66 lines
1.8 KiB
Python
66 lines
1.8 KiB
Python
import trio
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import tractor
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async def name_error():
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"Raise a ``NameError``"
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getattr(doggypants) # noqa
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async def spawn_until(depth=0):
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""""A nested nursery that triggers another ``NameError``.
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"""
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async with tractor.open_nursery() as n:
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if depth < 1:
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# await n.run_in_actor('breakpoint_forever', breakpoint_forever)
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await n.run_in_actor(name_error)
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else:
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depth -= 1
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await n.run_in_actor(
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spawn_until,
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depth=depth,
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name=f'spawn_until_{depth}',
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)
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async def main():
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"""The main ``tractor`` routine.
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The process tree should look as approximately as follows when the debugger
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first engages:
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python examples/debugging/multi_nested_subactors_bp_forever.py
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├─ python -m tractor._child --uid ('spawner1', '7eab8462 ...)
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│ └─ python -m tractor._child --uid ('spawn_until_0', '3720602b ...)
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│ └─ python -m tractor._child --uid ('name_error', '505bf71d ...)
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│
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└─ python -m tractor._child --uid ('spawner0', '1d42012b ...)
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└─ python -m tractor._child --uid ('name_error', '6c2733b8 ...)
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"""
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async with tractor.open_nursery(
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debug_mode=True,
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loglevel='warning'
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) as n:
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# spawn both actors
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portal = await n.run_in_actor(
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spawn_until,
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depth=0,
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name='spawner0',
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)
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portal1 = await n.run_in_actor(
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spawn_until,
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depth=1,
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name='spawner1',
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)
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# nursery cancellation should be triggered due to propagated
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# error from child.
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await portal.result()
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await portal1.result()
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if __name__ == '__main__':
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trio.run(main)
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