gluon/gluon/api/root.py

106 lines
3.3 KiB
Python

# -*- encoding: utf-8 -*-
#
# Copyright � 2012 New Dream Network, LLC (DreamHost)
#
# 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 wsme import types as wtypes
import wsmeext.pecan as wsme_pecan
from gluon.api.baseObject import APIBase
from gluon.api import link
from gluon.api.proton_controller import ProtonController
from gluon.api import types
class Version(APIBase):
"""An API version representation."""
status = types.create_enum_type('CURRENT', 'STABLE', 'DEPRECATED')
"""Status of the API, which can be CURRENT, STABLE, DEPRECATED"""
id = wtypes.text
"""The ID of the version, also acts as the release number"""
links = [link.Link]
"""A Link that point to a specific version of the API"""
@staticmethod
def convert(id, status='CURRENT'):
version = Version()
version.status = status
version.id = id
version.links = [link.Link.make_link('self', pecan.request.host_url,
id, '', bookmark=True)]
return version
class Root(APIBase):
name = wtypes.text
"""The name of the API"""
description = wtypes.text
"""Some information about this API"""
versions = [Version]
"""Links to all the versions available in this API"""
default_version = Version
"""A link to the default version of the API"""
@staticmethod
def convert(version='v1'):
root = Root()
root.name = "Gluon API"
root.description = ("OpenStack Gluon is a port arbiter that maintains "
"a list of ports and bindings of different "
"network backends. A Proton Server is the API "
"server that hosts multiple Protons, i.e. "
"multiple sets of APIs.")
root.versions = [Version.convert(version)]
root.default_version = Version.convert(version)
return root
class RootController(rest.RestController):
_versions = ['proton']
"""All supported API versions"""
_default_version = 'proton'
"""The default API version"""
proton = ProtonController()
@wsme_pecan.wsexpose(Root)
def get(self):
# NOTE: The reason why convert() is being called for every
# request is because we need to get the host url from
# the request object to make the links.
return Root.convert(version=self._default_version)
@pecan.expose()
def _route(self, args, request=None):
"""Overrides the default routing behavior.
It redirects the request to the default version of the Gluon API
if the version number is not specified in the url.
"""
if args[0] and args[0] not in self._versions:
args = [self._default_version] + args
return super(RootController, self)._route(args)