5da7062881
Simply removes the vim header line and the empty line following it (when present) for files in the api, db, and extenssions base directories. In one single _init_ file in this patchset, all comment lines are removed. Change-Id: I81b7168dc2ad74b8c30a87e50a531e157851499e Partial-Bug: 1229324
687 lines
26 KiB
Python
687 lines
26 KiB
Python
# Copyright 2011 OpenStack Foundation.
|
|
# Copyright 2011 Justin Santa Barbara
|
|
# 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 abc import ABCMeta
|
|
import imp
|
|
import itertools
|
|
import os
|
|
|
|
from oslo.config import cfg
|
|
import routes
|
|
import six
|
|
import webob.dec
|
|
import webob.exc
|
|
|
|
from neutron.api.v2 import attributes
|
|
from neutron.common import exceptions
|
|
import neutron.extensions
|
|
from neutron.manager import NeutronManager
|
|
from neutron.openstack.common import log as logging
|
|
from neutron import policy
|
|
from neutron import wsgi
|
|
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
@six.add_metaclass(ABCMeta)
|
|
class PluginInterface(object):
|
|
|
|
@classmethod
|
|
def __subclasshook__(cls, klass):
|
|
"""Checking plugin class.
|
|
|
|
The __subclasshook__ method is a class method
|
|
that will be called every time a class is tested
|
|
using issubclass(klass, PluginInterface).
|
|
In that case, it will check that every method
|
|
marked with the abstractmethod decorator is
|
|
provided by the plugin class.
|
|
"""
|
|
for method in cls.__abstractmethods__:
|
|
if any(method in base.__dict__ for base in klass.__mro__):
|
|
continue
|
|
return NotImplemented
|
|
return True
|
|
|
|
|
|
class ExtensionDescriptor(object):
|
|
"""Base class that defines the contract for extensions.
|
|
|
|
Note that you don't have to derive from this class to have a valid
|
|
extension; it is purely a convenience.
|
|
"""
|
|
|
|
def get_name(self):
|
|
"""The name of the extension.
|
|
|
|
e.g. 'Fox In Socks'
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
def get_alias(self):
|
|
"""The alias for the extension.
|
|
|
|
e.g. 'FOXNSOX'
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
def get_description(self):
|
|
"""Friendly description for the extension.
|
|
|
|
e.g. 'The Fox In Socks Extension'
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
def get_namespace(self):
|
|
"""The XML namespace for the extension.
|
|
|
|
e.g. 'http://www.fox.in.socks/api/ext/pie/v1.0'
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
def get_updated(self):
|
|
"""The timestamp when the extension was last updated.
|
|
|
|
e.g. '2011-01-22T13:25:27-06:00'
|
|
"""
|
|
# NOTE(justinsb): Not sure of the purpose of this is, vs the XML NS
|
|
raise NotImplementedError()
|
|
|
|
def get_resources(self):
|
|
"""List of extensions.ResourceExtension extension objects.
|
|
|
|
Resources define new nouns, and are accessible through URLs.
|
|
"""
|
|
resources = []
|
|
return resources
|
|
|
|
def get_actions(self):
|
|
"""List of extensions.ActionExtension extension objects.
|
|
|
|
Actions are verbs callable from the API.
|
|
"""
|
|
actions = []
|
|
return actions
|
|
|
|
def get_request_extensions(self):
|
|
"""List of extensions.RequestException extension objects.
|
|
|
|
Request extensions are used to handle custom request data.
|
|
"""
|
|
request_exts = []
|
|
return request_exts
|
|
|
|
def get_extended_resources(self, version):
|
|
"""Retrieve extended resources or attributes for core resources.
|
|
|
|
Extended attributes are implemented by a core plugin similarly
|
|
to the attributes defined in the core, and can appear in
|
|
request and response messages. Their names are scoped with the
|
|
extension's prefix. The core API version is passed to this
|
|
function, which must return a
|
|
map[<resource_name>][<attribute_name>][<attribute_property>]
|
|
specifying the extended resource attribute properties required
|
|
by that API version.
|
|
|
|
Extension can add resources and their attr definitions too.
|
|
The returned map can be integrated into RESOURCE_ATTRIBUTE_MAP.
|
|
"""
|
|
return {}
|
|
|
|
def get_plugin_interface(self):
|
|
"""Returns an abstract class which defines contract for the plugin.
