Rest api: add endpoint to download ArrayData

[waychal]

Currently the endpoint is provided to get general information of ArrayData but there is no endpoint available to download the raw data (numpy array) stored in ArrayData.

Add endpoint for ArrayData to get the size of the raw data and also to download it.

[JPchico]

I was wondering if there is anything planned to address this issue? Do you know if there are any plans @chrisjsewell ?

Otherwise I would happily work on this, as it would be great to be able to gather data from ArrayData directly form the REST API.

[chrisjsewell]

Heya, we are working on a whole new rest api: https://github.com/aiidateam/aiida-restapi

[JPchico]

That is great! For what I understand it seems to be based in GraphQL? Should we move this discussion there? Would be very good to be able to access information stored in the ArrayData as JSON or similar formats so that one can visualize data from a calculation in a webservice.

[JPchico]

@chrisjsewell there is a PR now (with passing tests) that addresses this issue. Basically a _prepare_json function that works for the orm.ArrayData. It is nothing fancy but it gets the job done :) .

[JPchico]

Hi @sphuber I think that this issue can be closed as your PR #5425 should resolve it.
Thanks for the merge BTW!

[chrisjsewell]

Cheers @JPchico, you just reminded me to email you 😅