Vendor new queue-worker version

Introduces 0.4.6 of queue-worker - see upstream repo for changes.

Signed-off-by: Alex Ellis (VMware) <alexellis2@gmail.com>

gateway/vendor/github.com/openfaas/nats-queue-worker/handler/handler.go

@@ -15,15 +15,26 @@ type NatsQueue struct {
 	nc stan.Conn
 }
 
+type NatsConfig interface {
+	GetClientID() string
+}
+
+type DefaultNatsConfig struct {
+}
+
+func (DefaultNatsConfig) GetClientID() string {
+	val, _ := os.Hostname()
+	return "faas-publisher-" + val
+}
+
 // CreateNatsQueue ready for asynchronous processing
-func CreateNatsQueue(address string, port int) (*NatsQueue, error) {
+func CreateNatsQueue(address string, port int, clientConfig NatsConfig) (*NatsQueue, error) {
 	queue1 := NatsQueue{}
 	var err error
 	natsURL := fmt.Sprintf("nats://%s:%d", address, port)
 	log.Printf("Opening connection to %s\n", natsURL)
 
-	val, _ := os.Hostname()
-	clientID := "faas-publisher-" + val
+	clientID := clientConfig.GetClientID()
 	clusterID := "faas-cluster"
 
 	nc, err := stan.Connect(clusterID, clientID, stan.NatsURL(natsURL))

gateway/vendor/github.com/openfaas/nats-queue-worker/handler/handler_test.go

@@ -0,0 +1,19 @@
+package handler
+
+import (
+	"os"
+	"strings"
+	"testing"
+)
+
+func Test_GetClientID_ContainsHostname(t *testing.T) {
+	c := DefaultNatsConfig{}
+
+	val := c.GetClientID()
+
+	hostname, _ := os.Hostname()
+	if !strings.HasSuffix(val, hostname) {
+		t.Errorf("GetClientID should contain hostname as suffix, got: %s", val)
+		t.Fail()
+	}
+}