|
|
|
|
The abstract class should inherit from extesnions.PluginInterface,
|
|
Methods in this abstract class should be decorated as abstractmethod
|
|
"""
|
|
return None
|
|
|
|
def update_attributes_map(self, extended_attributes,
|
|
extension_attrs_map=None):
|
|
"""Update attributes map for this extension.
|
|
|
|
This is default method for extending an extension's attributes map.
|
|
An extension can use this method and supplying its own resource
|
|
attribute map in extension_attrs_map argument to extend all its
|
|
attributes that needs to be extended.
|
|
|
|
If an extension does not implement update_attributes_map, the method
|
|
does nothing and just return.
|
|
"""
|
|
if not extension_attrs_map:
|
|
return
|
|
|
|
for resource, attrs in extension_attrs_map.iteritems():
|
|
extended_attrs = extended_attributes.get(resource)
|
|
if extended_attrs:
|
|
attrs.update(extended_attrs)
|
|
|
|
def get_alias_namespace_compatibility_map(self):
|
|
"""Returns mappings between extension aliases and XML namespaces.
|
|
|
|
The mappings are XML namespaces that should, for backward compatibility
|
|
reasons, be added to the XML serialization of extended attributes.
|
|
This allows an established extended attribute to be provided by
|
|
another extension than the original one while keeping its old alias
|
|
in the name.
|
|
:return: A dictionary of extension_aliases and namespace strings.
|
|
"""
|
|
return {}
|
|
|
|
|
|
class ActionExtensionController(wsgi.Controller):
|
|
|
|
def __init__(self, application):
|
|
self.application = application
|
|
self.action_handlers = {}
|
|
|
|
def add_action(self, action_name, handler):
|
|
self.action_handlers[action_name] = handler
|
|
|
|
def action(self, request, id):
|
|
input_dict = self._deserialize(request.body,
|
|
request.get_content_type())
|
|
for action_name, handler in self.action_handlers.iteritems():
|
|
if action_name in input_dict:
|
|
return handler(input_dict, request, id)
|
|
# no action handler found (bump to downstream application)
|
|
response = self.application
|
|
return response
|
|
|
|
|
|
class RequestExtensionController(wsgi.Controller):
|
|
|
|
def __init__(self, application):
|
|
self.application = application
|
|
self.handlers = []
|
|
|
|
def add_handler(self, handler):
|
|
self.handlers.append(handler)
|
|
|
|
def process(self, request, *args, **kwargs):
|
|
res = request.get_response(self.application)
|
|
# currently request handlers are un-ordered
|
|
for handler in self.handlers:
|
|
response = handler(request, res)
|
|
return response
|
|
|
|
|
|
class ExtensionController(wsgi.Controller):
|
|
|
|
def __init__(self, extension_manager):
|
|
self.extension_manager = extension_manager
|
|
|
|
def _translate(self, ext):
|
|
ext_data = {}
|
|
ext_data['name'] = ext.get_name()
|
|
ext_data['alias'] = ext.get_alias()
|
|
ext_data['description'] = ext.get_description()
|
|
ext_data['namespace'] = ext.get_namespace()
|
|
ext_data['updated'] = ext.get_updated()
|
|
ext_data['links'] = [] # TODO(dprince): implement extension links
|
|
return ext_data
|
|
|
|
def index(self, request):
|
|
extensions = []
|
|
for _alias, ext in self.extension_manager.extensions.iteritems():
|
|
extensions.append(self._translate(ext))
|
|
return dict(extensions=extensions)
|
|
|
|
def show(self, request, id):
|
|
# NOTE(dprince): the extensions alias is used as the 'id' for show
|
|
ext = self.extension_manager.extensions.get(id, None)
|
|
if not ext:
|
|
raise webob.exc.HTTPNotFound(
|
|
_("Extension with alias %s does not exist") % id)
|
|
return dict(extension=self._translate(ext))
|
|
|
|
def delete(self, request, id):
|
|
msg = _('Resource not found.')
|
|
raise webob.exc.HTTPNotFound(msg)
|
|
|
|
def create(self, request):
|
|
msg = _('Resource not found.')
|
|
raise webob.exc.HTTPNotFound(msg)
|
|
|
|
|
|
class ExtensionMiddleware(wsgi.Middleware):
|
|
"""Extensions middleware for WSGI."""
