269 lines
9.6 KiB
Python
269 lines
9.6 KiB
Python
# Copyright 2013 UnitedStack Inc.
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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 datetime
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import pecan
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from pecan import rest
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import wsme
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from wsme import types as wtypes
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import wsmeext.pecan as wsme_pecan
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from magnum.api.controllers import base
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from magnum.api.controllers import link
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from magnum.api.controllers.v1 import collection
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from magnum.api.controllers.v1 import types
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from magnum.api.controllers.v1 import utils as api_utils
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from magnum.common import exception
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from magnum import objects
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class NodePatchType(types.JsonPatchType):
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pass
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class Node(base.APIBase):
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"""API representation of a node.
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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 a node.
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"""
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uuid = types.uuid
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"""Unique UUID for this node"""
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type = wtypes.text
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"""Type of this node"""
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image_id = wtypes.text
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"""The image name or UUID to use as a base image for this node"""
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ironic_node_id = wtypes.text
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"""The Ironic node ID associated with this node"""
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links = wsme.wsattr([link.Link], readonly=True)
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"""A list containing a self link and associated node links"""
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def __init__(self, **kwargs):
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self.fields = []
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for field in objects.Node.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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@staticmethod
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def _convert_with_links(node, url, expand=True):
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if not expand:
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node.unset_fields_except(['uuid', 'name', 'type', 'image_id',
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'ironic_node_id'])
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node.links = [link.Link.make_link('self', url,
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'nodes', node.uuid),
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link.Link.make_link('bookmark', url,
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'nodes', node.uuid,
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bookmark=True)
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]
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return node
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@classmethod
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def convert_with_links(cls, rpc_node, expand=True):
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node = Node(**rpc_node.as_dict())
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return cls._convert_with_links(node, pecan.request.host_url, expand)
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@classmethod
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def sample(cls, expand=True):
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sample = cls(uuid='27e3153e-d5bf-4b7e-b517-fb518e17f34c',
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type='virt',
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image_id='Fedora-k8s',
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ironic_node_id='4b6ec4a9-d412-494a-be77-a2fd16361402',
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created_at=datetime.datetime.utcnow(),
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updated_at=datetime.datetime.utcnow())
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return cls._convert_with_links(sample, 'http://localhost:9511', expand)
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class NodeCollection(collection.Collection):
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"""API representation of a collection of nodes."""
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nodes = [Node]
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"""A list containing nodes objects"""
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def __init__(self, **kwargs):
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self._type = 'nodes'
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@staticmethod
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def convert_with_links(rpc_nodes, limit, url=None, expand=False, **kwargs):
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collection = NodeCollection()
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collection.nodes = [Node.convert_with_links(p, expand)
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for p in rpc_nodes]
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collection.next = collection.get_next(limit, url=url, **kwargs)
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return collection
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@classmethod
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def sample(cls):
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sample = cls()
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sample.nodes = [Node.sample(expand=False)]
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return sample
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class NodesController(rest.RestController):
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"""REST controller for Nodes."""
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from_nodes = False
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"""A flag to indicate if the requests to this controller are coming
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from the top-level resource Nodes."""
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_custom_actions = {
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'detail': ['GET'],
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}
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def _get_nodes_collection(self, marker, limit,
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sort_key, sort_dir, expand=False,
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resource_url=None):
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limit = api_utils.validate_limit(limit)
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sort_dir = api_utils.validate_sort_dir(sort_dir)
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marker_obj = None
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if marker:
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marker_obj = objects.Node.get_by_uuid(pecan.request.context,
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marker)
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nodes = objects.Node.list(pecan.request.context, limit,
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marker_obj, sort_key=sort_key,
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sort_dir=sort_dir)
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return NodeCollection.convert_with_links(nodes, limit,
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url=resource_url,
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expand=expand,
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sort_key=sort_key,
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sort_dir=sort_dir)
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@wsme_pecan.wsexpose(NodeCollection, types.uuid,
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types.uuid, int, wtypes.text, wtypes.text)
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def get_all(self, node_uuid=None, marker=None, limit=None,
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sort_key='id', sort_dir='asc'):
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"""Retrieve a list of nodes.
