# 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.
import pecan
from pecan import rest
from six.moves import http_client
import wsme
from wsme import types as wtypes
from ironic.api.controllers import base
from ironic.api.controllers import link
from ironic.api.controllers.v1 import types
from ironic.api.controllers.v1 import utils as api_utils
from ironic.api import expose
from ironic.common import exception
# 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 = {}
[docs]class Driver(base.APIBase):
"""API representation of a driver."""
name = wtypes.text
"""The name of the driver"""
hosts = [wtypes.text]
"""A list of active conductors that support this driver"""
links = wsme.wsattr([link.Link], readonly=True)
"""A list containing self and bookmark links"""
properties = wsme.wsattr([link.Link], readonly=True)
"""A list containing links to driver properties"""
@staticmethod
[docs] def convert_with_links(name, hosts):
driver = Driver()
driver.name = name
driver.hosts = hosts
driver.links = [
link.Link.make_link('self',
pecan.request.public_url,
'drivers', name),
link.Link.make_link('bookmark',
pecan.request.public_url,
'drivers', name,
bookmark=True)
]
if api_utils.allow_links_node_states_and_driver_properties():
driver.properties = [
link.Link.make_link('self',
pecan.request.public_url,
'drivers', name + "/properties"),
link.Link.make_link('bookmark',
pecan.request.public_url,
'drivers', name + "/properties",
bookmark=True)
]
return driver
@classmethod
[docs] def sample(cls):
sample = cls(name="sample-driver",
hosts=["fake-host"])
return sample
[docs]class DriverList(base.APIBase):
"""API representation of a list of drivers."""
drivers = [Driver]
"""A list containing drivers objects"""
@staticmethod
[docs] def convert_with_links(drivers):
collection = DriverList()
collection.drivers = [
Driver.convert_with_links(dname, list(drivers[dname]))
for dname in drivers]
return collection
@classmethod
[docs] def sample(cls):
sample = cls()
sample.drivers = [Driver.sample()]
return sample
[docs]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']
}
@expose.expose(wtypes.text, wtypes.text)
[docs] 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.
"""
if driver_name not in _VENDOR_METHODS:
topic = pecan.request.rpcapi.get_topic_for_driver(driver_name)
ret = pecan.request.rpcapi.get_driver_vendor_passthru_methods(
pecan.request.context, driver_name, topic=topic)
_VENDOR_METHODS[driver_name] = ret
return _VENDOR_METHODS[driver_name]
@expose.expose(wtypes.text, wtypes.text, wtypes.text,
body=wtypes.text)
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.
"""
topic = pecan.request.rpcapi.get_topic_for_driver(driver_name)
return api_utils.vendor_passthru(driver_name, method, topic, data=data,
driver_passthru=True)
[docs]class DriverRaidController(rest.RestController):
_custom_actions = {
'logical_disk_properties': ['GET']
}
@expose.expose(types.jsontype, wtypes.text)
[docs] 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.
"""
if not api_utils.allow_raid_config():
raise exception.NotAcceptable()
if driver_name not in _RAID_PROPERTIES:
topic = pecan.request.rpcapi.get_topic_for_driver(driver_name)
try:
info = pecan.request.rpcapi.get_raid_logical_disk_properties(
pecan.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]
[docs]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'],
}
@expose.expose(DriverList)
[docs] def get_all(self):
"""Retrieve a list of drivers."""
# FIXME(deva): 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
driver_list = pecan.request.dbapi.get_active_driver_dict()
return DriverList.convert_with_links(driver_list)
@expose.expose(Driver, wtypes.text)
[docs] 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.
driver_dict = pecan.request.dbapi.get_active_driver_dict()
for name, hosts in driver_dict.items():
if name == driver_name:
return Driver.convert_with_links(name, list(hosts))
raise exception.DriverNotFound(driver_name=driver_name)
@expose.expose(wtypes.text, wtypes.text)
[docs] 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.
"""
if driver_name not in _DRIVER_PROPERTIES:
topic = pecan.request.rpcapi.get_topic_for_driver(driver_name)
properties = pecan.request.rpcapi.get_driver_properties(
pecan.request.context, driver_name, topic=topic)
_DRIVER_PROPERTIES[driver_name] = properties
return _DRIVER_PROPERTIES[driver_name]