481 lines
21 KiB
Python
481 lines
21 KiB
Python
# Copyright (c) 2017 Hitachi, Ltd.
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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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from ironic_lib import metrics_utils
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from oslo_utils import uuidutils
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import pecan
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from pecan import rest
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import six
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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 ironic.api.controllers import base
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from ironic.api.controllers import link
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from ironic.api.controllers.v1 import collection
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from ironic.api.controllers.v1 import notification_utils as notify
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from ironic.api.controllers.v1 import types
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from ironic.api.controllers.v1 import utils as api_utils
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from ironic.api import expose
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from ironic.common import exception
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from ironic.common.i18n import _
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from ironic.common import policy
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from ironic import objects
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METRICS = metrics_utils.get_metrics_logger(__name__)
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_DEFAULT_RETURN_FIELDS = ('uuid', 'node_uuid', 'type', 'connector_id')
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class VolumeConnector(base.APIBase):
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"""API representation of a volume connector.
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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 volume
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connector.
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"""
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_node_uuid = None
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def _get_node_uuid(self):
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return self._node_uuid
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def _set_node_identifiers(self, value):
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"""Set both UUID and ID of a node for VolumeConnector object
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:param value: UUID, ID of a node, or wtypes.Unset
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"""
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if value == wtypes.Unset:
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self._node_uuid = wtypes.Unset
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elif value and self._node_uuid != value:
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try:
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node = objects.Node.get(pecan.request.context, value)
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self._node_uuid = node.uuid
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# NOTE(smoriya): Create the node_id attribute on-the-fly
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# to satisfy the api -> rpc object conversion.
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self.node_id = node.id
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except exception.NodeNotFound as e:
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# Change error code because 404 (NotFound) is inappropriate
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# response for a POST request to create a VolumeConnector
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e.code = http_client.BAD_REQUEST # BadRequest
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raise
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uuid = types.uuid
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"""Unique UUID for this volume connector"""
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type = wsme.wsattr(wtypes.text, mandatory=True)
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"""The type of volume connector"""
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connector_id = wsme.wsattr(wtypes.text, mandatory=True)
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"""The connector_id for this volume connector"""
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extra = {wtypes.text: types.jsontype}
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"""The metadata for this volume connector"""
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node_uuid = wsme.wsproperty(types.uuid, _get_node_uuid,
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_set_node_identifiers, mandatory=True)
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"""The UUID of the node this volume connector belongs to"""
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links = wsme.wsattr([link.Link], readonly=True)
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"""A list containing a self link and associated volume connector links"""
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def __init__(self, **kwargs):
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self.fields = []
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fields = list(objects.VolumeConnector.fields)
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for field in 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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# NOTE(smoriya): node_id is an attribute created on-the-fly
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# by _set_node_uuid(), it needs to be present in the fields so
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# that as_dict() will contain node_id field when converting it
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# before saving it in the database.
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self.fields.append('node_id')
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# NOTE(smoriya): node_uuid is not part of objects.VolumeConnector.-
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# fields because it's an API-only attribute
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self.fields.append('node_uuid')
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# NOTE(jtaryma): Additionally to node_uuid, node_id is handled as a
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# secondary identifier in case RPC volume connector object dictionary
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# was passed to the constructor.
