Paul Bourke a5f99317ac Add bare bones ekko-api
Foundation for ekko-api, ported over from the Ironic project.

The goal here was to copy enough to give a solid foundation that
conforms to the "OpenStack way", without a lot of extra frills that we
either may not need right away, or makes it harder see what's going on
starting out.

After installation the service can be started via 'ekko-api', which
listens on port 6800 by default. This was chosen from the list of
unassigned ports at
http://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.txt

There are still plenty of TODO's, primarily keystone integration and
config file generation. Foundations for these are here but completely
untested as of this commit.

Change-Id: If136a3bb66949ef710d741eaf3691f36f7b60692
2016-02-08 01:07:34 +00:00

112 lines
3.3 KiB
Python

#
# 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
from ekko.api.controllers import base
from ekko.api.controllers import v1
from ekko.api.controllers.v1 import versions
from ekko.api import expose
ID_VERSION1 = 'v1'
class Version(base.APIBase):
"""An API version representation.
This class represents an API version, including the minimum and
maximum minor versions that are supported within the major version.
"""
id = wtypes.text
"""The ID of the (major) version, also acts as the release number"""
status = wtypes.text
"""Status of the version.
One of:
* CURRENT - the latest version of API,
* SUPPORTED - supported, but not latest, version of API,
* DEPRECATED - supported, but deprecated, version of API.
"""
version = wtypes.text
"""The current, maximum supported (major.minor) version of API."""
min_version = wtypes.text
"""Minimum supported (major.minor) version of API."""
def __init__(self, id, min_version, version, status='CURRENT'):
self.id = id
self.status = status
self.version = version
self.min_version = min_version
class Root(base.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():
root = Root()
root.name = "OpenStack Ekko API"
root.description = ("Block-based backups stored in object-storage.")
root.default_version = Version(ID_VERSION1,
versions.MIN_VERSION_STRING,
versions.MAX_VERSION_STRING)
root.versions = [root.default_version]
return root
class RootController(rest.RestController):
_versions = [ID_VERSION1]
"""All supported API versions"""
_default_version = ID_VERSION1
"""The default API version"""
v1 = v1.Controller()
@expose.expose(Root)
def get(self):
# NOTE: The reason why convert() it's 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()
@pecan.expose()
def _route(self, args):
"""Overrides the default routing behavior.
It redirects the request to the default version of the ekko 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)