68 lines
2.3 KiB
Python
68 lines
2.3 KiB
Python
# 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 senlin.api.common import wsgi
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from senlin.common import context
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from senlin.common import exception
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from senlin.drivers import base as driver_base
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from senlin.rpc import client as rpc
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class TrustMiddleware(wsgi.Middleware):
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"""Extract trust info from request.
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The extracted information is filled into the request context.
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Senlin engine will use this information for access control.
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"""
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def _get_trust(self, ctx):
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"""List trusts with current user as the trustor.
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:param ctx: The requesting context.
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:return: ID of the trust or exception of InternalError.
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"""
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rpcc = rpc.EngineClient()
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res = rpcc.credential_get(ctx)
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if res:
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trust_id = res.get('trust', None)
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if trust_id:
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return trust_id
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params = {
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'auth_url': ctx.auth_url,
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'token': ctx.auth_token,
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'project_id': ctx.project,
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'user_id': ctx.user,
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}
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kc = driver_base.SenlinDriver().identity(params)
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service_cred = context.get_service_context()
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admin_id = kc.get_user_id(**service_cred)
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try:
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trust = kc.trust_get_by_trustor(ctx.user, admin_id, ctx.project)
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except exception.InternalError as ex:
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if ex.code == 400:
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trust = None
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else:
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raise ex
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if not trust:
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# Create a trust if no existing one found
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trust = kc.trust_create(ctx.user, admin_id, ctx.project, ctx.roles)
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# If credential not exists, create it, otherwise update it.
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rpcc.credential_create(ctx, trust.id)
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return trust.id
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def process_request(self, req):
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trust_id = self._get_trust(req.context)
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req.context.trusts = trust_id
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