apply coding style

app/router/config.go

@@ -160,9 +160,21 @@ func (rr *RoutingRule) BuildCondition() (Condition, error) {
 }
 
 func (br *BalancingRule) Build(ohm outbound.Manager) (*Balancer, error) {
-	return &Balancer{
-		selectors: br.OutboundSelector,
-		strategy:  &RandomStrategy{},
-		ohm:       ohm,
-	}, nil
+	switch br.Strategy {
+	case "leastPing":
+		return &Balancer{
+			selectors: br.OutboundSelector,
+			strategy:  &LeastPingStrategy{},
+			ohm:       ohm,
+		}, nil
+	case "random":
+		fallthrough
+	default:
+		return &Balancer{
+			selectors: br.OutboundSelector,
+			strategy:  &RandomStrategy{},
+			ohm:       ohm,
+		}, nil
+
+	}
 }