stream-multipart-upload

Features

Install

npm install stream-multipart-upload

Example

Full example source

const server = http.createServer((req, res) => {
    const multipart = req.pipe(new Multipart({ headers: req.headers }));
    const zip = new Zip();
    const FS_UPLOADS_DIR = '/var/www/uploads';
    const S3_BUCKET = 'test-stream-multipart-upload';
    const S3_UPLOADS_PATH = 'uploads';
    const S3_TEMP_PATH = 'temp';
 
    multipart.once('data', () => {
        res.writeHead(200, { 'Content-Type': 'application/json' });
    });
 
    multipart.once('error', (err) => {
        if (!res.headersSent) {
            res.writeHead(400, { 'Content-Type': 'application/json' });
            res.end(JSON.stringify({ error: err.message }));
        }
    });
 
    multipart.pipe(new MultipartError()).pipe(zip);
    multipart.pipe(new Pick('metadata')).pipe(zip);
    multipart.pipe(new FileSize()).pipe(zip);
    multipart.pipe(new FileHash({ encoding: 'bs58' })).pipe(zip);
    multipart.pipe(new StorageTempLocal()).pipe(zip);
    multipart.pipe(new StorageTempS3({ bucket: S3_BUCKET, path: S3_TEMP_PATH })).pipe(zip);
    multipart.pipe(new Exiftool()).pipe(zip);
 
    zip
        .pipe(new Merge())
        .pipe(new StorageLocal({ dir: FS_UPLOADS_DIR }))
        .pipe(new StorageS3({ bucket: S3_BUCKET, path: S3_UPLOADS_PATH, saveMetadata: true }))
        .pipe(new StringifyError())
        .pipe(new JsonStream())
        .pipe(res);
});

API

Documentation

Performance

Hardware

KVM, 1 vCPU Intel Xeon E5-2670v2, 2GB RAM, SSD

Local server, local client, 30 DSLR photos with average size of 10Mb each

    task: concurrency=3, files-per-request=10
    requests: 3
    files: 30
    size: 314.42 Mb
    speed: 891.96 Mbit/s, 10.64 files per second

Local server, local client, 6610 exiftool sample images

exiftool sample images

    task: concurrency=10, files-per-request=10
    requests: 661
    files: 6610
    size: 181.34 Mb
    speed: 22.81 Mbit/s, 103.93 files per second
    cpu usage: 100% (40% node process, 60% exiftool process)