GetLogger returns an instance of Logger.

GetLoggerFromContextOrDefault returns a Logger instance from context, or a default instance if no Logger in the context.

NewContextWithLogger returns a new context with given logger level.

LoggerContextKey is the key of context for get/set Logger.

LevelLog is the wrapper of built-in log.Logger.

ContextAware is the interface for getting context.Context.

LoggerContext used to get and set context value.