| // A hook to be fired when logging on the logging levels returned from |
| // `Levels()` on your implementation of the interface. Note that this is not |
| // fired in a goroutine or a channel with workers, you should handle such |
| // functionality yourself if your call is non-blocking and you don't wish for |
| // the logging calls for levels returned from `Levels()` to block. |
| // Internal type for storing the hooks on a logger instance. |
| type LevelHooks map[Level][]Hook |
| // Add a hook to an instance of logger. This is called with |
| // `log.Hooks.Add(new(MyHook))` where `MyHook` implements the `Hook` interface. |
| func (hooks LevelHooks) Add(hook Hook) { |
| for _, level := range hook.Levels() { |
| hooks[level] = append(hooks[level], hook) |
| // Fire all the hooks for the passed level. Used by `entry.log` to fire |
| // appropriate hooks for a log entry. |
| func (hooks LevelHooks) Fire(level Level, entry *Entry) error { |
| for _, hook := range hooks[level] { |
| if err := hook.Fire(entry); err != nil { |