How to send API Requests in parallel? about wallaby

[phortx]

I'm not sure wether I fully understand how the sandbox is actually working, but seems like the issue here is that the request is handled by the LemonEx Plug outside of the phoenix routing and thus the sandbox is not correct setup. I've played around with several code snippets from the documentation for enabling the Ecto Sandbox for LiveView, but couldn't produce a working solution 🤔

[mhanberg]

Basically you'll want to add the relevant metadata to the useragent string in your request (you can use the functions in this module to create them https://hexdocs.pm/phoenix_ecto/4.6.1/Phoenix.Ecto.SQL.Sandbox.html) and make sure that it goes through the sandbox plug that is in your endpoint

[mhanberg]

To clarify (because the docs I listed show how to set it up for "external clients"), the wallaby test has already checked out a db connection for your test, and ensured that the LV/controller process uses that connection.

The problem is that your webhook request controller doesn't know what db connection to checkout, but that is what the user agent meta string will tell the sandbox plug what to do

[phortx]

To clarify (because the docs I listed show how to set it up for "external clients"), the wallaby test has already checked out a db connection for your test, and ensured that the LV/controller process uses that connection.

You're right, that's what I figured out too.

I think I solved the issue by adding:

metadata =
      MyApp.Repo
      |> Phoenix.Ecto.SQL.Sandbox.metadata_for(self())
      |> Phoenix.Ecto.SQL.Sandbox.encode_metadata()

and then passing this as user-agent header to the api request. Seems to work :)

Thank you very much for your help!