# coding=utf-8
#
#
# 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.
from oslo_utils import strutils
from oslo_utils import uuidutils
from ironic.common import exception
from ironic.db import api as db_api
from ironic.objects import base
from ironic.objects import utils as obj_utils
[docs]class Node(base.IronicObject):
# Version 1.0: Initial version
# Version 1.1: Added instance_info
# Version 1.2: Add get() and get_by_id() and make get_by_uuid()
# only work with a uuid
# Version 1.3: Add create() and destroy()
# Version 1.4: Add get_by_instance_uuid()
# Version 1.5: Add list()
# Version 1.6: Add reserve() and release()
# Version 1.7: Add conductor_affinity
# Version 1.8: Add maintenance_reason
# Version 1.9: Add driver_internal_info
# Version 1.10: Add name and get_by_name()
# Version 1.11: Add clean_step
VERSION = '1.11'
dbapi = db_api.get_instance()
fields = {
'id': int,
'uuid': obj_utils.str_or_none,
'name': obj_utils.str_or_none,
'chassis_id': obj_utils.int_or_none,
'instance_uuid': obj_utils.str_or_none,
'driver': obj_utils.str_or_none,
'driver_info': obj_utils.dict_or_none,
'driver_internal_info': obj_utils.dict_or_none,
# A clean step dictionary, indicating the current clean step
# being executed, or None, indicating cleaning is not in progress
# or has not yet started.
'clean_step': obj_utils.dict_or_none,
'instance_info': obj_utils.dict_or_none,
'properties': obj_utils.dict_or_none,
'reservation': obj_utils.str_or_none,
# a reference to the id of the conductor service, not its hostname,
# that has most recently performed some action which could require
# local state to be maintained (eg, built a PXE config)
'conductor_affinity': obj_utils.int_or_none,
# One of states.POWER_ON|POWER_OFF|NOSTATE|ERROR
'power_state': obj_utils.str_or_none,
# Set to one of states.POWER_ON|POWER_OFF when a power operation
# starts, and set to NOSTATE when the operation finishes
# (successfully or unsuccessfully).
'target_power_state': obj_utils.str_or_none,
'provision_state': obj_utils.str_or_none,
'provision_updated_at': obj_utils.datetime_or_str_or_none,
'target_provision_state': obj_utils.str_or_none,
'maintenance': bool,
'maintenance_reason': obj_utils.str_or_none,
'console_enabled': bool,
# Any error from the most recent (last) asynchronous transaction
# that started but failed to finish.
'last_error': obj_utils.str_or_none,
'inspection_finished_at': obj_utils.datetime_or_str_or_none,
'inspection_started_at': obj_utils.datetime_or_str_or_none,
'extra': obj_utils.dict_or_none,
}
@staticmethod
def _from_db_object(node, db_node):
"""Converts a database entity to a formal object."""
for field in node.fields:
node[field] = db_node[field]
node.obj_reset_changes()
return node
@base.remotable_classmethod
[docs] def get(cls, context, node_id):
"""Find a node based on its id or uuid and return a Node object.
:param node_id: the id *or* uuid of a node.
:returns: a :class:`Node` object.
"""
if strutils.is_int_like(node_id):
return cls.get_by_id(context, node_id)
elif uuidutils.is_uuid_like(node_id):
return cls.get_by_uuid(context, node_id)
else:
raise exception.InvalidIdentity(identity=node_id)
@base.remotable_classmethod
[docs] def get_by_id(cls, context, node_id):
"""Find a node based on its integer id and return a Node object.
:param node_id: the id of a node.
:returns: a :class:`Node` object.
"""
db_node = cls.dbapi.get_node_by_id(node_id)
node = Node._from_db_object(cls(context), db_node)
return node
@base.remotable_classmethod
[docs] def get_by_uuid(cls, context, uuid):
"""Find a node based on uuid and return a Node object.
:param uuid: the uuid of a node.
:returns: a :class:`Node` object.
"""
db_node = cls.dbapi.get_node_by_uuid(uuid)
node = Node._from_db_object(cls(context), db_node)
return node
@base.remotable_classmethod
[docs] def get_by_name(cls, context, name):
"""Find a node based on name and return a Node object.
:param name: the logical name of a node.
:returns: a :class:`Node` object.
