通过实时分析改进航班运营

import base64
import json
from bson import ObjectId
import os
from pymongo import MongoClient
import functions_framework
# Triggered from a message on a Cloud Pub/Sub topic.
@functions_framework.cloud_event
def postPath(cloud_event):
    # Access URI in secrets
    MONGO_URI = os.environ.get('MONGO_URI', "MONGO_URI is not set.")
    MONGO_DATABASE = os.environ.get('MONGO_DATABASE', "MONGO_DATABASE is not set.")
    MONGO_COLLECTION = os.environ.get('MONGO_COLLECTION', "MONGO_COLLECTION is not set.")
    if not all([MONGO_URI, MONGO_DATABASE, MONGO_COLLECTION]):
        print("Error: One or more environment variables are not set.")
        return
    client = MongoClient(MONGO_URI)
    db = client[MONGO_DATABASE]
    collection = db[MONGO_COLLECTION]
    try:
        # Parse the data in the message
        byte_message = base64.b64decode(cloud_event.data["message"]["data"])
        json_str = byte_message.decode('utf-8')
        data_dict = json.loads(json_str)
        print(data_dict)
        # Work with the dictionary fields
        flight_id = data_dict.get("flight_id")
        initial_path = data_dict.get("initial_path_airps")
        new_path = data_dict.get("new_path_airps")
        disruption_coords = data_dict.get("disruption_coords")
        # Check if all required fields are present
        if not flight_id:
            print("Error: flight_id is missing.")
            return
        if initial_path is None or new_path is None:
            print("Error: One or more path fields are missing.")
            return
        # Find the document in the MongoDB collection and update the path field
        result = collection.update_one(
            {"_id": ObjectId(flight_id)},
            {"$set": {
                "initial_path": initial_path,
                "new_path": new_path,
                "disruption_coords": {
                    "lat": disruption_coords[0],
                    "long": disruption_coords[1]
                }
            }}
        )
        if result.matched_count > 0:
            print("Document successfully updated.")
        else:
            print("No document found with the specified flight_number.")
    except Exception as e:
        print(f"Error updating document: {e}")
    finally:
        client.close()