forked from goodboy/tractor
Add nooz
parent
efb8bec828
commit
203f95615c
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Rework our ``.trionics.BroadcastReceiver`` internals to avoid method
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recursion and approach a design and interface closer to ``trio``'s
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``MemoryReceiveChannel``.
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The details of the internal changes include:
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- implementing a ``BroadcastReceiver.receive_nowait()`` and using it
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within the async ``.receive()`` thus avoiding recursion from
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``.receive()``.
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- failing over to an internal ``._receive_from_underlying()`` when the
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``_nowait()`` call raises ``trio.WouldBlock``
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- adding ``BroadcastState.statistics()`` for debugging and testing both
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internals and by users.
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- add an internal ``BroadcastReceiver._raise_on_lag: bool`` which can be
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set to avoid ``Lagged`` raising for possible use cases where a user
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wants to choose between a [cheap or nasty
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pattern](https://zguide.zeromq.org/docs/chapter7/#The-Cheap-or-Nasty-Pattern)
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the the particular stream (we use this in ``piker``'s dark clearing
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engine to avoid fast feeds breaking during HFT periods).
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