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self.node_uuid = kwargs.get('node_uuid') or kwargs.get('node_id',
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wtypes.Unset)
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@staticmethod
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def _convert_with_links(connector, url, fields=None):
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# NOTE(lucasagomes): Since we are able to return a specified set of
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# fields the "uuid" can be unset, so we need to save it in another
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# variable to use when building the links
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connector_uuid = connector.uuid
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if fields is not None:
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connector.unset_fields_except(fields)
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# never expose the node_id attribute
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connector.node_id = wtypes.Unset
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connector.links = [link.Link.make_link('self', url,
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'volume/connectors',
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connector_uuid),
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link.Link.make_link('bookmark', url,
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'volume/connectors',
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connector_uuid,
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bookmark=True)
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]
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return connector
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@classmethod
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def convert_with_links(cls, rpc_connector, fields=None):
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connector = VolumeConnector(**rpc_connector.as_dict())
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if fields is not None:
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api_utils.check_for_invalid_fields(fields, connector.as_dict())
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return cls._convert_with_links(connector, pecan.request.public_url,
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fields=fields)
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@classmethod
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def sample(cls, expand=True):
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sample = cls(uuid='86cfd480-0842-4abb-8386-e46149beb82f',
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type='iqn',
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connector_id='iqn.2010-10.org.openstack:51332b70524',
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extra={'foo': 'bar'},
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created_at=datetime.datetime.utcnow(),
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updated_at=datetime.datetime.utcnow())
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sample._node_uuid = '7ae81bb3-dec3-4289-8d6c-da80bd8001ae'
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fields = None if expand else _DEFAULT_RETURN_FIELDS
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return cls._convert_with_links(sample, 'http://localhost:6385',
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fields=fields)
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class VolumeConnectorPatchType(types.JsonPatchType):
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_api_base = VolumeConnector
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class VolumeConnectorCollection(collection.Collection):
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"""API representation of a collection of volume connectors."""
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connectors = [VolumeConnector]
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"""A list containing volume connector objects"""
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def __init__(self, **kwargs):
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self._type = 'connectors'
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@staticmethod
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def convert_with_links(rpc_connectors, limit, url=None, fields=None,
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detail=None, **kwargs):
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collection = VolumeConnectorCollection()
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collection.connectors = [
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VolumeConnector.convert_with_links(p, fields=fields)
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for p in rpc_connectors]
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if detail:
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kwargs['detail'] = detail
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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.connectors = [VolumeConnector.sample(expand=False)]
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return sample
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class VolumeConnectorsController(rest.RestController):
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"""REST controller for VolumeConnectors."""
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invalid_sort_key_list = ['extra']
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def __init__(self, node_ident=None):
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super(VolumeConnectorsController, self).__init__()
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self.parent_node_ident = node_ident
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def _get_volume_connectors_collection(self, node_ident, marker, limit,
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sort_key, sort_dir,
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resource_url=None,
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fields=None, detail=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.VolumeConnector.get_by_uuid(
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pecan.request.context, marker)
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if sort_key in self.invalid_sort_key_list:
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raise exception.InvalidParameterValue(
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_("The sort_key value %(key)s is an invalid field for "
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"sorting") % {'key': sort_key})
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node_ident = self.parent_node_ident or node_ident
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if node_ident:
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# FIXME(comstud): Since all we need is the node ID, we can
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# make this more efficient by only querying
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# for that column. This will get cleaned up
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# as we move to the object interface.
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node = api_utils.get_rpc_node(node_ident)
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connectors = objects.VolumeConnector.list_by_node_id(
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pecan.request.context, node.id, limit, marker_obj,
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sort_key=sort_key, sort_dir=sort_dir)
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else:
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connectors = objects.VolumeConnector.list(pecan.request.context,
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limit,
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marker_obj,
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sort_key=sort_key,
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sort_dir=sort_dir)
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return VolumeConnectorCollection.convert_with_links(connectors, limit,
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url=resource_url,
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fields=fields,
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sort_key=sort_key,
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sort_dir=sort_dir,
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detail=detail)
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@METRICS.timer('VolumeConnectorsController.get_all')
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@expose.expose(VolumeConnectorCollection, types.uuid_or_name, types.uuid,
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int, wtypes.text, wtypes.text, types.listtype,
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types.boolean)
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def get_all(self, node=None, marker=None, limit=None, sort_key='id',
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sort_dir='asc', fields=None, detail=None):
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"""Retrieve a list of volume connectors.
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:param node: UUID or name of a node, to get only volume connectors
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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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This value cannot be larger than the value of max_limit
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in the [api] section of the ironic configuration, or only
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max_limit resources will be returned.
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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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:param fields: Optional, a list with a specified set of fields
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of the resource to be returned.
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:param detail: Optional, whether to retrieve with detail.