|
|
|
|
def __init__(self, application,
|
|
ext_mgr=None):
|
|
self.ext_mgr = (ext_mgr
|
|
or ExtensionManager(get_extensions_path()))
|
|
mapper = routes.Mapper()
|
|
|
|
# extended resources
|
|
for resource in self.ext_mgr.get_resources():
|
|
path_prefix = resource.path_prefix
|
|
if resource.parent:
|
|
path_prefix = (resource.path_prefix +
|
|
"/%s/{%s_id}" %
|
|
(resource.parent["collection_name"],
|
|
resource.parent["member_name"]))
|
|
|
|
LOG.debug(_('Extended resource: %s'),
|
|
resource.collection)
|
|
for action, method in resource.collection_actions.iteritems():
|
|
conditions = dict(method=[method])
|
|
path = "/%s/%s" % (resource.collection, action)
|
|
with mapper.submapper(controller=resource.controller,
|
|
action=action,
|
|
path_prefix=path_prefix,
|
|
conditions=conditions) as submap:
|
|
submap.connect(path)
|
|
submap.connect("%s.:(format)" % path)
|
|
|
|
mapper.resource(resource.collection, resource.collection,
|
|
controller=resource.controller,
|
|
member=resource.member_actions,
|
|
parent_resource=resource.parent,
|
|
path_prefix=path_prefix)
|
|
|
|
# extended actions
|
|
action_controllers = self._action_ext_controllers(application,
|
|
self.ext_mgr, mapper)
|
|
for action in self.ext_mgr.get_actions():
|
|
LOG.debug(_('Extended action: %s'), action.action_name)
|
|
controller = action_controllers[action.collection]
|
|
controller.add_action(action.action_name, action.handler)
|
|
|
|
# extended requests
|
|
req_controllers = self._request_ext_controllers(application,
|
|
self.ext_mgr, mapper)
|
|
for request_ext in self.ext_mgr.get_request_extensions():
|
|
LOG.debug(_('Extended request: %s'), request_ext.key)
|
|
controller = req_controllers[request_ext.key]
|
|
controller.add_handler(request_ext.handler)
|
|
|
|
self._router = routes.middleware.RoutesMiddleware(self._dispatch,
|
|
mapper)
|
|
super(ExtensionMiddleware, self).__init__(application)
|
|
|
|
@classmethod
|
|
def factory(cls, global_config, **local_config):
|
|
"""Paste factory."""
|
|
def _factory(app):
|
|
return cls(app, global_config, **local_config)
|
|
return _factory
|
|
|
|
def _action_ext_controllers(self, application, ext_mgr, mapper):
|
|
"""Return a dict of ActionExtensionController-s by collection."""
|
|
action_controllers = {}
|
|
for action in ext_mgr.get_actions():
|
|
if action.collection not in action_controllers.keys():
|
|
controller = ActionExtensionController(application)
|
|
mapper.connect("/%s/:(id)/action.:(format)" %
|
|
action.collection,
|
|
action='action',
|
|
controller=controller,
|
|
conditions=dict(method=['POST']))
|
|
mapper.connect("/%s/:(id)/action" % action.collection,
|
|
action='action',
|
|
controller=controller,
|
|
conditions=dict(method=['POST']))
|
|
action_controllers[action.collection] = controller
|
|
|
|
return action_controllers
|
|
|
|
def _request_ext_controllers(self, application, ext_mgr, mapper):
|
|
"""Returns a dict of RequestExtensionController-s by collection."""
|
|
request_ext_controllers = {}
|
|
for req_ext in ext_mgr.get_request_extensions():
|
|
if req_ext.key not in request_ext_controllers.keys():
|
|
controller = RequestExtensionController(application)
|
|
mapper.connect(req_ext.url_route + '.:(format)',
|
|
action='process',
|
|
controller=controller,
|
|
conditions=req_ext.conditions)
|
|
|
|
mapper.connect(req_ext.url_route,
|
|
action='process',
|
|
controller=controller,
|
|
conditions=req_ext.conditions)
|
|
request_ext_controllers[req_ext.key] = controller
|
|
|
|
return request_ext_controllers
|
|
|
|
@webob.dec.wsgify(RequestClass=wsgi.Request)
|
|
def __call__(self, req):
|
|
"""Route the incoming request with router."""
