云功能将CSV写入云存储Node.JS

Question

我很惊讶地看到这个话题几乎没有在网上出现。

这是我尝试的解决方案：

我一次又一次地遇到错误，因为这似乎非常细微，互联网文档似乎不够用。

我在做什么错？该过程运行了一段时间，然后CF提示“出了点问题...”内存不足。

exports.fetchBilling = async (req, res) => {
  const storage = new Storage();
  const bucketName = uuid.v4();
  await storage.createBucket(bucketName);
  //this fetches my data, have confirmed this works
  var rows = await dataFrameQuery();
  var currAccount = null;
  var currFilename = null;
  var fileData = "";
  var writeStream = null;

  for(var i = 0; i < rows.length; i++) {
    var row = rows[i];
    if(row.ACCOUNT_ID !== currAccount) {
      if(currFilename !== null) {
        await writeStream.end();
      }
      currAccount = row.ACCOUNT_ID;
      const accName = getBillingName(currAccount);
      currFilename = "/tmp/" + i + ".csv";
      writeStream = fs.createWriteStream(currFilename);
    }

    var newLine = row.ACCOUNT_ID + 
      "," + row.PRODUCT +
      "," + row.RESOURCE_TYPE + 
      "," + row.SKU_ID + 
      "," + row.MONTH + 
      "," + row.QUANTITY + 
      "," + row.UNIT +
      "," + row.AMOUNT +
      "," + row.CREDIT +
      "," + row.CREDIT_DESC
      + "\n";

    await writeStream.write(newLine);
      

    if(i === rows.length - 1) {
       writeStream.end();
    }
  }
  await zipDirectory("/tmp/", "/tmp/zipped.gzip");
  await storage.bucket(bucketName).upload('/tmp/zipped.gzip');

  res.send("Done");
};

async function zipDirectory(source, dest) {
  const stream = fs.createWriteStream(dest);
  const archive = archiver('zip', { zlib: { level: 9 } });

  archive.on('error', function(err) {
  throw err;
  });

  await new Promise((resolve, reject) => {
    archive.pipe(stream);
    archive.directory(source, false);
    archive.on('error', err => {throw err;});
    archive.finalize();

    stream
        .on('close', function() {
        console.log(`zipped ${archive.pointer()} total bytes.`);
        resolve();
        });
  });
}