如何在Stitch中运行一个事务下的MongoDB多查询？

exports = async function() {
  const mongoClient = context.services.get("mongodb-atlas").db("your_database").client;
  const session = mongoClient.startSession();
  session.startTransaction();

  try {
    const collection = mongoClient.db("your_database").collection("your_collection");

    // 在事务中执行的第一个查询
    const query1 = { ... };
    const result1 = await collection.find(query1).toArray();

    // 在事务中执行的第二个查询
    const query2 = { ... };
    const result2 = await collection.find(query2).toArray();

    // 可以在此处添加更多查询

    // 提交事务
    await session.commitTransaction();
    session.endSession();

    return {
      result1,
      result2
    };
  } catch (error) {
    // 回滚事务
    await session.abortTransaction();
    session.endSession();

    throw error;
  }
};

exports = function() {
  const mongodb = context.services.get("mongodb-atlas");
  const myDB = mongodb.db("your_database");
  const myCollection = myDB.collection("your_collection");

  const changeStream = myCollection.watch([]);

  changeStream.onNext((event) => {
    if (event.operationType === 'insert') {
      runTransaction();
    }
  });
};