func TestRegisterServiceInstance(t *testing.T) {
rId := "test router"
r, err := router.New(rId, ":14817", "")
if err != nil {
t.Fatal(err)
}
err = r.Start()
if err != nil {
t.Fatal("router start:", err)
}
defer func() {
r.Stop()
time.Sleep(time.Millisecond * 50)
}()
ins, err := instance.NewInstance("test instance", "test service", ":8888")
if err != nil {
t.Fatal(err)
}
cAddr := "127.0.0.1:14818"
c, err := New(cAddr)
if err != nil {
t.Fatal(err)
}
err = c.RegisterServiceInstance(ins)
if err != nil {
t.Fatal(err)
}
err = c.RegisterServiceInstance(ins)
assert.NotNil(t, err)
}
func TestCRouter(t *testing.T) {
rId := "test cRouter"
r, _ := router.New(rId, ":14817", "")
err := r.Start()
if err != nil {
t.Fatal("router start:", err)
}
defer r.Stop()
cr, err := NewCRouter(rId, ":14817")
if err != nil {
t.Fatal(err)
}
expectedReply, _ := genRandomBytesSlice(4096)
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Write(expectedReply)
}))
defer ts.Close()
sName := "test service"
localAddr := "127.0.0.1:8080"
remoteAddr := ts.Listener.Addr().String()
mapTo, err := instance.NewInstance("test instance", sName, remoteAddr)
if err != nil {
t.Fatal(err)
}
// setting up service
err = cr.AddService(sName, localAddr, router.NewRandomSelectPolicy())
if err != nil {
t.Fatal(err)
}
err = cr.AddServiceInstance(sName, mapTo)
if err != nil {
t.Fatal(err)
}
// testing service routing
resp, err := http.Get("http://" + localAddr + "/")
if err != nil {
t.Fatal(err)
}
reply, err := ioutil.ReadAll(resp.Body)
resp.Body.Close()
if err != nil {
t.Fatal(err)
}
assert.Equal(t, reply, expectedReply)
err = r.RemoveService(sName)
if err != nil {
t.Fatal(err)
}
}
func plotRouter() error {
if len(os.Args) < 5 {
return fmt.Errorf("Usage: demo r <cAddr> <port> <id>")
}
addr, err := getInterfaceAddr()
if err != nil {
return err
}
cAddr := os.Args[2]
port := os.Args[3]
rAddr := addr + port
id := os.Args[4]
if id != "rand" && id != "rr" {
return fmt.Errorf("for the sake of this demo, only ids of 'rand' and 'rr' are supported: %v", id)
}
// start router
r, err := router.New(id, rAddr, cAddr)
if err != nil {
return err
}
err = r.Start()
if err != nil {
return err
}
err = r.RegisterOnCtler()
return err
}
func TestRegisterRouter(t *testing.T) {
rId := "test router"
r, err := router.New(rId, ":14817", "")
if err != nil {
t.Fatal(err)
}
err = r.Start()
if err != nil {
t.Fatal("router start:", err)
}
defer func() {
r.Stop()
time.Sleep(time.Millisecond * 50)
}()
cr, err := NewCRouter(rId, ":14817")
if err != nil {
t.Fatal(err)
}
cAddr := "127.0.0.1:14818"
c, err := New(cAddr)
if err != nil {
t.Fatal(err)
}
assert.Empty(t, c.Routers)
err = c.RegisterRouter(cr)
if err != nil {
t.Fatal(err)
}
assert.Equal(t, len(c.Routers), 1)
assert.Equal(t, c.Routers["test router"], cr)
err = c.RegisterRouter(cr)
assert.NotNil(t, err)
}
func TestRPC(t *testing.T) {
r, err := router.New("id", ":14817", "")
if err != nil {
t.Fatal(err)
}
err = r.Start()
if err != nil {
t.Fatal("router start:", err)
}
defer func() {
r.Stop()
time.Sleep(time.Millisecond * 50)
}()
cAddr := "127.0.0.1:14818"
c, err := New(cAddr)
if err != nil {
t.Fatal(err)
}
err = c.Start()
if err != nil {
t.Fatal(err)
}
defer c.Stop()
client, err := rpc.Dial("tcp", cAddr)
if err != nil {
t.Fatal("dialing:", err)
}
regRouterArgs := &RegRouterArgs{
Id: "test router",
Addr: ":14817",
}
assert.Empty(t, c.Routers)
err = client.Call("ControllerRPC.RegisterRouter", regRouterArgs, nil)
if err != nil {
t.Fatal(err)
}
assert.Equal(t, len(c.Routers), 1)
assert.NotNil(t, c.Routers["test router"])
mapTo, err := instance.NewInstance("test instance", "test service", ":8888")
if err != nil {
t.Fatal(err)
}
regInstanceArgs := &RegInstanceArgs{
Instance: mapTo,
}
assert.Empty(t, c.ServiceInstances)
err = client.Call("ControllerRPC.RegisterServiceInstance", regInstanceArgs, nil)
if err != nil {
t.Fatal(err)
}
assert.Equal(t, len(c.ServiceInstances), 1)
assert.NotNil(t, c.ServiceInstances["test service"])
assert.Equal(t, c.ServiceInstances["test service"][0], mapTo)
}
func testLBFunction(t *testing.T, option int) {
rName := "test router"
sName := "test service"
expectedReply := []byte("hello, world")
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Write(expectedReply)
}))
defer ts.Close()
remoteAddr := ts.Listener.Addr().String()
mapTo, err := instance.NewInstance("test instance", sName, remoteAddr)
if err != nil {
t.Fatal(err)
}
cAddr := "127.0.0.1:14818"
rAddr := "127.0.0.1:14817"
r, err := router.New(rName, rAddr, cAddr)
if err != nil {
t.Fatal(err)
}
r.Start()
defer r.Stop()
c, err := controller.New(cAddr)
if err != nil {
t.Fatal(err)
}
c.Start()
defer c.Stop()
cr, err := controller.NewCRouter(rName, rAddr)
if err != nil {
t.Fatal(err)
}
lb := NewLoadBalancer(c)
switch option {
case 0:
c.AddListener(controller.AddRouterEventType, lb.AddRouterListener)
instances := make([]*instance.Instance, 0)
c.ServiceInstances[sName] = append(instances, mapTo)
c.RegisterRouter(cr)
case 1:
c.AddListener(controller.AddInstanceEventType, lb.AddInstanceListener)
c.Routers[rName] = cr
c.RegisterServiceInstance(mapTo)
default:
t.Fatal("Unknown option")
}
// http test
resp, err := http.Get("http://127.0.0.1" + ServicePortMap[sName] + "/")
if err != nil {
t.Fatal(err)
}
reply, err := ioutil.ReadAll(resp.Body)
resp.Body.Close()
if err != nil {
t.Fatal(err)
}
assert.Equal(t, reply, expectedReply)
c.AddListener(controller.FailureInstanceEventType, lb.FailureInstanceListener)
err = r.ReportFailure(mapTo)
assert.Nil(t, err)
}