Initial import.

receiver/receiver.go

@@ -0,0 +1,60 @@
+package receiver
+
+import (
+	"log"
+
+	"git.wntrmute.dev/kyle/sensenet/config"
+	"git.wntrmute.dev/kyle/sensenet/pubsub"
+	"git.wntrmute.dev/kyle/sensenet/topic"
+)
+
+const (
+	packetBuffer = 64
+	errBuffer    = 64
+)
+
+type Receiver struct {
+	packets chan *topic.Packet
+	errs    chan error
+}
+
+func receive(packets chan *topic.Packet, errs chan error, subscriber *pubsub.Subscriber) {
+	packet, err := subscriber.Receive()
+	if err != nil {
+		errs <- err
+		return
+	}
+
+	packets <- packet
+}
+
+func (rcvr *Receiver) Subscribe(addr string, publisher *config.Publisher) error {
+	subscriber, err := pubsub.NewSubscriber(addr, publisher.Name, publisher.Topics...)
+	if err != nil {
+		return err
+	}
+
+	go func() {
+		for {
+			receive(rcvr.packets, rcvr.errs, subscriber)
+		}
+	}()
+
+	return nil
+}
+
+func (rcvr *Receiver) LogErrors() {
+	for {
+		select {
+		case err := <-rcvr.errs:
+			log.Println(err)
+		}
+	}
+}
+
+func New() *Receiver {
+	return &Receiver{
+		packets: make(chan *topic.Packet, packetBuffer),
+		errs:    make(chan error, errBuffer),
+	}
+}