Hello community

I’ve recently released plug_loopback, a library to programmatically call your own (Phoenix) endpoints:

You can form a new request from a Phoenix endpoint:

MyAppWeb.Endpoint
|> PlugLoopback.from_phoenix_endpoint()
|> PlugLoopback.get("/some/path", [{"some", "header"}])
|> Plug.Conn.put_req_header("another", "header")
|> PlugLoopback.run()

or replay any Plug.Conn{}:

conn
|> PlugLoopback.replay()
|> PlugLoopback.run() # Here is a very good opportunity to create an infinite loop!

I needed it to implement the stale-while-revalidate cache-control header in plug_http_cache, but it can be useful for other uses-cases:

• warming up cache at startup by directly calling the pages you want to cache
• debugging in the shell
• and probably others

It’s very similar to Phoenix.ConnTest but intends to be more production-ready (replays / auto-encodes the body, simple API) and possibly be Phoenix-independant in the future.

Any suggestion or contribution is welcome.

Cheers

https://github.com/tanguilp/plug_loopback