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OpenStack Study: flavor_manage.py

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# Licensed under the Apache License, Version 2.0 (the "License"); you may

# not use this file except in compliance with the License. You may obtain

# a copy of the License at

#

# http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT

# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the

# License for the specific language governing permissions and limitations

# under the License.

import webob

from nova.api.openstack.compute.views import flavors as flavors_view

from nova.api.openstack import extensions

from nova.api.openstack import wsgi

from nova.compute import flavors

from nova import exception

ALIAS = "flavor-manage"

authorize = extensions.extension_authorizer('compute', 'v3:' + ALIAS)

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class FlavorManageController(wsgi.Controller):

"""The Flavor Lifecycle API controller for the OpenStack API."""

_view_builder_class = flavors_view.V3ViewBuilder

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    def __init__(self):

        super(FlavorManageController, self).__init__()

    @wsgi.action("delete")

    @extensions.expected_errors((404))

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    def _delete(self, req, id):

        context = req.environ['nova.context']

        authorize(context)

        try:

            flavor = flavors.get_flavor_by_flavor_id(

                    id, ctxt=context, read_deleted="no")

        except exception.FlavorNotFound as e:

            raise webob.exc.HTTPNotFound(explanation=e.format_message())

        flavors.destroy(flavor['name'])

        return webob.Response(status_int=204)

    @wsgi.response(201)

    @wsgi.action("create")

    @extensions.expected_errors((400, 409))

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    def _create(self, req, body):

        context = req.environ['nova.context']

        authorize(context)

        if not self.is_valid_body(body, 'flavor'):

            raise webob.exc.HTTPBadRequest('Invalid request body ')

        vals = body['flavor']

        name = vals.get('name')

        flavorid = vals.get('id')

        memory = vals.get('ram')

        vcpus = vals.get('vcpus')

        root_gb = vals.get('disk')

        ephemeral_gb = vals.get('ephemeral', 0)

        swap = vals.get('swap', 0)

        rxtx_factor = vals.get('os-flavor-rxtx:rxtx_factor', 1.0)

        is_public = vals.get('flavor-access:is_public', True)

        try:

            flavor = flavors.create(name, memory, vcpus, root_gb,

                                    ephemeral_gb=ephemeral_gb,

                                    flavorid=flavorid, swap=swap,

                                    rxtx_factor=rxtx_factor,

                                    is_public=is_public)

            if not flavor['is_public']:

                flavors.add_flavor_access(flavor['flavorid'],

                                          context.project_id, context)

            req.cache_db_flavor(flavor)

        except (exception.FlavorExists,

                exception.FlavorIdExists) as err:

            raise webob.exc.HTTPConflict(explanation=err.format_message())

        except exception.InvalidInput as exc:

            raise webob.exc.HTTPBadRequest(explanation=exc.format_message())

        return self._view_builder.show(req, flavor)

**** CubicPower OpenStack Study ****

class FlavorManage(extensions.V3APIExtensionBase):

"""Flavor create/delete API support."""

name = "FlavorManage"

alias = ALIAS

version = 1

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    def get_controller_extensions(self):

        controller = FlavorManageController()

        extension = extensions.ControllerExtension(self, 'flavors', controller)

        return [extension]

**** CubicPower OpenStack Study ****

    def get_resources(self):

        return []