|
|
req.environ['extended.app'] = self.application
|
|
return self._router
|
|
|
|
@staticmethod
|
|
@webob.dec.wsgify(RequestClass=wsgi.Request)
|
|
def _dispatch(req):
|
|
"""Dispatch the request.
|
|
|
|
Returns the routed WSGI app's response or defers to the extended
|
|
application.
|
|
"""
|
|
match = req.environ['wsgiorg.routing_args'][1]
|
|
if not match:
|
|
return req.environ['extended.app']
|
|
app = match['controller']
|
|
return app
|
|
|
|
|
|
def plugin_aware_extension_middleware_factory(global_config, **local_config):
|
|
"""Paste factory."""
|
|
def _factory(app):
|
|
ext_mgr = PluginAwareExtensionManager.get_instance()
|
|
return ExtensionMiddleware(app, ext_mgr=ext_mgr)
|
|
return _factory
|
|
|
|
|
|
class ExtensionManager(object):
|
|
"""Load extensions from the configured extension path.
|
|
|
|
See tests/unit/extensions/foxinsocks.py for an
|
|
example extension implementation.
|
|
"""
|
|
|
|
def __init__(self, path):
|
|
LOG.info(_('Initializing extension manager.'))
|
|
self.path = path
|
|
self.extensions = {}
|
|
self._load_all_extensions()
|
|
policy.reset()
|
|
|
|
def get_resources(self):
|
|
"""Returns a list of ResourceExtension objects."""
|
|
resources = []
|
|
resources.append(ResourceExtension('extensions',
|
|
ExtensionController(self)))
|
|
for ext in self.extensions.itervalues():
|
|
try:
|
|
resources.extend(ext.get_resources())
|
|
except AttributeError:
|
|
# NOTE(dprince): Extension aren't required to have resource
|
|
# extensions
|
|
pass
|
|
return resources
|
|
|
|
def get_actions(self):
|
|
"""Returns a list of ActionExtension objects."""
|
|
actions = []
|
|
for ext in self.extensions.itervalues():
|
|
try:
|
|
actions.extend(ext.get_actions())
|
|
except AttributeError:
|
|
# NOTE(dprince): Extension aren't required to have action
|
|
# extensions
|
|
pass
|
|
return actions
|
|
|
|
def get_request_extensions(self):
|
|
"""Returns a list of RequestExtension objects."""
|
|
request_exts = []
|
|
for ext in self.extensions.itervalues():
|
|
try:
|
|
request_exts.extend(ext.get_request_extensions())
|
|
except AttributeError:
|
|
# NOTE(dprince): Extension aren't required to have request
|
|
# extensions
|
|
pass
|
|
return request_exts
|
|
|
|
def extend_resources(self, version, attr_map):
|
|
"""Extend resources with additional resources or attributes.
|
|
|
|
:param: attr_map, the existing mapping from resource name to
|
|
attrs definition.
|
|
|
|
After this function, we will extend the attr_map if an extension
|
|
wants to extend this map.
|
|
"""
|
|
update_exts = []
|
|
processed_exts = set()
|
|
exts_to_process = self.extensions.copy()
|
|
# Iterate until there are unprocessed extensions or if no progress
|
|
# is made in a whole iteration
|
|
while exts_to_process:
|
|
processed_ext_count = len(processed_exts)
|
|
for ext_name, ext in exts_to_process.items():
|
|
if not hasattr(ext, 'get_extended_resources'):
|
|
del exts_to_process[ext_name]
|
|
continue
|
|
if hasattr(ext, 'update_attributes_map'):
|
|
update_exts.append(ext)
|
|
if hasattr(ext, 'get_required_extensions'):
|
|
# Process extension only if all required extensions
|
|
# have been processed already
|
|
required_exts_set = set(ext.get_required_extensions())
|
|
if required_exts_set - processed_exts:
|
|
continue
|
|
try:
|
|
extended_attrs = ext.get_extended_resources(version)
|
|
for resource, resource_attrs in extended_attrs.iteritems():
|
|
if attr_map.get(resource, None):
|
|
attr_map[resource].update(resource_attrs)
|
|
else:
|
|
attr_map[resource] = resource_attrs
|
|
if extended_attrs:
|
|
attributes.EXT_NSES[ext.get_alias()] = (
|
|
ext.get_namespace())
|
|
except AttributeError:
|
|
LOG.exception(_("Error fetching extended attributes for "
|
|
"extension '%s'"), ext.get_name())
|
|
try:
|
|
comp_map = ext.get_alias_namespace_compatibility_map()
|
|
attributes.EXT_NSES_BC.update(comp_map)
|
|
except AttributeError:
|
|
LOG.info(_("Extension '%s' provides no backward "
|
|
"compatibility map for extended attributes"),
|
|
ext.get_name())
|
|
processed_exts.add(ext_name)
|
|
del exts_to_process[ext_name]
|
|
if len(processed_exts) == processed_ext_count:
|
|
# Exit loop as no progress was made
|
|
break
|
|
if exts_to_process:
|
|
# NOTE(salv-orlando): Consider whether this error should be fatal
|
|
LOG.error(_("It was impossible to process the following "
|
|
"extensions: %s because of missing requirements."),
|
|
','.join(exts_to_process.keys()))
