"Messages encoded with OCF are wrapped in a List" what for?

[romul]

Is there any reason why messages encoded with Codec.ObjectContainerFile are wrapped in a list?

I propose to rewrite ObjectContainerFile.decode/1 as:

  def decode(payload) when is_binary(payload) do
    with {:ok, {_, _, [decoded]}} <- do_decode(payload), do: {:ok, decoded}
  end

[Strech]

Hi @romul, thanks for you proposal! Unfortunately, I can't accept it because it is done to comply with the Avro specification.

The concept of the OCF is well described by this quote from the official docs

Avro includes a simple object container file format. A file has a schema, and all objects stored in the file must be written according to that schema, using binary encoding. Objects are stored in blocks that may be compressed.

So in other words you have a container (file, or bucket so to say) and you stuff it with objects (multiple records or a special case - 1 record). And because of that we should keep a list, even tho for the case with 1 record it seems redundant.