ea06393fe8
Previously, all node vendor passthru methods required an exclusive lock on the node to validate and start the task. This allows node vendor passthru methods to specify require_exclusive_lock=False in their passthru decorators to let the conductor acquire a shared lock on a node. Change-Id: I43cf43bc5c17f44a735e16c3c5cb744cf6911d27 Closes-Bug: #1481665
1185 lines
44 KiB
Python
1185 lines
44 KiB
Python
# -*- encoding: 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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"""
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Abstract base classes for drivers.
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"""
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import abc
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import collections
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import copy
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import inspect
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import json
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import os
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from futurist import periodics
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from oslo_config import cfg
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from oslo_log import log as logging
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from oslo_utils import excutils
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import six
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from ironic.common import exception
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from ironic.common.i18n import _, _LE, _LW
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from ironic.common import raid
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LOG = logging.getLogger(__name__)
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RAID_CONFIG_SCHEMA = os.path.join(os.path.dirname(__file__),
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'raid_config_schema.json')
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CONF = cfg.CONF
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@six.add_metaclass(abc.ABCMeta)
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class BaseDriver(object):
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"""Base class for all drivers.
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Defines the `core`, `standardized`, and `vendor-specific` interfaces for
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drivers. Any loadable driver must implement all `core` interfaces.
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Actual implementation may instantiate one or more classes, as long as
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the interfaces are appropriate.
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"""
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core_interfaces = []
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standard_interfaces = []
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power = None
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core_interfaces.append('power')
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"""`Core` attribute for managing power state.
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A reference to an instance of :class:PowerInterface.
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"""
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deploy = None
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core_interfaces.append('deploy')
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"""`Core` attribute for managing deployments.
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A reference to an instance of :class:DeployInterface.
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"""
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console = None
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standard_interfaces.append('console')
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"""`Standard` attribute for managing console access.
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A reference to an instance of :class:ConsoleInterface.
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May be None, if unsupported by a driver.
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"""
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rescue = None
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# NOTE(deva): hide rescue from the interface list in Icehouse
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# because the API for this has not been created yet.
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# standard_interfaces.append('rescue')
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"""`Standard` attribute for accessing rescue features.
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A reference to an instance of :class:RescueInterface.
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May be None, if unsupported by a driver.
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"""
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management = None
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"""`Standard` attribute for management related features.
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A reference to an instance of :class:ManagementInterface.
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May be None, if unsupported by a driver.
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"""
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standard_interfaces.append('management')
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boot = None
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"""`Standard` attribute for boot related features.
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A reference to an instance of :class:BootInterface.
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May be None, if unsupported by a driver.
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"""
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standard_interfaces.append('boot')
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vendor = None
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"""Attribute for accessing any vendor-specific extensions.
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A reference to an instance of :class:VendorInterface.
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May be None, if the driver does not implement any vendor extensions.
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"""
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inspect = None
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"""`Standard` attribute for inspection related features.
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A reference to an instance of :class:InspectInterface.
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May be None, if unsupported by a driver.
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"""
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standard_interfaces.append('inspect')
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raid = None
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"""`Standard` attribute for RAID related features.
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||
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A reference to an instance of :class:RaidInterface.
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May be None, if unsupported by a driver.
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"""
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standard_interfaces.append('raid')
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@abc.abstractmethod
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def __init__(self):
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pass
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@property
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def all_interfaces(self):
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return self.core_interfaces + self.standard_interfaces + ['vendor']
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@property
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def non_vendor_interfaces(self):
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return self.core_interfaces + self.standard_interfaces
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def get_properties(self):
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||
"""Get the properties of the driver.
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||
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:returns: dictionary of <property name>:<property description> entries.
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||
"""
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properties = {}
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for iface_name in self.all_interfaces:
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iface = getattr(self, iface_name, None)
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if iface:
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properties.update(iface.get_properties())
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return properties
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class BareDriver(BaseDriver):
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"""A bare driver object which will have interfaces attached later.
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Any composable interfaces should be added as class attributes of this
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class, as well as appended to core_interfaces or standard_interfaces here.
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"""
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def __init__(self):
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pass
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class BaseInterface(object):
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"""A base interface implementing common functions for Driver Interfaces."""
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interface_type = 'base'
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def __new__(cls, *args, **kwargs):
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# Get the list of clean steps when the interface is initialized by
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# the conductor. We use __new__ instead of __init___
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# to avoid breaking backwards compatibility with all the drivers.
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# We want to return all steps, regardless of priority.
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super_new = super(BaseInterface, cls).__new__
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if super_new is object.__new__:
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instance = super_new(cls)
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else:
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instance = super_new(cls, *args, **kwargs)
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instance.clean_steps = []
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for n, method in inspect.getmembers(instance, inspect.ismethod):
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if getattr(method, '_is_clean_step', False):
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# Create a CleanStep to represent this method
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step = {'step': method.__name__,
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'priority': method._clean_step_priority,
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'abortable': method._clean_step_abortable,
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'argsinfo': method._clean_step_argsinfo,
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'interface': instance.interface_type}
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instance.clean_steps.append(step)
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LOG.debug('Found clean steps %(steps)s for interface %(interface)s',
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{'steps': instance.clean_steps,
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'interface': instance.interface_type})
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return instance
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def get_clean_steps(self, task):
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"""Get a list of (enabled and disabled) clean steps for the interface.
