discovery

ctx := context.TODO()
db, err := ydb.Open(ctx, "grpc://localhost:2136/local")
if err != nil {
	fmt.Printf("failed to connect: %v", err)

	return
}
defer db.Close(ctx) // cleanup resources
endpoints, err := db.Discovery().Discover(ctx)
if err != nil {
	fmt.Printf("discover failed: %v", err)

	return
}
fmt.Printf("%s endpoints:\n", db.Name())
for i, e := range endpoints {
	fmt.Printf("%d) %s\n", i, e.String())
}

ctx := context.TODO()
db, err := ydb.Open(ctx, "grpc://localhost:2136/local")
if err != nil {
	fmt.Printf("failed to connect: %v", err)

	return
}
defer db.Close(ctx) // cleanup resources
whoAmI, err := db.Discovery().WhoAmI(ctx)
if err != nil {
	fmt.Printf("discover failed: %v", err)

	return
}
fmt.Printf("%s whoAmI: %s\n", db.Name(), whoAmI.String())