The triple protocol is 100% compatible with gRPC. This example demonstrates using dubbo-go to develop applications that interoperate with gRPC. You can view the complete example source code here.
The Triple protocol of Dubbo-go is compatible with the gRPC protocol. When creating the server, you can set protocol.WithTriple() to use the Triple protocol.
srv, err := server.NewServer(
server.WithServerProtocol(
protocol.WithPort(20000),
protocol.WithTriple(),
),
)
Source file path: dubbo-go-sample/rpc/grpc/proto/greet.proto
syntax = "proto3";
package greet;
option go_package = "github.com/apache/dubbo-go-samples/rpc/grpc/proto;greet";
message GreetRequest {
string name = 1;
}
message GreetResponse {
string greeting = 1;
}
service GreetService {
rpc Greet(GreetRequest) returns (GreetResponse) {}
}
Source file path: dubbo-go-sample/rpc/grpc/go-server/cmd/main.go
type GreetTripleServer struct {
}
func (srv *GreetTripleServer) Greet(ctx context.Context, req *greet.GreetRequest) (*greet.GreetResponse, error) {
resp := &greet.GreetResponse{Greeting: "dubbo:" + req.Name}
return resp, nil
}
func main() {
srv, err := server.NewServer(
server.WithServerProtocol(
protocol.WithPort(20000),
protocol.WithTriple(),
),
)
if err != nil {
panic(err)
}
if err := greet.RegisterGreetServiceHandler(srv, &GreetTripleServer{}); err != nil {
panic(err)
}
if err := srv.Serve(); err != nil {
logger.Error(err)
}
}
Source file path: dubbo-go-sample/rpc/grpc/grpc-server/cmd/main.go
type server struct {
pb.UnimplementedGreetServiceServer
}
func (s *server) Greet(ctx context.Context, req *pb.GreetRequest) (*pb.GreetResponse, error) {
resp := &pb.GreetResponse{Greeting: "grpc:" + req.Name}
return resp, nil
}
func main() {
lis, err := net.Listen("tcp", "127.0.0.1:20001")
if err != nil {
logger.Fatalf("failed to listen: %v", err)
}
s := grpc.NewServer()
pb.RegisterGreetServiceServer(s, &server{})
logger.Infof("server listening at %v", lis.Addr())
if err := s.Serve(lis); err != nil {
logger.Fatalf("failed to serve: %v", err)
}
}
Source file path: dubbo-go-sample/rpc/grpc/go-client/cmd/main.go
package main
import (
"context"
"dubbo.apache.org/dubbo-go/v3/client"
_ "dubbo.apache.org/dubbo-go/v3/imports"
greet "github.com/apache/dubbo-go-samples/rpc/grpc/proto"
"github.com/dubbogo/gost/log/logger"
)
func main() {
// test connect with dubbo
dubboCli, err := client.NewClient(
client.WithClientURL("127.0.0.1:20000"),
)
if err != nil {
panic(err)
}
svc, err := greet.NewGreetService(dubboCli)
if err != nil {
panic(err)
}
resp, err := svc.Greet(context.Background(), &greet.GreetRequest{Name: "hello world"})
if err != nil {
logger.Error(err)
}
logger.Infof("Greet response: %s", resp.Greeting)
// test connect with grpc
grpcCli, err := client.NewClient(
client.WithClientURL("127.0.0.1:20001"),
)
if err != nil {
panic(err)
}
svc, err = greet.NewGreetService(grpcCli)
if err != nil {
panic(err)
}
resp, err = svc.Greet(context.Background(), &greet.GreetRequest{Name: "hello world"})
if err != nil {
logger.Error(err)
}
logger.Infof("Greet response: %s", resp.Greeting)
}
Source file path: dubbo-go-sample/rpc/grpc/grpc-client/cmd/main.go
package main
import (
"context"
"time"
"github.com/dubbogo/gost/log/logger"
pb "github.com/apache/dubbo-go-samples/rpc/grpc/proto"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials/insecure"
)
func main() {
// test connect with grpc
grpcConn, err := grpc.Dial("127.0.0.1:20001", grpc.WithTransportCredentials(insecure.NewCredentials()))
if err != nil {
logger.Fatalf("did not connect: %v", err)
}
defer grpcConn.Close()
c := pb.NewGreetServiceClient(grpcConn)
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
resp, err := c.Greet(ctx, &pb.GreetRequest{Name: "hello world"})
if err != nil {
logger.Fatalf("could not greet: %v", err)
}
logger.Infof("Greet response: %s", resp.Greeting)
// test connect with dubbo
dubboConn, err := grpc.Dial("127.0.0.1:20000", grpc.WithTransportCredentials(insecure.NewCredentials()))
if err != nil {
logger.Fatalf("did not connect: %v", err)
}
defer dubboConn.Close()
c = pb.NewGreetServiceClient(dubboConn)
ctx, cancel = context.WithTimeout(context.Background(), time.Second)
defer cancel()
resp, err = c.Greet(ctx, &pb.GreetRequest{Name: "hello world"})
if err != nil {
logger.Fatalf("could not greet: %v", err)
}
logger.Infof("Greet response: %s", resp.Greeting)
}
Start the dubbo-go server and gRPC server first, then start the dubbo-go client and gRPC client, and observe the console output.
Dubbo-go client output:
Greet response: dubbo:hello world
Greet response: grpc:hello world
gRPC client output:
Greet response: grpc:hello world
Greet response: dubbo:hello world