123 lines
4.2 KiB
Python
123 lines
4.2 KiB
Python
# Copyright 2012 New Dream Network, LLC (DreamHost)
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from pecan import hooks
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from magnum.common import context
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from magnum.conductor import api as conductor_api
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import magnum.conf.keystone
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CONF = magnum.conf.CONF
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class ContextHook(hooks.PecanHook):
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"""Configures a request context and attaches it to the request.
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The following HTTP request headers are used:
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X-User-Name:
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Used for context.user_name.
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X-User-Id:
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Used for context.user_id.
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X-Project-Name:
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Used for context.project.
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X-Project-Id:
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Used for context.project_id.
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X-Auth-Token:
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Used for context.auth_token.
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X-Roles:
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Used for context.roles.
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"""
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def before(self, state):
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headers = state.request.headers
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user_name = headers.get('X-User-Name')
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user_id = headers.get('X-User-Id')
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project = headers.get('X-Project-Name')
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project_id = headers.get('X-Project-Id')
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domain_id = headers.get('X-User-Domain-Id')
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domain_name = headers.get('X-User-Domain-Name')
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auth_token = headers.get('X-Auth-Token')
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roles = headers.get('X-Roles', '').split(',')
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auth_token_info = state.request.environ.get('keystone.token_info')
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conf = CONF[magnum.conf.keystone.CFG_LEGACY_GROUP]
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auth_url = (getattr(conf, 'www_authenticate_uri', None) or
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getattr(conf, 'auth_uri', None))
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if auth_url:
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auth_url = auth_url.replace('v2.0', 'v3')
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state.request.context = context.make_context(
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auth_token=auth_token,
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auth_url=auth_url,
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auth_token_info=auth_token_info,
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user_name=user_name,
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user_id=user_id,
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project_name=project,
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project_id=project_id,
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domain_id=domain_id,
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domain_name=domain_name,
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roles=roles)
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class RPCHook(hooks.PecanHook):
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"""Attach the rpcapi object to the request so controllers can get to it."""
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def before(self, state):
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state.request.rpcapi = conductor_api.API(context=state.request.context)
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class NoExceptionTracebackHook(hooks.PecanHook):
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"""Workaround rpc.common: deserialize_remote_exception.
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deserialize_remote_exception builds rpc exception traceback into error
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message which is then sent to the client. Such behavior is a security
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concern so this hook is aimed to cut-off traceback from the error message.
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"""
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# NOTE(max_lobur): 'after' hook used instead of 'on_error' because
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# 'on_error' never fired for wsme+pecan pair. wsme @wsexpose decorator
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# catches and handles all the errors, so 'on_error' dedicated for unhandled
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# exceptions never fired.
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def after(self, state):
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# Omit empty body. Some errors may not have body at this level yet.
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if not state.response.body:
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return
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# Do nothing if there is no error.
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if 200 <= state.response.status_int < 400:
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return
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json_body = state.response.json
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# Do not remove traceback when server in debug mode (except 'Server'
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# errors when 'debuginfo' will be used for traces).
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if CONF.debug and json_body.get('faultcode') != 'Server':
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return
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faultsting = json_body.get('faultstring')
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traceback_marker = 'Traceback (most recent call last):'
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if faultsting and (traceback_marker in faultsting):
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# Cut-off traceback.
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faultsting = faultsting.split(traceback_marker, 1)[0]
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# Remove trailing newlines and spaces if any.
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json_body['faultstring'] = faultsting.rstrip()
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# Replace the whole json. Cannot change original one because it's
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# generated on the fly.
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state.response.json = json_body
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