nathanmarz/storm — pull request #395 by Frostman (2012-11-08 17:51:44+00:00)
Title: catch-errors middleware added

Display stack trace instead of plain white screen when exception happens in action method of UI.
It's very useful for me to see exception in browser. For example, I can understand when nimbus isn't available or topology with specified name isn't exists, etc.

Screenshot: http://f.slukjanov.name/storm/ui-errors-demo.png

P.S. we can write tons of handlers to write error message like "Nimbus isn't available", but I think that this information is easy parseable from stack traces.