7d85b35c84
Prevent each driver comming online one at a time. So that /driver returns nothign until all interfaces are registered Story: #2008423 Task: #41368 Change-Id: I6ef3e6e36b96106faf4581509d9219e5c535a6d8
173 lines
7.8 KiB
Python
173 lines
7.8 KiB
Python
# coding=utf-8
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#
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# Copyright 2013 Hewlett-Packard Development Company, L.P.
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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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from oslo_versionedobjects import base as object_base
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from ironic.common.i18n import _
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from ironic.common import utils
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from ironic.db import api as db_api
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from ironic.objects import base
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from ironic.objects import fields as object_fields
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@base.IronicObjectRegistry.register
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class Conductor(base.IronicObject, object_base.VersionedObjectDictCompat):
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# Version 1.0: Initial version
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# Version 1.1: Add register() and unregister(), make the context parameter
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# to touch() optional.
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# Version 1.2: Add register_hardware_interfaces() and
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# unregister_all_hardware_interfaces()
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# Version 1.3: Add conductor_group field.
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VERSION = '1.3'
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dbapi = db_api.get_instance()
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fields = {
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'id': object_fields.IntegerField(),
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'drivers': object_fields.ListOfStringsField(nullable=True),
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'hostname': object_fields.StringField(),
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'conductor_group': object_fields.StringField(),
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}
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@classmethod
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def list(cls, context, limit=None, marker=None, sort_key=None,
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sort_dir=None):
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"""Return a list of Conductor objects.
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:param cls: the :class:`Conductor`
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:param context: Security context.
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:param limit: maximum number of resources to return in a single result.
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:param marker: pagination marker for large data sets.
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:param sort_key: column to sort results by.
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:param sort_dir: direction to sort. "asc" or "desc".
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:returns: a list of :class:`Conductor` object.
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"""
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db_conductors = cls.dbapi.get_conductor_list(limit=limit,
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marker=marker,
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sort_key=sort_key,
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sort_dir=sort_dir)
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return cls._from_db_object_list(context, db_conductors)
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# NOTE(xek): We don't want to enable RPC on this call just yet. Remotable
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# methods can be used in the future to replace current explicit RPC calls.
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# Implications of calling new remote procedures should be thought through.
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# @object_base.remotable_classmethod
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@classmethod
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def get_by_hostname(cls, context, hostname, online=True):
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"""Get a Conductor record by its hostname.
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:param cls: the :class:`Conductor`
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:param context: Security context
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:param hostname: the hostname on which a Conductor is running
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:param online: Specify the expected ``online`` field value for the
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conductor to be retrieved. The ``online`` field is
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ignored if this value is set to None.
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:returns: a :class:`Conductor` object.
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"""
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db_obj = cls.dbapi.get_conductor(hostname, online=online)
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conductor = cls._from_db_object(context, cls(), db_obj)
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return conductor
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def save(self, context):
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"""Save is not supported by Conductor objects."""
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raise NotImplementedError(
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_('Cannot update a conductor record directly.'))
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# NOTE(xek): We don't want to enable RPC on this call just yet. Remotable
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# methods can be used in the future to replace current explicit RPC calls.
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# Implications of calling new remote procedures should be thought through.
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# @object_base.remotable
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def refresh(self, context=None):
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"""Loads and applies updates for this Conductor.
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Loads a :class:`Conductor` with the same uuid from the database and
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checks for updated attributes. Updates are applied from
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the loaded chassis column by column, if there are any updates.
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:param context: Security context. NOTE: This should only
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be used internally by the indirection_api.
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Unfortunately, RPC requires context as the first
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argument, even though we don't use it.
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A context should be set when instantiating the
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object, e.g.: Conductor(context)
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"""
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current = self.get_by_hostname(self._context, hostname=self.hostname)
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self.obj_refresh(current)
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# NOTE(xek): We don't want to enable RPC on this call just yet. Remotable
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# methods can be used in the future to replace current explicit RPC calls.
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# Implications of calling new remote procedures should be thought through.
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# @object_base.remotable
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def touch(self, context=None):
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"""Touch this conductor's DB record, marking it as up-to-date."""
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self.dbapi.touch_conductor(self.hostname)
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# NOTE(xek): We don't want to enable RPC on this call just yet. Remotable
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# methods can be used in the future to replace current explicit RPC calls.
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# Implications of calling new remote procedures should be thought through.
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# @object_base.remotable
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@classmethod
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def register(cls, context, hostname, drivers, conductor_group,
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update_existing=False):
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"""Register an active conductor with the cluster.
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:param cls: the :class:`Conductor`
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:param context: Security context
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:param hostname: the hostname on which the conductor will run
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:param drivers: the list of drivers enabled in the conductor
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:param conductor_group: conductor group to join, used for
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node:conductor affinity.
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:param update_existing: When false, registration will raise an
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exception when a conflicting online record
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is found. When true, will overwrite the
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existing record. Default: False.
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:raises: ConductorAlreadyRegistered
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:returns: a :class:`Conductor` object.
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"""
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utils.validate_conductor_group(conductor_group)
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db_cond = cls.dbapi.register_conductor(
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{'hostname': hostname,
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'drivers': drivers,
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'conductor_group': conductor_group.lower(),
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'version': cls.get_target_version()},
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update_existing=update_existing)
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return cls._from_db_object(context, cls(), db_cond)
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# NOTE(xek): We don't want to enable RPC on this call just yet. Remotable
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# methods can be used in the future to replace current explicit RPC calls.
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# Implications of calling new remote procedures should be thought through.
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# @object_base.remotable
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def unregister(self, context=None):
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"""Remove this conductor from the service registry."""
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self.unregister_all_hardware_interfaces()
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self.dbapi.unregister_conductor(self.hostname)
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def register_hardware_interfaces(self, interfaces):
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"""Register hardware interfaces with the conductor.
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:param interfaces: List of interface to register, each entry should
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be a dictionary conaining "hardware_type", "interface_type",
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"interface_name" and "default", e.g.
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{'hardware_type': 'hardware-type', 'interface_type': 'deploy',
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'interface_name': 'iscsi', 'default': True}
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"""
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self.dbapi.register_conductor_hardware_interfaces(self.id, interfaces)
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def unregister_all_hardware_interfaces(self):
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"""Unregister all hardware interfaces for this conductor."""
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self.dbapi.unregister_conductor_hardware_interfaces(self.id)
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