168 lines
5.5 KiB
Python
168 lines
5.5 KiB
Python
# Copyright 2016 Huawei Technologies Co.,LTD.
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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 pecan
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from pecan import rest
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from six.moves import http_client
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import wsme
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from wsme import types as wtypes
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from nimble.api.controllers import base
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from nimble.api.controllers import link
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from nimble.api.controllers.v1 import types
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from nimble.api import expose
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from nimble import objects
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class Instance(base.APIBase):
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"""API representation of a instance.
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This class enforces type checking and value constraints, and converts
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between the internal object model and the API representation of
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a instance.
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"""
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id = wsme.wsattr(wtypes.IntegerType(minimum=1))
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"""The ID of the instance"""
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uuid = types.uuid
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"""The UUID of the instance"""
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name = wtypes.text
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"""The name of the instance"""
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description = wtypes.text
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"""The description of the instance"""
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status = wtypes.text
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"""The status of the instance"""
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power_state = wtypes.text
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"""The power state of the instance"""
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task_state = wtypes.text
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"""The task state of the instance"""
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availability_zone = wtypes.text
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"""The availability zone of the instance"""
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instance_type_id = wsme.wsattr(wtypes.IntegerType(minimum=1))
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"""The instance type ID of the instance"""
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image_uuid = types.uuid
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"""The image UUID of the instance"""
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network_info = {wtypes.text: types.jsontype}
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"""The network information of the instance"""
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links = wsme.wsattr([link.Link], readonly=True)
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"""A list containing a self link"""
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def __init__(self, **kwargs):
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self.fields = []
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for field in objects.Instance.fields:
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# Skip fields we do not expose.
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if not hasattr(self, field):
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continue
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self.fields.append(field)
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setattr(self, field, kwargs.get(field, wtypes.Unset))
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@classmethod
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def convert_with_links(cls, rpc_instance):
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instance = Instance(**rpc_instance.as_dict())
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url = pecan.request.public_url
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instance.links = [link.Link.make_link('self',
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url,
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'instance', instance.uuid),
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link.Link.make_link('bookmark',
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url,
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'instance', instance.uuid,
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bookmark=True)
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]
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return instance
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class InstanceCollection(base.APIBase):
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"""API representation of a collection of instance."""
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instances = [Instance]
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"""A list containing instance objects"""
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@staticmethod
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def convert_with_links(instances, url=None, **kwargs):
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collection = InstanceCollection()
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collection.instances = [Instance.convert_with_links(inst)
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for inst in instances]
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return collection
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class InstanceActionController(rest.RestController):
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_custom_actions = {
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'power': ['PUT'],
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}
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class InstanceController(rest.RestController):
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"""REST controller for Instance."""
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action = InstanceActionController()
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@expose.expose(InstanceCollection)
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def get_all(self):
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"""Retrieve a list of instance."""
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instances = objects.Instance.list(pecan.request.context)
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return InstanceCollection.convert_with_links(instances)
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@expose.expose(Instance, types.uuid)
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def get_one(self, instance_uuid):
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"""Retrieve information about the given instance.
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:param instance_uuid: UUID of a instance.
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"""
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rpc_instance = objects.Instance.get(pecan.request.context,
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instance_uuid)
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return Instance.convert_with_links(rpc_instance)
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@expose.expose(Instance, body=Instance, status_code=http_client.CREATED)
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def post(self, instance):
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"""Create a new instance.
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:param instance: a instance within the request body.
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"""
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instance_obj = objects.Instance(pecan.request.context,
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**instance.as_dict())
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instance_obj.create()
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# Set the HTTP Location Header
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pecan.response.location = link.build_url('instance', instance_obj.uuid)
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pecan.request.rpcapi.create_instance(pecan.request.context,
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instance_obj)
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instance_obj.status = 'building'
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instance_obj.save()
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return Instance.convert_with_links(instance_obj)
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@expose.expose(None, types.uuid, status_code=http_client.NO_CONTENT)
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def delete(self, instance_uuid):
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"""Delete a instance.
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:param instance_uuid: UUID of a instance.
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"""
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rpc_instance = objects.Instance.get(pecan.request.context,
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instance_uuid)
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pecan.request.rpcapi.delete_instance(pecan.request.context,
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rpc_instance)
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