23 lines
766 B
Python
23 lines
766 B
Python
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"""blocking_event_loop -- phase-0-base-project-spec.md §7. Owned by `fraud`."""
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import hashlib
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import time
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from common.chaos_flags import is_enabled
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_CPU_WORK_SECONDS = 0.15
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async def blocking_event_loop_enabled() -> bool:
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return await is_enabled("blocking_event_loop")
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def synchronous_cpu_work() -> None:
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"""~120ms of real, synchronous, CPU-bound work run directly inside an
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`async def` handler -- no run_in_executor/to_thread. This is the point:
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it blocks the whole event loop, serialising every other in-flight
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request on this worker for the duration."""
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deadline = time.perf_counter() + _CPU_WORK_SECONDS
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data = b"ledgerline-fraud-scoring"
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while time.perf_counter() < deadline:
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data = hashlib.sha256(data).digest()
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