从url下载文件并将其上传到AWS S3而不保存

这是一些可以很好地做到这一点的javascript：

    var options = {        uri: uri,        encoding: null    };    request(options, function(error, response, body) {        if (error || response.statusCode !== 200) {  console.log("failed to get image"); console.log(error);        } else { s3.putObject({     Body: body,     Key: path,     Bucket: 'bucket_name' }, function(error, data) {      if (error) {         console.log("error downloading image to s3");     } else {         console.log("success uploading to s3");     } });         }       });