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This function will return all clean steps (both enabled and disabled)
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for the interface, in an unordered list.
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:param task: A TaskManager object, useful for interfaces overriding
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this function
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:raises NodeCleaningFailure: if there is a problem getting the steps
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from the driver. For example, when a node (using an agent driver)
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has just been enrolled and the agent isn't alive yet to be queried
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for the available clean steps.
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:returns: A list of clean step dictionaries
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"""
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return self.clean_steps
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def execute_clean_step(self, task, step):
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"""Execute the clean step on task.node.
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A clean step must take a single positional argument: a TaskManager
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object. It may take one or more keyword variable arguments (for
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use with manual cleaning only.)
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||
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A step can be executed synchronously or asynchronously. A step should
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return None if the method has completed synchronously or
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states.CLEANWAIT if the step will continue to execute asynchronously.
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If the step executes asynchronously, it should issue a call to the
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'continue_node_clean' RPC, so the conductor can begin the next
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clean step.
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:param task: A TaskManager object
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:param step: The clean step dictionary representing the step to execute
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:returns: None if this method has completed synchronously, or
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states.CLEANWAIT if the step will continue to execute
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asynchronously.
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"""
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args = step.get('args')
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if args is not None:
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return getattr(self, step['step'])(task, **args)
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else:
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return getattr(self, step['step'])(task)
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@six.add_metaclass(abc.ABCMeta)
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class DeployInterface(BaseInterface):
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"""Interface for deploy-related actions."""
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interface_type = 'deploy'
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||
@abc.abstractmethod
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def get_properties(self):
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||
"""Return the properties of the interface.
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||
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||
:returns: dictionary of <property name>:<property description> entries.
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||
"""
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||
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||
@abc.abstractmethod
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||
def validate(self, task):
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"""Validate the driver-specific Node deployment info.
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||
This method validates whether the 'driver_info' property of the
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task's node contains the required information for this driver to
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deploy images to the node. If invalid, raises an exception; otherwise
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returns None.
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||
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||
:param task: a TaskManager instance containing the node to act on.
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:raises: InvalidParameterValue
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||
:raises: MissingParameterValue
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"""
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||
@abc.abstractmethod
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||
def deploy(self, task):
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"""Perform a deployment to the task's node.
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||
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Perform the necessary work to deploy an image onto the specified node.
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This method will be called after prepare(), which may have already
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performed any preparatory steps, such as pre-caching some data for the
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node.
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:param task: a TaskManager instance containing the node to act on.
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:returns: status of the deploy. One of ironic.common.states.
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||
"""
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||
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||
@abc.abstractmethod
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def tear_down(self, task):
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"""Tear down a previous deployment on the task's node.
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||
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||
Given a node that has been previously deployed to,
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do all cleanup and tear down necessary to "un-deploy" that node.
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||
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:param task: a TaskManager instance containing the node to act on.
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:returns: status of the deploy. One of ironic.common.states.
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"""
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||
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||
@abc.abstractmethod
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||
def prepare(self, task):
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"""Prepare the deployment environment for the task's node.
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||
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||
If preparation of the deployment environment ahead of time is possible,
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||
this method should be implemented by the driver.
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||
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||
If implemented, this method must be idempotent. It may be called
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||
multiple times for the same node on the same conductor, and it may be
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||
called by multiple conductors in parallel. Therefore, it must not
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||
require an exclusive lock.
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||
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This method is called before `deploy`.
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||
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||
:param task: a TaskManager instance containing the node to act on.
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||
"""
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||
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||
@abc.abstractmethod
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||
def clean_up(self, task):
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"""Clean up the deployment environment for the task's node.
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||
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||
If preparation of the deployment environment ahead of time is possible,
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this method should be implemented by the driver. It should erase
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||
anything cached by the `prepare` method.
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||
|
||
If implemented, this method must be idempotent. It may be called
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||
multiple times for the same node on the same conductor, and it may be
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||
called by multiple conductors in parallel. Therefore, it must not
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||
require an exclusive lock.
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||
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||
This method is called before `tear_down`.
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||
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||
:param task: a TaskManager instance containing the node to act on.
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||
"""
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||
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||
@abc.abstractmethod
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||
def take_over(self, task):
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||
"""Take over management of this task's node from a dead conductor.
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||
|
||
If conductors' hosts maintain a static relationship to nodes, this
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||
method should be implemented by the driver to allow conductors to
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||
perform the necessary work during the remapping of nodes to conductors
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||
when a conductor joins or leaves the cluster.
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||
|
||
For example, the PXE driver has an external dependency:
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||
Neutron must forward DHCP BOOT requests to a conductor which has
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||
prepared the tftpboot environment for the given node. When a
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||
conductor goes offline, another conductor must change this setting
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||
in Neutron as part of remapping that node's control to itself.
