Logger file

The JSON file logger is the one external logger in the tree.

How to read the tables

Sample is the value in the C sample file. In the port says whether the Rust source mentions the key as a string (read) or not (not found). It is a grep, not a proof: a key that is "read" may be read only in some modes, and a key that is "not found" is accepted and ignored with a warning, as the compatibility notes describe.

JSON file logger

File: janus.logger.jsonlog.jcfg in the configs folder. Sample: conf/janus.logger.jsonlog.jcfg.sample in the C repo.

This configures the JSON-based file logger. This is a very simple logger with no particular advantage over the existing, integrated, logging functionality Janus provides, and so it's configuration is quite basic as well: it's here mostly to provide a reference implementation for developers willing to provide additional, and more complex, external loggers.

general

Key	Sample	Meaning	In the port
enabled	false	By default the module is not enabled	read
json	"compact"	Since this logger simply writes each log line as a JSON object to a file, you can configure whether the JSON log lines should be indented (pretty), plain (no indentation) or compact (no indentation and no spaces)	read
filename	"/tmp/janus-log.json"	Filename to save to	read