For anyone that stumbles across this question in the future, I wrote a library to do this exact thing but with any plug GitHub - akoutmos/unplug: Unplug allows you to conditionally execute your Elixir plugs at run-time ยท GitHub
Using Unplug, you can provide a predicate module that gets evaluated under the context of the current plug, and you can specify whether you want the attached plug to be executed or not.
This is the best solution for my problem. I just wanted to stop the log spam of /health hits from my PaaS.
The Telemetry plug now accepts a callback that makes this very easy. There is a full example in the Phoenix docs (dynamic log level): Phoenix.Logger โ Phoenix v1.8.8
Thanks for the update @pgorczak, I adapted it a bit to ignore a list of paths this way:
plug Plug.Telemetry,
event_prefix: [:phoenix, :endpoint],
log: {__MODULE__, :log_level, []}
def log_level(%{path_info: [path_info]})
when path_info in ~W(healthcheck store-session destroy-session),
do: false
def log_level(_), do: :info