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||
This is performed within the `takeover` method.
|
||
|
||
:param task: a TaskManager instance containing the node to act on.
|
||
"""
|
||
|
||
def prepare_cleaning(self, task):
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||
"""Prepare the node for cleaning tasks.
|
||
|
||
For example, nodes that use the Ironic Python Agent will need to
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||
boot the ramdisk in order to do in-band cleaning tasks.
|
||
|
||
If the function is asynchronous, the driver will need to handle
|
||
settings node.driver_internal_info['clean_steps'] and node.clean_step,
|
||
as they would be set in ironic.conductor.manager._do_node_clean,
|
||
but cannot be set when this is asynchronous. After, the interface
|
||
should make an RPC call to continue_node_cleaning to start cleaning.
|
||
|
||
NOTE(JoshNang) this should be moved to BootInterface when it gets
|
||
implemented.
|
||
|
||
:param task: a TaskManager instance containing the node to act on.
|
||
:returns: If this function is going to be asynchronous, should return
|
||
`states.CLEANWAIT`. Otherwise, should return `None`. The interface
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||
will need to call _get_cleaning_steps and then RPC to
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||
continue_node_cleaning
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||
"""
|
||
pass
|
||
|
||
def tear_down_cleaning(self, task):
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||
"""Tear down after cleaning is completed.
|
||
|
||
Given that cleaning is complete, do all cleanup and tear
|
||
down necessary to allow the node to be deployed to again.
|
||
|
||
NOTE(JoshNang) this should be moved to BootInterface when it gets
|
||
implemented.
|
||
|
||
:param task: a TaskManager instance containing the node to act on.
|
||
"""
|
||
pass
|
||
|
||
|
||
@six.add_metaclass(abc.ABCMeta)
|
||
class BootInterface(object):
|
||
"""Interface for boot-related actions."""
|
||
|
||
@abc.abstractmethod
|
||
def get_properties(self):
|
||
"""Return the properties of the interface.
|
||
|
||
:returns: dictionary of <property name>:<property description> entries.
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def validate(self, task):
|
||
"""Validate the driver-specific info for booting.
|
||
|
||
This method validates the driver-specific info for booting the
|
||
ramdisk and instance on the node. If invalid, raises an
|
||
exception; otherwise returns None.
|
||
|
||
:param task: a task from TaskManager.
|
||
:returns: None
|
||
:raises: InvalidParameterValue
|
||
:raises: MissingParameterValue
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def prepare_ramdisk(self, task, ramdisk_params):
|
||
"""Prepares the boot of Ironic ramdisk.
|
||
|
||
This method prepares the boot of the deploy ramdisk after
|
||
reading relevant information from the node's database.
|
||
|
||
:param task: a task from TaskManager.
|
||
:param ramdisk_params: the options to be passed to the ironic ramdisk.
|
||
Different implementations might want to boot the ramdisk in
|
||
different ways by passing parameters to them. For example,
|
||
|
||
- When DIB ramdisk is booted to deploy a node, it takes the
|
||
parameters iscsi_target_iqn, deployment_id, ironic_api_url, etc.
|
||
- When Agent ramdisk is booted to deploy a node, it takes the
|
||
parameters ipa-driver-name, ipa-api-url, root_device, etc.
|
||
|
||
Other implementations can make use of ramdisk_params to pass such
|
||
information. Different implementations of boot interface will
|
||
have different ways of passing parameters to the ramdisk.
|
||
:returns: None
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def clean_up_ramdisk(self, task):
|
||
"""Cleans up the boot of ironic ramdisk.
|
||
|
||
This method cleans up the environment that was setup for booting the
|
||
deploy ramdisk.
|
||
|
||
:param task: a task from TaskManager.
|
||
:returns: None
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def prepare_instance(self, task):
|
||
"""Prepares the boot of instance.
|
||
|
||
This method prepares the boot of the instance after reading
|
||
relevant information from the node's database.
|
||
|
||
:param task: a task from TaskManager.
|
||
:returns: None
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def clean_up_instance(self, task):
|
||
"""Cleans up the boot of instance.
|
||
|
||
This method cleans up the environment that was setup for booting
|
||
the instance.
|
||
|
||
:param task: a task from TaskManager.
|
||
:returns: None
|
||
"""
|
||
|
||
|
||
@six.add_metaclass(abc.ABCMeta)
|
||
class PowerInterface(BaseInterface):
|
||
"""Interface for power-related actions."""
|
||
interface_type = 'power'
|
||
|
||
@abc.abstractmethod
|
||
def get_properties(self):
|
||
"""Return the properties of the interface.
|
||
|
||
:returns: dictionary of <property name>:<property description> entries.
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def validate(self, task):
|
||
"""Validate the driver-specific Node power info.
|
||
|
||
This method validates whether the 'driver_info' property of the
|
||
supplied node contains the required information for this driver to
|
||
manage the power state of the node. If invalid, raises an exception;
|
||
otherwise, returns None.
|
||
|
||
:param task: a TaskManager instance containing the node to act on.
|
||
:raises: InvalidParameterValue
|
||
:raises: MissingParameterValue
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def get_power_state(self, task):
|
||
"""Return the power state of the task's node.
|
||
|
||
:param task: a TaskManager instance containing the node to act on.
|
||
:raises: MissingParameterValue if a required parameter is missing.
|
||
:returns: a power state. One of :mod:`ironic.common.states`.
