Hi, I am writing the Elixir integration for AppSignal, an application metrics solution. As of such, I am looking for a way to decorate functions in a developer-friendly way, so that these functions are automagically wrapped with library calls to measure the time it took to execute them (and send th…

I partly agree with you… however, I use Java a lot which got my mind twisted in the wrong direction maybe :slight_smile: The use cases that I see right now are: For instrumentation, it is nice to use decorators because they allow you to turn it on or off with the addition/deletion of a single lin…

I think it was the :trace module could allow you to hook functions, so you could define things to instrument based on module name and function name from the config or so?

Also found a way to do it with @ but downside there is that it breaks “regular” module attributes..

[image] arjan: Also found a way to do it with @ but downside there is that it breaks “regular” module attributes.. How so?

Because I do import Kernel, except: [@: 1] and from my own @ macro I cant seem to call the Kernel.@ macro

Very nice ! just sent you a couple of PR for your new project. :slight_smile:

I will second @benwilson512 here - I’m not sure decorator pattern really fits in Elixir. As to instrumentation - we have the awesome tracing abilities that allow us to introspect function calls without adding any line of code - even in production. There are native things in :dbg and :trace, but I …

Just discovered your decorator library as I was searching for exactly this behaviour. Wrapping method calls with timing traces. Perfect solution for me; thanks for making it available.

This may be too late but you really really really shouldn’t copy Elixir’s private source. When you rely on Elixir internal details and then your code breaks when users of your code update their Elixir version, it gives a sense of instability to the ecosystem while we are working very hard to keep El…

Elixir Programming Language Forum

Nicest way to emulate function decorators?

Questions & Help Questions

arjan October 20, 2016, 9:47pm 21

Fixed!