Include more patterns and a logo

publish_subscribe.go

@@ -0,0 +1,62 @@
+package main
+
+import (
+	"errors"
+	"time"
+)
+
+var (
+	ErrTopicClosed = errors.New("Topic has been closed")
+)
+
+// Message
+type Message string
+
+// Topic
+type Topic struct {
+	Subscribers    []Authentication
+	MessageHistory []struct {
+		Author    string
+		Message   Message
+		Timestamp time.Time
+	}
+}
+
+// Subscribe
+func (t *Topic) Subscribe(Authentication) (Subscription, error) {
+	// Implementation
+}
+
+// Unsubscribe
+func (t *Topic) Unsubscribe(Subscription) error {
+	// Implementation
+}
+
+// Delete
+func (t *Topic) Delete() error {
+	// Implementation
+}
+
+type Subscription struct {
+	ch chan<- Message
+
+	Inbox chan Message
+}
+
+// Publish
+func (s *Subscription) Publish(msg Message) error {
+	if _, ok := ch; !ok {
+		return ErrTopicClosed
+	}
+
+	ch <- msg
+
+	return nil
+}
+
+// Authentication
+type Authentication struct {
+}
+
+func main() {
+}