|
|
|
|
# Extending extensions' attributes map.
|
|
for ext in update_exts:
|
|
ext.update_attributes_map(attr_map)
|
|
|
|
def _check_extension(self, extension):
|
|
"""Checks for required methods in extension objects."""
|
|
try:
|
|
LOG.debug(_('Ext name: %s'), extension.get_name())
|
|
LOG.debug(_('Ext alias: %s'), extension.get_alias())
|
|
LOG.debug(_('Ext description: %s'), extension.get_description())
|
|
LOG.debug(_('Ext namespace: %s'), extension.get_namespace())
|
|
LOG.debug(_('Ext updated: %s'), extension.get_updated())
|
|
except AttributeError as ex:
|
|
LOG.exception(_("Exception loading extension: %s"), unicode(ex))
|
|
return False
|
|
if hasattr(extension, 'check_env'):
|
|
try:
|
|
extension.check_env()
|
|
except exceptions.InvalidExtensionEnv as ex:
|
|
LOG.warn(_("Exception loading extension: %s"), unicode(ex))
|
|
return False
|
|
return True
|
|
|
|
def _load_all_extensions(self):
|
|
"""Load extensions from the configured path.
|
|
|
|
The extension name is constructed from the module_name. If your
|
|
extension module is named widgets.py, the extension class within that
|
|
module should be 'Widgets'.
|
|
|
|
See tests/unit/extensions/foxinsocks.py for an example extension
|
|
implementation.
|
|
"""
|
|
for path in self.path.split(':'):
|
|
if os.path.exists(path):
|
|
self._load_all_extensions_from_path(path)
|
|
else:
|
|
LOG.error(_("Extension path '%s' doesn't exist!"), path)
|
|
|
|
def _load_all_extensions_from_path(self, path):
|
|
# Sorting the extension list makes the order in which they
|
|
# are loaded predictable across a cluster of load-balanced
|
|
# Neutron Servers
|
|
for f in sorted(os.listdir(path)):
|
|
try:
|
|
LOG.info(_('Loading extension file: %s'), f)
|
|
mod_name, file_ext = os.path.splitext(os.path.split(f)[-1])
|
|
ext_path = os.path.join(path, f)
|
|
if file_ext.lower() == '.py' and not mod_name.startswith('_'):
|
|
mod = imp.load_source(mod_name, ext_path)
|
|
ext_name = mod_name[0].upper() + mod_name[1:]
|
|
new_ext_class = getattr(mod, ext_name, None)
|
|
if not new_ext_class:
|
|
LOG.warn(_('Did not find expected name '
|
|
'"%(ext_name)s" in %(file)s'),
|
|
{'ext_name': ext_name,
|
|
'file': ext_path})
|
|
continue
|
|
new_ext = new_ext_class()
|
|
self.add_extension(new_ext)
|
|
except Exception as exception:
|
|
LOG.warn(_("Extension file %(f)s wasn't loaded due to "
|
|
"%(exception)s"), {'f': f, 'exception': exception})
|
|
|
|
def add_extension(self, ext):
|
|
# Do nothing if the extension doesn't check out
|
|
if not self._check_extension(ext):
|
|
return
|
|
|
|
alias = ext.get_alias()
|
|
LOG.info(_('Loaded extension: %s'), alias)
|
|
|
|
if alias in self.extensions:
|
|
raise exceptions.DuplicatedExtension(alias=alias)
|
|
self.extensions[alias] = ext
|
|
|
|
|
|
class PluginAwareExtensionManager(ExtensionManager):
|
|
|
|
_instance = None
|
|
|
|
def __init__(self, path, plugins):
|
|
self.plugins = plugins
|
|
super(PluginAwareExtensionManager, self).__init__(path)
|
|
self.check_if_plugin_extensions_loaded()
|
|
|
|
def _check_extension(self, extension):
|
|
"""Check if an extension is supported by any plugin."""