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def set_power_state(self, task, power_state):
|
||
"""Set the power state of the task's node.
|
||
|
||
:param task: a TaskManager instance containing the node to act on.
|
||
:param power_state: Any power state from :mod:`ironic.common.states`.
|
||
:raises: MissingParameterValue if a required parameter is missing.
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def reboot(self, task):
|
||
"""Perform a hard reboot of the task's node.
|
||
|
||
Drivers are expected to properly handle case when node is powered off
|
||
by powering it on.
|
||
|
||
:param task: a TaskManager instance containing the node to act on.
|
||
:raises: MissingParameterValue if a required parameter is missing.
|
||
"""
|
||
|
||
|
||
@six.add_metaclass(abc.ABCMeta)
|
||
class ConsoleInterface(object):
|
||
"""Interface for console-related actions."""
|
||
|
||
@abc.abstractmethod
|
||
def get_properties(self):
|
||
"""Return the properties of the interface.
|
||
|
||
:returns: dictionary of <property name>:<property description> entries.
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def validate(self, task):
|
||
"""Validate the driver-specific Node console info.
|
||
|
||
This method validates whether the 'driver_info' property of the
|
||
supplied node contains the required information for this driver to
|
||
provide console access to the Node. If invalid, raises an exception;
|
||
otherwise returns None.
|
||
|
||
:param task: a TaskManager instance containing the node to act on.
|
||
:raises: InvalidParameterValue
|
||
:raises: MissingParameterValue
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def start_console(self, task):
|
||
"""Start a remote console for the task's node.
|
||
|
||
This method should not raise an exception if console already started.
|
||
|
||
:param task: a TaskManager instance containing the node to act on.
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def stop_console(self, task):
|
||
"""Stop the remote console session for the task's node.
|
||
|
||
:param task: a TaskManager instance containing the node to act on.
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def get_console(self, task):
|
||
"""Get connection information about the console.
|
||
|
||
This method should return the necessary information for the
|
||
client to access the console.
|
||
|
||
:param task: a TaskManager instance containing the node to act on.
|
||
:returns: the console connection information.
|
||
"""
|
||
|
||
|
||
@six.add_metaclass(abc.ABCMeta)
|
||
class RescueInterface(object):
|
||
"""Interface for rescue-related actions."""
|
||
|
||
@abc.abstractmethod
|
||
def get_properties(self):
|
||
"""Return the properties of the interface.
|
||
|
||
:returns: dictionary of <property name>:<property description> entries.
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def validate(self, task):
|
||
"""Validate the rescue info stored in the node' properties.
|
||
|
||
If invalid, raises an exception; otherwise returns None.
|
||
|
||
:param task: a TaskManager instance containing the node to act on.
|
||
:raises: InvalidParameterValue
|
||
:raises: MissingParameterValue
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def rescue(self, task):
|
||
"""Boot the task's node into a rescue environment.
|
||
|
||
:param task: a TaskManager instance containing the node to act on.
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def unrescue(self, task):
|
||
"""Tear down the rescue environment, and return to normal.
|
||
|
||
:param task: a TaskManager instance containing the node to act on.
|
||
"""
|
||
|
||
|
||
# Representation of a single vendor method metadata
|
||
VendorMetadata = collections.namedtuple('VendorMetadata', ['method',
|
||
'metadata'])
|
||
|
||
|
||
def _passthru(http_methods, method=None, async=True, driver_passthru=False,
|
||
description=None, attach=False, require_exclusive_lock=True):
|
||
"""A decorator for registering a function as a passthru function.
|
||
|
||
Decorator ensures function is ready to catch any ironic exceptions
|
||
and reraise them after logging the issue. It also catches non-ironic
|
||
exceptions reraising them as a VendorPassthruException after writing
|
||
a log.
|
||
|
||
Logs need to be added because even though the exception is being
|
||
reraised, it won't be handled if it is an async. call.
|
||
|
||
:param http_methods: A list of supported HTTP methods by the vendor
|
||
function.
|
||
:param method: an arbitrary string describing the action to be taken.
|
||
:param async: Boolean value. If True invoke the passthru function
|
||
asynchronously; if False, synchronously. If a passthru
|
||
function touches the BMC we strongly recommend it to
|
||
run asynchronously. Defaults to True.
|
||
:param driver_passthru: Boolean value. True if this is a driver vendor
|
||
passthru method, and False if it is a node
|
||
vendor passthru method.
|
||
:param attach: Boolean value. True if the return value should be
|
||
attached to the response object, and False if the return
|
||
value should be returned in the response body.
|
||
Defaults to False.
|
||
:param description: a string shortly describing what the method does.
|
||
:param require_exclusive_lock: Boolean value. Only valid for node passthru
|
||
methods. If True, lock the node before
|
||
validate() and invoking the vendor method.
|
||
The node remains locked during execution
|
||
for a synchronous passthru method. If False,
|
||
don't lock the node. Defaults to True.
