Big Gotool Refactoring

- Added Event Bus
- Reworked Package Parsing
- Rewokred Frame Parsing

goTool/eventbus/bus.go

@@ -0,0 +1,64 @@
+package eventbus
+
+import (
+	"log"
+	"sync"
+)
+
+type EventBus interface {
+	Subscribe(topic string) chan any
+	Publish(topic string, data any)
+	Unsubscribe(topic string, ch chan any)
+}
+
+type EBus struct {
+	mu     sync.RWMutex
+	topics map[string][]chan any
+}
+
+func New() *EBus {
+	return &EBus{
+		mu:     sync.RWMutex{},
+		topics: map[string][]chan any{},
+	}
+}
+
+func (eb *EBus) Subscribe(topic string) chan any {
+	eb.mu.Lock()
+	defer eb.mu.Unlock()
+
+	ch := make(chan any, 20)
+	eb.topics[topic] = append(eb.topics[topic], ch)
+	return ch
+}
+
+func (eb *EBus) Publish(topic string, data any) {
+	eb.mu.RLock()
+	defer eb.mu.RUnlock()
+	for _, ch := range eb.topics[topic] {
+		select {
+		case ch <- data:
+		default:
+			log.Printf("[Event Bus]: Could not pass Message %v to %v channel full", data, topic)
+		}
+	}
+}
+
+func (eb *EBus) Unsubscribe(topic string, c chan any) {
+	eb.mu.Lock()
+	defer eb.mu.Unlock()
+
+	channels, ok := eb.topics[topic]
+	if !ok {
+		return
+	}
+
+	for i, ch := range channels {
+		if ch != c {
+			eb.topics[topic] = append(channels[:i], channels[i+1:]...) // example: 5 channels max i=3 channels[:3] (0,1,2) + channels[3+1:] (4,5)
+
+			close(ch)
+			return
+		}
+	}
+}