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:param marker: pagination marker for large data sets.
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:param limit: maximum number of resources to return in a single result.
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:param sort_key: column to sort results by. Default: id.
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:param sort_dir: direction to sort. "asc" or "desc". Default: asc.
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"""
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return self._get_nodes_collection(marker, limit, sort_key,
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sort_dir)
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@wsme_pecan.wsexpose(NodeCollection, types.uuid,
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types.uuid, int, wtypes.text, wtypes.text)
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def detail(self, node_uuid=None, marker=None, limit=None,
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sort_key='id', sort_dir='asc'):
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"""Retrieve a list of nodes with detail.
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:param node_uuid: UUID of a node, to get only nodes for that node.
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:param marker: pagination marker for large data sets.
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:param limit: maximum number of resources to return in a single result.
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:param sort_key: column to sort results by. Default: id.
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:param sort_dir: direction to sort. "asc" or "desc". Default: asc.
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"""
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# NOTE(lucasagomes): /detail should only work agaist collections
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parent = pecan.request.path.split('/')[:-1][-1]
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if parent != "nodes":
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raise exception.HTTPNotFound
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expand = True
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resource_url = '/'.join(['nodes', 'detail'])
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return self._get_nodes_collection(marker, limit,
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sort_key, sort_dir, expand,
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resource_url)
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@wsme_pecan.wsexpose(Node, types.uuid)
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def get_one(self, node_uuid):
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"""Retrieve information about the given node.
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:param node_uuid: UUID of a node.
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"""
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if self.from_nodes:
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raise exception.OperationNotPermitted
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rpc_node = objects.Node.get_by_uuid(pecan.request.context, node_uuid)
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return Node.convert_with_links(rpc_node)
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@wsme_pecan.wsexpose(Node, body=Node, status_code=201)
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def post(self, node):
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"""Create a new node.
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:param node: a node within the request body.
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"""
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if self.from_nodes:
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raise exception.OperationNotPermitted
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node_dict = node.as_dict()
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ctxt = pecan.request.context
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auth_token = ctxt.auth_token_info['token']
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node_dict['project_id'] = auth_token['project']['id']
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node_dict['user_id'] = auth_token['user']['id']
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new_node = objects.Node(ctxt, **node_dict)
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new_node.create()
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# Set the HTTP Location Header
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pecan.response.location = link.build_url('nodes', new_node.uuid)
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return Node.convert_with_links(new_node)
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@wsme.validate(types.uuid, [NodePatchType])
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@wsme_pecan.wsexpose(Node, types.uuid, body=[NodePatchType])
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def patch(self, node_uuid, patch):
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"""Update an existing node.
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:param node_uuid: UUID of a node.
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:param patch: a json PATCH document to apply to this node.
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"""
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if self.from_nodes:
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raise exception.OperationNotPermitted
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rpc_node = objects.Node.get_by_uuid(pecan.request.context, node_uuid)
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try:
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node_dict = rpc_node.as_dict()
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node = Node(**api_utils.apply_jsonpatch(node_dict, patch))
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except api_utils.JSONPATCH_EXCEPTIONS as e:
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raise exception.PatchError(patch=patch, reason=e)
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# Update only the fields that have changed
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for field in objects.Node.fields:
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try:
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patch_val = getattr(node, field)
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except AttributeError:
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# Ignore fields that aren't exposed in the API
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continue
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if patch_val == wtypes.Unset:
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patch_val = None
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if rpc_node[field] != patch_val:
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rpc_node[field] = patch_val
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rpc_node.save()
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return Node.convert_with_links(rpc_node)
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@wsme_pecan.wsexpose(None, types.uuid, status_code=204)
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def delete(self, node_uuid):
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"""Delete a node.
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:param node_uuid: UUID of a node.
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"""
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if self.from_nodes:
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raise exception.OperationNotPermitted
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rpc_node = objects.Node.get_by_uuid(pecan.request.context,
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node_uuid)
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rpc_node.destroy()
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