This example demonstrates how to configure using yaml configuration files in Dubbo-go framework
.
├── go-client
│ ├── cmd
│ │ └── main.go
│ └── conf
│ └── dubbogo.yml
├── go-server
│ ├── cmd
│ │ └── main.go
│ └── conf
│ └── dubbogo.yml
└─── proto
├── greet.pb.go
├── greet.proto
└── greet.triple.go
The service is defined using IDL (./proto/greet.proto) and utilizes the Triple protocol.
cd path_to_dubbogo-sample/config_yaml/proto
protoc --go_out=. --go-triple_out=. ./greet.proto
export DUBBO_GO_CONFIG_PATH="../conf/dubbogo.yml"
cd path_to_dubbogo-sample/config_yaml/go-server/cmd
go run .
export DUBBO_GO_CONFIG_PATH="../conf/dubbogo.yml"
cd path_to_dubbogo-sample/config_yaml/go-client/cmd
go run .
Client-defined dubbogo.yaml
# dubbo client yaml configure file
dubbo:
registries:
demoZK:
protocol: zookeeper
timeout: 3s
address: 127.0.0.1:2181
consumer:
references:
GreetServiceImpl:
protocol: tri
interface: com.apache.dubbo.sample.Greeter
registry: demoZK
retries: 3
timeout: 3000
Read and load files through dubbo.Load()
.
//...
func main() {
//...
if err := dubbo.Load(); err != nil {
//...
}
//...
}
Server-defined dubbogo.yaml
# dubbo server yaml configure file
dubbo:
registries:
demoZK:
protocol: zookeeper
timeout: 10s
address: 127.0.0.1:2181
protocols:
tripleProtocol:
name: tri
port: 20000
provider:
services:
GreetTripleServer:
interface: com.apache.dubbo.sample.Greeter
Read and load files through dubbo.Load()
.
//...
func main() {
//...
if err := dubbo.Load(); err != nil {
//...
}
//...
}
Source file path :dubbo-go-sample/context/proto/greet.proto
syntax = "proto3";
package greet;
option go_package = "github.com/apache/dubbo-go-samples/config_yaml/proto;greet";
message GreetRequest {
string name = 1;
}
message GreetResponse {
string greeting = 1;
}
service GreetService {
rpc Greet(GreetRequest) returns (GreetResponse) {}
}
On the server side, define GreetTripleServer struct:
type GreetServiceHandler interface {
Greet(context.Context, *GreetRequest) (*GreetResponse, error)
}
Implement the GreetServiceHandler interface and register it through greet.SetProviderService(srv common.RPCService)
Load the configuration file through dubbo.Load()
Source file path :dubbo-go-sample/config_yaml/go-server/cmd/main.go
package main
import (
"context"
"errors"
"fmt"
"dubbo.apache.org/dubbo-go/v3"
_ "dubbo.apache.org/dubbo-go/v3/imports"
greet "github.com/apache/dubbo-go-samples/config_yaml/proto"
)
type GreetTripleServer struct {
}
func (srv *GreetTripleServer) Greet(_ context.Context, req *greet.GreetRequest) (*greet.GreetResponse, error) {
name := req.Name
if name != "ConfigTest" {
errInfo := fmt.Sprintf("name is not right: %s", name)
return nil, errors.New(errInfo)
}
resp := &greet.GreetResponse{Greeting: req.Name + "-Success"}
return resp, nil
}
func main() {
greet.SetProviderService(&GreetTripleServer{})
if err := dubbo.Load(); err != nil {
panic(err)
}
select {}
}
In the client, define greet.GreetServiceImpl instance and register it through greet.SetConsumerService(srv common.RPCService)
:
Load the configuration file through dubbo.Load()
Source file path :dubbo-go-sample/config_yaml/go-client/cmd/main.go
package main
import (
"context"
"dubbo.apache.org/dubbo-go/v3"
_ "dubbo.apache.org/dubbo-go/v3/imports"
greet "github.com/apache/dubbo-go-samples/config_yaml/proto"
"github.com/dubbogo/gost/log/logger"
)
var svc = new(greet.GreetServiceImpl)
func main() {
greet.SetConsumerService(svc)
if err := dubbo.Load(); err != nil {
panic(err)
}
req, err := svc.Greet(context.Background(), &greet.GreetRequest{Name: "ConfigTest"})
if err != nil || req.Greeting != "ConfigTest-Success" {
panic(err)
}
logger.Info("ConfigTest successfully")
}
Start the server first, then the client.
If the client prints ConfigTest Successful
, it means the configuration is loaded and the call success.
2024-03-11 15:47:29 INFO cmd/main.go:39 ConfigTest successfully