func TestBreaker(t *testing.T) {
// setup
r := mock.NewRegistry()
s := selector.NewSelector(selector.Registry(r))
c := client.NewClient(
// set the selector
client.Selector(s),
// add the breaker wrapper
client.Wrap(NewClientWrapper()),
)
req := c.NewJsonRequest("test.service", "Test.Method", map[string]string{
"foo": "bar",
})
var rsp map[string]interface{}
// Force to point of trip
for i := 0; i < (hystrix.DefaultVolumeThreshold * 2); i++ {
c.Call(context.TODO(), req, rsp)
}
err := c.Call(context.TODO(), req, rsp)
if err == nil {
t.Error("Expecting tripped breaker, got nil error")
}
if err.Error() != "hystrix: circuit open" {
t.Errorf("Expecting tripped breaker, got %v", err)
}
}
func main() {
cmd.Init()
r := router.NewRouter()
c := client.NewClient(client.Selector(r))
c = router.NewLabelWrapper(c)
// Create new request to service go.micro.srv.greeter, method Say.Hello
req := c.NewRequest("go.micro.srv.greeter", "Say.Hello", &hello.Request{
Name: "John",
})
rsp := &hello.Response{}
// Set arbitrary headers in context
ctx := metadata.NewContext(context.Background(), map[string]string{
router.LabelPrefix + "Greeter": "one",
})
// Call service
if err := c.Call(ctx, req, rsp); err != nil {
fmt.Println(err)
return
}
fmt.Println(rsp.Msg)
}
func TestGRPCClient(t *testing.T) {
l, err := net.Listen("tcp", ":0")
if err != nil {
t.Fatalf("failed to listen: %v", err)
}
defer l.Close()
s := grpc.NewServer()
pb.RegisterGreeterServer(s, &greeterServer{})
go s.Serve(l)
defer s.Stop()
parts := strings.Split(l.Addr().String(), ":")
port, _ := strconv.Atoi(parts[len(parts)-1])
addr := strings.Join(parts[:len(parts)-1], ":")
r := mock.NewRegistry()
r.Register(®istry.Service{
Name: "test",
Version: "test",
Nodes: []*registry.Node{
®istry.Node{
Id: "test-1",
Address: addr,
Port: port,
},
},
})
se := selector.NewSelector(
selector.Registry(r),
)
c := NewClient(
client.Registry(r),
client.Selector(se),
)
req := c.NewRequest("test", "/helloworld.Greeter/SayHello", &pb.HelloRequest{
Name: "John",
})
rsp := pb.HelloReply{}
err = c.Call(context.TODO(), req, &rsp)
if err != nil {
t.Fatal(err)
}
if rsp.Message != "Hello John" {
t.Fatalf("Got unexpected response %v", rsp.Message)
}
}
func main() {
cmd.Init()
client.DefaultClient = client.NewClient(
client.Selector(DCSelector()),
)
fmt.Println("\n--- Call example ---\n")
for i := 0; i < 10; i++ {
call(i)
}
}
func main() {
rabbitmq.DefaultExchange = "b2a"
rabbitmq.DefaultRabbitURL = "amqp://localhost:5672"
c := client.NewClient(
client.Selector(mercury.NewSelector()),
client.Transport(rabbitmq.NewTransport([]string{})),
client.Codec("application/x-protobuf", mcodec.NewCodec),
client.ContentType("application/x-protobuf"),
)
req := c.NewRequest("foo", "Say.Hello", &hello.Request{
Name: "John",
})
rsp := &hello.Response{}
if err := c.Call(context.Background(), req, rsp); err != nil {
fmt.Println(err)
}
fmt.Println(rsp)
}
func (c *cmd) Before(ctx *cli.Context) error {
// Due to logger issues with glog, we need to do this
os.Args = os.Args[:1]
flag.Set("logtostderr", fmt.Sprintf("%v", ctx.Bool("logtostderr")))
flag.Set("alsologtostderr", fmt.Sprintf("%v", ctx.Bool("alsologtostderr")))
flag.Set("stderrthreshold", ctx.String("stderrthreshold"))
flag.Set("log_backtrace_at", ctx.String("log_backtrace_at"))
flag.Set("log_dir", ctx.String("log_dir"))
flag.Set("vmodule", ctx.String("vmodule"))
flag.Set("v", ctx.String("v"))
flag.Parse()
// If flags are set then use them otherwise do nothing
var serverOpts []server.Option
var clientOpts []client.Option
// Set the broker
if len(ctx.String("broker")) > 0 {
if b, ok := c.opts.Brokers[ctx.String("broker")]; ok {
n := b(strings.Split(ctx.String("broker_address"), ","))
*c.opts.Broker = n
} else {
return fmt.Errorf("Broker %s not found", ctx.String("broker"))
}
serverOpts = append(serverOpts, server.Broker(*c.opts.Broker))
clientOpts = append(clientOpts, client.Broker(*c.opts.Broker))
}
// Set the registry
if len(ctx.String("registry")) > 0 {
if r, ok := c.opts.Registries[ctx.String("registry")]; ok {
n := r(strings.Split(ctx.String("registry_address"), ","))
*c.opts.Registry = n
} else {
return fmt.Errorf("Registry %s not found", ctx.String("registry"))
}
serverOpts = append(serverOpts, server.Registry(*c.opts.Registry))
clientOpts = append(clientOpts, client.Registry(*c.opts.Registry))
(*c.opts.Selector).Init(selector.Registry(*c.opts.Registry))
clientOpts = append(clientOpts, client.Selector(*c.opts.Selector))
(*c.opts.Broker).Init(broker.Registry(*c.opts.Registry))
}
// Set the selector
if len(ctx.String("selector")) > 0 {
if s, ok := c.opts.Selectors[ctx.String("selector")]; ok {
n := s(selector.Registry(*c.opts.Registry))
*c.opts.Selector = n
} else {
return fmt.Errorf("Selector %s not found", ctx.String("selector"))
}
// No server option here. Should there be?
