github.com/askeladdk/slog (go): Package slog implements structured logging for lazy gophers.  Like the standard logger, slog is configured via flags. It uses all the standard flags and introduces two new ones, Lcolor and Lparsefields.  Flag Lcolor colorizes the output if the output writer is detected to be a tty.  Flag Lparsefields parses the log message (including prefix if log.Lmsgprefix is set) for key-value pairs and stores them as separate fields in the JSON object. A key-value pair is any fragment of text of the form key=value or key="another value". The key cannot contain spaces and the equals sign cannot be surrounded by spaces. The value can only contain spaces if it is quoted. Slog does not check for duplicate field names.  The standard logger produces non-standard timestamps. Slog converts the timestamps to RFC3339 format if the flags log.Ldate, log.Ltime and log.LUTC are all set and stores it in the time field.  The prefix, if any, is parsed differently depending on whether log.Lmsgprefix is set. If it is not, then the prefix is trimmed of spaces and punctuation marks and stored in the prfx field. If it is, then it is considered part of the log message. The log message is stored in the mesg field.  If flags log.Llongfile or log.Lshortfile are set, slog parses the file name and line number in two separate fields named fnam and flno.
Keywords: go|golang|logger|logging|logging-library|structured-logging