How to use Invoke method of grpcext Package

Best K6 code snippet using grpcext.Invoke

client.go

Source:client.go

...104		return false, fmt.Errorf("can't convert method info: %w", err)105	}106	return true, err107}108// Invoke creates and calls a unary RPC by fully qualified method name109func (c *Client) Invoke(110	method string,111	req goja.Value,112	params map[string]interface{},113) (*grpcext.Response, error) {114	state := c.vu.State()115	if state == nil {116		return nil, common.NewInitContextError("invoking RPC methods in the init context is not supported")117	}118	if c.conn == nil {119		return nil, errors.New("no gRPC connection, you must call connect first")120	}121	if method == "" {122		return nil, errors.New("method to invoke cannot be empty")123	}124	if method[0] != '/' {125		method = "/" + method126	}127	methodDesc := c.mds[method]128	if methodDesc == nil {129		return nil, fmt.Errorf("method %q not found in file descriptors", method)130	}131	p, err := c.parseParams(params)132	if err != nil {133		return nil, err134	}135	b, err := req.ToObject(c.vu.Runtime()).MarshalJSON()136	if err != nil {137		return nil, fmt.Errorf("unable to serialise request object: %w", err)138	}139	md := metadata.New(nil)140	for param, strval := range p.Metadata {141		md.Append(param, strval)142	}143	ctx, cancel := context.WithTimeout(c.vu.Context(), p.Timeout)144	defer cancel()145	tags := state.CloneTags()146	for k, v := range p.Tags {147		tags[k] = v148	}149	if state.Options.SystemTags.Has(metrics.TagURL) {150		tags["url"] = fmt.Sprintf("%s%s", c.addr, method)151	}152	parts := strings.Split(method[1:], "/")153	if state.Options.SystemTags.Has(metrics.TagService) {154		tags["service"] = parts[0]155	}156	if state.Options.SystemTags.Has(metrics.TagMethod) {157		tags["method"] = parts[1]158	}159	// Only set the name system tag if the user didn't explicitly set it beforehand160	if _, ok := tags["name"]; !ok && state.Options.SystemTags.Has(metrics.TagName) {161		tags["name"] = method162	}163	reqmsg := grpcext.Request{164		MethodDescriptor: methodDesc,165		Message:          b,166		Tags:             tags,167	}168	return c.conn.Invoke(ctx, method, md, reqmsg)169}170// Close will close the client gRPC connection171func (c *Client) Close() error {172	if c.conn == nil {173		return nil174	}175	err := c.conn.Close()176	c.conn = nil177	return err178}179// MethodInfo holds information on any parsed method descriptors that can be used by the goja VM180type MethodInfo struct {181	Package         string182	Service         string...

chat.go

Source:chat.go

...67			return nil, err68		}69		req.Message = b70	}71	return conn.Invoke(ctx, method, nil, req)72}73func (mi *ModuleInstance) methodDescriptor(ctx context.Context, c *grpcext.Conn, method string) (protoreflect.MethodDescriptor, error) {74	rc, err := c.ReflectionClient()75	if err != nil {76		return nil, err77	}78	fdset, err := rc.Reflect(ctx)79	if err != nil {80		return nil, err81	}82	files, err := protodesc.NewFiles(fdset)83	if err != nil {84		return nil, err85	}...

Invoke

Using AI Code Generation

1import (2func main() {3	conn, err := grpc.Dial("localhost:50051", grpc.WithInsecure())4	if err != nil {5		grpclog.Fatalf("fail to dial: %v", err)6	}7	defer conn.Close()8	client := test.NewTestClient(conn)9	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)10	defer cancel()11	req := &empty.Empty{}12	resp, err := client.Invoke(ctx, req)13	if err != nil {14		grpclog.Fatalf("fail to dial: %v", err)15	}16	fmt.Println(resp)17}18import (19func main() {20	conn, err := grpc.Dial("localhost:50051", grpc.WithInsecure())21	if err != nil {22		grpclog.Fatalf("fail to dial: %v", err)23	}24	defer conn.Close()25	client := test.NewTestClient(conn)26	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)27	defer cancel()28	req := &empty.Empty{}29	resp, err := client.Invoke(ctx, req)30	if err != nil {31		grpclog.Fatalf("fail to dial: %v", err)32	}33	fmt.Println(resp)34}35import (

Invoke

Using AI Code Generation

1import (2func main() {3	ctx := context.Background()4	ctx, cancel := context.WithCancel(ctx)5	defer cancel()6	conn, err := grpc.DialContext(ctx, "localhost:8080", grpc.WithInsecure())7	if err != nil {8		grpclog.Fatalf("Failed to dial server: %v", err)9	}10	defer conn.Close()11	req := &examplepb.EchoRequest{12	}13	md := metadata.Pairs("x-custom-header", "custom-value")14	ctx = metadata.NewOutgoingContext(ctx, md)15	err = grpcext.Invoke(ctx, "/examplepb.EchoService/Echo", req, resp, conn, utilities.NewDefaultHandler(), grpc.CallContentSubtype("proto"))16	if err != nil {17		grpclog.Fatalf("Failed to invoke: %v", err)18	}19	fmt.Println("Response:", resp)20}21import (22func main() {23	ctx := context.Background()24	ctx, cancel := context.WithCancel(ctx)25	defer cancel()26	conn, err := grpc.DialContext(ctx, "localhost:8080

Invoke

Using AI Code Generation

1import (2func main() {3    logger, _ := zap.NewDevelopment()4    dispatcher := yarpc.NewDispatcher(yarpc.Config{5        Outbounds: yarpc.Outbounds{6            "server": {7                Unary: grpc.NewTransport().NewSingleOutbound("

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