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package main
import (
"context"
"flag"
"fmt"
"io"
"log"
"time"
flatbuffers "github.com/google/flatbuffers/go"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials/insecure"
models "github.com/google/flatbuffers/grpc/examples/go/greeter/models"
)
var (
addr = "3000"
name = flag.String("name", "Flatbuffers", "name to be sent to server :D")
)
func printSayHello(client models.GreeterClient, name string) {
log.Printf("Name to be sent (%s)", name)
b := flatbuffers.NewBuilder(0)
i := b.CreateString(name)
models.HelloRequestStart(b)
models.HelloRequestAddName(b, i)
b.Finish(models.HelloRequestEnd(b))
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()
request, err := client.SayHello(ctx, b, grpc.CallContentSubtype("flatbuffers"))
if err != nil {
log.Fatalf("%v.SayHello(_) = _, %v: ", client, err)
}
log.Printf("server said %q", request.Message())
}
func printSayManyHello(client models.GreeterClient, name string) {
log.Printf("Name to be sent (%s)", name)
b := flatbuffers.NewBuilder(0)
i := b.CreateString(name)
models.HelloRequestStart(b)
models.HelloRequestAddName(b, i)
b.Finish(models.HelloRequestEnd(b))
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()
stream, err := client.SayManyHellos(ctx, b, grpc.CallContentSubtype("flatbuffers"))
if err != nil {
log.Fatalf("%v.SayManyHellos(_) = _, %v", client, err)
}
for {
request, err := stream.Recv()
if err == io.EOF {
break
}
if err != nil {
log.Fatalf("%v.SayManyHellos(_) = _, %v", client, err)
}
log.Printf("server said %q", request.Message())
}
}
func main() {
flag.Parse()
conn, err := grpc.Dial(fmt.Sprintf("localhost:%d", 3000),
grpc.WithTransportCredentials(insecure.NewCredentials()),
grpc.WithDefaultCallOptions(grpc.ForceCodec(flatbuffers.FlatbuffersCodec{})))
if err != nil {
log.Fatalf("fail to dial: %v", err)
}
defer conn.Close()
client := models.NewGreeterClient(conn)
printSayHello(client, *name)
printSayManyHello(client, *name)
}
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