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8938 :: Catch exceptions without crashing app

• Cnerd (orginal) [2022-02-21T23:56:53+01:00] view original

  Jester has a feature in which it catches exceptions of code without crashing the web application. How is this feature implemented. I have used the usual try and except for the proc and although it caught the exception the program still crashes.

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• PMunch (orginal) [2022-02-21T23:59:37+01:00] view original

  That shouldn't happen, is your except handler somehow throwing the same (or a different) error? A code example would help us understand what is going wrong.

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• Cnerd (orginal) [2022-02-22T00:09:26+01:00] view original

  I wrapped the procedure in a template

  template safeRunning(action : untyped) =
      
      try:
        
        action
      except Exception as e:
        
        error(e.msg)
  Run

  then i called it here

  safeRunning:
            
            bot()
  Run

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• huantian (orginal) [2022-02-22T00:12:49+01:00] view original

  I'd assume the problem here is that if the entire process of whatever application is run in bot(), then if it raises an exception, it would "end" the bot proc to raise it.

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• PMunch (orginal) [2022-02-22T00:15:14+01:00] view original

  When I said code sample I meant something more like a minimal reproduction of the code. Something that we could actually run and test.

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• Cnerd (orginal) [2022-02-22T00:23:32+01:00] view original

  That is the main problem

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• Cnerd (orginal) [2022-02-22T00:26:42+01:00] view original

  I really can't find any part of the code that would be minimal enough to be tested. But i can give a example of an error i got which crashed the app although i have fixed it now. The was a value error which occured when i used parseFloat on a string(runtime error of course)

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• ynfle (orginal) [2022-02-22T08:23:19+01:00] view original

  error(e.msg) crashes the program.

  If you didn't what to exit, you can just echo e.msg

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• Cnerd (orginal) [2022-02-22T12:00:26+01:00] view original

  Ok i'll try that. thanks

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