Initial Golang version

internal/grpc_server/grpc_server.go

@@ -0,0 +1,45 @@
+package grpc_server
+
+import (
+	"context"
+	"log"
+	"net"
+	"strconv"
+
+	"google.golang.org/grpc"
+
+	"github.com/dustinpianalto/snowflake/internal/generator"
+	"github.com/dustinpianalto/snowflake/snowflake"
+)
+
+const (
+	GRPC_PORT = ":50051"
+)
+
+type SnowflakeServer struct {
+	snowflake.UnimplementedSnowflakeServer
+}
+
+func (s *SnowflakeServer) GetSnowflake(ctx context.Context, in *snowflake.Empty) (*snowflake.SnowflakeReply, error) {
+	var id uint64
+	outputChan := make(chan uint64, 1)
+	defer close(outputChan)
+	generator.Generator.RequestChan <- outputChan
+	id = <-outputChan
+	return &snowflake.SnowflakeReply{Id: id, IdStr: strconv.FormatUint(id, 10)}, nil
+}
+
+func RunGRPCServer() {
+	grpcListener, err := net.Listen("tcp", GRPC_PORT)
+	if err != nil {
+		log.Fatalf("Failed to listen: %v", err)
+	}
+
+	grpcServer := grpc.NewServer()
+	snowflake.RegisterSnowflakeServer(grpcServer, &SnowflakeServer{})
+	log.Printf("GRPC Server Listening on %v", grpcListener.Addr())
+	if err := grpcServer.Serve(grpcListener); err != nil {
+		log.Fatalf("Failed to serve: %v", err)
+	}
+
+}