Merge pull request #58489 from bowei/cp-routes

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

GCE: Change routes to use the generated code

GCE: Change routes to use the generated code

```release-note
NONE
```

pkg/cloudprovider/providers/gce/gce_routes.go

@@ -17,95 +17,75 @@ limitations under the License.
 package gce
 
 import (
+	"context"
 	"fmt"
 	"net/http"
 	"path"
 
-	"k8s.io/apimachinery/pkg/types"
-	"k8s.io/kubernetes/pkg/cloudprovider"
-
 	"github.com/golang/glog"
 	compute "google.golang.org/api/compute/v1"
+	"k8s.io/apimachinery/pkg/types"
+
+	"k8s.io/kubernetes/pkg/cloudprovider"
+	"k8s.io/kubernetes/pkg/cloudprovider/providers/gce/cloud/filter"
+	"k8s.io/kubernetes/pkg/cloudprovider/providers/gce/cloud/meta"
 )
 
 func newRoutesMetricContext(request string) *metricContext {
 	return newGenericMetricContext("routes", request, unusedMetricLabel, unusedMetricLabel, computeV1Version)
 }
 
+// ListRoutes in the cloud environment.
 func (gce *GCECloud) ListRoutes(clusterName string) ([]*cloudprovider.Route, error) {
-	var routes []*cloudprovider.Route
-	pageToken := ""
-	page := 0
-	for ; page == 0 || (pageToken != "" && page < maxPages); page++ {
-		mc := newRoutesMetricContext("list_page")
-		listCall := gce.service.Routes.List(gce.NetworkProjectID())
-
+	mc := newRoutesMetricContext("list")
 	prefix := truncateClusterName(clusterName)
-		// Filter for routes starting with clustername AND belonging to the
-		// relevant gcp network AND having description = "k8s-node-route".
-		filter := "(name eq " + prefix + "-.*) "
-		filter = filter + "(network eq " + gce.NetworkURL() + ") "
-		filter = filter + "(description eq " + k8sNodeRouteTag + ")"
-		listCall = listCall.Filter(filter)
-		if pageToken != "" {
-			listCall = listCall.PageToken(pageToken)
-		}
-		res, err := listCall.Do()
-		mc.Observe(err)
+	f := filter.Regexp("name", prefix+"-.*").AndRegexp("network", gce.NetworkURL()).AndRegexp("description", k8sNodeRouteTag)
+	routes, err := gce.c.Routes().List(context.Background(), f)
 	if err != nil {
-			glog.Errorf("Error getting routes from GCE: %v", err)
-			return nil, err
+		return nil, mc.Observe(err)
 	}
-		pageToken = res.NextPageToken
-		for _, r := range res.Items {
+	var croutes []*cloudprovider.Route
+	for _, r := range routes {
 		target := path.Base(r.NextHopInstance)
 		// TODO: Should we lastComponent(target) this?
 		targetNodeName := types.NodeName(target) // NodeName == Instance Name on GCE
-			routes = append(routes, &cloudprovider.Route{Name: r.Name, TargetNode: targetNodeName, DestinationCIDR: r.DestRange})
+		croutes = append(croutes, &cloudprovider.Route{
+			Name:            r.Name,
+			TargetNode:      targetNodeName,
+			DestinationCIDR: r.DestRange,
+		})
 	}
-	}
-	if page >= maxPages {
-		glog.Errorf("ListRoutes exceeded maxPages=%d for Routes.List; truncating.", maxPages)
-	}
-	return routes, nil
+	return croutes, mc.Observe(nil)
 }
 
+// CreateRoute in the cloud environment.
 func (gce *GCECloud) CreateRoute(clusterName string, nameHint string, route *cloudprovider.Route) error {
-	routeName := truncateClusterName(clusterName) + "-" + nameHint
-
-	instanceName := mapNodeNameToInstanceName(route.TargetNode)
-	targetInstance, err := gce.getInstanceByName(instanceName)
-	if err != nil {
-		return err
-	}
-
 	mc := newRoutesMetricContext("create")
-	insertOp, err := gce.service.Routes.Insert(gce.NetworkProjectID(), &compute.Route{
-		Name:            routeName,
+
+	targetInstance, err := gce.getInstanceByName(mapNodeNameToInstanceName(route.TargetNode))
+	if err != nil {
+		return mc.Observe(err)
+	}
+	cr := &compute.Route{
+		Name:            truncateClusterName(clusterName) + "-" + nameHint,
 		DestRange:       route.DestinationCIDR,
 		NextHopInstance: fmt.Sprintf("zones/%s/instances/%s", targetInstance.Zone, targetInstance.Name),
 		Network:         gce.NetworkURL(),
 		Priority:        1000,
 		Description:     k8sNodeRouteTag,
-	}).Do()
-	if err != nil {
+	}
+	err = gce.c.Routes().Insert(context.Background(), meta.GlobalKey(cr.Name), cr)
 	if isHTTPErrorCode(err, http.StatusConflict) {
-			glog.Infof("Route %v already exists.", routeName)
-			return nil
-		} else {
+		glog.Infof("Route %q already exists.", cr.Name)
+		err = nil
+	}
 	return mc.Observe(err)
 }
-	}
-	return gce.waitForGlobalOpInProject(insertOp, gce.NetworkProjectID(), mc)
-}
 
+// DeleteRoute from the cloud environment.
 func (gce *GCECloud) DeleteRoute(clusterName string, route *cloudprovider.Route) error {
 	mc := newRoutesMetricContext("delete")
-	deleteOp, err := gce.service.Routes.Delete(gce.NetworkProjectID(), route.Name).Do()
-	if err != nil {
-		return mc.Observe(err)
-	}
-	return gce.waitForGlobalOpInProject(deleteOp, gce.NetworkProjectID(), mc)
+	return mc.Observe(gce.c.Routes().Delete(context.Background(), meta.GlobalKey(route.Name)))
 }
 
 func truncateClusterName(clusterName string) string {