Connecting to MongoDB Atlas from Google Cloud Functions

MongoDB Atlas
,
3

Hi Pavel,

Yes, global variables are supported in GC Functions and I’ve already used them. Here is my implementation:

var client;

const getClient = async () => {
	if (client && client.isConnected()) {
		console.log("MONGODB CLIENT ALREADY CONNECTED!");
	} else
		try {
			client = await MongoClient.connect(url, {
				useNewUrlParser: true,
				useUnifiedTopology: true,
			});
			console.log("MONGODB CLIENT RECONNECTED!");
		} catch (e) {
			throw e;
		}

	return client;
};

exports.getPlacesFromDB = functions.https.onCall((data, context) => {
    var limitOption = 10;
    var query = {};
    var sortOption = {};
    return getClient().then((client) => {
        const db = client.db("database");
        const collection = db.collection("collection");
        
        var _cursor = collection.find(query).skip(skips).limit(limitOption).sort(sortOption);
        return _cursor.map(({ _id, ...d }) => ({ _id: _id.toString(), ...d })).toArray().then((result) => {
            // Returning the message to the client.
            return { text: 'Retrieved data!', data: result };
          })
          .catch((error) => {
              functions.logger.log("error:", error.message);
              throw new functions.https.HttpsError('cannot get data!', error.message, error);
            });
        }).catch((error) => {
          functions.logger.log("error:", error.message);
          throw new functions.https.HttpsError('no connection', error.message, error);
        });
});

In the AWS article I shared, they are suggesting to disable callbackWaitsForEmptyEventLoop in the Context object of the Lambda function. I am trying to see how can this be done in GCP?

Thanks!