"""
db_node = cls.dbapi.get_node_by_name(name)
node = Node._from_db_object(cls(context), db_node)
return node
@base.remotable_classmethod
[docs] def get_by_instance_uuid(cls, context, instance_uuid):
"""Find a node based on the instance uuid and return a Node object.
:param uuid: the uuid of the instance.
:returns: a :class:`Node` object.
"""
db_node = cls.dbapi.get_node_by_instance(instance_uuid)
node = Node._from_db_object(cls(context), db_node)
return node
@base.remotable_classmethod
[docs] def list(cls, context, limit=None, marker=None, sort_key=None,
sort_dir=None, filters=None):
"""Return a list of Node objects.
:param context: Security context.
:param limit: maximum number of resources to return in a single result.
:param marker: pagination marker for large data sets.
:param sort_key: column to sort results by.
:param sort_dir: direction to sort. "asc" or "desc".
:param filters: Filters to apply.
:returns: a list of :class:`Node` object.
"""
db_nodes = cls.dbapi.get_node_list(filters=filters, limit=limit,
marker=marker, sort_key=sort_key,
sort_dir=sort_dir)
return [Node._from_db_object(cls(context), obj) for obj in db_nodes]
@base.remotable_classmethod
[docs] def reserve(cls, context, tag, node_id):
"""Get and reserve a node.
To prevent other ManagerServices from manipulating the given
Node while a Task is performed, mark it reserved by this host.
:param context: Security context.
:param tag: A string uniquely identifying the reservation holder.
:param node_id: A node id or uuid.
:raises: NodeNotFound if the node is not found.
:returns: a :class:`Node` object.
"""
db_node = cls.dbapi.reserve_node(tag, node_id)
node = Node._from_db_object(cls(context), db_node)
return node
@base.remotable_classmethod
[docs] def release(cls, context, tag, node_id):
"""Release the reservation on a node.
:param context: Security context.
:param tag: A string uniquely identifying the reservation holder.
:param node_id: A node id or uuid.
:raises: NodeNotFound if the node is not found.
"""
cls.dbapi.release_node(tag, node_id)
@base.remotable
[docs] def create(self, context=None):
"""Create a Node record in the DB.
Column-wise updates will be made based on the result of
self.what_changed(). If target_power_state is provided,
it will be checked against the in-database copy of the
node before updates are made.
:param context: Security context. NOTE: This should only
be used internally by the indirection_api.
Unfortunately, RPC requires context as the first
argument, even though we don't use it.
A context should be set when instantiating the
object, e.g.: Node(context)
"""
values = self.obj_get_changes()
db_node = self.dbapi.create_node(values)
self._from_db_object(self, db_node)
@base.remotable
[docs] def destroy(self, context=None):
"""Delete the Node from the DB.
:param context: Security context. NOTE: This should only
be used internally by the indirection_api.
Unfortunately, RPC requires context as the first
argument, even though we don't use it.
A context should be set when instantiating the
object, e.g.: Node(context)
"""
self.dbapi.destroy_node(self.uuid)
self.obj_reset_changes()
@base.remotable
[docs] def save(self, context=None):
"""Save updates to this Node.
Column-wise updates will be made based on the result of
self.what_changed(). If target_power_state is provided,
it will be checked against the in-database copy of the
node before updates are made.
:param context: Security context. NOTE: This should only
be used internally by the indirection_api.
Unfortunately, RPC requires context as the first
argument, even though we don't use it.
A context should be set when instantiating the
object, e.g.: Node(context)
"""
updates = self.obj_get_changes()
if 'driver' in updates and 'driver_internal_info' not in updates:
# Clean driver_internal_info when changes driver
self.driver_internal_info = {}
updates = self.obj_get_changes()
self.dbapi.update_node(self.uuid, updates)
self.obj_reset_changes()
@base.remotable
[docs] def refresh(self, context=None):
"""Refresh the object by re-fetching from the DB.
:param context: Security context. NOTE: This should only
be used internally by the indirection_api.
Unfortunately, RPC requires context as the first
argument, even though we don't use it.
A context should be set when instantiating the
object, e.g.: Node(context)
"""
current = self.__class__.get_by_uuid(self._context, self.uuid)
for field in self.fields:
if (hasattr(self, base.get_attrname(field)) and
self[field] != current[field]):
self[field] = current[field]