Concept plugin layout

mk2core/core.go

@@ -0,0 +1,57 @@
+package mk2core
+
+import (
+	"github.com/diebietse/invertergui/mk2driver"
+)
+
+type Core struct {
+	mk2driver.Mk2
+	plugins  map[*subscription]bool
+	register chan *subscription
+}
+
+func NewCore(m mk2driver.Mk2) *Core {
+	core := &Core{
+		Mk2:      m,
+		register: make(chan *subscription, 255),
+		plugins:  map[*subscription]bool{},
+	}
+	go core.run()
+	return core
+}
+
+func (c *Core) NewSubscription() mk2driver.Mk2 {
+	sub := &subscription{
+		send: make(chan *mk2driver.Mk2Info),
+	}
+	c.register <- sub
+	return sub
+}
+
+func (c *Core) run() {
+	for {
+		select {
+		case r := <-c.register:
+			c.plugins[r] = true
+		case e := <-c.C():
+			for plugin := range c.plugins {
+				select {
+				case plugin.send <- e:
+				default:
+				}
+			}
+		}
+	}
+}
+
+type subscription struct {
+	send chan *mk2driver.Mk2Info
+}
+
+func (s *subscription) C() chan *mk2driver.Mk2Info {
+	return s.send
+}
+
+func (s *subscription) Close() {
+	close(s.send)
+}