[TYPO3-core] RFC #12093: Improve the error and exception handling

[Rupert Germann]

hi,

find a new version of the extension "error" attached which now contains 
an example how to extend and customize the errorhandling.

greets
rupert



Rupert Germann schrieb:
> hi,
> 
> after having the improved error and exception handling running for a 
> while, I found some things that are still quite unflexible until now.
> 
> Problems:
> 
> 1. if devIPmask matches the users IP the exceptionhandler is set to the 
> string 't3lib_error_DebugExceptionHandler' (hardcoded). this makes it 
> impossible to register your own exceptionhandler class.
> 
> 2. the string 't3lib_error_DebugExceptionHandler' switches also the 
> errorhandler to debug-mode where it displays errors as flashmessages in 
> the BE.
> 
> 3. Whether the error and exception handling writes to devlog is 
> configured with [SYS][enable_DLOG]. If enable_DLOG is active the devlog 
> is filled with all devlog messages from the core, which might be not the 
> wanted behaviuor.
> 
> 
> 
> Solutions:
> 
> 1. introduce 2 new conf vars called
> $TYPO3_CONF_VARS['SYS']['debugExceptionHandler']
> $TYPO3_CONF_VARS['SYS']['productionExceptionHandler']
> 
> those vars are set to the build-in exceptionhandlers by default, but 
> both can be overridden by user defined classes. The values of devIPmask 
> and displayErrors are used to decide which of these 2 classes will be 
> registered as exceptionhandler.
> 
> 2. use the configured debugExceptionHandler to decide whether the 
> errorhandler is in debug-mode or not
> 
> 3. introduce 2 new conf vars called
> $TYPO3_CONF_VARS['SYS']['enable_errorDLOG']
> $TYPO3_CONF_VARS['SYS']['enable_exceptionDLOG']
> 
> as their names say, they are used to write either errors or exceptions 
> or both to the devlog
> 
> 
> I uploaded an updated documentation to
> http://wiki.typo3.org/index.php/File:Error_and_exception_handling.odt
> 
> which now even contains an example how to extend the built-in error and 
> exception handling with an own class.
> 
> greets
> rupert
>