自然言語MongoDBクエリに Vertex AI拡張機能を使用する

import functions_framework
import os
import json
from pymongo import MongoClient
from bson import ObjectId
import traceback
from datetime import datetime
def connect_to_mongodb():
    client = MongoClient("<connection-string>")
    return client
def success_response(body):
    return {
        'statusCode': '200',
        'body': json.dumps(body, cls=DateTimeEncoder),
        'headers': {
            'Content-Type': 'application/json',
        },
    }
def error_response(err):
    error_message = str(err)
    return {
        'statusCode': '400',
        'body': error_message,
        'headers': {
            'Content-Type': 'application/json',
        },
    }
# Used to convert datetime object(s) to string
class DateTimeEncoder(json.JSONEncoder):
    def default(self, o):
        if isinstance(o, datetime):
            return o.isoformat()
        return super().default(o)
@functions_framework.http
def mongodb_crud(request):
    client = connect_to_mongodb()
    payload = request.get_json(silent=True)
    db, coll = payload['database'], payload['collection']
    request_args = request.args
    op = request.path
    try:
        if op == "/findOne":
            filter_op = payload['filter'] if 'filter' in payload else {}
            projection = payload['projection'] if 'projection' in payload else {}
            result = {"document": client[db][coll].find_one(filter_op, projection)}
            if result['document'] is not None:
                if isinstance(result['document']['_id'], ObjectId):
                    result['document']['_id'] = str(result['document']['_id'])
        elif op == "/find":
            agg_query = []
            if 'filter' in payload and payload['filter'] != {}:
                agg_query.append({"$match": payload['filter']})
            if "sort" in payload and payload['sort'] != {}:
                agg_query.append({"$sort": payload['sort']})
            if "skip" in payload:
                agg_query.append({"$skip": payload['skip']})
            if 'limit' in payload:
                agg_query.append({"$limit": payload['limit']})
            if "projection" in payload and payload['projection'] != {}:
                agg_query.append({"$project": payload['projection']})
            result = {"documents": list(client[db][coll].aggregate(agg_query))}
            for obj in result['documents']:
                if isinstance(obj['_id'], ObjectId):
                    obj['_id'] = str(obj['_id'])
        elif op == "/insertOne":
            if "document" not in payload or payload['document'] == {}:
                return error_response("Send a document to insert")
            insert_op = client[db][coll].insert_one(payload['document'])
            result = {"insertedId": str(insert_op.inserted_id)}
        elif op == "/insertMany":
            if "documents" not in payload or payload['documents'] == {}:
                return error_response("Send a document to insert")
            insert_op = client[db][coll].insert_many(payload['documents'])
            result = {"insertedIds": [str(_id) for _id in insert_op.inserted_ids]}
        elif op in ["/updateOne", "/updateMany"]:
            payload['upsert'] = payload['upsert'] if 'upsert' in payload else False
            if "_id" in payload['filter']:
                payload['filter']['_id'] = ObjectId(payload['filter']['_id'])
            if op == "/updateOne":
                update_op = client[db][coll].update_one(payload['filter'], payload['update'], upsert=payload['upsert'])
            else:
                update_op = client[db][coll].update_many(payload['filter'], payload['update'], upsert=payload['upsert'])
            result = {"matchedCount": update_op.matched_count, "modifiedCount": update_op.modified_count}
        elif op in ["/deleteOne", "/deleteMany"]:
            payload['filter'] = payload['filter'] if 'filter' in payload else {}
            if "_id" in payload['filter']:
                payload['filter']['_id'] = ObjectId(payload['filter']['_id'])
            if op == "/deleteOne":
                result = {"deletedCount": client[db][coll].delete_one(payload['filter']).deleted_count}
            else:
                result = {"deletedCount": client[db][coll].delete_many(payload['filter']).deleted_count}
        elif op == "/aggregate":
            if "pipeline" not in payload or payload['pipeline'] == []:
                return error_response("Send a pipeline")
            docs = list(client[db][coll].aggregate(payload['pipeline']))
            for obj in docs:
                if isinstance(obj['_id'], ObjectId):
                    obj['_id'] = str(obj['_id'])
            result = {"documents": docs}
        else:
            return error_response("Not a valid operation")
        return success_response(result)
    except Exception as e:
        print(traceback.format_exc())
        return error_response(e)
    finally:
        if client:
            client.close()

functions-framework==3.*
pymongo
pymongo[srv]