55 lines
2.0 KiB
Python
55 lines
2.0 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2015 Hewlett-Packard Development Company, L.P.
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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 oslo_log import log as logging
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import taskflow.retry as retry
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LOG = logging.getLogger(__name__)
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class ExceptionTimes(retry.Times):
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"""Retries subflow given number of times. Returns attempt number.
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:param attempts: number of attempts to retry the associated subflow
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before giving up
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:type attempts: int
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:param revert_all: when provided this will cause the full flow to revert
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when the number of attempts that have been tried
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has been reached (when false, it will only locally
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revert the associated subflow)
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:type revert_all: bool
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Further arguments are interpreted as defined in the
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:py:class:`~taskflow.atom.Atom` constructor.
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"""
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def __init__(self, revert_exception_list=None, **kwargs):
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super(ExceptionTimes, self).__init__(**kwargs)
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if revert_exception_list:
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self._revert_exception_list = revert_exception_list
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else:
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self._revert_exception_list = []
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def on_failure(self, history, *args, **kwargs):
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(owner, outcome) = history.outcomes_iter(len(history) - 1).next()
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if type(outcome.exception) in self._revert_exception_list:
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return self._revert_action
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return super(ExceptionTimes, self).on_failure(history, args, kwargs)
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def execute(self, history, *args, **kwargs):
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return len(history) + 1
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