# Copyright (c) 2017 Hitachi, Ltd.
#
# 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 datetime
from ironic_lib import metrics_utils
from oslo_utils import uuidutils
from pecan import rest
import six
from six.moves import http_client
import wsme
from wsme import types as wtypes
from ironic import api
from ironic.api.controllers import base
from ironic.api.controllers import link
from ironic.api.controllers.v1 import collection
from ironic.api.controllers.v1 import notification_utils as notify
from ironic.api.controllers.v1 import types
from ironic.api.controllers.v1 import utils as api_utils
from ironic.api import expose
from ironic.common import exception
from ironic.common.i18n import _
from ironic.common import policy
from ironic import objects
METRICS = metrics_utils.get_metrics_logger(__name__)
_DEFAULT_RETURN_FIELDS = ('uuid', 'node_uuid', 'type', 'connector_id')
[docs]class VolumeConnector(base.APIBase):
"""API representation of a volume connector.
This class enforces type checking and value constraints, and converts
between the internal object model and the API representation of a volume
connector.
"""
_node_uuid = None
def _get_node_uuid(self):
return self._node_uuid
def _set_node_identifiers(self, value):
"""Set both UUID and ID of a node for VolumeConnector object
:param value: UUID, ID of a node, or wtypes.Unset
"""
if value == wtypes.Unset:
self._node_uuid = wtypes.Unset
elif value and self._node_uuid != value:
try:
node = objects.Node.get(api.request.context, value)
self._node_uuid = node.uuid
# NOTE(smoriya): Create the node_id attribute on-the-fly
# to satisfy the api -> rpc object conversion.
self.node_id = node.id
except exception.NodeNotFound as e:
# Change error code because 404 (NotFound) is inappropriate
# response for a POST request to create a VolumeConnector
e.code = http_client.BAD_REQUEST # BadRequest
raise
uuid = types.uuid
"""Unique UUID for this volume connector"""
type = wsme.wsattr(wtypes.text, mandatory=True)
"""The type of volume connector"""
connector_id = wsme.wsattr(wtypes.text, mandatory=True)
"""The connector_id for this volume connector"""
extra = {wtypes.text: types.jsontype}
"""The metadata for this volume connector"""
node_uuid = wsme.wsproperty(types.uuid, _get_node_uuid,
_set_node_identifiers, mandatory=True)
"""The UUID of the node this volume connector belongs to"""
links = wsme.wsattr([link.Link], readonly=True)
"""A list containing a self link and associated volume connector links"""
def __init__(self, **kwargs):
self.fields = []
fields = list(objects.VolumeConnector.fields)
for field in fields:
# Skip fields we do not expose.
if not hasattr(self, field):
continue
self.fields.append(field)
setattr(self, field, kwargs.get(field, wtypes.Unset))
# NOTE(smoriya): node_id is an attribute created on-the-fly
# by _set_node_uuid(), it needs to be present in the fields so
# that as_dict() will contain node_id field when converting it
# before saving it in the database.
self.fields.append('node_id')
# NOTE(smoriya): node_uuid is not part of objects.VolumeConnector.-
# fields because it's an API-only attribute
self.fields.append('node_uuid')
# NOTE(jtaryma): Additionally to node_uuid, node_id is handled as a
# secondary identifier in case RPC volume connector object dictionary
# was passed to the constructor.
self.node_uuid = kwargs.get('node_uuid') or kwargs.get('node_id',
wtypes.Unset)
@staticmethod
def _convert_with_links(connector, url):
connector.links = [link.Link.make_link('self', url,
'volume/connectors',
connector.uuid),
link.Link.make_link('bookmark', url,
'volume/connectors',
connector.uuid,
bookmark=True)
]
return connector
[docs] @classmethod
def convert_with_links(cls, rpc_connector, fields=None, sanitize=True):
connector = VolumeConnector(**rpc_connector.as_dict())
if fields is not None:
api_utils.check_for_invalid_fields(fields, connector.as_dict())
connector = cls._convert_with_links(connector,
api.request.public_url)
if not sanitize:
return connector
connector.sanitize(fields)
return connector
[docs] def sanitize(self, fields=None):
"""Removes sensitive and unrequested data.
