Logging

A pool writes structured JSON logs. logConfig sets the destination and level. defaultLogConfig writes Info and higher levels to stdout.

Available destinations are stdout, stderr, a fast-logger LoggerSet, and a custom callback. The callback receives the level, message, and structured context as [Pair]. Use it to send Arbiter logs to an application logging system. silentLogConfig disables logging.

Arbiter adds job context to handler logs and pool logs.

See the Arbiter.Worker.Logger haddocks for LogConfig and every destination.