co-log-json (hackage): The library implements of a very simple approach to structured logging, that ca be used with the co-log ecosystem or on it's own see cheops-logger.  It provides:  Colog.Json — API for adding structured context to the log messages  Colog.Json.Action — efficient function for dumping logs in the following format.  By default it emits logs in the following format (pretty-printed for convenience):  The most interesting thing here is the field data that can be used by the user to add additional structured info to the message.
Keywords: library|mpl|system