Will only keep the fields specified in the ``fields`` parameter.
:param fields:
list of fields to preserve, or ``None`` to preserve them all
:type fields: list of str
"""
if fields is not None:
self.unset_fields_except(fields)
# never expose the node_id attribute
self.node_id = wtypes.Unset
[docs] @classmethod
def sample(cls, expand=True):
time = datetime.datetime(2000, 1, 1, 12, 0, 0)
sample = cls(uuid='86cfd480-0842-4abb-8386-e46149beb82f',
type='iqn',
connector_id='iqn.2010-10.org.openstack:51332b70524',
extra={'foo': 'bar'},
created_at=time,
updated_at=time)
sample._node_uuid = '7ae81bb3-dec3-4289-8d6c-da80bd8001ae'
fields = None if expand else _DEFAULT_RETURN_FIELDS
return cls._convert_with_links(sample, 'http://localhost:6385',
fields=fields)
[docs]class VolumeConnectorPatchType(types.JsonPatchType):
_api_base = VolumeConnector
[docs]class VolumeConnectorCollection(collection.Collection):
"""API representation of a collection of volume connectors."""
connectors = [VolumeConnector]
"""A list containing volume connector objects"""
def __init__(self, **kwargs):
self._type = 'connectors'
[docs] @staticmethod
def convert_with_links(rpc_connectors, limit, url=None, fields=None,
detail=None, **kwargs):
collection = VolumeConnectorCollection()
collection.connectors = [
VolumeConnector.convert_with_links(p, fields=fields,
sanitize=False)
for p in rpc_connectors]
if detail:
kwargs['detail'] = detail
collection.next = collection.get_next(limit, url=url, fields=fields,
**kwargs)
for connector in collection.connectors:
connector.sanitize(fields)
return collection
[docs] @classmethod
def sample(cls):
sample = cls()
sample.connectors = [VolumeConnector.sample(expand=False)]
return sample
[docs]class VolumeConnectorsController(rest.RestController):
"""REST controller for VolumeConnectors."""
invalid_sort_key_list = ['extra']
def __init__(self, node_ident=None):
super(VolumeConnectorsController, self).__init__()
self.parent_node_ident = node_ident
def _get_volume_connectors_collection(self, node_ident, marker, limit,
sort_key, sort_dir,
resource_url=None,
fields=None, detail=None):
limit = api_utils.validate_limit(limit)
sort_dir = api_utils.validate_sort_dir(sort_dir)
marker_obj = None
if marker:
marker_obj = objects.VolumeConnector.get_by_uuid(
api.request.context, marker)
if sort_key in self.invalid_sort_key_list:
raise exception.InvalidParameterValue(
_("The sort_key value %(key)s is an invalid field for "
"sorting") % {'key': sort_key})
node_ident = self.parent_node_ident or node_ident
if node_ident:
# FIXME(comstud): Since all we need is the node ID, we can
# make this more efficient by only querying
# for that column. This will get cleaned up
# as we move to the object interface.
node = api_utils.get_rpc_node(node_ident)
connectors = objects.VolumeConnector.list_by_node_id(
api.request.context, node.id, limit, marker_obj,
sort_key=sort_key, sort_dir=sort_dir)
else:
connectors = objects.VolumeConnector.list(api.request.context,
limit,
marker_obj,
sort_key=sort_key,
sort_dir=sort_dir)
return VolumeConnectorCollection.convert_with_links(connectors, limit,
url=resource_url,
fields=fields,
sort_key=sort_key,
sort_dir=sort_dir,
detail=detail)
[docs] @METRICS.timer('VolumeConnectorsController.get_all')
@expose.expose(VolumeConnectorCollection, types.uuid_or_name, types.uuid,
int, wtypes.text, wtypes.text, types.listtype,
types.boolean)
def get_all(self, node=None, marker=None, limit=None, sort_key='id',
sort_dir='asc', fields=None, detail=None):
"""Retrieve a list of volume connectors.
:param node: UUID or name of a node, to get only volume connectors
for that node.
