handler.py

from huggingface_hub import hf_hub_download
from typing import Dict, List, Any
from ultralytics import YOLO
import json

class EndpointHandler():
    def __init__(self, path=""):
        hf_hub_download(repo_id="Drazcat-AI/nectar", filename="yolov8_nectar/runs/detect/train/weights/best.pt")
        self.model = YOLO(hf_hub_download(repo_id="Drazcat-AI/nectar", filename="yolov8_nectar/runs/detect/train/weights/best.pt", local_files_only=True))
    
    def predict_objects(self, image_path):
        results = self.model(image_path, imgsz=800)
        predictions = []
        for box in results[0].boxes:
            class_id = results[0].names[box.cls[0].item()]
            cords = box.xywh[0].tolist()
            cords = [round(x) for x in cords]
            conf = round(box.conf[0].item(), 2)
            prediction = {
            "label": class_id,
            "score": conf,
            "box":{
                "x": cords[0],
                "y": cords[1],
                "width": cords[2],
                "height": cords[3]}
            }
            predictions.append(prediction)
        predictions_array = {"predictions": predictions}   

        return predictions_array

    def __call__(self, event):
        if "inputs" not in event:
            return {
                "statusCode": 400,
                "body": json.dumps("Error: Please provide an 'inputs' parameter."),
            }

        image_path = event["inputs"]

        try:
            predictions = self.predict_objects(image_path)
            return {
                "statusCode": 200,
                "body": json.dumps(predictions),
            }
        except Exception as e:
            return {
                "statusCode": 500,
                "body": json.dumps(f"Error: {str(e)}"),
            }