|
|
extension_is_valid = super(PluginAwareExtensionManager,
|
|
self)._check_extension(extension)
|
|
return (extension_is_valid and
|
|
self._plugins_support(extension) and
|
|
self._plugins_implement_interface(extension))
|
|
|
|
def _plugins_support(self, extension):
|
|
alias = extension.get_alias()
|
|
supports_extension = any((hasattr(plugin,
|
|
"supported_extension_aliases") and
|
|
alias in plugin.supported_extension_aliases)
|
|
for plugin in self.plugins.values())
|
|
if not supports_extension:
|
|
LOG.warn(_("Extension %s not supported by any of loaded plugins"),
|
|
alias)
|
|
return supports_extension
|
|
|
|
def _plugins_implement_interface(self, extension):
|
|
if(not hasattr(extension, "get_plugin_interface") or
|
|
extension.get_plugin_interface() is None):
|
|
return True
|
|
for plugin in self.plugins.values():
|
|
if isinstance(plugin, extension.get_plugin_interface()):
|
|
return True
|
|
LOG.warn(_("Loaded plugins do not implement extension %s interface"),
|
|
extension.get_alias())
|
|
return False
|
|
|
|
@classmethod
|
|
def get_instance(cls):
|
|
if cls._instance is None:
|
|
cls._instance = cls(get_extensions_path(),
|
|
NeutronManager.get_service_plugins())
|
|
return cls._instance
|
|
|
|
def check_if_plugin_extensions_loaded(self):
|
|
"""Check if an extension supported by a plugin has been loaded."""
|
|
plugin_extensions = set(itertools.chain.from_iterable([
|
|
getattr(plugin, "supported_extension_aliases", [])
|
|
for plugin in self.plugins.values()]))
|
|
missing_aliases = plugin_extensions - set(self.extensions)
|
|
if missing_aliases:
|
|
raise exceptions.ExtensionsNotFound(
|
|
extensions=list(missing_aliases))
|
|
|
|
|
|
class RequestExtension(object):
|
|
"""Extend requests and responses of core Neutron OpenStack API controllers.
|
|
|
|
Provide a way to add data to responses and handle custom request data
|
|
that is sent to core Neutron OpenStack API controllers.
|
|
"""
|
|
|
|
def __init__(self, method, url_route, handler):
|
|
self.url_route = url_route
|
|
self.handler = handler
|
|
self.conditions = dict(method=[method])
|
|
self.key = "%s-%s" % (method, url_route)
|
|
|
|
|
|
class ActionExtension(object):
|
|
"""Add custom actions to core Neutron OpenStack API controllers."""
|
|
|
|
def __init__(self, collection, action_name, handler):
|
|
self.collection = collection
|
|
self.action_name = action_name
|
|
self.handler = handler
|
|
|
|
|
|
class ResourceExtension(object):
|
|
"""Add top level resources to the OpenStack API in Neutron."""
|
|
|
|
def __init__(self, collection, controller, parent=None, path_prefix="",
|
|
collection_actions={}, member_actions={}, attr_map={}):
|
|
self.collection = collection
|
|
self.controller = controller
|
|
self.parent = parent
|
|
self.collection_actions = collection_actions
|
|
self.member_actions = member_actions
|
|
self.path_prefix = path_prefix
|
|
self.attr_map = attr_map
|
|
|
|
|
|
# Returns the extension paths from a config entry and the __path__
|
|
# of neutron.extensions
|
|
def get_extensions_path():
|
|
paths = ':'.join(neutron.extensions.__path__)
|
|
if cfg.CONF.api_extensions_path:
|
|
paths = ':'.join([cfg.CONF.api_extensions_path, paths])
|
|
|
|
return paths
|
|
|
|
|
|
def append_api_extensions_path(paths):
|
|
paths = [cfg.CONF.api_extensions_path] + paths
|
|
cfg.CONF.set_override('api_extensions_path',
|
|
':'.join([p for p in paths if p]))
|