Preprocessor
From DKPLP Doc
A preprocessor is a local script or a plugin accessible on a web server to pass the log file through before starting to process it locally. This can sometimes be necessary when a target pattern spans multiple lines: the client parser can only match patterns that are all on a single line.
To install a groovy script, copy it into <DKPLP's work directory>/preprocessors/groovy/<scriptname>/ then refer to it within the configuration as groovy://<scriptname>. For example, if you had a ventrilo script, you would copy it into <DKPLP work directory>/preprocessors/groovy/ventrilo and you would configure it as groovy://ventrilo
