gRPC with toek demo

cmd/agent/main.go

@@ -0,0 +1,46 @@
+package main
+
+import (
+	"context"
+	"log"
+
+	pb "github.com/EDDYCJY/go-grpc-example/proto"
+	"google.golang.org/grpc"
+)
+
+// Auth ..
+type Auth struct {
+	AppKey    string
+	AppSecret string
+}
+
+// GetRequestMetadata ..
+func (a *Auth) GetRequestMetadata(ctx context.Context, uri ...string) (map[string]string, error) {
+	return map[string]string{"app_key": a.AppKey, "app_secret": a.AppSecret}, nil
+}
+
+// RequireTransportSecurity ..
+func (a *Auth) RequireTransportSecurity() bool {
+	return false
+}
+
+func main() {
+	auth := Auth{
+		AppKey:    "naiba",
+		AppSecret: "nbsecret0",
+	}
+	conn, err := grpc.Dial(":5555", grpc.WithInsecure(), grpc.WithPerRPCCredentials(&auth))
+	if err != nil {
+		panic(err)
+	}
+	defer conn.Close()
+	client := pb.NewSearchServiceClient(conn)
+	resp, err := client.Search(context.Background(), &pb.SearchRequest{
+		Request: "gRPC",
+	})
+	if err != nil {
+		log.Fatalf("client.Search err: %v", err)
+	}
+
+	log.Printf("resp: %s", resp.GetResponse())
+}

cmd/dashboard/main.go

@@ -0,0 +1,78 @@
+package main
+
+import (
+	"context"
+	"net"
+
+	pb "github.com/EDDYCJY/go-grpc-example/proto"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/metadata"
+	"google.golang.org/grpc/status"
+)
+
+// SearchService ..
+type SearchService struct {
+	auth *Auth
+}
+
+// Search ..
+func (s *SearchService) Search(ctx context.Context, r *pb.SearchRequest) (*pb.SearchResponse, error) {
+	if err := s.auth.Check(ctx); err != nil {
+		return nil, err
+	}
+	return &pb.SearchResponse{Response: r.GetRequest() + " Token Server"}, nil
+}
+
+func main() {
+	server := grpc.NewServer()
+	pb.RegisterSearchServiceServer(server, &SearchService{})
+
+	lis, err := net.Listen("tcp", ":5555")
+	if err != nil {
+		panic(err)
+	}
+
+	server.Serve(lis)
+}
+
+// Auth ..
+type Auth struct {
+	appKey    string
+	appSecret string
+}
+
+// Check ..
+func (a *Auth) Check(ctx context.Context) error {
+	md, ok := metadata.FromIncomingContext(ctx)
+	if !ok {
+		return status.Errorf(codes.Unauthenticated, "metadata.FromIncomingContext err")
+	}
+
+	var (
+		appKey    string
+		appSecret string
+	)
+	if value, ok := md["app_key"]; ok {
+		appKey = value[0]
+	}
+	if value, ok := md["app_secret"]; ok {
+		appSecret = value[0]
+	}
+
+	if appKey != a.GetAppKey() || appSecret != a.GetAppSecret() {
+		return status.Errorf(codes.Unauthenticated, "invalid token")
+	}
+
+	return nil
+}
+
+// GetAppKey ..
+func (a *Auth) GetAppKey() string {
+	return "naiba"
+}
+
+// GetAppSecret ..
+func (a *Auth) GetAppSecret() string {
+	return "nbsecret"
+}