openstack
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ironic
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ironic/ironic/api/controllers/v1/driver.py

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# Copyright 2013 Red Hat, Inc.
# All Rights Reserved.
#
# 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 http import client as http_client
from ironic_lib import metrics_utils
from pecan import rest
from ironic import api
from ironic.api.controllers import link
from ironic.api.controllers.v1 import utils as api_utils
from ironic.api import method
from ironic.common import args
from ironic.common import exception
from ironic.common.i18n import _
from ironic.drivers import base as driver_base
METRICS = metrics_utils.get_metrics_logger(__name__)
# Property information for drivers:
# key = driver name;
# value = dictionary of properties of that driver:
# key = property name.
# value = description of the property.
# NOTE(rloo). This is cached for the lifetime of the API service. If one or
# more conductor services are restarted with new driver versions, the API
# service should be restarted.
_DRIVER_PROPERTIES = {}
# Vendor information for drivers:
# key = driver name;
# value = dictionary of vendor methods of that driver:
# key = method name.
# value = dictionary with the metadata of that method.
# NOTE(lucasagomes). This is cached for the lifetime of the API
# service. If one or more conductor services are restarted with new driver
# versions, the API service should be restarted.
_VENDOR_METHODS = {}
# RAID (logical disk) configuration information for drivers:
# key = driver name;
# value = dictionary of RAID configuration information of that driver:
# key = property name.
# value = description of the property
# NOTE(rloo). This is cached for the lifetime of the API service. If one or
# more conductor services are restarted with new driver versions, the API
# service should be restarted.
_RAID_PROPERTIES = {}
def hide_fields_in_newer_versions(driver):
"""This method hides fields that were added in newer API versions.
Certain fields were introduced at certain API versions.
These fields are only made available when the request's API version
matches or exceeds the versions when these fields were introduced.
"""
if not api_utils.allow_storage_interface():
driver.pop('default_storage_interface', None)
driver.pop('enabled_storage_interfaces', None)
if not api_utils.allow_rescue_interface():
driver.pop('default_rescue_interface', None)
driver.pop('enabled_rescue_interfaces', None)
if not api_utils.allow_bios_interface():
driver.pop('default_bios_interface', None)
driver.pop('enabled_bios_interfaces', None)
def convert_with_links(name, hosts, detail=False, interface_info=None):
"""Convert driver/hardware type info to a dict.
:param name: name of a hardware type.
:param hosts: list of conductor hostnames driver is active on.
:param detail: boolean, whether to include detailed info, such as
the 'type' field and default/enabled interfaces fields.
:param interface_info: optional list of dicts of hardware interface
info.
:returns: dict representing the driver object.
"""
driver = {
'name': name,
'hosts': hosts,
'links': [
link.make_link('self',
api.request.public_url,
'drivers', name),
link.make_link('bookmark',
api.request.public_url,
'drivers', name,
bookmark=True)
]
}
if api_utils.allow_links_node_states_and_driver_properties():
driver['properties'] = [
link.make_link('self',
api.request.public_url,
'drivers', name + "/properties"),
link.make_link('bookmark',
api.request.public_url,
'drivers', name + "/properties",
bookmark=True)
]
if api_utils.allow_dynamic_drivers():
# NOTE(dtantsur): only dynamic drivers (based on hardware types)
# are supported starting with the Rocky release.
driver['type'] = 'dynamic'
if detail:
if interface_info is None:
# TODO(jroll) objectify this
interface_info = (api.request.dbapi
.list_hardware_type_interfaces([name]))
for iface_type in driver_base.ALL_INTERFACES:
default = None
enabled = set()
for iface in interface_info:
if iface['interface_type'] == iface_type:
iface_name = iface['interface_name']
enabled.add(iface_name)
# NOTE(jroll) this assumes the default is the same
# on all conductors
if iface['default']:
default = iface_name
default_key = 'default_%s_interface' % iface_type
enabled_key = 'enabled_%s_interfaces' % iface_type
driver[default_key] = default
driver[enabled_key] = list(enabled)
hide_fields_in_newer_versions(driver)
return driver
def list_convert_with_links(hardware_types, detail=False):
"""Convert drivers and hardware types to an API-serializable object.
:param hardware_types: dict mapping hardware type names to conductor
hostnames.
:param detail: boolean, whether to include detailed info, such as
the 'type' field and default/enabled interfaces fields.
:returns: an API-serializable driver collection object.
"""
drivers = []
collection = {
'drivers': drivers
}
# NOTE(jroll) we return hardware types in all API versions,
# but restrict type/default/enabled fields to 1.30.
# This is checked in Driver.convert_with_links(), however also
# checking here can save us a DB query.
if api_utils.allow_dynamic_drivers() and detail:
iface_info = api.request.dbapi.list_hardware_type_interfaces(
list(hardware_types))
else:
iface_info = []
for htname in hardware_types:
interface_info = [i for i in iface_info
if i['hardware_type'] == htname]
drivers.append(
convert_with_links(htname,
list(hardware_types[htname]),
detail=detail,
interface_info=interface_info))
return collection
class DriverPassthruController(rest.RestController):
"""REST controller for driver passthru.
This controller allow vendors to expose cross-node functionality in the
Ironic API. Ironic will merely relay the message from here to the specified
driver, no introspection will be made in the message body.
"""
_custom_actions = {
'methods': ['GET']
}
@METRICS.timer('DriverPassthruController.methods')
@method.expose()
@args.validate(driver_name=args.string)
def methods(self, driver_name):
"""Retrieve information about vendor methods of the given driver.
