New is used to init service.

NewConfig is used to init config with default values.

NewDefault is used to initialize a simple Logger.

defines a set of log level.

defines a set of log level.

defines a set of log level.

defines a set of log level.

defines a set of log level.

BasicLogger simply implements Logger.

Config defines the config structure.

Level is the structure of log level.

Logger defines the basic log library implementation.