New object store file upload example

[Joe Mordica]

When using NodeJS to upload a file via like:

await os.put({name: 'filename.gz'}, this.readableStreamFrom(fs.readFileSync(./filename.gz)))

readableStreamFrom(data: Uint8Array): ReadableStream<Uint8Array> {
  return new ReadableStream<Uint8Array>({
    pull(controller) {
      controller.enqueue(data);
      controller.close();
    }
  })
}

The file uploads properly but when downloading the file (using nats cli) it is corrupt and wont extract. It shouldn't matter but the example uses a gzipped file.

Any pointers for how the file should be passed in? The example is just encoding/decoding a string but I believe files are read in as a buffer type.

Thanks.

[Alberto Ricart]

My guess is that because it is a Buffer, there may be some unexpected data in there...
Perhaps try obtaining the ArrayBuffer from Node's Buffer, and then creating an Uint8Array from it.

[Alberto Ricart]

I went to look at the implementation, and it is possible for an entry to not have a hash, which would trigger it as being corrupt. Posting a fix right now.

[Alberto Ricart]

This may not be your issue exactly, but could be, I will release @next versions of nats.ws so you can test.

[Alberto Ricart]

@jmordica npm install nats.ws@next to get 1.10.0-1

[Joe Mordica]

Sweet! Installing the new version worked! For anyone else dealing with this here's how I am now successfully uploading a file to object store:

await os.put({name: 'someFile.gz'}, this.readableStreamFrom(fs.readFileSync('path/to/someFile.gz')));