Idiomatic way of implementing global error handler in http4k

Question

I tried to find an answer in project's documentation but couldn't find anything useful.

What is the best practice to implement a global error handler that captures all the exceptions and returns appropriate http status based on the exception type?

score 4 · Accepted Answer · answered Jul 27 '18 at 07:54

4

For this you should implement an http4k Filter.

The API docs have a list of all the current filters that are implemented: https://www.http4k.org/api/org.http4k.filter/

Specifically for this, you want to add a ServerFilters.CatchAll into your filter chain. If you click through you can see the implementation:

https://www.http4k.org/api/org.http4k.filter/-server-filters/-catch-all/

answered Jul 27 '18 at 07:54

David D

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Developers probably shouldn't use CatchAll out of the box, as it leaks stack traces into the response. You can now configure its error behaviour to log uncaught exceptions. – Duncan McGregor Apr 04 '22 at 08:10

Idiomatic way of implementing global error handler in http4k

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