Use the string builder processor to add a new attribute (without spaces or special characters) to an event with the result of the provided template. This enables aggregation of different attributes or raw strings into a single attribute.

The template is defined by both raw text and blocks with the syntax %{attribute_path}.

Notes:

• This processor only accepts attributes with values or an array of values in the block.
• If an attribute cannot be used (object or array of object), it is replaced by an empty string or the entire operation is skipped depending on your selection.
• If a target attribute already exists, it is overwritten by the result of the template.
• Results of a template cannot exceed 256 characters.

Example String Builder