[web-devel] Automatic error traces

[Greg Weber]

That's great. We should collaborate on this. I wrote the file-location
package and Michael Snoyman wrote monad-logger: both of these give file
location information. I also added command tracing to Shelly (which could
also benefit from this kind of thing) and recently released rollbar for
error notification and would like to have as much line info as possible for
that.


On Tue, Jul 16, 2013 at 5:45 AM, Alberto G. Corona <agocorona at gmail.com>wrote:

> It is important to have execution traces in case of error. specially in
> server applications that run 24/7 such are web applications
>
> Thanks to the wonderful package monadloc by Pepe Iborra, now MFlow can
> generate a complete execution trace in case of error.
>
> The control-monad-exception uses monadLoc to generate stack traces, but
> MFlow makes use of his backtracking mechanism to generate a complete
> execution trace.
>
> Here I explain what and how:
>
>
> http://haskell-web.blogspot.com.es/2013/07/automatic-error-trace-generation-in.html
>
> The MFlow version that implements this is in gitHub. Not in hackage yet.
>
> https://github.com/agocorona/MFlow
>
> I´m quite proud of it since it is one of the things closest to magic that
> I have done.
>
> Feedback?
>
> I do not want to keep MFlow as a single person development. I think that
> it has many unique and nice features not available in other languages and
> frameworks, and it can be raised to a serious exploitation level by
> the Haskell community. This will attract people working in Industrial Web
> development to Haskell thanks to the edge in expressiveness and safety
> necessary for creating industrial solutions that Haskell has over other
> languages.
>
> It uses most other Haskell web developments  blaze, wai, hamlet etc
> and there are many other things to come.
>
> monadLoc : http://hackage.haskell.org/package/monadloc
>
> --
> Alberto.
>
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>
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