|
||
"""
|
||
def handle_passthru(func):
|
||
api_method = method
|
||
if api_method is None:
|
||
api_method = func.__name__
|
||
|
||
supported_ = [i.upper() for i in http_methods]
|
||
description_ = description or ''
|
||
metadata = VendorMetadata(api_method, {'http_methods': supported_,
|
||
'async': async,
|
||
'description': description_,
|
||
'attach': attach})
|
||
if driver_passthru:
|
||
func._driver_metadata = metadata
|
||
else:
|
||
metadata[1]['require_exclusive_lock'] = require_exclusive_lock
|
||
func._vendor_metadata = metadata
|
||
|
||
passthru_logmessage = _LE('vendor_passthru failed with method %s')
|
||
|
||
@six.wraps(func)
|
||
def passthru_handler(*args, **kwargs):
|
||
try:
|
||
return func(*args, **kwargs)
|
||
except exception.IronicException as e:
|
||
with excutils.save_and_reraise_exception():
|
||
LOG.exception(passthru_logmessage, api_method)
|
||
except Exception as e:
|
||
# catch-all in case something bubbles up here
|
||
LOG.exception(passthru_logmessage, api_method)
|
||
raise exception.VendorPassthruException(message=e)
|
||
return passthru_handler
|
||
return handle_passthru
|
||
|
||
|
||
def passthru(http_methods, method=None, async=True, description=None,
|
||
attach=False, require_exclusive_lock=True):
|
||
return _passthru(http_methods, method, async, driver_passthru=False,
|
||
description=description, attach=attach,
|
||
require_exclusive_lock=require_exclusive_lock)
|
||
|
||
|
||
def driver_passthru(http_methods, method=None, async=True, description=None,
|
||
attach=False):
|
||
return _passthru(http_methods, method, async, driver_passthru=True,
|
||
description=description, attach=attach)
|
||
|
||
|
||
@six.add_metaclass(abc.ABCMeta)
|
||
class VendorInterface(object):
|
||
"""Interface for all vendor passthru functionality.
|
||
|
||
Additional vendor- or driver-specific capabilities should be
|
||
implemented as a method in the class inheriting from this class and
|
||
use the @passthru or @driver_passthru decorators.
|
||
|
||
Methods decorated with @driver_passthru should be short-lived because
|
||
it is a blocking call.
|
||
"""
|
||
|
||
def __new__(cls, *args, **kwargs):
|
||
super_new = super(VendorInterface, cls).__new__
|
||
if super_new is object.__new__:
|
||
inst = super_new(cls)
|
||
else:
|
||
inst = super_new(cls, *args, **kwargs)
|
||
|
||
inst.vendor_routes = {}
|
||
inst.driver_routes = {}
|
||
|
||
for name, ref in inspect.getmembers(inst, predicate=inspect.ismethod):
|
||
vmeta = getattr(ref, '_vendor_metadata', None)
|
||
dmeta = getattr(ref, '_driver_metadata', None)
|
||
|
||
if vmeta is not None:
|
||
metadata = copy.deepcopy(vmeta.metadata)
|
||
metadata['func'] = ref
|
||
inst.vendor_routes.update({vmeta.method: metadata})
|
||
|
||
if dmeta is not None:
|
||
metadata = copy.deepcopy(dmeta.metadata)
|
||
metadata['func'] = ref
|
||
inst.driver_routes.update({dmeta.method: metadata})
|
||
|
||
return inst
|
||
|
||
@abc.abstractmethod
|
||
def get_properties(self):
|
||
"""Return the properties of the interface.
|
||
|
||
:returns: dictionary of <property name>:<property description> entries.
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def validate(self, task, method=None, **kwargs):
|
||
"""Validate vendor-specific actions.
|
||
|
||
If invalid, raises an exception; otherwise returns None.
|
||
|
||
:param task: a task from TaskManager.
|
||
:param method: method to be validated
|
||
:param kwargs: info for action.
|
||
:raises: UnsupportedDriverExtension if 'method' can not be mapped to
|
||
the supported interfaces.
|
||
:raises: InvalidParameterValue if kwargs does not contain 'method'.
|
||
:raises: MissingParameterValue
|
||
"""
|
||
|
||
def driver_validate(self, method, **kwargs):
|
||
"""Validate driver-vendor-passthru actions.
|
||
|
||
If invalid, raises an exception; otherwise returns None.
|
||
|
||
:param method: method to be validated
|
||
:param kwargs: info for action.
|
||
:raises: MissingParameterValue if kwargs does not contain
|
||
certain parameter.
|
||
:raises: InvalidParameterValue if parameter does not match.
|
||
"""
|
||
pass
|
||
|
||
|
||
@six.add_metaclass(abc.ABCMeta)
|
||
class ManagementInterface(BaseInterface):
|
||
"""Interface for management related actions."""
|
||
interface_type = 'management'
|
||
|
||
@abc.abstractmethod
|
||
def get_properties(self):
|
||
"""Return the properties of the interface.
|
||
|
||
:returns: dictionary of <property name>:<property description> entries.
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def validate(self, task):
|
||
"""Validate the driver-specific management information.
|
||
|
||
If invalid, raises an exception; otherwise returns None.
|
||
|
||
:param task: a task from TaskManager.
|
||
:raises: InvalidParameterValue
|
||
:raises: MissingParameterValue
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def get_supported_boot_devices(self, task):
|
||
"""Get a list of the supported boot devices.
|
||
|
||
:param task: a task from TaskManager.
|
||
:returns: A list with the supported boot devices defined
|
||
in :mod:`ironic.common.boot_devices`.
