| Dir : /proc/self/root/opt/saltstack/salt/lib/python3.10/site-packages/zmq/sugar/ |
| Server: Linux ngx353.inmotionhosting.com 4.18.0-553.22.1.lve.1.el8.x86_64 #1 SMP Tue Oct 8 15:52:54 UTC 2024 x86_64 IP: 209.182.202.254 |
| Dir : //proc/self/root/opt/saltstack/salt/lib/python3.10/site-packages/zmq/sugar/attrsettr.py |
"""Mixin for mapping set/getattr to self.set/get"""
# Copyright (C) PyZMQ Developers
# Distributed under the terms of the Modified BSD License.
import errno
from typing import TypeVar, Union
from .. import constants
T = TypeVar("T")
OptValT = Union[str, bytes, int]
class AttributeSetter:
def __setattr__(self, key: str, value: OptValT) -> None:
"""set zmq options by attribute"""
if key in self.__dict__:
object.__setattr__(self, key, value)
return
# regular setattr only allowed for class-defined attributes
for cls in self.__class__.mro():
if key in cls.__dict__ or key in getattr(cls, "__annotations__", {}):
object.__setattr__(self, key, value)
return
upper_key = key.upper()
try:
opt = getattr(constants, upper_key)
except AttributeError:
raise AttributeError(
f"{self.__class__.__name__} has no such option: {upper_key}"
)
else:
self._set_attr_opt(upper_key, opt, value)
def _set_attr_opt(self, name: str, opt: int, value: OptValT) -> None:
"""override if setattr should do something other than call self.set"""
self.set(opt, value)
def __getattr__(self, key: str) -> OptValT:
"""get zmq options by attribute"""
upper_key = key.upper()
try:
opt = getattr(constants, upper_key)
except AttributeError:
raise AttributeError(
f"{self.__class__.__name__} has no such option: {upper_key}"
) from None
else:
from zmq import ZMQError
try:
return self._get_attr_opt(upper_key, opt)
except ZMQError as e:
# EINVAL will be raised on access for write-only attributes.
# Turn that into an AttributeError
# necessary for mocking
if e.errno in {errno.EINVAL, errno.EFAULT}:
raise AttributeError(f"{key} attribute is write-only")
else:
raise
def _get_attr_opt(self, name, opt) -> OptValT:
"""override if getattr should do something other than call self.get"""
return self.get(opt)
def get(self, opt: int) -> OptValT:
"""Override in subclass"""
raise NotImplementedError("override in subclass")
def set(self, opt: int, val: OptValT) -> None:
"""Override in subclass"""
raise NotImplementedError("override in subclass")
__all__ = ['AttributeSetter']