Add message queue nats-streaming example (#1472)

examples/message-queue/nats-streaming/mqtrigger/main.go

@@ -0,0 +1,38 @@
+package main
+
+import (
+	"fmt"
+	nats "github.com/nats-io/go-nats-streaming"
+	uuid "github.com/satori/go.uuid"
+	"log"
+	"net/http"
+)
+
+const (
+	authToken = "defaultFissionAuthToken"
+	host      = "nats-streaming.fission"
+	clusterID = "fissionMQTrigger"
+	topic     = "foobar"
+)
+
+func Handler(w http.ResponseWriter, r *http.Request) {
+	addr := fmt.Sprintf("nats://%v@%v:4222", authToken, host)
+	nc, err := nats.Connect(clusterID, uuid.NewV4().String(), nats.NatsURL(addr))
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	log.Printf("Publishing message to topic '%v'\n", topic)
+
+	err = nc.Publish(topic, []byte("dummy"))
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		w.Write([]byte(err.Error()))
+		log.Printf("error sending message to topic: %v", err.Error())
+		return
+	}
+	nc.Close()
+
+	w.WriteHeader(http.StatusOK)
+	w.Write([]byte("Publish Success"))
+}