What do SOURCE_KEY and REGEX refer to during the transformation process?

During the transformation process in Splunk, SOURCE_KEY and REGEX are specifically related to how input data is processed and transformed. SOURCE_KEY refers to the field in the incoming data that you want to match or extract information from. This is the original field that holds the data value you wish to analyze or manipulate.

REGEX, which stands for regular expression, is a powerful pattern-matching syntax used to define search patterns. In this context, REGEX allows you to specify the rules for matching parts of the SOURCE_KEY data. It is used to extract or transform data based on matches found using the defined regular expression. Together, SOURCE_KEY and REGEX form a crucial part of the data transformation pipeline, helping in defining how the incoming data should be processed to deliver meaningful insights.

By utilizing these elements, data can be accurately mapped and transformed to fit the desired output for further analysis or reporting. This role is fundamental in ensuring that the raw input data is properly handled during the ingestion process.