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def set_boot_device(self, task, device, persistent=False):
|
||
"""Set the boot device for a node.
|
||
|
||
Set the boot device to use on next reboot of the node.
|
||
|
||
:param task: a task from TaskManager.
|
||
:param device: the boot device, one of
|
||
:mod:`ironic.common.boot_devices`.
|
||
:param persistent: Boolean value. True if the boot device will
|
||
persist to all future boots, False if not.
|
||
Default: False.
|
||
:raises: InvalidParameterValue if an invalid boot device is
|
||
specified.
|
||
:raises: MissingParameterValue if a required parameter is missing
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def get_boot_device(self, task):
|
||
"""Get the current boot device for a node.
|
||
|
||
Provides the current boot device of the node. Be aware that not
|
||
all drivers support this.
|
||
|
||
:param task: a task from TaskManager.
|
||
:raises: MissingParameterValue if a required parameter is missing
|
||
:returns: a dictionary containing:
|
||
|
||
:boot_device:
|
||
the boot device, one of :mod:`ironic.common.boot_devices` or
|
||
None if it is unknown.
|
||
:persistent:
|
||
Whether the boot device will persist to all future boots or
|
||
not, None if it is unknown.
|
||
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def get_sensors_data(self, task):
|
||
"""Get sensors data method.
|
||
|
||
:param task: a TaskManager instance.
|
||
:raises: FailedToGetSensorData when getting the sensor data fails.
|
||
:raises: FailedToParseSensorData when parsing sensor data fails.
|
||
:returns: returns a consistent format dict of sensor data grouped by
|
||
sensor type, which can be processed by Ceilometer.
|
||
eg,
|
||
|
||
::
|
||
|
||
{
|
||
'Sensor Type 1': {
|
||
'Sensor ID 1': {
|
||
'Sensor Reading': 'current value',
|
||
'key1': 'value1',
|
||
'key2': 'value2'
|
||
},
|
||
'Sensor ID 2': {
|
||
'Sensor Reading': 'current value',
|
||
'key1': 'value1',
|
||
'key2': 'value2'
|
||
}
|
||
},
|
||
'Sensor Type 2': {
|
||
'Sensor ID 3': {
|
||
'Sensor Reading': 'current value',
|
||
'key1': 'value1',
|
||
'key2': 'value2'
|
||
},
|
||
'Sensor ID 4': {
|
||
'Sensor Reading': 'current value',
|
||
'key1': 'value1',
|
||
'key2': 'value2'
|
||
}
|
||
}
|
||
}
|
||
"""
|
||
|
||
|
||
@six.add_metaclass(abc.ABCMeta)
|
||
class InspectInterface(object):
|
||
"""Interface for inspection-related actions."""
|
||
|
||
ESSENTIAL_PROPERTIES = {'memory_mb', 'local_gb', 'cpus', 'cpu_arch'}
|
||
"""The properties required by scheduler/deploy."""
|
||
|
||
@abc.abstractmethod
|
||
def get_properties(self):
|
||
"""Return the properties of the interface.
|
||
|
||
:returns: dictionary of <property name>:<property description> entries.
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def validate(self, task):
|
||
"""Validate the driver-specific inspection information.
|
||
|
||
If invalid, raises an exception; otherwise returns None.
|
||
|
||
:param task: a task from TaskManager.
|
||
:raises: InvalidParameterValue
|
||
:raises: MissingParameterValue
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def inspect_hardware(self, task):
|
||
"""Inspect hardware.
|
||
|
||
Inspect hardware to obtain the essential & additional hardware
|
||
properties.
|
||
|
||
:param task: a task from TaskManager.
|
||
:raises: HardwareInspectionFailure, if unable to get essential
|
||
hardware properties.
|
||
:returns: resulting state of the inspection i.e. states.MANAGEABLE
|
||
or None.
|
||
"""
|
||
|
||
|
||
class RAIDInterface(BaseInterface):
|
||
interface_type = 'raid'
|
||
|
||
def __init__(self):
|
||
"""Constructor for RAIDInterface class."""
|
||
with open(RAID_CONFIG_SCHEMA, 'r') as raid_schema_fobj:
|
||
self.raid_schema = json.load(raid_schema_fobj)
|
||
|
||
@abc.abstractmethod
|
||
def get_properties(self):
|
||
"""Return the properties of the interface.
|
||
|
||
:returns: dictionary of <property name>:<property description> entries.
|
||
"""
|
||
|
||
def validate(self, task):
|
||
"""Validates the RAID Interface.
|
||
|
||
This method validates the properties defined by Ironic for RAID
|
||
configuration. Driver implementations of this interface can override
|
||
this method for doing more validations (such as BMC's credentials).
|
||
|
||
:param task: a TaskManager instance.
|
||
:raises: InvalidParameterValue, if the RAID configuration is invalid.
|
||
:raises: MissingParameterValue, if some parameters are missing.
