How to pretty print with Timbre

[theronic]

Can I get Timbre to always pretty-print Clojure data structures, without modifying all my logging calls to Timbre?

[ptaoussanis]

Hi Petrus, should be doable; would recommend looking into Timbre's middleware support.

Cheers!

[theronic]

I never managed to get this going. Anyone have a middleware sample with pretty-printing Timbre?

[MrEbbinghaus]

@theronic
I use following as middleware.

(fn [data] 
  (update data :vargs (partial mapv #(if (string? %) 
                                         % 
                                         (with-out-str (pprint %))))))]

The if string? is there, because pprint would print strings with \".

You could use condp for some advanced formating

(fn [x] 
 (condp #(%1 %2) x
  string? (clojure.string/upper-case x)
  neg? (str "minus " (* -1 x))
  (with-out-str (pprint x))

[ghost]

Maybe include this example in the readme?

[MrEbbinghaus]

@urzds In this case it could be added as a middleware in the repo itself.

@ptaoussanis What do you think about this?