:param marker: pagination marker for large data sets.
:param limit: maximum number of resources to return in a single result.
This value cannot be larger than the value of max_limit
in the [api] section of the ironic configuration, or only
max_limit resources will be returned.
:param sort_key: column to sort results by. Default: id.
:param sort_dir: direction to sort. "asc" or "desc". Default: "asc".
:param fields: Optional, a list with a specified set of fields
of the resource to be returned.
:param detail: Optional, whether to retrieve with detail.
:returns: a list of volume connectors, or an empty list if no volume
connector is found.
:raises: InvalidParameterValue if sort_key does not exist
:raises: InvalidParameterValue if sort key is invalid for sorting.
:raises: InvalidParameterValue if both fields and detail are specified.
"""
cdict = api.request.context.to_policy_values()
policy.authorize('baremetal:volume:get', cdict, cdict)
if fields is None and not detail:
fields = _DEFAULT_RETURN_FIELDS
if fields and detail:
raise exception.InvalidParameterValue(
_("Can't fetch a subset of fields with 'detail' set"))
resource_url = 'volume/connectors'
return self._get_volume_connectors_collection(
node, marker, limit, sort_key, sort_dir, resource_url=resource_url,
fields=fields, detail=detail)
[docs] @METRICS.timer('VolumeConnectorsController.get_one')
@expose.expose(VolumeConnector, types.uuid, types.listtype)
def get_one(self, connector_uuid, fields=None):
"""Retrieve information about the given volume connector.
:param connector_uuid: UUID of a volume connector.
:param fields: Optional, a list with a specified set of fields
of the resource to be returned.
:returns: API-serializable volume connector object.
:raises: OperationNotPermitted if accessed with specifying a parent
node.
:raises: VolumeConnectorNotFound if no volume connector exists with
the specified UUID.
"""
cdict = api.request.context.to_policy_values()
policy.authorize('baremetal:volume:get', cdict, cdict)
if self.parent_node_ident:
raise exception.OperationNotPermitted()
rpc_connector = objects.VolumeConnector.get_by_uuid(
api.request.context, connector_uuid)
return VolumeConnector.convert_with_links(rpc_connector, fields=fields)
[docs] @METRICS.timer('VolumeConnectorsController.post')
@expose.expose(VolumeConnector, body=VolumeConnector,
status_code=http_client.CREATED)
def post(self, connector):
"""Create a new volume connector.
:param connector: a volume connector within the request body.
:returns: API-serializable volume connector object.
:raises: OperationNotPermitted if accessed with specifying a parent
node.
:raises: VolumeConnectorTypeAndIdAlreadyExists if a volume
connector already exists with the same type and connector_id
:raises: VolumeConnectorAlreadyExists if a volume connector with the
same UUID already exists
"""
context = api.request.context
cdict = context.to_policy_values()
policy.authorize('baremetal:volume:create', cdict, cdict)
if self.parent_node_ident:
raise exception.OperationNotPermitted()
connector_dict = connector.as_dict()
# NOTE(hshiina): UUID is mandatory for notification payload
if not connector_dict.get('uuid'):
connector_dict['uuid'] = uuidutils.generate_uuid()
new_connector = objects.VolumeConnector(context, **connector_dict)
notify.emit_start_notification(context, new_connector, 'create',
node_uuid=connector.node_uuid)
with notify.handle_error_notification(context, new_connector,
'create',
node_uuid=connector.node_uuid):
new_connector.create()
notify.emit_end_notification(context, new_connector, 'create',
node_uuid=connector.node_uuid)
# Set the HTTP Location Header
api.response.location = link.build_url('volume/connectors',
new_connector.uuid)
return VolumeConnector.convert_with_links(new_connector)
[docs] @METRICS.timer('VolumeConnectorsController.patch')
@wsme.validate(types.uuid, [VolumeConnectorPatchType])
@expose.expose(VolumeConnector, types.uuid,
body=[VolumeConnectorPatchType])
def patch(self, connector_uuid, patch):
"""Update an existing volume connector.
:param connector_uuid: UUID of a volume connector.
:param patch: a json PATCH document to apply to this volume connector.
