[Haskell-cafe] direct-fastcgi and logging

[Erik Hesselink]

FastCGI seems to be just a ReaderT over IO, so you can just use liftIO
to perform arbitrary IO, like writing to a file. If you want something
more full-featured, you could use something like hslogger.

Regards,

Erik

On Thu, Jun 26, 2014 at 9:19 AM, Denis Shevchenko
<haskell at dshevchenko.biz> wrote:
> Hi all!
>
> I write a FastCGI-server based on excellent package 'direct-fastcgi' (http://hackage.haskell.org/package/direct-fastcgi). It works perfectly, but I want to inject a logging facility into a handler of requests. For example:
>
>     import Control.Concurrent (forkIO)
>     import Network.FastCGI
>
>     main :: IO ()
>     main = acceptLoop forkIO handleRequest
>
>     handleRequest :: FastCGI ()
>     handleRequest = do
>         -- >>> In this place I want to log a message <<<
>         setResponseStatus 400
>         setResponseHeader HttpContentType "application/json"
>         fPutStr "{ "my": "problem_description" }"
>
> Yes, I know about this function in 'Network.FastCGI':
>
>     fLog :: MonadFastCGI m => String -> m ()
>
> but it "logs a message using the web server's logging facility", and I want to log into _my_own_ file. So which solution I can use here? I'd be very grateful for any help.
>
> ----------
> Sincerely, Denis Shevchenko
> haskell at dshevchenko.biz
>
>
>
>
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