160 lines
6.0 KiB
Python
160 lines
6.0 KiB
Python
# Copyright 2011 University of Southern California
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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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"""The instance type extra specs 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.compute import flavors
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from nova import db
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from nova import exception
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from nova.openstack.common.gettextutils import _
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from nova import utils
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authorize = extensions.extension_authorizer('compute', 'flavorextraspecs')
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class ExtraSpecsTemplate(xmlutil.TemplateBuilder):
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def construct(self):
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extra_specs_dict = xmlutil.make_flat_dict('extra_specs', colon_ns=True)
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return xmlutil.MasterTemplate(extra_specs_dict, 1)
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class ExtraSpecTemplate(xmlutil.TemplateBuilder):
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def construct(self):
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sel = xmlutil.Selector(xmlutil.get_items, 0)
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root = xmlutil.TemplateElement('extra_spec', selector=sel)
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root.set('key', 0)
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root.text = 1
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return xmlutil.MasterTemplate(root, 1)
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class FlavorExtraSpecsController(object):
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"""The flavor extra specs API controller for the OpenStack API."""
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def _get_extra_specs(self, context, flavor_id):
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extra_specs = db.flavor_extra_specs_get(context, flavor_id)
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return dict(extra_specs=extra_specs)
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def _check_body(self, body):
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if body is None or body == "":
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expl = _('No Request Body')
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raise exc.HTTPBadRequest(explanation=expl)
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def _check_extra_specs(self, specs):
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if type(specs) is not dict:
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msg = _('Bad extra_specs provided')
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raise exc.HTTPBadRequest(explanation=msg)
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try:
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flavors.validate_extra_spec_keys(specs.keys())
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except exception.InvalidInput as error:
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raise exc.HTTPBadRequest(explanation=error.format_message())
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for key, value in specs.iteritems():
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try:
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utils.check_string_length(key, 'extra_specs key',
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min_length=1, max_length=255)
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utils.check_string_length(value, 'extra_specs value',
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max_length=255)
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except exception.InvalidInput as error:
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raise exc.HTTPBadRequest(explanation=error.format_message())
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@wsgi.serializers(xml=ExtraSpecsTemplate)
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def index(self, req, flavor_id):
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"""Returns the list of extra specs for a given flavor."""
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context = req.environ['nova.context']
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authorize(context, action='index')
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return self._get_extra_specs(context, flavor_id)
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@wsgi.serializers(xml=ExtraSpecsTemplate)
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def create(self, req, flavor_id, body):
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context = req.environ['nova.context']
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authorize(context, action='create')
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self._check_body(body)
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specs = body.get('extra_specs')
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self._check_extra_specs(specs)
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try:
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db.flavor_extra_specs_update_or_create(context,
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flavor_id,
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specs)
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except exception.MetadataLimitExceeded as error:
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raise exc.HTTPBadRequest(explanation=error.format_message())
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return body
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@wsgi.serializers(xml=ExtraSpecTemplate)
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def update(self, req, flavor_id, id, body):
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context = req.environ['nova.context']
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authorize(context, action='update')
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self._check_extra_specs(body)
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if id not in body:
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expl = _('Request body and URI mismatch')
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raise exc.HTTPBadRequest(explanation=expl)
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if len(body) > 1:
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expl = _('Request body contains too many items')
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raise exc.HTTPBadRequest(explanation=expl)
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try:
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db.flavor_extra_specs_update_or_create(context,
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flavor_id,
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body)
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except exception.MetadataLimitExceeded as error:
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raise exc.HTTPBadRequest(explanation=error.format_message())
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return body
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@wsgi.serializers(xml=ExtraSpecTemplate)
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def show(self, req, flavor_id, id):
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"""Return a single extra spec item."""
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context = req.environ['nova.context']
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authorize(context, action='show')
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try:
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extra_spec = db.flavor_extra_specs_get_item(context,
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flavor_id, id)
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return extra_spec
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except exception.FlavorExtraSpecsNotFound:
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raise exc.HTTPNotFound()
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def delete(self, req, flavor_id, id):
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"""Deletes an existing extra spec."""
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context = req.environ['nova.context']
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authorize(context, action='delete')
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try:
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db.flavor_extra_specs_delete(context, flavor_id, id)
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except exception.FlavorExtraSpecsNotFound as e:
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raise exc.HTTPNotFound(explanation=e.format_message())
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class Flavorextraspecs(extensions.ExtensionDescriptor):
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"""Instance type (flavor) extra specs."""
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name = "FlavorExtraSpecs"
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alias = "os-flavor-extra-specs"
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namespace = ("http://docs.openstack.org/compute/ext/"
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"flavor_extra_specs/api/v1.1")
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updated = "2011-06-23T00:00:00+00:00"
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def get_resources(self):
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resources = []
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res = extensions.ResourceExtension(
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'os-extra_specs',
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FlavorExtraSpecsController(),
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parent=dict(member_name='flavor', collection_name='flavors'))
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resources.append(res)
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return resources
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