504 lines
21 KiB
Python
504 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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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 import api
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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', 'volume_type',
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'boot_index', 'volume_id')
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class VolumeTarget(base.APIBase):
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"""API representation of a volume target.
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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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target.
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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 VolumeTarget 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(api.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 VolumeTarget
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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 target"""
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volume_type = wsme.wsattr(wtypes.text, mandatory=True)
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"""The volume_type of volume target"""
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properties = {wtypes.text: types.jsontype}
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"""The properties for this volume target"""
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boot_index = wsme.wsattr(int, mandatory=True)
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"""The boot_index of volume target"""
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volume_id = wsme.wsattr(wtypes.text, mandatory=True)
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"""The volume_id for this volume target"""
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extra = {wtypes.text: types.jsontype}
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"""The metadata for this volume target"""
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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 target 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 target links"""
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def __init__(self, **kwargs):
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self.fields = []
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fields = list(objects.VolumeTarget.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.VolumeTarget.-
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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 target 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(target, url):
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target.links = [link.Link.make_link('self', url,
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'volume/targets',
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target.uuid),
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link.Link.make_link('bookmark', url,
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'volume/targets',
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target.uuid,
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bookmark=True)
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]
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return target
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@classmethod
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def convert_with_links(cls, rpc_target, fields=None, sanitize=True):
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target = VolumeTarget(**rpc_target.as_dict())
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if fields is not None:
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api_utils.check_for_invalid_fields(fields, target.as_dict())
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target = cls._convert_with_links(target, api.request.public_url)
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if not sanitize:
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return target
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target.sanitize(fields)
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return target
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def sanitize(self, fields=None):
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"""Removes sensitive and unrequested data.
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Will only keep the fields specified in the ``fields`` parameter.
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:param fields:
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list of fields to preserve, or ``None`` to preserve them all
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:type fields: list of str
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"""
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if fields is not None:
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self.unset_fields_except(fields)
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# never expose the node_id attribute
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self.node_id = wtypes.Unset
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@classmethod
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def sample(cls, expand=True):
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time = datetime.datetime(2000, 1, 1, 12, 0, 0)
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properties = {"auth_method": "CHAP",
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"auth_username": "XXX",
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"auth_password": "XXX",
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"target_iqn": "iqn.2010-10.com.example:vol-X",
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"target_portal": "192.168.0.123:3260",
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"volume_id": "a2f3ff15-b3ea-4656-ab90-acbaa1a07607",
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"target_lun": 0,
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"access_mode": "rw"}
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sample = cls(uuid='667808d4-622f-4629-b629-07753a19e633',
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volume_type='iscsi',
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boot_index=0,
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volume_id='a2f3ff15-b3ea-4656-ab90-acbaa1a07607',
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properties=properties,
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extra={'foo': 'bar'},
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created_at=time,
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updated_at=time)
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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 VolumeTargetPatchType(types.JsonPatchType):
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_api_base = VolumeTarget
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class VolumeTargetCollection(collection.Collection):
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"""API representation of a collection of volume targets."""
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targets = [VolumeTarget]
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"""A list containing volume target objects"""
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def __init__(self, **kwargs):
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self._type = 'targets'
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@staticmethod
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def convert_with_links(rpc_targets, limit, url=None, fields=None,
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detail=None, **kwargs):
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collection = VolumeTargetCollection()
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collection.targets = [
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VolumeTarget.convert_with_links(p, fields=fields, sanitize=False)
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for p in rpc_targets]
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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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for target in collection.targets:
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target.sanitize(fields)
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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.targets = [VolumeTarget.sample(expand=False)]
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return sample
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class VolumeTargetsController(rest.RestController):
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"""REST controller for VolumeTargets."""
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invalid_sort_key_list = ['extra', 'properties']
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def __init__(self, node_ident=None):
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super(VolumeTargetsController, self).__init__()
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self.parent_node_ident = node_ident
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def _get_volume_targets_collection(self, node_ident, marker, limit,
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sort_key, sort_dir, 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.VolumeTarget.get_by_uuid(
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api.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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targets = objects.VolumeTarget.list_by_node_id(
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api.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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targets = objects.VolumeTarget.list(api.request.context,
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limit, marker_obj,
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sort_key=sort_key,
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sort_dir=sort_dir)
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return VolumeTargetCollection.convert_with_links(targets, 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('VolumeTargetsController.get_all')
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@expose.expose(VolumeTargetCollection, 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 targets.
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:param node: UUID or name of a node, to get only volume targets
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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 targets, or an empty list if no volume
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target 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 = api.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/targets'
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return self._get_volume_targets_collection(node, marker, limit,
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sort_key, sort_dir,
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resource_url=resource_url,
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fields=fields,
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detail=detail)
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@METRICS.timer('VolumeTargetsController.get_one')
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@expose.expose(VolumeTarget, types.uuid, types.listtype)
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def get_one(self, target_uuid, fields=None):
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"""Retrieve information about the given volume target.
