Service type ClusterIP - Controller port forward through CLI (#431)

setting serviceType to ClusterIP as default for fission controller and corresponding changes in fission cli to be able to port-forward the controller pod.

fission/function.go

@@ -21,6 +21,7 @@ import (
 	"errors"
 	"fmt"
 	"io/ioutil"
+	"net"
 	"net/http"
 	"net/url"
 	"os"
@@ -602,10 +603,35 @@ func fnPods(c *cli.Context) error {
 }
 
 func fnTest(c *cli.Context) error {
+	//we can port-forward the router specifically for this method
 	fnName := c.String("name")
+	if len(fnName) == 0 {
+		fatal("Need function name to be specified with --name")
+	}
+
 	routerURL := os.Getenv("FISSION_ROUTER")
 	if len(routerURL) == 0 {
-		fatal("Need FISSION_ROUTER set to your fission router.")
+		localRouterPort, err := findFreePort()
+		if err != nil {
+			fatal(fmt.Sprintf("Error finding unused port for router :%s", err.Error()))
+		}
+
+		fissionNamespace := os.Getenv("FISSION_NAMESPACE")
+		go func() {
+			err := runportForward("router", localRouterPort, fissionNamespace)
+			if err != nil {
+				fatal(err.Error())
+			}
+		}()
+
+		for {
+			conn, _ := net.DialTimeout("tcp", net.JoinHostPort("", localRouterPort), time.Second)
+			if conn != nil {
+				conn.Close()
+				break
+			}
+		}
+		routerURL = "127.0.0.1:" + localRouterPort
 	}
 
 	url := fmt.Sprintf("http://%s/fission-function/%s", routerURL, fnName)
@@ -621,7 +647,7 @@ func fnTest(c *cli.Context) error {
 
 	body, err := ioutil.ReadAll(resp.Body)
 	checkErr(err, "read log response from pod")
-	fmt.Printf("Error calling function %v: %v %v", fnName, resp.StatusCode, string(body))
+	fmt.Printf("Error calling function %s: %d %s", fnName, resp.StatusCode, string(body))
 	defer resp.Body.Close()
 	err = printPodLogs(c)
 	if err != nil {