entirely. Partial implement bp api-extensions-merge-queens Change-Id: I4802c5b38001a756448d4feb9ca336908821f591
154 lines
5.4 KiB
Python
154 lines
5.4 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 webob.exc
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from nova.api.openstack.api_version_request \
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import MAX_PROXY_API_SUPPORT_VERSION
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from nova.api.openstack import common
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from nova.api.openstack.compute.views import images as views_images
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from nova.api.openstack import wsgi
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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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import nova.utils
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SUPPORTED_FILTERS = {
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'name': 'name',
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'status': 'status',
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'changes-since': 'changes-since',
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'server': 'property-instance_uuid',
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'type': 'property-image_type',
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'minRam': 'min_ram',
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'minDisk': 'min_disk',
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}
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class ImagesController(wsgi.Controller):
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"""Base controller for retrieving/displaying images."""
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_view_builder_class = views_images.ViewBuilder
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def __init__(self, **kwargs):
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super(ImagesController, self).__init__(**kwargs)
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self._image_api = nova.image.API()
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def _get_filters(self, req):
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"""Return a dictionary of query param filters from the request.
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:param req: the Request object coming from the wsgi layer
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:retval a dict of key/value filters
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"""
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filters = {}
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for param in req.params:
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if param in SUPPORTED_FILTERS or param.startswith('property-'):
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# map filter name or carry through if property-*
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filter_name = SUPPORTED_FILTERS.get(param, param)
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filters[filter_name] = req.params.get(param)
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# ensure server filter is the instance uuid
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filter_name = 'property-instance_uuid'
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try:
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filters[filter_name] = filters[filter_name].rsplit('/', 1)[1]
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except (AttributeError, IndexError, KeyError):
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pass
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filter_name = 'status'
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if filter_name in filters:
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# The Image API expects us to use lowercase strings for status
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filters[filter_name] = filters[filter_name].lower()
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return filters
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@wsgi.Controller.api_version("2.1", MAX_PROXY_API_SUPPORT_VERSION)
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@wsgi.expected_errors(404)
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def show(self, req, id):
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"""Return detailed information about a specific image.
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:param req: `wsgi.Request` object
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:param id: Image identifier
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"""
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context = req.environ['nova.context']
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try:
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image = self._image_api.get(context, id)
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except (exception.ImageNotFound, exception.InvalidImageRef):
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explanation = _("Image not found.")
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raise webob.exc.HTTPNotFound(explanation=explanation)
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req.cache_db_items('images', [image], 'id')
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return self._view_builder.show(req, image)
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@wsgi.Controller.api_version("2.1", MAX_PROXY_API_SUPPORT_VERSION)
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@wsgi.expected_errors((403, 404))
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@wsgi.response(204)
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def delete(self, req, id):
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"""Delete an image, if allowed.
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:param req: `wsgi.Request` object
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:param id: Image identifier (integer)
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"""
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context = req.environ['nova.context']
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try:
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self._image_api.delete(context, id)
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except exception.ImageNotFound:
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explanation = _("Image not found.")
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raise webob.exc.HTTPNotFound(explanation=explanation)
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except exception.ImageNotAuthorized:
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# The image service raises this exception on delete if glanceclient
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# raises HTTPForbidden.
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explanation = _("You are not allowed to delete the image.")
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raise webob.exc.HTTPForbidden(explanation=explanation)
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@wsgi.Controller.api_version("2.1", MAX_PROXY_API_SUPPORT_VERSION)
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@wsgi.expected_errors(400)
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def index(self, req):
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"""Return an index listing of images available to the request.
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:param req: `wsgi.Request` object
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"""
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context = req.environ['nova.context']
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filters = self._get_filters(req)
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page_params = common.get_pagination_params(req)
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try:
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images = self._image_api.get_all(context, filters=filters,
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**page_params)
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except exception.Invalid as e:
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raise webob.exc.HTTPBadRequest(explanation=e.format_message())
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return self._view_builder.index(req, images)
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@wsgi.Controller.api_version("2.1", MAX_PROXY_API_SUPPORT_VERSION)
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@wsgi.expected_errors(400)
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def detail(self, req):
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"""Return a detailed index listing of images available to the request.
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:param req: `wsgi.Request` object.
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"""
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context = req.environ['nova.context']
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filters = self._get_filters(req)
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page_params = common.get_pagination_params(req)
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try:
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images = self._image_api.get_all(context, filters=filters,
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**page_params)
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except exception.Invalid as e:
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raise webob.exc.HTTPBadRequest(explanation=e.format_message())
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req.cache_db_items('images', images, 'id')
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return self._view_builder.detail(req, images)
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