NewFromConfig constructs a Router using the configuration specified as yaml in `filename`.

NewFromConfigBytes constructs a Router using the configuration specified as bytes typically read from a binary file.

NewFromRoutes constructs a RuleRouter using the provided map of route names to Rules.

Rule is a log routing rule.

RuleRouter is an object that can route log lines according to `rules`.

Router is an an interface for an object that can route log lines.

RuleMatchers describes which log lines a router rule applies to.

RuleOutput describes what to do if a log line matches a rule.