e0ecbad03a
Scheduling backups of Cinder volumes using centralized instance(s) of freezer-scheduler requires executing tasks on behalf of the user. Client capabilities provide a mechanism to restrict which actions, modes, storages, and engines can be assigned to freezer-scheduler for security and workload control. The core implementation of client capabilities resides in freezer-scheduler. The primary purpose of checking capabilities on the freezer-api side is to prevent the assignment of actions that cannot be executed by a specific scheduler instance. Implements: blueprint centralized-scheduler Depends-On: I15a91e8232d07e5bbc2cc95a72b0405c61c64a72 Change-Id: Ie774f9e66ac373a43ef935775de3b18539c5bebd
111 lines
3.0 KiB
Python
111 lines
3.0 KiB
Python
"""
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(c) Copyright 2014,2015 Hewlett-Packard Development Company, L.P.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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"""
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import logging
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import falcon
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from freezer_api.common._i18n import _
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class FreezerAPIException(falcon.HTTPError):
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"""
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Base Freezer API Exception
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"""
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message = "unknown error"
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def __init__(self, message=''):
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if message:
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self.message = _(str(message)) # noqa
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logging.error(message)
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Exception.__init__(self, message)
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@staticmethod
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def handle(ex, req, resp, params):
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raise falcon.HTTPError(_('500 unknown server error'),
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title=_("Internal Server Error"),
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description=FreezerAPIException.message)
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class BadDataFormat(FreezerAPIException):
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@staticmethod
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def handle(ex, req, resp, params):
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raise falcon.HTTPBadRequest(
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title=_("Bad request format"),
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description=ex.message)
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class UnprocessableEntity(FreezerAPIException):
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@staticmethod
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def handle(ex, req, resp, params):
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raise falcon.HTTPUnprocessableEntity(
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title=_("Unprocessable Entity"),
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description=ex.message)
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class DocumentExists(FreezerAPIException):
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@staticmethod
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def handle(ex, req, resp, params):
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raise falcon.HTTPConflict(
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title=_("Document already existing"),
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description=ex.message)
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class StorageEngineError(FreezerAPIException):
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@staticmethod
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def handle(ex, req, resp, params):
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raise falcon.HTTPInternalServerError(
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title=_("Internal Storage Error"),
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description=ex.message)
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class DocumentNotFound(FreezerAPIException):
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@staticmethod
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def handle(ex, req, resp, params):
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raise falcon.HTTPError(
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status=falcon.HTTP_404,
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title=_("Not Found"),
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description=ex.message)
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class AccessForbidden(FreezerAPIException):
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@staticmethod
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def handle(ex, req, resp, params):
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raise falcon.HTTPForbidden(
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title=_("Access Forbidden"),
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description="You are not allowed to access this resource")
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class MethodNotImplemented(FreezerAPIException):
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@staticmethod
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def handle(ex, req, resp, params):
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raise falcon.HTTPMethodNotAllowed(
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title=_("Bad Method"),
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description=ex.message,
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allowed_methods=['GET', 'POST', 'HEAD', 'PATCH', 'DELETE'])
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exception_handlers_catalog = [
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BadDataFormat,
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DocumentExists,
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StorageEngineError,
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DocumentNotFound,
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AccessForbidden,
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MethodNotImplemented
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]
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