package blog4go
// Hook Interface determine types of functions should be declared and
// implemented when user offers user defined function call before every
// logging action end.
// users may use this hook as a callback function when something happen.
// Fire function received two parameters.
// level is the level associate with that logging action.
// message is the formatted string already written.
type Hook interface {
Fire(level LevelType, args ...interface{})
}