AWS 无服务器 S3 上传不上传文件

Question

I have a AWS serverless app that needs to upload files to S3. The files are not uploaded and no error is received. It's the same result when I run it locally with 'sam local' that has no S3 connection. The last line that gets printed is 'logger.debug('Uploading to S3', uploadParams);' Why do you think no error is received?

async function uploadFileToS3 (fileAttributes) {
    // call S3 to retrieve upload file to specified bucket
    const uploadParams = { Bucket: bucket, Key: '', Body: '' };

    const fileStream = fs.createReadStream(fileAttributes.filepath);
    fileStream.on('error', (err) => {
        logger.error('File Error', err);
    });
    uploadParams.Body = fileStream;
    uploadParams.Key = fileAttributes.filename;

    logger.debug('Uploading to S3', uploadParams);
    // call S3 to retrieve upload file to specified bucket
    try {
        const stored = await s3.upload(uploadParams).promise();
        logger.info('Upload Success', stored);
    } catch (err) {
        logger.error('S3 upload error', err);
    }
}

Answer 1

The issue was that the uploadFileToS3 was called in a forEach loop which is not promise aware.