add logging and don't get nodes where they exist in router (#1898)

* add logging and don't get nodes where they exist in router

* add more logging

router/options.go

@@ -24,6 +24,8 @@ type Options struct {
 	Advertise Strategy
 	// Context for additional options
 	Context context.Context
+	// Precache routes
+	Precache bool
 }
 
 // Id sets Router Id
@@ -68,6 +70,13 @@ func Advertise(a Strategy) Option {
 	}
 }
 
+// Precache the routes
+func Precache() Option {
+	return func(o *Options) {
+		o.Precache = true
+	}
+}
+
 // DefaultOptions returns router default options
 func DefaultOptions() Options {
 	return Options{