189 lines
6.6 KiB
Python
189 lines
6.6 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 OpenStack Foundation
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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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"""Disk Config extension."""
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from webob import exc
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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.openstack import xmlutil
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from nova.openstack.common.gettextutils import _
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from nova.openstack.common import strutils
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ALIAS = 'OS-DCF'
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XMLNS_DCF = "http://docs.openstack.org/compute/ext/disk_config/api/v1.1"
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API_DISK_CONFIG = "%s:diskConfig" % ALIAS
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INTERNAL_DISK_CONFIG = "auto_disk_config"
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authorize = extensions.soft_extension_authorizer('compute', 'disk_config')
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def disk_config_to_api(value):
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return 'AUTO' if value else 'MANUAL'
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def disk_config_from_api(value):
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if value == 'AUTO':
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return True
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elif value == 'MANUAL':
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return False
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else:
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msg = _("%s must be either 'MANUAL' or 'AUTO'.") % API_DISK_CONFIG
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raise exc.HTTPBadRequest(explanation=msg)
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class ImageDiskConfigTemplate(xmlutil.TemplateBuilder):
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def construct(self):
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root = xmlutil.TemplateElement('image')
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root.set('{%s}diskConfig' % XMLNS_DCF, API_DISK_CONFIG)
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return xmlutil.SlaveTemplate(root, 1, nsmap={ALIAS: XMLNS_DCF})
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class ImagesDiskConfigTemplate(xmlutil.TemplateBuilder):
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def construct(self):
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root = xmlutil.TemplateElement('images')
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elem = xmlutil.SubTemplateElement(root, 'image', selector='images')
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elem.set('{%s}diskConfig' % XMLNS_DCF, API_DISK_CONFIG)
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return xmlutil.SlaveTemplate(root, 1, nsmap={ALIAS: XMLNS_DCF})
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class ImageDiskConfigController(wsgi.Controller):
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def _add_disk_config(self, context, images):
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for image in images:
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metadata = image['metadata']
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if INTERNAL_DISK_CONFIG in metadata:
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raw_value = metadata[INTERNAL_DISK_CONFIG]
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value = strutils.bool_from_string(raw_value)
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image[API_DISK_CONFIG] = disk_config_to_api(value)
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@wsgi.extends
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def show(self, req, resp_obj, id):
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context = req.environ['nova.context']
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if 'image' in resp_obj.obj and authorize(context):
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resp_obj.attach(xml=ImageDiskConfigTemplate())
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image = resp_obj.obj['image']
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self._add_disk_config(context, [image])
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@wsgi.extends
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def detail(self, req, resp_obj):
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context = req.environ['nova.context']
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if 'images' in resp_obj.obj and authorize(context):
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resp_obj.attach(xml=ImagesDiskConfigTemplate())
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images = resp_obj.obj['images']
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self._add_disk_config(context, images)
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class ServerDiskConfigTemplate(xmlutil.TemplateBuilder):
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def construct(self):
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root = xmlutil.TemplateElement('server')
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root.set('{%s}diskConfig' % XMLNS_DCF, API_DISK_CONFIG)
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return xmlutil.SlaveTemplate(root, 1, nsmap={ALIAS: XMLNS_DCF})
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class ServersDiskConfigTemplate(xmlutil.TemplateBuilder):
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def construct(self):
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root = xmlutil.TemplateElement('servers')
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elem = xmlutil.SubTemplateElement(root, 'server', selector='servers')
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elem.set('{%s}diskConfig' % XMLNS_DCF, API_DISK_CONFIG)
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return xmlutil.SlaveTemplate(root, 1, nsmap={ALIAS: XMLNS_DCF})
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class ServerDiskConfigController(wsgi.Controller):
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def _add_disk_config(self, req, servers):
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for server in servers:
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db_server = req.get_db_instance(server['id'])
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# server['id'] is guaranteed to be in the cache due to
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# the core API adding it in its 'show'/'detail' methods.
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value = db_server.get(INTERNAL_DISK_CONFIG)
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server[API_DISK_CONFIG] = disk_config_to_api(value)
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def _show(self, req, resp_obj):
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if 'server' in resp_obj.obj:
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resp_obj.attach(xml=ServerDiskConfigTemplate())
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server = resp_obj.obj['server']
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self._add_disk_config(req, [server])
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@wsgi.extends
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def show(self, req, resp_obj, id):
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context = req.environ['nova.context']
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if authorize(context):
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self._show(req, resp_obj)
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@wsgi.extends
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def detail(self, req, resp_obj):
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context = req.environ['nova.context']
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if 'servers' in resp_obj.obj and authorize(context):
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resp_obj.attach(xml=ServersDiskConfigTemplate())
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servers = resp_obj.obj['servers']
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self._add_disk_config(req, servers)
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def _set_disk_config(self, dict_):
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if API_DISK_CONFIG in dict_:
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api_value = dict_[API_DISK_CONFIG]
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internal_value = disk_config_from_api(api_value)
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dict_[INTERNAL_DISK_CONFIG] = internal_value
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@wsgi.extends
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def create(self, req, body):
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context = req.environ['nova.context']
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if authorize(context):
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if 'server' in body:
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self._set_disk_config(body['server'])
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resp_obj = (yield)
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self._show(req, resp_obj)
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@wsgi.extends
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def update(self, req, id, body):
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context = req.environ['nova.context']
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if authorize(context):
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if 'server' in body:
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self._set_disk_config(body['server'])
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resp_obj = (yield)
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self._show(req, resp_obj)
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@wsgi.extends(action='rebuild')
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def _action_rebuild(self, req, id, body):
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context = req.environ['nova.context']
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if authorize(context):
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self._set_disk_config(body['rebuild'])
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resp_obj = (yield)
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self._show(req, resp_obj)
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@wsgi.extends(action='resize')
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def _action_resize(self, req, id, body):
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context = req.environ['nova.context']
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if authorize(context):
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self._set_disk_config(body['resize'])
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yield
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class Disk_config(extensions.ExtensionDescriptor):
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"""Disk Management Extension."""
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name = "DiskConfig"
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alias = ALIAS
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namespace = XMLNS_DCF
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updated = "2011-09-27T00:00:00+00:00"
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def get_controller_extensions(self):
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servers_extension = extensions.ControllerExtension(
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self, 'servers', ServerDiskConfigController())
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images_extension = extensions.ControllerExtension(
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self, 'images', ImageDiskConfigController())
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return [servers_extension, images_extension]
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