forked from kubernetes/kops
/
loadbalancerwhitelist.go
141 lines (118 loc) · 4.45 KB
/
loadbalancerwhitelist.go
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/*
Copyright 2018 The Kubernetes Authors.
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 alitasks
import (
"fmt"
"strings"
"github.com/golang/glog"
"k8s.io/kops/upup/pkg/fi"
"k8s.io/kops/upup/pkg/fi/cloudup/aliup"
"k8s.io/kops/upup/pkg/fi/cloudup/terraform"
)
//go:generate fitask -type=LoadBalancerWhiteList
type LoadBalancerWhiteList struct {
LoadBalancer *LoadBalancer
LoadBalancerListener *LoadBalancerListener
Name *string
SourceItems *string
Lifecycle *fi.Lifecycle
}
var _ fi.CompareWithID = &LoadBalancerWhiteList{}
func (l *LoadBalancerWhiteList) CompareWithID() *string {
return l.Name
}
func (l *LoadBalancerWhiteList) Find(c *fi.Context) (*LoadBalancerWhiteList, error) {
if l.LoadBalancer == nil || l.LoadBalancer.LoadbalancerId == nil {
glog.V(4).Infof("LoadBalancer / LoadbalancerId not found for %s, skipping Find", fi.StringValue(l.Name))
return nil, nil
}
if l.LoadBalancerListener == nil || l.LoadBalancerListener.ListenerPort == nil {
glog.V(4).Infof("LoadBalancerListener / LoadbalancerListenerPort not found for %s, skipping Find", fi.StringValue(l.Name))
return nil, nil
}
cloud := c.Cloud.(aliup.ALICloud)
loadBalancerId := fi.StringValue(l.LoadBalancer.LoadbalancerId)
listenertPort := fi.IntValue(l.LoadBalancerListener.ListenerPort)
response, err := cloud.SlbClient().DescribeListenerAccessControlAttribute(loadBalancerId, listenertPort)
if err != nil {
return nil, fmt.Errorf("error finding LoadBalancerWhiteList: %v", err)
}
if response.SourceItems == "" {
return nil, nil
}
glog.V(2).Infof("found matching LoadBalancerWhiteList of ListenerPort: %q", *l.LoadBalancerListener.ListenerPort)
actual := &LoadBalancerWhiteList{}
actual.SourceItems = fi.String(response.SourceItems)
// Ignore "system" fields
actual.LoadBalancer = l.LoadBalancer
actual.LoadBalancerListener = l.LoadBalancerListener
actual.Lifecycle = l.Lifecycle
return actual, nil
}
func (l *LoadBalancerWhiteList) Run(c *fi.Context) error {
return fi.DefaultDeltaRunMethod(l, c)
}
func (_ *LoadBalancerWhiteList) CheckChanges(a, e, changes *LoadBalancerWhiteList) error {
if a == nil {
if e.Name == nil {
return fi.RequiredField("Name")
}
}
return nil
}
func (_ *LoadBalancerWhiteList) RenderALI(t *aliup.ALIAPITarget, a, e, changes *LoadBalancerWhiteList) error {
glog.V(2).Infof("Updating LoadBalancerWhiteList of ListenerPort: %q", *e.LoadBalancerListener.ListenerPort)
loadBalancerId := fi.StringValue(e.LoadBalancer.LoadbalancerId)
listenertPort := fi.IntValue(e.LoadBalancerListener.ListenerPort)
sourceItems := fi.StringValue(e.SourceItems)
if sourceItems != "" {
err := t.Cloud.SlbClient().AddListenerWhiteListItem(loadBalancerId, listenertPort, sourceItems)
if err != nil {
return fmt.Errorf("error adding LoadBalancerWhiteListItems: %v", err)
}
}
if a != nil && changes.SourceItems != nil {
itemsToDelete := e.getWhiteItemsToDelete(fi.StringValue(a.SourceItems))
if itemsToDelete != "" {
err := t.Cloud.SlbClient().RemoveListenerWhiteListItem(loadBalancerId, listenertPort, itemsToDelete)
if err != nil {
return fmt.Errorf("error removing LoadBalancerWhiteListItems: %v", err)
}
}
}
return nil
}
func (l *LoadBalancerWhiteList) getWhiteItemsToDelete(currentWhiteItems string) string {
currentWhiteItemsList := strings.Split(currentWhiteItems, ",")
expectedWhiteItemsList := strings.Split(fi.StringValue(l.SourceItems), ",")
itemsToDelete := ""
for _, currentItem := range currentWhiteItemsList {
expected := false
if currentItem == "" {
continue
}
for _, expectedItem := range expectedWhiteItemsList {
if currentItem == expectedItem {
expected = true
}
}
if expected == false {
itemsToDelete = itemsToDelete + "," + currentItem
}
}
return itemsToDelete
}
func (_ *LoadBalancerWhiteList) RenderTerraform(t *terraform.TerraformTarget, a, e, changes *LoadBalancerWhiteList) error {
glog.Warningf("terraform does not support LoadBalancerWhiteList on ALI cloud")
return nil
}