|
||
"""
|
||
target_raid_config = task.node.target_raid_config
|
||
if not target_raid_config:
|
||
return
|
||
self.validate_raid_config(task, target_raid_config)
|
||
|
||
def validate_raid_config(self, task, raid_config):
|
||
"""Validates the given RAID configuration.
|
||
|
||
This method validates the given RAID configuration. Driver
|
||
implementations of this interface can override this method to support
|
||
custom parameters for RAID configuration.
|
||
|
||
:param task: a TaskManager instance.
|
||
:param raid_config: The RAID configuration to validate.
|
||
:raises: InvalidParameterValue, if the RAID configuration is invalid.
|
||
"""
|
||
raid.validate_configuration(raid_config, self.raid_schema)
|
||
|
||
@abc.abstractmethod
|
||
def create_configuration(self, task,
|
||
create_root_volume=True,
|
||
create_nonroot_volumes=True):
|
||
"""Creates RAID configuration on the given node.
|
||
|
||
This method creates a RAID configuration on the given node.
|
||
It assumes that the target RAID configuration is already
|
||
available in node.target_raid_config.
|
||
Implementations of this interface are supposed to read the
|
||
RAID configuration from node.target_raid_config. After the
|
||
RAID configuration is done (either in this method OR in a call-back
|
||
method), ironic.common.raid.update_raid_info()
|
||
may be called to sync the node's RAID-related information with the
|
||
RAID configuration applied on the node.
|
||
|
||
:param task: a TaskManager instance.
|
||
:param create_root_volume: Setting this to False indicates
|
||
not to create root volume that is specified in the node's
|
||
target_raid_config. Default value is True.
|
||
:param create_nonroot_volumes: Setting this to False indicates
|
||
not to create non-root volumes (all except the root volume) in the
|
||
node's target_raid_config. Default value is True.
|
||
:returns: states.CLEANWAIT if RAID configuration is in progress
|
||
asynchronously or None if it is complete.
|
||
"""
|
||
|
||
@abc.abstractmethod
|
||
def delete_configuration(self, task):
|
||
"""Deletes RAID configuration on the given node.
|
||
|
||
This method deletes the RAID configuration on the give node.
|
||
After RAID configuration is deleted, node.raid_config should be
|
||
cleared by the implementation.
|
||
|
||
:param task: a TaskManager instance.
|
||
:returns: states.CLEANWAIT if deletion is in progress
|
||
asynchronously or None if it is complete.
|
||
"""
|
||
|
||
def get_logical_disk_properties(self):
|
||
"""Get the properties that can be specified for logical disks.
|
||
|
||
This method returns a dictionary containing the properties that can
|
||
be specified for logical disks and a textual description for them.
|
||
|
||
:returns: A dictionary containing properties that can be mentioned for
|
||
logical disks and a textual description for them.
|
||
"""
|
||
return raid.get_logical_disk_properties(self.raid_schema)
|
||
|
||
|
||
def _validate_argsinfo(argsinfo):
|
||
"""Validate args info.
|
||
|
||
This method validates args info, so that the values are the expected
|
||
data types and required values are specified.
|
||
|
||
:param argsinfo: a dictionary of keyword arguments where key is the name of
|
||
the argument and value is a dictionary as follows::
|
||
|
||
‘description’: <description>. Required. This should include
|
||
possible values.
|
||
‘required’: Boolean. Optional; default is False. True if this
|
||
argument is required. If so, it must be specified in
|
||
the clean request; false if it is optional.
|
||
:raises InvalidParameterValue if any of the arguments are invalid
|
||
"""
|
||
if not argsinfo:
|
||
return
|
||
|
||
if not isinstance(argsinfo, dict):
|
||
raise exception.InvalidParameterValue(
|
||
_('"argsinfo" must be a dictionary instead of "%s"') %
|
||
argsinfo)
|
||
for (arg, info) in argsinfo.items():
|
||
if not isinstance(info, dict):
|
||
raise exception.InvalidParameterValue(
|
||
_('Argument "%(arg)s" must be a dictionary instead of '
|
||
'"%(val)s".') % {'arg': arg, 'val': info})
|
||
has_description = False
|
||
for (key, value) in info.items():
|
||
if key == 'description':
|
||
if not isinstance(value, six.string_types):
|
||
raise exception.InvalidParameterValue(
|
||
_('For argument "%(arg)s", "description" must be a '
|
||
'string value instead of "%(value)s".') %
|
||
{'arg': arg, 'value': value})
|
||
has_description = True
|
||
elif key == 'required':
|
||
if not isinstance(value, bool):
|
||
raise exception.InvalidParameterValue(
|
||
_('For argument "%(arg)s", "required" must be a '
|
||
'Boolean value instead of "%(value)s".') %
|
||
{'arg': arg, 'value': value})
|
||
else:
|
||
raise exception.InvalidParameterValue(
|
||
_('Argument "%(arg)s" has an invalid key named "%(key)s". '
|
||
'It must be "description" or "required".')
|
||
% {'key': key, 'arg': arg})
|
||
if not has_description:
|
||
raise exception.InvalidParameterValue(
|
||
_('Argument "%(arg)s" is missing a "description".') %
|
||
{'arg': arg})
|
||
|
||
|
||
def clean_step(priority, abortable=False, argsinfo=None):
|
||
"""Decorator for cleaning steps.
