Logging severity.

Constants
DEBUG = 0
 

Low-level information, mostly for developers.

INFO = 1
 

Generic (useful) information about system operation.

WARN = 2
 

A warning.

ERROR = 3
 

A handleable error condition.

FATAL = 4
 

An unhandleable error that results in a program crash.

UNKNOWN = 5
 

An unknown message that should always be logged.