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:param target_uuid: UUID of a volume target.
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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 target object.
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:raises: OperationNotPermitted if accessed with specifying a parent
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node.
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:raises: VolumeTargetNotFound if no volume target with this UUID exists
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"""
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cdict = api.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_target = objects.VolumeTarget.get_by_uuid(
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api.request.context, target_uuid)
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return VolumeTarget.convert_with_links(rpc_target, fields=fields)
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@METRICS.timer('VolumeTargetsController.post')
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@expose.expose(VolumeTarget, body=VolumeTarget,
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status_code=http_client.CREATED)
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def post(self, target):
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"""Create a new volume target.
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:param target: a volume target within the request body.
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:returns: API-serializable volume target object.
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:raises: OperationNotPermitted if accessed with specifying a parent
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node.
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:raises: VolumeTargetBootIndexAlreadyExists if a volume target already
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exists with the same node ID and boot index
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:raises: VolumeTargetAlreadyExists if a volume target with the same
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UUID exists
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"""
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context = api.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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target_dict = target.as_dict()
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# NOTE(hshiina): UUID is mandatory for notification payload
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if not target_dict.get('uuid'):
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target_dict['uuid'] = uuidutils.generate_uuid()
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new_target = objects.VolumeTarget(context, **target_dict)
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notify.emit_start_notification(context, new_target, 'create',
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node_uuid=target.node_uuid)
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with notify.handle_error_notification(context, new_target, 'create',
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node_uuid=target.node_uuid):
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new_target.create()
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notify.emit_end_notification(context, new_target, 'create',
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node_uuid=target.node_uuid)
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# Set the HTTP Location Header
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api.response.location = link.build_url('volume/targets',
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new_target.uuid)
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return VolumeTarget.convert_with_links(new_target)
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@METRICS.timer('VolumeTargetsController.patch')
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@wsme.validate(types.uuid, [VolumeTargetPatchType])
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@expose.expose(VolumeTarget, types.uuid,
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body=[VolumeTargetPatchType])
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def patch(self, target_uuid, patch):
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"""Update an existing volume target.
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:param target_uuid: UUID of a volume target.
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:param patch: a json PATCH document to apply to this volume target.
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:returns: API-serializable volume target 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: InvalidParameterValue if the volume target's UUID is being
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changed
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:raises: NodeLocked if the node is already locked
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:raises: NodeNotFound if the node associated with the volume target
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does not exist
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:raises: VolumeTargetNotFound if the volume target cannot be found
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:raises: VolumeTargetBootIndexAlreadyExists if a volume target already
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exists with the same node ID and boot index values
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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 target is not powered off.
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"""
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context = api.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_target = objects.VolumeTarget.get_by_uuid(context, target_uuid)
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target_dict = rpc_target.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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target_dict['node_uuid'] = target_dict.pop('node_id', None)
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target = VolumeTarget(
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**api_utils.apply_jsonpatch(target_dict, patch))
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# Update only the fields that have changed.
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for field in objects.VolumeTarget.fields:
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try:
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patch_val = getattr(target, 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_target[field] != patch_val:
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rpc_target[field] = patch_val
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rpc_node = objects.Node.get_by_id(context, rpc_target.node_id)
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notify.emit_start_notification(context, rpc_target, 'update',
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node_uuid=rpc_node.uuid)
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with notify.handle_error_notification(context, rpc_target, 'update',
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node_uuid=rpc_node.uuid):
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topic = api.request.rpcapi.get_topic_for(rpc_node)
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new_target = api.request.rpcapi.update_volume_target(
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context, rpc_target, topic)
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api_target = VolumeTarget.convert_with_links(new_target)
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notify.emit_end_notification(context, new_target, 'update',
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node_uuid=rpc_node.uuid)
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return api_target
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@METRICS.timer('VolumeTargetsController.delete')
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@expose.expose(None, types.uuid, status_code=http_client.NO_CONTENT)
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def delete(self, target_uuid):
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"""Delete a volume target.
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:param target_uuid: UUID of a volume target.
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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 target does
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not exist
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:raises: VolumeTargetNotFound if the volume target cannot be found
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:raises: InvalidStateRequested If a node associated with the
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volume target is not powered off.
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"""
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context = api.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_target = objects.VolumeTarget.get_by_uuid(context, target_uuid)
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rpc_node = objects.Node.get_by_id(context, rpc_target.node_id)
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notify.emit_start_notification(context, rpc_target, 'delete',
|
|
node_uuid=rpc_node.uuid)
|
|
with notify.handle_error_notification(context, rpc_target, 'delete',
|
|
node_uuid=rpc_node.uuid):
|
|
topic = api.request.rpcapi.get_topic_for(rpc_node)
|
|
api.request.rpcapi.destroy_volume_target(context,
|
|
rpc_target, topic)
|
|
notify.emit_end_notification(context, rpc_target, 'delete',
|
|
node_uuid=rpc_node.uuid)
|