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kratos/examples/registry/etcd/client/main.go

69 lines
1.5 KiB

package main
import (
"context"
"log"
"time"
"github.com/go-kratos/etcd/registry"
"github.com/go-kratos/kratos/examples/helloworld/helloworld"
"github.com/go-kratos/kratos/v2/transport/grpc"
"github.com/go-kratos/kratos/v2/transport/http"
clientv3 "go.etcd.io/etcd/client/v3"
srcgrpc "google.golang.org/grpc"
)
func main() {
cli, err := clientv3.New(clientv3.Config{
Endpoints: []string{"127.0.0.1:2379"},
})
if err != nil {
panic(err)
}
r := registry.New(cli)
connGrpc, err := grpc.DialInsecure(
context.Background(),
grpc.WithEndpoint("discovery:///helloworld"),
grpc.WithDiscovery(r),
)
if err != nil {
log.Fatal(err)
}
defer connGrpc.Close()
connHttp, err := http.NewClient(
context.Background(),
http.WithEndpoint("discovery:///helloworld"),
http.WithDiscovery(r),
http.WithBlock(),
)
if err != nil {
log.Fatal(err)
}
defer connHttp.Close()
for {
callHTTP(r, connHttp)
callGRPC(r, connGrpc)
time.Sleep(time.Second)
}
}
func callGRPC(r *registry.Registry, conn *srcgrpc.ClientConn) {
client := helloworld.NewGreeterClient(conn)
reply, err := client.SayHello(context.Background(), &helloworld.HelloRequest{Name: "kratos"})
if err != nil {
log.Fatal(err)
}
log.Printf("[grpc] SayHello %+v\n", reply)
}
func callHTTP(r *registry.Registry,conn *http.Client) {
client := helloworld.NewGreeterHTTPClient(conn)
reply, err := client.SayHello(context.Background(), &helloworld.HelloRequest{Name: "kratos"})
if err != nil {
log.Fatal(err)
}
log.Printf("[http] SayHello %+v\n", reply)
}