hooks.go (1101B)
1 package logrus 2 3 // A hook to be fired when logging on the logging levels returned from 4 // `Levels()` on your implementation of the interface. Note that this is not 5 // fired in a goroutine or a channel with workers, you should handle such 6 // functionality yourself if your call is non-blocking and you don't wish for 7 // the logging calls for levels returned from `Levels()` to block. 8 type Hook interface { 9 Levels() []Level 10 Fire(*Entry) error 11 } 12 13 // Internal type for storing the hooks on a logger instance. 14 type LevelHooks map[Level][]Hook 15 16 // Add a hook to an instance of logger. This is called with 17 // `log.Hooks.Add(new(MyHook))` where `MyHook` implements the `Hook` interface. 18 func (hooks LevelHooks) Add(hook Hook) { 19 for _, level := range hook.Levels() { 20 hooks[level] = append(hooks[level], hook) 21 } 22 } 23 24 // Fire all the hooks for the passed level. Used by `entry.log` to fire 25 // appropriate hooks for a log entry. 26 func (hooks LevelHooks) Fire(level Level, entry *Entry) error { 27 for _, hook := range hooks[level] { 28 if err := hook.Fire(entry); err != nil { 29 return err 30 } 31 } 32 33 return nil 34 }