clientOpts = append(clientOpts, client.Selector(*c.opts.Selector))
}
// Set the transport
if len(ctx.String("transport")) > 0 {
if t, ok := c.opts.Transports[ctx.String("transport")]; ok {
n := t(strings.Split(ctx.String("transport_address"), ","))
*c.opts.Transport = n
} else {
return fmt.Errorf("Transport %s not found", ctx.String("transport"))
}
serverOpts = append(serverOpts, server.Transport(*c.opts.Transport))
clientOpts = append(clientOpts, client.Transport(*c.opts.Transport))
}
// Parse the server options
metadata := make(map[string]string)
for _, d := range ctx.StringSlice("server_metadata") {
var key, val string
parts := strings.Split(d, "=")
key = parts[0]
if len(parts) > 1 {
val = strings.Join(parts[1:], "=")
}
metadata[key] = val
}
if len(metadata) > 0 {
serverOpts = append(serverOpts, server.Metadata(metadata))
}
if len(ctx.String("server_name")) > 0 {
serverOpts = append(serverOpts, server.Name(ctx.String("server_name")))
}
if len(ctx.String("server_version")) > 0 {
serverOpts = append(serverOpts, server.Version(ctx.String("server_version")))
}
if len(ctx.String("server_id")) > 0 {
serverOpts = append(serverOpts, server.Id(ctx.String("server_id")))
}
if len(ctx.String("server_address")) > 0 {
serverOpts = append(serverOpts, server.Address(ctx.String("server_address")))
}
if len(ctx.String("server_advertise")) > 0 {
serverOpts = append(serverOpts, server.Advertise(ctx.String("server_advertise")))
}
// We have some command line opts for the server.
// Lets set it up
if len(serverOpts) > 0 {
(*c.opts.Server).Init(serverOpts...)
}
// Use an init option?
if len(clientOpts) > 0 {
(*c.opts.Client).Init(clientOpts...)
}
return nil
}
func (c *cmd) Before(ctx *cli.Context) error {
// If flags are set then use them otherwise do nothing
var serverOpts []server.Option
var clientOpts []client.Option
// Set the broker
if name := ctx.String("broker"); len(name) > 0 || len(ctx.String("broker_address")) > 0 {
if len(name) == 0 {
name = defaultBroker
}
if b, ok := c.opts.Brokers[name]; ok {
n := b(broker.Addrs(strings.Split(ctx.String("broker_address"), ",")...))
*c.opts.Broker = n
} else {
return fmt.Errorf("Broker %s not found", name)
}
serverOpts = append(serverOpts, server.Broker(*c.opts.Broker))
clientOpts = append(clientOpts, client.Broker(*c.opts.Broker))
}
// Set the registry
if name := ctx.String("registry"); len(name) > 0 || len(ctx.String("registry_address")) > 0 {
if len(name) == 0 {
name = defaultRegistry
}
if r, ok := c.opts.Registries[name]; ok {
n := r(registry.Addrs(strings.Split(ctx.String("registry_address"), ",")...))
