Alert logs message at an alert priority.

Alertf logs formated message at an alert priority.

Critical logs message at a critical priority.

Criticalf logs formated message at a critical priority.

Debug logs message at a debug priority.

Debugf logs formated message at a debug priority.

Emergency logs message at an emergency priority.

Emergencyf logs formated message at an emergency priority.

Error logs message at an error priority.

Errorf logs formated message at an error priority.

Info logs message at an info priority.

Infof logs formated message at an info priority.

Instance returns global log instance.

NewLog creates new logger.

NewLogFromConfig creates new logger.

Notice logs message at a notice priority.

Noticef logs formated message at a notice priority.

SetInstance sets global log instance.

Warning logs message at a warning priority.

Warningf logs formated message at a warning priority.

Alert: action must be taken immediately.

Critical: critical conditions.

Debug: debug messages.

Emergency: system is unusable.

Error: error conditions.

Informational: informational messages.

Notice: normal but significant condition.

Warning: warning conditions.

Config represents logger configuration.

Log writes log.