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LFE HTTP Server Abstraction and Web Application Middleware Infrastructure

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lmug src lmug-mw-log-request.lfe
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src/lmug-mw-log-request.lfe 

(defmodule lmug-mw-log-request

  (doc "Middlware for logging the request and some of the response.")

  (behaviour lmug-middleware)

  (export

   (wrap 1) (wrap 2)))



(defun wrap (handler)

  "The same as #'wrap/2 but with an empty map for options."

  (wrap handler #m()))



(defun wrap

  "Middleware that logs an HTTP request at the given log level."

  ((handler `#m(log-level ,log-level))

   (lambda (req)

     (let* ((user-agent (maps:get #"user-agent" req #""))

           (referrer (maps:get #"referrer" req (maps:get #"referer" req #"")))

           (resp (funcall handler req))

           (status (mref resp 'status)))

       (lmug-log:request req user-agent referrer status log-level)))))