// FilterMail installs a counter mail filter in the context.
func FilterMail(c context.Context, defaultError error) (context.Context, FeatureBreaker) {
state := newState(defaultError)
return mail.AddFilters(c, func(ic context.Context, i mail.Interface) mail.Interface {
return &mailState{state, i}
}), state
}
// FilterMail installs a counter Mail filter in the context.
func FilterMail(c context.Context) (context.Context, *MailCounter) {
state := &MailCounter{}
return mail.AddFilters(c, func(ic context.Context, u mail.Interface) mail.Interface {
return &mailCounter{state, u}
}), state
}