dapr run --app-protocol grpc --app-port 5005 node app.js

apiVersion: apps/v1
kind: Deployment
metadata:
  name: myapp
  namespace: default
  labels:
    app: myapp
spec:
  replicas: 1
  selector:
    matchLabels:
      app: myapp
  template:
    metadata:
      labels:
        app: myapp
      annotations:
        dapr.io/enabled: "true"
        dapr.io/app-id: "myapp"
        dapr.io/app-protocol: "grpc"
        dapr.io/app-port: "5005"
...

package main

import (
    "context"
    "log"
    "os"

    dapr "github.com/dapr/go-sdk/client"
)

//仅为本示例
ctx := context.Background()
data := []byte("ping")

// 创建客户端
client, err := dapr.NewClient()
if err != nil {
  log.Panic(err)
}
defer client.Close()

// 保存key1的状态
err = client.SaveState(ctx, "statestore", "key1", data)
if err != nil {
  log.Panic(err)
}
log.Println("data saved")

package main

import (
    "context"
    "fmt"
    "log"
    "net"

    "github.com/golang/protobuf/ptypes/any"
    "github.com/golang/protobuf/ptypes/empty"

    commonv1pb "github.com/dapr/go-sdk/dapr/proto/common/v1"
    pb "github.com/dapr/go-sdk/dapr/proto/runtime/v1"
    "google.golang.org/grpc"
)

// server is our user app
type server struct {
     pb.UnimplementedAppCallbackServer
}

// EchoMethod is a simple demo method to invoke
func (s *server) EchoMethod() string {
    return "pong"
}

// This method gets invoked when a remote service has called the app through Dapr
// The payload carries a Method to identify the method, a set of metadata properties and an optional payload
func (s *server) OnInvoke(ctx context.Context, in *commonv1pb.InvokeRequest) (*commonv1pb.InvokeResponse, error) {
    var response string

    switch in.Method {
    case "EchoMethod":
        response = s.EchoMethod()
    }

    return &commonv1pb.InvokeResponse{
        ContentType: "text/plain; charset=UTF-8",
        Data:        &any.Any{Value: []byte(response)},
    }, nil
}

// Dapr will call this method to get the list of topics the app wants to subscribe to. In this example, we are telling Dapr
// To subscribe to a topic named TopicA
func (s *server) ListTopicSubscriptions(ctx context.Context, in *empty.Empty) (*pb.ListTopicSubscriptionsResponse, error) {
    return &pb.ListTopicSubscriptionsResponse{
        Subscriptions: []*pb.TopicSubscription{
            {Topic: "TopicA"},
        },
    }, nil
}

// Dapr will call this method to get the list of bindings the app will get invoked by. In this example, we are telling Dapr
// To invoke our app with a binding named storage
func (s *server) ListInputBindings(ctx context.Context, in *empty.Empty) (*pb.ListInputBindingsResponse, error) {
    return &pb.ListInputBindingsResponse{
        Bindings: []string{"storage"},
    }, nil
}

// This method gets invoked every time a new event is fired from a registerd binding. The message carries the binding name, a payload and optional metadata
func (s *server) OnBindingEvent(ctx context.Context, in *pb.BindingEventRequest) (*pb.BindingEventResponse, error) {
    fmt.Println("Invoked from binding")
    return &pb.BindingEventResponse{}, nil
}

// This method is fired whenever a message has been published to a topic that has been subscribed. Dapr sends published messages in a CloudEvents 0.3 envelope.
func (s *server) OnTopicEvent(ctx context.Context, in *pb.TopicEventRequest) (*pb.TopicEventResponse, error) {
    fmt.Println("Topic message arrived")
        return &pb.TopicEventResponse{}, nil
}

func main() {
    // create listener
    lis, err := net.Listen("tcp", ":50001")
    if err != nil {
        log.Fatalf("failed to listen: %v", err)
    }

    // create grpc server
    s := grpc.NewServer()
    pb.RegisterAppCallbackServer(s, &server{})

    fmt.Println("Client starting...")

    // 启动......
    if err := s.Serve(lis); err != nil {
        log.Fatalf("failed to serve: %v", err)
    }
}