deckhand/deckhand/control/base.py

73 lines
2.2 KiB
Python

# Copyright 2017 AT&T Intellectual Property. All other 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 yaml
import falcon
from deckhand import context
class BaseResource(object):
"""Base resource class for implementing API resources."""
def on_options(self, req, resp):
self_attrs = dir(self)
methods = ['GET', 'HEAD', 'POST', 'PUT', 'DELETE', 'PATCH']
allowed_methods = []
for m in methods:
if 'on_' + m.lower() in self_attrs:
allowed_methods.append(m)
resp.headers['Allow'] = ','.join(allowed_methods)
resp.status = falcon.HTTP_200
def to_yaml_body(self, dict_body):
"""Converts JSON body into YAML response body.
:param dict_body: response body to be converted to YAML.
:returns: YAML encoding of `dict_body`.
"""
if isinstance(dict_body, dict):
return yaml.safe_dump(dict_body)
elif isinstance(dict_body, list):
return yaml.safe_dump_all(dict_body)
raise TypeError('Unrecognized dict_body type when converting response '
'body to YAML format.')
class DeckhandRequest(falcon.Request):
def __init__(self, env, options=None, policy_enforcer=None):
super(DeckhandRequest, self).__init__(env, options)
self.context = context.RequestContext.from_environ(
self.env, policy_enforcer=policy_enforcer)
@property
def project_id(self):
return self.context.tenant
@property
def user_id(self):
return self.context.user
@property
def roles(self):
return self.context.roles
def __repr__(self):
return '%s, context=%s' % (self.path, self.context)