*c.opts.Registry = n
} else {
return fmt.Errorf("Registry %s not found", name)
}
serverOpts = append(serverOpts, server.Registry(*c.opts.Registry))
clientOpts = append(clientOpts, client.Registry(*c.opts.Registry))
(*c.opts.Selector).Init(selector.Registry(*c.opts.Registry))
clientOpts = append(clientOpts, client.Selector(*c.opts.Selector))
(*c.opts.Broker).Init(broker.Registry(*c.opts.Registry))
}
// Set the selector
if name := ctx.String("selector"); len(name) > 0 {
if s, ok := c.opts.Selectors[name]; ok {
n := s(selector.Registry(*c.opts.Registry))
*c.opts.Selector = n
} else {
return fmt.Errorf("Selector %s not found", name)
}
// No server option here. Should there be?
clientOpts = append(clientOpts, client.Selector(*c.opts.Selector))
}
// Set the transport
if name := ctx.String("transport"); len(name) > 0 || len(ctx.String("transport_address")) > 0 {
if len(name) == 0 {
name = defaultTransport
}
if t, ok := c.opts.Transports[name]; ok {
n := t(transport.Addrs(strings.Split(ctx.String("transport_address"), ",")...))
*c.opts.Transport = n
} else {
return fmt.Errorf("Transport %s not found", name)
}
serverOpts = append(serverOpts, server.Transport(*c.opts.Transport))
clientOpts = append(clientOpts, client.Transport(*c.opts.Transport))
}
// Parse the server options
metadata := make(map[string]string)
for _, d := range ctx.StringSlice("server_metadata") {
var key, val string
parts := strings.Split(d, "=")
key = parts[0]
if len(parts) > 1 {
val = strings.Join(parts[1:], "=")
}
metadata[key] = val
}
if len(metadata) > 0 {
serverOpts = append(serverOpts, server.Metadata(metadata))
}
if len(ctx.String("server_name")) > 0 {
serverOpts = append(serverOpts, server.Name(ctx.String("server_name")))
}
if len(ctx.String("server_version")) > 0 {
serverOpts = append(serverOpts, server.Version(ctx.String("server_version")))
}
if len(ctx.String("server_id")) > 0 {
serverOpts = append(serverOpts, server.Id(ctx.String("server_id")))
}
if len(ctx.String("server_address")) > 0 {
serverOpts = append(serverOpts, server.Address(ctx.String("server_address")))
}
if len(ctx.String("server_advertise")) > 0 {
serverOpts = append(serverOpts, server.Advertise(ctx.String("server_advertise")))
}
// client opts
if r := ctx.Int("client_retries"); r > 0 {
clientOpts = append(clientOpts, client.Retries(r))
}
if t := ctx.String("client_request_timeout"); len(t) > 0 {
d, err := time.ParseDuration(t)
if err != nil {
return fmt.Errorf("failed to parse client_request_timeout: %v", t)
}
clientOpts = append(clientOpts, client.RequestTimeout(d))
}
if r := ctx.Int("client_pool_size"); r > 0 {
clientOpts = append(clientOpts, client.PoolSize(r))
}
if t := ctx.String("client_pool_ttl"); len(t) > 0 {
d, err := time.ParseDuration(t)
if err != nil {
return fmt.Errorf("failed to parse client_pool_ttl: %v", t)
}
clientOpts = append(clientOpts, client.PoolTTL(d))
}
// We have some command line opts for the server.
// Lets set it up
if len(serverOpts) > 0 {
(*c.opts.Server).Init(serverOpts...)
}
// Use an init option?
if len(clientOpts) > 0 {
(*c.opts.Client).Init(clientOpts...)
}
return nil
}
func TestRPCHandler(t *testing.T) {
r := rmock.NewRegistry()
(*cmd.DefaultOptions().Client).Init(
client.Registry(r),
client.Selector(selector.NewSelector(selector.Registry(r))),
)
(*cmd.DefaultOptions().Server).Init(
server.Name("test"),
server.Registry(r),
)
(*cmd.DefaultOptions().Server).Handle(
(*cmd.DefaultOptions().Server).NewHandler(&TestHandler{t, metadata.Metadata{"Foo": "Bar"}}),
)
if err := server.Start(); err != nil {
t.Fatal(err)
}
if err := server.Register(); err != nil {
t.Fatal(err)
}
w := httptest.NewRecorder()
request := map[string]string{
"service": "test",
"method": "TestHandler.Exec",
"request": "{}",
}
rb, err := json.Marshal(request)
if err != nil {
t.Fatal(err)
}
b := bytes.NewBuffer(rb)
req, err := http.NewRequest("POST", "/rpc", b)
if err != nil {
t.Fatal(err)
}
req.Header.Set("Content-Type", "application/json")
req.Header.Set("Foo", "Bar")
RPC(w, req)
if err := server.Deregister(); err != nil {
t.Fatal(err)
}
if err := server.Stop(); err != nil {
t.Fatal(err)
}
if w.Code != 200 {
t.Fatalf("Expected 200 response got %d %s", w.Code, w.Body.String())
}
}