247 lines
10 KiB
Python
247 lines
10 KiB
Python
from fastapi import APIRouter, HTTPException, Depends
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from pydantic import ValidationError
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from sqlalchemy.orm import Session, joinedload
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from typing import List, Optional
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from ..models import Dewar as DewarModel, Slot as SlotModel, LogisticsEvent as LogisticsEventModel
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from ..schemas import LogisticsEventCreate, SlotSchema, Dewar as DewarSchema
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from ..database import get_db
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import logging
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from datetime import datetime, timedelta
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router = APIRouter()
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logging.basicConfig(level=logging.INFO)
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logger = logging.getLogger(__name__)
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def calculate_time_until_refill(last_refill: Optional[datetime], refill_interval_hours: int = 1) -> int:
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refill_interval = timedelta(hours=refill_interval_hours)
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now = datetime.now()
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if not last_refill:
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return -1 # Sentinel value indicating no refill event recorded
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time_until_next_refill = last_refill + refill_interval - now
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return max(0, int(time_until_next_refill.total_seconds()))
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@router.post("/dewars/return", response_model=DewarSchema)
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async def return_to_storage(data: LogisticsEventCreate, db: Session = Depends(get_db)):
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logger.info(f"Returning dewar to storage: {data.dewar_qr_code} at location {data.location_qr_code}")
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try:
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# Log the incoming payload
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logger.info("Received payload: %s", data.json())
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dewar = db.query(DewarModel).filter(DewarModel.unique_id == data.dewar_qr_code).first()
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if not dewar:
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logger.error(f"Dewar not found for unique ID: {data.dewar_qr_code}")
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raise HTTPException(status_code=404, detail="Dewar not found")
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original_slot = db.query(SlotModel).filter(SlotModel.dewar_unique_id == data.dewar_qr_code).first()
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if original_slot and original_slot.qr_code != data.location_qr_code:
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logger.error(f"Dewar {data.dewar_qr_code} is associated with slot {original_slot.qr_code}")
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raise HTTPException(status_code=400, detail=f"Dewar {data.dewar_qr_code} is associated with a different slot {original_slot.qr_code}.")
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slot = db.query(SlotModel).filter(SlotModel.qr_code == data.location_qr_code).first()
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if not slot:
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logger.error(f"Slot not found for QR code: {data.location_qr_code}")
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raise HTTPException(status_code=404, detail="Slot not found")
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if slot.occupied and slot.dewar_unique_id != data.dewar_qr_code:
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logger.error(f"Slot {data.location_qr_code} is already occupied by another dewar")
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raise HTTPException(status_code=400, detail="Selected slot is already occupied by another dewar")
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# Update slot with dewar information
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slot.dewar_unique_id = dewar.unique_id
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slot.occupied = True
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dewar.last_retrieved_timestamp = None
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# Log the event
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log_event(db, dewar.id, slot.id, "returned")
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db.commit()
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logger.info(f"Dewar {data.dewar_qr_code} successfully returned to storage slot {slot.qr_code}.")
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db.refresh(dewar)
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return dewar
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except ValidationError as e:
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logger.error(f"Validation error: {e.json()}")
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raise HTTPException(status_code=400, detail="Invalid payload")
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except Exception as e:
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logger.error(f"Unexpected error: {str(e)}")
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raise HTTPException(status_code=500, detail="Internal server error")
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@router.post("/dewar/scan", response_model=dict)
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async def scan_dewar(event_data: LogisticsEventCreate, db: Session = Depends(get_db)):
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logger.info(f"Received event data: {event_data}")
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dewar_qr_code = event_data.dewar_qr_code
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location_qr_code = event_data.location_qr_code
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transaction_type = event_data.transaction_type
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if not dewar_qr_code or not dewar_qr_code.strip():
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logger.error("Dewar QR Code is null or empty")
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raise HTTPException(status_code=422, detail="Dewar QR Code cannot be null or empty")
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dewar = db.query(DewarModel).filter(DewarModel.unique_id == dewar_qr_code).first()
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if not dewar:
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raise HTTPException(status_code=404, detail="Dewar not found")
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slot = db.query(SlotModel).filter(SlotModel.qr_code == location_qr_code).first()
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if transaction_type == 'incoming':
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if not slot or slot.occupied:
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logger.error(f"Slot not found or already occupied: {slot}")
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raise HTTPException(status_code=400, detail="Slot not found or already occupied")
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slot.dewar_unique_id = dewar.unique_id
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slot.occupied = True
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elif transaction_type == 'outgoing':
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if not slot or not slot.occupied or slot.dewar_unique_id != dewar.unique_id:
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logger.error(f"Slot not found or dewar not associated with slot: {slot}")
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raise HTTPException(status_code=400, detail="Slot not found or dewar not associated with slot")
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slot.dewar_unique_id = None
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slot.occupied = False
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elif transaction_type == 'beamline':
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if not slot:
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logger.error(f"Beamline location not found: {location_qr_code}")
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raise HTTPException(status_code=400, detail="Beamline location not found")
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dewar.beamline_location = location_qr_code
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logger.info(f"Dewar {dewar_qr_code} assigned to beamline {location_qr_code}")
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log_event(db, dewar.id, slot.id if slot else None, transaction_type)
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db.commit()
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return {"message": "Status updated successfully"}
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@router.get("/slots", response_model=List[SlotSchema])
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async def get_all_slots(db: Session = Depends(get_db)):
