/usr/lib/python3/dist-packages/tenacity/retry.py is in python3-tenacity 4.8.0-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 | # Copyright 2016 Julien Danjou
# Copyright 2016 Joshua Harlow
# Copyright 2013-2014 Ray Holder
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import abc
import six
@six.add_metaclass(abc.ABCMeta)
class retry_base(object):
"""Abstract base class for retry strategies."""
@abc.abstractmethod
def __call__(self, attempt):
pass
def __and__(self, other):
return retry_all(self, other)
def __or__(self, other):
return retry_any(self, other)
class _retry_never(retry_base):
"""Retry strategy that never rejects any result."""
def __call__(self, attempt):
return False
retry_never = _retry_never()
class _retry_always(retry_base):
"""Retry strategy that always rejects any result."""
def __call__(self, attempt):
return True
retry_always = _retry_always()
class retry_if_exception(retry_base):
"""Retry strategy that retries if an exception verifies a predicate."""
def __init__(self, predicate):
self.predicate = predicate
def __call__(self, attempt):
if attempt.failed:
return self.predicate(attempt.exception())
class retry_if_exception_type(retry_if_exception):
"""Retries if an exception has been raised of one or more types."""
def __init__(self, exception_types=Exception):
self.exception_types = exception_types
super(retry_if_exception_type, self).__init__(
lambda e: isinstance(e, exception_types))
class retry_unless_exception_type(retry_if_exception):
"""Retries until an exception is raised of one or more types."""
def __init__(self, exception_types=Exception):
self.exception_types = exception_types
super(retry_unless_exception_type, self).__init__(
lambda e: not isinstance(e, exception_types))
def __call__(self, attempt):
# always retry if no exception was raised
if not attempt.failed:
return True
return self.predicate(attempt.exception())
class retry_if_result(retry_base):
"""Retries if the result verifies a predicate."""
def __init__(self, predicate):
self.predicate = predicate
def __call__(self, attempt):
if not attempt.failed:
return self.predicate(attempt.result())
class retry_if_not_result(retry_base):
"""Retries if the result refutes a predicate."""
def __init__(self, predicate):
self.predicate = predicate
def __call__(self, attempt):
if not attempt.failed:
return not self.predicate(attempt.result())
class retry_any(retry_base):
"""Retries if any of the retries condition is valid."""
def __init__(self, *retries):
self.retries = retries
def __call__(self, attempt):
return any(map(lambda x: x(attempt), self.retries))
class retry_all(retry_base):
"""Retries if all the retries condition are valid."""
def __init__(self, *retries):
self.retries = retries
def __call__(self, attempt):
return all(map(lambda x: x(attempt), self.retries))
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