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34 lines
906 B
Python
34 lines
906 B
Python
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"""Trigger registry: in-memory dict + ``register_trigger`` API."""
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from __future__ import annotations
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from .types import TriggerDefinition
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_REGISTRY: dict[str, TriggerDefinition] = {}
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def register_trigger(trigger: TriggerDefinition) -> None:
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"""Add a trigger to the in-memory registry.
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Raises ``ValueError`` on duplicate ``type`` — registration runs
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once per process, so a duplicate is always a bug.
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"""
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if trigger.type in _REGISTRY:
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raise ValueError(
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f"Trigger already registered: {trigger.type!r}"
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)
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_REGISTRY[trigger.type] = trigger
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def get_trigger(trigger_type: str) -> TriggerDefinition | None:
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"""Look up one trigger by type. Returns ``None`` on miss."""
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return _REGISTRY.get(trigger_type)
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def all_triggers() -> dict[str, TriggerDefinition]:
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"""Snapshot of the registry as a defensive copy."""
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return dict(_REGISTRY)
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