75 lines
1.9 KiB
Python
75 lines
1.9 KiB
Python
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import functools
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from types import coroutine
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def delegate_to_executor(*attrs):
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def cls_builder(cls):
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for attr_name in attrs:
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setattr(cls, attr_name, _make_delegate_method(attr_name))
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return cls
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return cls_builder
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def proxy_method_directly(*attrs):
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def cls_builder(cls):
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for attr_name in attrs:
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setattr(cls, attr_name, _make_proxy_method(attr_name))
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return cls
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return cls_builder
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def proxy_property_directly(*attrs):
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def cls_builder(cls):
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for attr_name in attrs:
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setattr(cls, attr_name, _make_proxy_property(attr_name))
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return cls
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return cls_builder
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def cond_delegate_to_executor(*attrs):
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def cls_builder(cls):
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for attr_name in attrs:
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setattr(cls, attr_name, _make_cond_delegate_method(attr_name))
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return cls
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return cls_builder
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def _make_delegate_method(attr_name):
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@coroutine
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def method(self, *args, **kwargs):
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cb = functools.partial(getattr(self._file, attr_name), *args, **kwargs)
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return (yield from self._loop.run_in_executor(self._executor, cb))
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return method
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def _make_proxy_method(attr_name):
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def method(self, *args, **kwargs):
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return getattr(self._file, attr_name)(*args, **kwargs)
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return method
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def _make_proxy_property(attr_name):
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def proxy_property(self):
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return getattr(self._file, attr_name)
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return property(proxy_property)
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def _make_cond_delegate_method(attr_name):
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"""For spooled temp files, delegate only if rolled to file object"""
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async def method(self, *args, **kwargs):
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if self._file._rolled:
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cb = functools.partial(getattr(self._file, attr_name), *args, **kwargs)
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return await self._loop.run_in_executor(self._executor, cb)
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else:
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return getattr(self._file, attr_name)(*args, **kwargs)
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return method
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