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slots = db.query(SlotModel).options(joinedload(SlotModel.dewar)).all()
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slots_with_refill_time = []
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for slot in slots:
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time_until_refill = None
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retrievedTimestamp = None
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beamlineLocation = None
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at_beamline = False
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retrieved = False
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if slot.dewar_unique_id:
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# Calculate time until refill
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last_refill_event = db.query(LogisticsEventModel) \
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.join(DewarModel, DewarModel.id == LogisticsEventModel.dewar_id) \
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.filter(
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DewarModel.unique_id == slot.dewar.unique_id,
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LogisticsEventModel.event_type == "refill"
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) \
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.order_by(LogisticsEventModel.timestamp.desc()) \
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.first()
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if last_refill_event:
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last_refill = last_refill_event.timestamp
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time_until_refill = calculate_time_until_refill(last_refill)
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else:
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time_until_refill = -1
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# Get last retrieved timestamp
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last_retrieved_event = db.query(LogisticsEventModel) \
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.join(DewarModel, DewarModel.id == LogisticsEventModel.dewar_id) \
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.filter(
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DewarModel.unique_id == slot.dewar.unique_id,
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LogisticsEventModel.event_type == "retrieved"
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) \
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.order_by(LogisticsEventModel.timestamp.desc()) \
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.first()
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if last_retrieved_event:
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retrievedTimestamp = last_retrieved_event.timestamp.isoformat()
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retrieved = True
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# Determine the last event excluding refills
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last_event = db.query(LogisticsEventModel) \
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.join(DewarModel, DewarModel.id == LogisticsEventModel.dewar_id) \
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.filter(
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DewarModel.unique_id == slot.dewar.unique_id,
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LogisticsEventModel.event_type != "refill"
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) \
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.order_by(LogisticsEventModel.timestamp.desc()) \
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.first()
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if last_event:
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associated_slot = db.query(SlotModel).filter(SlotModel.id == last_event.slot_id).first()
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beamlineLocation = associated_slot.label if associated_slot else None
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at_beamline = last_event.event_type == "beamline"
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slot_data = SlotSchema(
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id=slot.id,
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qr_code=slot.qr_code,
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label=slot.label,
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qr_base=slot.qr_base,
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occupied=slot.occupied,
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needs_refill=slot.needs_refill,
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dewar_unique_id=slot.dewar_unique_id,
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dewar_name=slot.dewar.dewar_name if slot.dewar else None,
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time_until_refill=time_until_refill,
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at_beamline=at_beamline,
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retrieved=retrieved,
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retrievedTimestamp=retrievedTimestamp,
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beamlineLocation=beamlineLocation,
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)
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logger.info(f"Dewar retrieved: {retrieved}")
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logger.info(f"Dewar at: {beamlineLocation}")
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slots_with_refill_time.append(slot_data)
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return slots_with_refill_time
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@router.post("/dewar/refill", response_model=dict)
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async def refill_dewar(qr_code: str, db: Session = Depends(get_db)):
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logger.info(f"Refilling dewar with QR code: {qr_code}")
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dewar = db.query(DewarModel).filter(DewarModel.unique_id == qr_code.strip()).first()
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if not dewar:
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logger.error("Dewar not found")
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raise HTTPException(status_code=404, detail="Dewar not found")
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now = datetime.now()
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new_event = LogisticsEventModel(
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dewar_id=dewar.id,
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slot_id=None,
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event_type="refill",
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timestamp=now,
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)
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db.add(new_event)
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db.commit()
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time_until_refill_seconds = calculate_time_until_refill(now)
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logger.info(f"Dewar refilled successfully with time_until_refill: {time_until_refill_seconds}")
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return {"message": "Dewar refilled successfully", "time_until_refill": time_until_refill_seconds}
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@router.get("/dewars", response_model=List[DewarSchema])
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async def get_all_dewars(db: Session = Depends(get_db)):
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dewars = db.query(DewarModel).all()
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return dewars
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@router.get("/dewar/{unique_id}", response_model=DewarSchema)
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async def get_dewar_by_unique_id(unique_id: str, db: Session = Depends(get_db)):
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logger.info(f"Received request for dewar with unique_id: {unique_id}")
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dewar = db.query(DewarModel).filter(DewarModel.unique_id == unique_id.strip()).first()
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if not dewar:
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logger.warning(f"Dewar with unique_id '{unique_id}' not found.")
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raise HTTPException(status_code=404, detail="Dewar not found")
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logger.info(f"Returning dewar: {dewar}")
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return dewar
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def log_event(db: Session, dewar_id: int, slot_id: Optional[int], event_type: str):
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new_event = LogisticsEventModel(
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dewar_id=dewar_id,
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slot_id=slot_id,
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event_type=event_type,
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timestamp=datetime.now()
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)
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db.add(new_event)
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db.commit()
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logger.info(f"Logged event: {event_type} for dewar: {dewar_id} in slot: {slot_id if slot_id else 'N/A'}") |