Clojurians Log v2

you can return xml by having your handler output something like

{:status 200
 :body ""
 :headers {"Content-Type" "application/xml"}}

the reitit/muuntaja magic only happens if your :body is a clojure map, muuntaja can then convert that to json, edn, transit, etc. depending on the Accept headers in the request

similarly, muuntaja won't decode an XML request body for you, you'll just get it as a string

I've done XML before for mastodon (webfinger) interop example of it being used with reitit https://github.com/valerauko/kitsune/blob/f052a5027d2207cbb357fcd74328d6c47e0a0631/api/src/kitsune/well_known/routes.clj muuntaja formatter: https://github.com/valerauko/kitsune/blob/f052a5027d2207cbb357fcd74328d6c47e0a0631/api/src/kitsune/format/xml.clj

@joel.kaasinen and @vale thanks both for your time! @joel.kaasinen i think in your solution the output would be an xml string but with "" around, so this would not interop with xml logic. @vale i think this is exactly the kind of pattern I was looking for thanks so much i'll dig into it ❤️

what's "the output"? if you give a string to :body, the contents of that string will be the contents of the HTTP response, without any formatting

Lying about the content-type is not a good practice though

I'm sorry I'm not following you

an example:

You had application/json for xml content

route definition:

(def routes
  ["/plain"
   ["/foo" {:get {:handler (fn [req]
                             {:status 200
                              :headers {"content-type" "application/xml"}
                              :body "<xml></xml>"})}}]])

% curl -v 
*   Trying 127.0.0.1:3000...
* Connected to localhost (127.0.0.1) port 3000 (#0)
> GET /plain/foo HTTP/1.1
> Host: localhost:3000
> User-Agent: curl/7.83.0
> Accept: */*
>
* Mark bundle as not supporting multiuse
< HTTP/1.1 200 OK
< Date: Wed, 05 Mar 2025 14:34:08 GMT
< Content-Type: application/xml
< Transfer-Encoding: chunked
< Server: Jetty(11.0.20)
<
* Connection #0 to host localhost left intact
<xml></xml>

oh yeah sorry, that was a very confusing typo from me facepalm 🤦

I meant application/xml, not sure what went into my fingers

anyway, my point is that if you have a single xml endpoint, you can just bypass the muuntaja & reitit stuff like this. if you have a lot of xml stuff then you probably want some middleware that converts between xml and clojure data, like in valerauko's example.

Great thank again to you both 🙂