:returns: API-serializable volume connector object.
:raises: OperationNotPermitted if accessed with specifying a
parent node.
:raises: PatchError if a given patch can not be applied.
:raises: VolumeConnectorNotFound if no volume connector exists with
the specified UUID.
:raises: InvalidParameterValue if the volume connector's UUID is being
changed
:raises: NodeLocked if node is locked by another conductor
:raises: NodeNotFound if the node associated with the connector does
not exist
:raises: VolumeConnectorTypeAndIdAlreadyExists if another connector
already exists with the same values for type and connector_id
fields
:raises: InvalidUUID if invalid node UUID is passed in the patch.
:raises: InvalidStateRequested If a node associated with the
volume connector is not powered off.
"""
context = api.request.context
cdict = context.to_policy_values()
policy.authorize('baremetal:volume:update', cdict, cdict)
if self.parent_node_ident:
raise exception.OperationNotPermitted()
values = api_utils.get_patch_values(patch, '/node_uuid')
for value in values:
if not uuidutils.is_uuid_like(value):
message = _("Expected a UUID for node_uuid, but received "
"%(uuid)s.") % {'uuid': six.text_type(value)}
raise exception.InvalidUUID(message=message)
rpc_connector = objects.VolumeConnector.get_by_uuid(context,
connector_uuid)
connector_dict = rpc_connector.as_dict()
# NOTE(smoriya):
# 1) Remove node_id because it's an internal value and
# not present in the API object
# 2) Add node_uuid
connector_dict['node_uuid'] = connector_dict.pop('node_id', None)
connector = VolumeConnector(
**api_utils.apply_jsonpatch(connector_dict, patch))
# Update only the fields that have changed.
for field in objects.VolumeConnector.fields:
try:
patch_val = getattr(connector, field)
except AttributeError:
# Ignore fields that aren't exposed in the API
continue
if patch_val == wtypes.Unset:
patch_val = None
if rpc_connector[field] != patch_val:
rpc_connector[field] = patch_val
rpc_node = objects.Node.get_by_id(context,
rpc_connector.node_id)
notify.emit_start_notification(context, rpc_connector, 'update',
node_uuid=rpc_node.uuid)
with notify.handle_error_notification(context, rpc_connector, 'update',
node_uuid=rpc_node.uuid):
topic = api.request.rpcapi.get_topic_for(rpc_node)
new_connector = api.request.rpcapi.update_volume_connector(
context, rpc_connector, topic)
api_connector = VolumeConnector.convert_with_links(new_connector)
notify.emit_end_notification(context, new_connector, 'update',
node_uuid=rpc_node.uuid)
return api_connector
[docs] @METRICS.timer('VolumeConnectorsController.delete')
@expose.expose(None, types.uuid, status_code=http_client.NO_CONTENT)
def delete(self, connector_uuid):
"""Delete a volume connector.
:param connector_uuid: UUID of a volume connector.
:raises: OperationNotPermitted if accessed with specifying a
parent node.
:raises: NodeLocked if node is locked by another conductor
:raises: NodeNotFound if the node associated with the connector does
not exist
:raises: VolumeConnectorNotFound if the volume connector cannot be
found
:raises: InvalidStateRequested If a node associated with the
volume connector is not powered off.
"""
context = api.request.context
cdict = context.to_policy_values()
policy.authorize('baremetal:volume:delete', cdict, cdict)
if self.parent_node_ident:
raise exception.OperationNotPermitted()
rpc_connector = objects.VolumeConnector.get_by_uuid(context,
connector_uuid)
rpc_node = objects.Node.get_by_id(context, rpc_connector.node_id)
notify.emit_start_notification(context, rpc_connector, 'delete',
node_uuid=rpc_node.uuid)
with notify.handle_error_notification(context, rpc_connector,
'delete',
node_uuid=rpc_node.uuid):
topic = api.request.rpcapi.get_topic_for(rpc_node)
api.request.rpcapi.destroy_volume_connector(context,
rpc_connector, topic)
notify.emit_end_notification(context, rpc_connector, 'delete',
node_uuid=rpc_node.uuid)
