// PublishEvent publishes an event to all handlers capable of handling it.
func (b *EventBus) PublishEvent(event eh.Event) {
// Handle the event if there is a handler registered.
if handlers, ok := b.handlers[event.EventType()]; ok {
for handler := range handlers {
handler.HandleEvent(event)
}
}
// Notify all observers about the event.
b.notify(event)
}
func (b *EventBus) notify(event eh.Event) {
conn := b.pool.Get()
defer conn.Close()
if err := conn.Err(); err != nil {
log.Printf("error: event bus publish: %v\n", err)
}
// Marshal event data.
var data []byte
var err error
if data, err = bson.Marshal(event); err != nil {
log.Printf("error: event bus publish: %v\n", ErrCouldNotMarshalEvent)
}
// Publish all events on their own channel.
if _, err = conn.Do("PUBLISH", b.prefix+string(event.EventType()), data); err != nil {
log.Printf("error: event bus publish: %v\n", err)
}
}