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:returns: a list of volume connectors, or an empty list if no volume
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connector is found.
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:raises: InvalidParameterValue if sort_key does not exist
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:raises: InvalidParameterValue if sort key is invalid for sorting.
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:raises: InvalidParameterValue if both fields and detail are specified.
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"""
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cdict = pecan.request.context.to_policy_values()
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policy.authorize('baremetal:volume:get', cdict, cdict)
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if fields is None and not detail:
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fields = _DEFAULT_RETURN_FIELDS
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if fields and detail:
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raise exception.InvalidParameterValue(
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_("Can't fetch a subset of fields with 'detail' set"))
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resource_url = 'volume/connectors'
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return self._get_volume_connectors_collection(
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node, marker, limit, sort_key, sort_dir, resource_url=resource_url,
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fields=fields, detail=detail)
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@METRICS.timer('VolumeConnectorsController.get_one')
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@expose.expose(VolumeConnector, types.uuid, types.listtype)
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def get_one(self, connector_uuid, fields=None):
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"""Retrieve information about the given volume connector.
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:param connector_uuid: UUID of a volume connector.
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:param fields: Optional, a list with a specified set of fields
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of the resource to be returned.
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:returns: API-serializable volume connector object.
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:raises: OperationNotPermitted if accessed with specifying a parent
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node.
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:raises: VolumeConnectorNotFound if no volume connector exists with
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the specified UUID.
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"""
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cdict = pecan.request.context.to_policy_values()
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policy.authorize('baremetal:volume:get', cdict, cdict)
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if self.parent_node_ident:
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raise exception.OperationNotPermitted()
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rpc_connector = objects.VolumeConnector.get_by_uuid(
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pecan.request.context, connector_uuid)
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return VolumeConnector.convert_with_links(rpc_connector, fields=fields)
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@METRICS.timer('VolumeConnectorsController.post')
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@expose.expose(VolumeConnector, body=VolumeConnector,
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status_code=http_client.CREATED)
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def post(self, connector):
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"""Create a new volume connector.
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:param connector: a volume connector within the request body.
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:returns: API-serializable volume connector object.
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:raises: OperationNotPermitted if accessed with specifying a parent
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node.
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:raises: VolumeConnectorTypeAndIdAlreadyExists if a volume
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connector already exists with the same type and connector_id
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:raises: VolumeConnectorAlreadyExists if a volume connector with the
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same UUID already exists
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"""
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context = pecan.request.context
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cdict = context.to_policy_values()
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policy.authorize('baremetal:volume:create', cdict, cdict)
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if self.parent_node_ident:
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raise exception.OperationNotPermitted()
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connector_dict = connector.as_dict()
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# NOTE(hshiina): UUID is mandatory for notification payload
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if not connector_dict.get('uuid'):
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connector_dict['uuid'] = uuidutils.generate_uuid()
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new_connector = objects.VolumeConnector(context, **connector_dict)
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notify.emit_start_notification(context, new_connector, 'create',
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node_uuid=connector.node_uuid)
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with notify.handle_error_notification(context, new_connector,
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'create',
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node_uuid=connector.node_uuid):
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new_connector.create()
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notify.emit_end_notification(context, new_connector, 'create',
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node_uuid=connector.node_uuid)
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# Set the HTTP Location Header
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pecan.response.location = link.build_url('volume/connectors',
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new_connector.uuid)
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return VolumeConnector.convert_with_links(new_connector)
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@METRICS.timer('VolumeConnectorsController.patch')
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@wsme.validate(types.uuid, [VolumeConnectorPatchType])
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@expose.expose(VolumeConnector, types.uuid,
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body=[VolumeConnectorPatchType])
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def patch(self, connector_uuid, patch):
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"""Update an existing volume connector.
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:param connector_uuid: UUID of a volume connector.
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:param patch: a json PATCH document to apply to this volume connector.
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:returns: API-serializable volume connector object.
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:raises: OperationNotPermitted if accessed with specifying a
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parent node.
