176 lines
6.0 KiB
Python
176 lines
6.0 KiB
Python
# Copyright 2013 Red Hat, Inc.
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# All Rights Reserved.
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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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import pecan
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from pecan import rest
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import wsme
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from wsme import types as wtypes
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import wsmeext.pecan as wsme_pecan
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from ironic.api.controllers import base
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from ironic.api.controllers import link
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from ironic.common import exception
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from ironic.common.i18n import _
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# Property information for drivers:
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# key = driver name;
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# value = dictionary of properties of that driver:
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# key = property name.
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# value = description of the property.
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# NOTE(rloo). This is cached for the lifetime of the API service. If one or
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# more conductor services are restarted with new driver versions, the API
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# service should be restarted.
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_DRIVER_PROPERTIES = {}
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class Driver(base.APIBase):
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"""API representation of a driver."""
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name = wtypes.text
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"The name of the driver"
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hosts = [wtypes.text]
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"A list of active conductors that support this driver"
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links = wsme.wsattr([link.Link], readonly=True)
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"A list containing self and bookmark links"
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@classmethod
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def convert_with_links(cls, name, hosts):
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driver = Driver()
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driver.name = name
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driver.hosts = hosts
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driver.links = [
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link.Link.make_link('self',
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pecan.request.host_url,
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'drivers', name),
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link.Link.make_link('bookmark',
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pecan.request.host_url,
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'drivers', name,
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bookmark=True)
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]
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return driver
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@classmethod
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def sample(cls):
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sample = cls(name="sample-driver",
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hosts=["fake-host"])
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return sample
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class DriverList(base.APIBase):
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"""API representation of a list of drivers."""
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drivers = [Driver]
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"A list containing drivers objects"
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@classmethod
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def convert_with_links(cls, drivers):
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collection = DriverList()
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collection.drivers = [
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Driver.convert_with_links(dname, list(drivers[dname]))
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for dname in drivers]
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return collection
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@classmethod
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def sample(cls):
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sample = cls()
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sample.drivers = [Driver.sample()]
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return sample
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class DriverPassthruController(rest.RestController):
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"""REST controller for driver passthru.
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This controller allow vendors to expose cross-node functionality in the
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Ironic API. Ironic will merely relay the message from here to the specified
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driver, no introspection will be made in the message body.
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"""
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@wsme_pecan.wsexpose(wtypes.text, wtypes.text, wtypes.text,
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body=wtypes.text,
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status_code=200)
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def post(self, driver_name, method, data):
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"""Call a driver API extension.
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:param driver_name: name of the driver to call.
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:param method: name of the method, to be passed to the vendor
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implementation.
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:param data: body of data to supply to the specified method.
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"""
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if not method:
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raise wsme.exc.ClientSideError(_("Method not specified"))
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topic = pecan.request.rpcapi.get_topic_for_driver(driver_name)
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return pecan.request.rpcapi.driver_vendor_passthru(
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pecan.request.context, driver_name, method, data, topic=topic)
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class DriversController(rest.RestController):
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"""REST controller for Drivers."""
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vendor_passthru = DriverPassthruController()
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_custom_actions = {
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'properties': ['GET'],
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}
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@wsme_pecan.wsexpose(DriverList)
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def get_all(self):
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"""Retrieve a list of drivers.
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"""
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# FIXME(deva): formatting of the auto-generated REST API docs
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# will break from a single-line doc string.
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# This is a result of a bug in sphinxcontrib-pecanwsme
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# https://github.com/dreamhost/sphinxcontrib-pecanwsme/issues/8
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driver_list = pecan.request.dbapi.get_active_driver_dict()
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return DriverList.convert_with_links(driver_list)
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@wsme_pecan.wsexpose(Driver, wtypes.text)
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def get_one(self, driver_name):
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"""Retrieve a single driver.
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"""
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# NOTE(russell_h): There is no way to make this more efficient than
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# retrieving a list of drivers using the current sqlalchemy schema, but
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# this path must be exposed for Pecan to route any paths we might
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# choose to expose below it.
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driver_dict = pecan.request.dbapi.get_active_driver_dict()
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for name, hosts in driver_dict.iteritems():
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if name == driver_name:
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return Driver.convert_with_links(name, list(hosts))
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raise exception.DriverNotFound(driver_name=driver_name)
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@wsme_pecan.wsexpose(wtypes.text, wtypes.text)
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def properties(self, driver_name):
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"""Retrieve property information of the given driver.
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:param driver_name: name of the driver.
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:returns: dictionary with <property name>:<property description>
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entries.
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:raises: DriverNotFound (HTTP 404) if the driver name is invalid or
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the driver cannot be loaded.
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"""
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if driver_name not in _DRIVER_PROPERTIES:
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topic = pecan.request.rpcapi.get_topic_for_driver(driver_name)
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properties = pecan.request.rpcapi.get_driver_properties(
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pecan.request.context, driver_name, topic=topic)
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_DRIVER_PROPERTIES[driver_name] = properties
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return _DRIVER_PROPERTIES[driver_name]
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