|
||
|
||
Cleaning steps may be used in manual or automated cleaning.
|
||
|
||
For automated cleaning, only steps with priorities greater than 0 are
|
||
used. These steps are ordered by priority from highest value to lowest
|
||
value. For steps with the same priority, they are ordered by driver
|
||
interface priority (see conductor.manager.CLEANING_INTERFACE_PRIORITY).
|
||
execute_clean_step() will be called on each step.
|
||
|
||
For manual cleaning, the clean steps will be executed in a similar fashion
|
||
to automated cleaning, but the steps and order of execution must be
|
||
explicitly specified by the user when invoking the cleaning API.
|
||
|
||
Decorated clean steps must take as the only positional argument, a
|
||
TaskManager object. Clean steps used in manual cleaning may also take
|
||
keyword variable arguments (as described in argsinfo).
|
||
|
||
Clean steps can be either synchronous or asynchronous. If the step is
|
||
synchronous, it should return `None` when finished, and the conductor
|
||
will continue on to the next step. While the clean step is executing, the
|
||
node will be in `states.CLEANING` provision state. If the step is
|
||
asynchronous, the step should return `states.CLEANWAIT` to the
|
||
conductor before it starts the asynchronous work. When the step is
|
||
complete, the step should make an RPC call to `continue_node_clean` to
|
||
move to the next step in cleaning. The node will be in `states.CLEANWAIT`
|
||
provision state during the asynchronous work.
|
||
|
||
Examples::
|
||
|
||
class MyInterface(base.BaseInterface):
|
||
# CONF.example_cleaning_priority should be an int CONF option
|
||
@base.clean_step(priority=CONF.example_cleaning_priority)
|
||
def example_cleaning(self, task):
|
||
# do some cleaning
|
||
|
||
@base.clean_step(priority=0, abortable=True, argsinfo=
|
||
{'size': {'description': 'size of widget (MB)',
|
||
'required': True}})
|
||
def advanced_clean(self, task, **kwargs):
|
||
# do some advanced cleaning
|
||
|
||
:param priority: an integer priority, should be a CONF option
|
||
:param abortable: Boolean value. Whether the clean step is abortable
|
||
or not; defaults to False.
|
||
:param argsinfo: a dictionary of keyword arguments where key is the name of
|
||
the argument and value is a dictionary as follows::
|
||
|
||
‘description’: <description>. Required. This should include
|
||
possible values.
|
||
‘required’: Boolean. Optional; default is False. True if this
|
||
argument is required. If so, it must be specified in
|
||
the clean request; false if it is optional.
|
||
:raises InvalidParameterValue if any of the arguments are invalid
|
||
"""
|
||
def decorator(func):
|
||
func._is_clean_step = True
|
||
if isinstance(priority, int):
|
||
func._clean_step_priority = priority
|
||
else:
|
||
raise exception.InvalidParameterValue(
|
||
_('"priority" must be an integer value instead of "%s"')
|
||
% priority)
|
||
|
||
if isinstance(abortable, bool):
|
||
func._clean_step_abortable = abortable
|
||
else:
|
||
raise exception.InvalidParameterValue(
|
||
_('"abortable" must be a Boolean value instead of "%s"')
|
||
% abortable)
|
||
|
||
_validate_argsinfo(argsinfo)
|
||
func._clean_step_argsinfo = argsinfo
|
||
return func
|
||
return decorator
|
||
|
||
|
||
def driver_periodic_task(**kwargs):
|
||
"""Decorator for a driver-specific periodic task.
|
||
|
||
Deprecated, please use futurist directly.
|
||
Example::
|
||
|
||
from futurist import periodics
|
||
|
||
class MyDriver(base.BaseDriver):
|
||
@periodics.periodic(spacing=42)
|
||
def task(self, manager, context):
|
||
# do some job
|
||
|
||
:param kwargs: arguments to pass to @periodics.periodic
|
||
"""
|
||
LOG.warning(_LW('driver_periodic_task decorator is deprecated, please '
|
||
'use futurist.periodics.periodic directly'))
|
||
# Previously we accepted more arguments, make a backward compatibility
|
||
# layer for out-of-tree drivers.
|
||
new_kwargs = {}
|
||
for arg in ('spacing', 'enabled', 'run_immediately'):
|
||
try:
|
||
new_kwargs[arg] = kwargs.pop(arg)
|
||
except KeyError:
|
||
pass
|
||
|
||
# NOTE(jroll) this is here to avoid a circular import when a module
|
||
# imports ironic.common.service. Normally I would balk at this, but this
|
||
# option is deprecared for removal and this code only runs at startup.
|
||
CONF.import_opt('periodic_interval', 'ironic.common.service')
|
||
new_kwargs.setdefault('spacing', CONF.periodic_interval)
|
||
|
||
if kwargs:
|
||
LOG.warning(_LW('The following arguments are not supported by '
|
||
'futurist.periodics.periodic and are ignored: %s'),
|
||
', '.join(kwargs))
|
||
|
||
return periodics.periodic(**new_kwargs)
|