152 lines
5.3 KiB
Python
152 lines
5.3 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2010-2011 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 os.path
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from nova.api.openstack import common
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from nova.image import glance
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class ViewBuilder(common.ViewBuilder):
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_collection_name = "images"
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def basic(self, request, image):
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"""Return a dictionary with basic image attributes."""
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return {
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"image": {
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"id": image.get("id"),
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"name": image.get("name"),
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"links": self._get_links(request,
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image["id"],
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self._collection_name),
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},
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}
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def show(self, request, image):
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"""Return a dictionary with image details."""
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image_dict = {
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"id": image.get("id"),
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"name": image.get("name"),
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"minRam": int(image.get("min_ram") or 0),
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"minDisk": int(image.get("min_disk") or 0),
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"metadata": image.get("properties", {}),
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"created": self._format_date(image.get("created_at")),
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"updated": self._format_date(image.get("updated_at")),
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"status": self._get_status(image),
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"progress": self._get_progress(image),
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"links": self._get_links(request,
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image["id"],
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self._collection_name),
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}
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instance_uuid = image.get("properties", {}).get("instance_uuid")
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if instance_uuid is not None:
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server_ref = self._get_href_link(request, instance_uuid, 'servers')
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image_dict["server"] = {
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"id": instance_uuid,
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"links": [{
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"rel": "self",
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"href": server_ref,
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},
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{
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"rel": "bookmark",
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"href": self._get_bookmark_link(request,
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instance_uuid,
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'servers'),
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}],
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}
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return dict(image=image_dict)
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def detail(self, request, images):
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"""Show a list of images with details."""
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list_func = self.show
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return self._list_view(list_func, request, images)
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def index(self, request, images):
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"""Show a list of images with basic attributes."""
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list_func = self.basic
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return self._list_view(list_func, request, images)
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def _list_view(self, list_func, request, images):
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"""Provide a view for a list of images."""
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image_list = [list_func(request, image)["image"] for image in images]
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images_links = self._get_collection_links(request,
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images,
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self._collection_name)
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images_dict = dict(images=image_list)
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if images_links:
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images_dict["images_links"] = images_links
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return images_dict
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def _get_links(self, request, identifier, collection_name):
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"""Return a list of links for this image."""
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return [{
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"rel": "self",
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"href": self._get_href_link(request, identifier, collection_name),
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},
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{
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"rel": "bookmark",
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"href": self._get_bookmark_link(request,
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identifier,
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collection_name),
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},
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{
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"rel": "alternate",
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"type": "application/vnd.openstack.image",
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"href": self._get_alternate_link(request, identifier),
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}]
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def _get_alternate_link(self, request, identifier):
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"""Create an alternate link for a specific image id."""
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glance_url = glance.generate_glance_url()
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glance_url = self._update_glance_link_prefix(glance_url)
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return os.path.join(glance_url,
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request.environ["nova.context"].project_id,
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self._collection_name,
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str(identifier))
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@staticmethod
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def _format_date(date_string):
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"""Return standard format for given date."""
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if date_string is not None:
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return date_string.strftime('%Y-%m-%dT%H:%M:%SZ')
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@staticmethod
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def _get_status(image):
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"""Update the status field to standardize format."""
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return {
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'active': 'ACTIVE',
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'queued': 'SAVING',
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'saving': 'SAVING',
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'deleted': 'DELETED',
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'pending_delete': 'DELETED',
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'killed': 'ERROR',
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}.get(image.get("status"), 'UNKNOWN')
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@staticmethod
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def _get_progress(image):
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return {
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"queued": 25,
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"saving": 50,
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"active": 100,
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}.get(image.get("status"), 0)
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