The problem is that log messages are collected from many researcher-authored applications. Some of them are JSON, in which case I want to parse them and store t

The problem is that log messages are collected from many researcher-authored applications. Some of them are JSON, in which case I want to parse them and store the parsed JSON as you say. But some of them are not JSON, in which case I need to store the text. I was not able to do that with the log shipper. If I configured parsing, then the not-JSON messages would get dropped.