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d992912 | 1 2 3 4 5 6 7 8 9 10 11 12 13 | from fastapi import Request
from backend.app.engine.search_engine import ASOSSearchEngine
from backend.app.exceptions import EngineNotReadyError
def get_engine(request: Request) -> ASOSSearchEngine:
"""FastAPI dependency: retrieve the engine singleton from app state."""
engine: ASOSSearchEngine = getattr(request.app.state, "engine", None)
if engine is None or not engine._is_ready:
raise EngineNotReadyError("Search engine is not ready")
return engine
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