:param driver_name: name of the driver.
:returns: dictionary with <vendor method name>:<method metadata>
entries.
:raises: DriverNotFound if the driver name is invalid or the
driver cannot be loaded.
"""
api_utils.check_policy('baremetal:driver:vendor_passthru')
if driver_name not in _VENDOR_METHODS:
topic = api.request.rpcapi.get_topic_for_driver(driver_name)
ret = api.request.rpcapi.get_driver_vendor_passthru_methods(
api.request.context, driver_name, topic=topic)
_VENDOR_METHODS[driver_name] = ret
return _VENDOR_METHODS[driver_name]
@METRICS.timer('DriverPassthruController._default')
@method.expose()
@method.body('data')
@args.validate(driver_name=args.string, method=args.string)
def _default(self, driver_name, method, data=None):
"""Call a driver API extension.
:param driver_name: name of the driver to call.
:param method: name of the method, to be passed to the vendor
implementation.
:param data: body of data to supply to the specified method.
"""
api_utils.check_policy('baremetal:driver:vendor_passthru')
topic = api.request.rpcapi.get_topic_for_driver(driver_name)
resp = api_utils.vendor_passthru(driver_name, method, topic,
data=data, driver_passthru=True)
api.response.status_code = resp.status_code
return resp.obj
class DriverRaidController(rest.RestController):
_custom_actions = {
'logical_disk_properties': ['GET']
}
@METRICS.timer('DriverRaidController.logical_disk_properties')
@method.expose()
@args.validate(driver_name=args.string)
def logical_disk_properties(self, driver_name):
"""Returns the logical disk properties for the driver.
:param driver_name: Name of the driver.
:returns: A dictionary containing the properties that can be mentioned
for logical disks and a textual description for them.
:raises: UnsupportedDriverExtension if the driver doesn't
support RAID configuration.
:raises: NotAcceptable, if requested version of the API is less than
1.12.
:raises: DriverNotFound, if driver is not loaded on any of the
conductors.
"""
api_utils.check_policy(
'baremetal:driver:get_raid_logical_disk_properties')
if not api_utils.allow_raid_config():
raise exception.NotAcceptable()
if driver_name not in _RAID_PROPERTIES:
topic = api.request.rpcapi.get_topic_for_driver(driver_name)
try:
info = api.request.rpcapi.get_raid_logical_disk_properties(
api.request.context, driver_name, topic=topic)
except exception.UnsupportedDriverExtension as e:
# Change error code as 404 seems appropriate because RAID is a
# standard interface and all drivers might not have it.
e.code = http_client.NOT_FOUND
raise
_RAID_PROPERTIES[driver_name] = info
return _RAID_PROPERTIES[driver_name]
class DriversController(rest.RestController):
"""REST controller for Drivers."""
vendor_passthru = DriverPassthruController()
raid = DriverRaidController()
"""Expose RAID as a sub-element of drivers"""
_custom_actions = {
'properties': ['GET'],
}
@METRICS.timer('DriversController.get_all')
@method.expose()
@args.validate(type=args.string, detail=args.boolean)
def get_all(self, type=None, detail=None):
"""Retrieve a list of drivers."""
# FIXME(tenbrae): formatting of the auto-generated REST API docs
# will break from a single-line doc string.
# This is a result of a bug in sphinxcontrib-pecanwsme
# https://github.com/dreamhost/sphinxcontrib-pecanwsme/issues/8
api_utils.check_policy('baremetal:driver:get')
api_utils.check_allow_driver_detail(detail)
api_utils.check_allow_filter_driver_type(type)
if type not in (None, 'classic', 'dynamic'):
raise exception.Invalid(_(
'"type" filter must be one of "classic" or "dynamic", '
'if specified.'))
if type is None or type == 'dynamic':
hw_type_dict = api.request.dbapi.get_active_hardware_type_dict()
else:
# NOTE(dtantsur): we don't support classic drivers starting with
# the Rocky release.
hw_type_dict = {}
return list_convert_with_links(hw_type_dict, detail=detail)
@METRICS.timer('DriversController.get_one')
@method.expose()
@args.validate(driver_name=args.string)
def get_one(self, driver_name):
"""Retrieve a single driver."""
# NOTE(russell_h): There is no way to make this more efficient than
# retrieving a list of drivers using the current sqlalchemy schema, but
# this path must be exposed for Pecan to route any paths we might
# choose to expose below it.
api_utils.check_policy('baremetal:driver:get')
hw_type_dict = api.request.dbapi.get_active_hardware_type_dict()
for name, hosts in hw_type_dict.items():
if name == driver_name:
return convert_with_links(name, list(hosts),
detail=True)
raise exception.DriverNotFound(driver_name=driver_name)
@METRICS.timer('DriversController.properties')
@method.expose()
@args.validate(driver_name=args.string)
def properties(self, driver_name):
"""Retrieve property information of the given driver.
:param driver_name: name of the driver.
:returns: dictionary with <property name>:<property description>
entries.
:raises: DriverNotFound (HTTP 404) if the driver name is invalid or
the driver cannot be loaded.
"""
api_utils.check_policy('baremetal:driver:get_properties')
if driver_name not in _DRIVER_PROPERTIES:
topic = api.request.rpcapi.get_topic_for_driver(driver_name)
properties = api.request.rpcapi.get_driver_properties(
api.request.context, driver_name, topic=topic)
_DRIVER_PROPERTIES[driver_name] = properties
return _DRIVER_PROPERTIES[driver_name]
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