88 lines
2.8 KiB
Python
88 lines
2.8 KiB
Python
# Copyright 2017 AT&T Intellectual Property. All other rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import falcon
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import logging
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class AuthMiddleware(object):
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# Authentication
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def process_request(self, req, resp):
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ctx = req.context
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token = req.get_header('X-Auth-Token')
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user = self.validate_token(token)
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if user is not None:
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ctx.set_user(user)
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user_roles = self.role_list(user)
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ctx.add_roles(user_roles)
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else:
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ctx.add_role('anyone')
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# Authorization
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def process_resource(self, req, resp, resource, params):
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ctx = req.context
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if not resource.authorize_roles(ctx.roles):
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raise falcon.HTTPUnauthorized('Authentication required',
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('This resource requires an authorized role.'))
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# Return the username associated with an authenticated token or None
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def validate_token(self, token):
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if token == '10':
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return 'shipyard'
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elif token == 'admin':
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return 'admin'
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else:
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return None
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# Return the list of roles assigned to the username
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# Roles need to be an enum
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def role_list(self, username):
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if username == 'shipyard':
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return ['user']
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elif username == 'admin':
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return ['user', 'admin']
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class ContextMiddleware(object):
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def process_request(self, req, resp):
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ctx = req.context
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requested_logging = req.get_header('X-Log-Level')
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if requested_logging == 'DEBUG' and 'admin' in ctx.roles:
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ctx.set_log_level('debug')
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elif requested_logging == 'INFO':
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ctx.set_log_level('info')
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ext_marker = req.get_header('X-Context-Marker')
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ctx.set_external_marker(ext_marker if ext_marker is not None else '')
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class LoggingMiddleware(object):
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def __init__(self):
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self.logger = logging.getLogger('shipyard.control')
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def process_response(self, req, resp, resource, req_succeeded):
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ctx = req.context
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extra = {
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'user': ctx.user,
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'req_id': ctx.request_id,
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'external_ctx': ctx.external_marker,
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}
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resp.append_header('X-Shipyard-Req', ctx.request_id)
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self.logger.info("%s - %s" % (req.uri, resp.status), extra=extra) |