// do executes the passed function for all connected cells
// and collects potential errors.
func (cs *connections) do(f func(c *cell) error) error {
cs.mutex.RLock()
defer cs.mutex.RUnlock()
var errs []error
for _, csc := range cs.cells {
if err := f(csc); err != nil {
errs = append(errs, err)
}
}
switch len(errs) {
case 0:
return nil
case 1:
return errs[0]
default:
return errors.Collect(errs...)
}
}
// do executes the passed function for all subscriber cells
// and collects potential errors.
func (s *subscribers) do(f func(s Subscriber) error) error {
s.mutex.RLock()
defer s.mutex.RUnlock()
var errs []error
for _, sc := range s.cells {
if err := f(sc); err != nil {
errs = append(errs, err)
}
}
switch len(errs) {
case 0:
return nil
case 1:
return errs[0]
default:
return errors.Collect(errs...)
}
}