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:raises: PatchError if a given patch can not be applied.
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:raises: VolumeConnectorNotFound if no volume connector exists with
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the specified UUID.
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:raises: InvalidParameterValue if the volume connector's UUID is being
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changed
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:raises: NodeLocked if node is locked by another conductor
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:raises: NodeNotFound if the node associated with the connector does
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not exist
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:raises: VolumeConnectorTypeAndIdAlreadyExists if another connector
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already exists with the same values for type and connector_id
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fields
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:raises: InvalidUUID if invalid node UUID is passed in the patch.
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:raises: InvalidStateRequested If a node associated with the
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volume connector is not powered off.
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"""
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context = pecan.request.context
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cdict = context.to_policy_values()
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policy.authorize('baremetal:volume:update', cdict, cdict)
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if self.parent_node_ident:
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raise exception.OperationNotPermitted()
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values = api_utils.get_patch_values(patch, '/node_uuid')
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for value in values:
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if not uuidutils.is_uuid_like(value):
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message = _("Expected a UUID for node_uuid, but received "
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"%(uuid)s.") % {'uuid': six.text_type(value)}
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raise exception.InvalidUUID(message=message)
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rpc_connector = objects.VolumeConnector.get_by_uuid(context,
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connector_uuid)
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try:
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connector_dict = rpc_connector.as_dict()
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# NOTE(smoriya):
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# 1) Remove node_id because it's an internal value and
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# not present in the API object
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# 2) Add node_uuid
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connector_dict['node_uuid'] = connector_dict.pop('node_id', None)
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connector = VolumeConnector(
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**api_utils.apply_jsonpatch(connector_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.VolumeConnector.fields:
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try:
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patch_val = getattr(connector, 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_connector[field] != patch_val:
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rpc_connector[field] = patch_val
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rpc_node = objects.Node.get_by_id(context,
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rpc_connector.node_id)
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notify.emit_start_notification(context, rpc_connector, 'update',
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node_uuid=rpc_node.uuid)
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with notify.handle_error_notification(context, rpc_connector, 'update',
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node_uuid=rpc_node.uuid):
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topic = pecan.request.rpcapi.get_topic_for(rpc_node)
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new_connector = pecan.request.rpcapi.update_volume_connector(
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context, rpc_connector, topic)
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api_connector = VolumeConnector.convert_with_links(new_connector)
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notify.emit_end_notification(context, new_connector, 'update',
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node_uuid=rpc_node.uuid)
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return api_connector
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@METRICS.timer('VolumeConnectorsController.delete')
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@expose.expose(None, types.uuid, status_code=http_client.NO_CONTENT)
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def delete(self, connector_uuid):
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"""Delete a volume connector.
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:param connector_uuid: UUID of a volume connector.
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:raises: OperationNotPermitted if accessed with specifying a
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parent node.
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:raises: NodeLocked if node is locked by another conductor
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:raises: NodeNotFound if the node associated with the connector does
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not exist
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:raises: VolumeConnectorNotFound if the volume connector cannot be
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found
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:raises: InvalidStateRequested If a node associated with the
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volume connector is not powered off.
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"""
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context = pecan.request.context
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cdict = context.to_policy_values()
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policy.authorize('baremetal:volume:delete', cdict, cdict)
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if self.parent_node_ident:
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raise exception.OperationNotPermitted()
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rpc_connector = objects.VolumeConnector.get_by_uuid(context,
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connector_uuid)
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rpc_node = objects.Node.get_by_id(context, rpc_connector.node_id)
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notify.emit_start_notification(context, rpc_connector, 'delete',
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node_uuid=rpc_node.uuid)
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with notify.handle_error_notification(context, rpc_connector,
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'delete',
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node_uuid=rpc_node.uuid):
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topic = pecan.request.rpcapi.get_topic_for(rpc_node)
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pecan.request.rpcapi.destroy_volume_connector(context,
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rpc_connector, topic)
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notify.emit_end_notification(context, rpc_connector, 'delete',
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node_uuid=rpc_node.uuid)
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