/
infrastucture.go
79 lines (65 loc) · 2.26 KB
/
infrastucture.go
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// Copyright (c) 2022 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package infrastructure
import (
"context"
"net"
"github.com/gardener/gardener-extension-provider-openstack/pkg/apis/openstack"
openstackclient "github.com/gardener/gardener-extension-provider-openstack/pkg/openstack/client"
"github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/layer3/routers"
)
// CleanupKubernetesRoutes deletes all routes from the router which have a nextHop in the subnet.
func CleanupKubernetesRoutes(ctx context.Context, client openstackclient.Networking, routerID, workers string) error {
router, err := client.GetRouterByID(routerID)
if err != nil {
return err
}
if len(router) == 0 {
return nil
}
routes := []routers.Route{}
_, workersNet, err := net.ParseCIDR(workers)
if err != nil {
return err
}
for _, route := range router[0].Routes {
ipNode, _, err := net.ParseCIDR(route.NextHop + "/32")
if err != nil {
return err
}
if !workersNet.Contains(ipNode) {
routes = append(routes, route)
}
}
// return early if no changes were made
if len(router[0].Routes) == len(routes) {
return nil
}
if _, err := client.UpdateRoutesForRouter(routes, routerID); err != nil {
return err
}
return nil
}
// WorkersCIDR determines the Workers CIDR from the given InfrastructureConfig.
func WorkersCIDR(config *openstack.InfrastructureConfig) string {
if config == nil {
return ""
}
workersCIDR := config.Networks.Workers
// Backwards compatibility - remove this code in a future version.
if workersCIDR == "" {
workersCIDR = config.Networks.Worker
}
return workersCIDR
}