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refactor App Protect DoS controller (#6212)
move App Protect DOS controller code to it's own file
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,297 @@ | ||
| /** | ||
| * Copyright (c) F5, Inc. | ||
| * | ||
| * This source code is licensed under the Apache License, Version 2.0 license found in the | ||
| * LICENSE file in the root directory of this source tree. | ||
| */ | ||
|
|
||
| package k8s | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "reflect" | ||
|
|
||
| "github.com/golang/glog" | ||
| "github.com/nginxinc/kubernetes-ingress/internal/k8s/appprotectdos" | ||
| "github.com/nginxinc/kubernetes-ingress/pkg/apis/dos/v1beta1" | ||
| api_v1 "k8s.io/api/core/v1" | ||
| "k8s.io/apimachinery/pkg/apis/meta/v1/unstructured" | ||
| "k8s.io/client-go/tools/cache" | ||
| ) | ||
|
|
||
| func createAppProtectDosPolicyHandlers(lbc *LoadBalancerController) cache.ResourceEventHandlerFuncs { | ||
| handlers := cache.ResourceEventHandlerFuncs{ | ||
| AddFunc: func(obj interface{}) { | ||
| pol := obj.(*unstructured.Unstructured) | ||
| glog.V(3).Infof("Adding AppProtectDosPolicy: %v", pol.GetName()) | ||
| lbc.AddSyncQueue(pol) | ||
| }, | ||
| UpdateFunc: func(oldObj, obj interface{}) { | ||
| oldPol := oldObj.(*unstructured.Unstructured) | ||
| newPol := obj.(*unstructured.Unstructured) | ||
| different, err := areResourcesDifferent(oldPol, newPol) | ||
| if err != nil { | ||
| glog.V(3).Infof("Error when comparing policy %v", err) | ||
| lbc.AddSyncQueue(newPol) | ||
| } | ||
| if different { | ||
| glog.V(3).Infof("ApDosPolicy %v changed, syncing", oldPol.GetName()) | ||
| lbc.AddSyncQueue(newPol) | ||
| } | ||
| }, | ||
| DeleteFunc: func(obj interface{}) { | ||
| lbc.AddSyncQueue(obj) | ||
| }, | ||
| } | ||
| return handlers | ||
| } | ||
|
|
||
| func createAppProtectDosLogConfHandlers(lbc *LoadBalancerController) cache.ResourceEventHandlerFuncs { | ||
| handlers := cache.ResourceEventHandlerFuncs{ | ||
| AddFunc: func(obj interface{}) { | ||
| conf := obj.(*unstructured.Unstructured) | ||
| glog.V(3).Infof("Adding AppProtectDosLogConf: %v", conf.GetName()) | ||
| lbc.AddSyncQueue(conf) | ||
| }, | ||
| UpdateFunc: func(oldObj, obj interface{}) { | ||
| oldConf := oldObj.(*unstructured.Unstructured) | ||
| newConf := obj.(*unstructured.Unstructured) | ||
| different, err := areResourcesDifferent(oldConf, newConf) | ||
| if err != nil { | ||
| glog.V(3).Infof("Error when comparing DosLogConfs %v", err) | ||
| lbc.AddSyncQueue(newConf) | ||
| } | ||
| if different { | ||
| glog.V(3).Infof("ApDosLogConf %v changed, syncing", oldConf.GetName()) | ||
| lbc.AddSyncQueue(newConf) | ||
| } | ||
| }, | ||
| DeleteFunc: func(obj interface{}) { | ||
| lbc.AddSyncQueue(obj) | ||
| }, | ||
| } | ||
| return handlers | ||
| } | ||
|
|
||
| func createAppProtectDosProtectedResourceHandlers(lbc *LoadBalancerController) cache.ResourceEventHandlerFuncs { | ||
| handlers := cache.ResourceEventHandlerFuncs{ | ||
| AddFunc: func(obj interface{}) { | ||
| conf := obj.(*v1beta1.DosProtectedResource) | ||
| glog.V(3).Infof("Adding DosProtectedResource: %v", conf.GetName()) | ||
| lbc.AddSyncQueue(conf) | ||
| }, | ||
| UpdateFunc: func(oldObj, obj interface{}) { | ||
| oldConf := oldObj.(*v1beta1.DosProtectedResource) | ||
| newConf := obj.(*v1beta1.DosProtectedResource) | ||
|
|
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| if !reflect.DeepEqual(oldConf.Spec, newConf.Spec) { | ||
| glog.V(3).Infof("DosProtectedResource %v changed, syncing", oldConf.GetName()) | ||
| lbc.AddSyncQueue(newConf) | ||
| } | ||
| }, | ||
| DeleteFunc: func(obj interface{}) { | ||
| lbc.AddSyncQueue(obj) | ||
| }, | ||
| } | ||
| return handlers | ||
| } | ||
|
|
||
| // addAppProtectDosPolicyHandler creates dynamic informers for custom appprotectdos policy resource | ||
| func (nsi *namespacedInformer) addAppProtectDosPolicyHandler(handlers cache.ResourceEventHandlerFuncs) { | ||
| informer := nsi.dynInformerFactory.ForResource(appprotectdos.DosPolicyGVR).Informer() | ||
| informer.AddEventHandler(handlers) //nolint:errcheck,gosec | ||
| nsi.appProtectDosPolicyLister = informer.GetStore() | ||
|
|
||
| nsi.cacheSyncs = append(nsi.cacheSyncs, informer.HasSynced) | ||
| } | ||
|
|
||
| // addAppProtectDosLogConfHandler creates dynamic informer for custom appprotectdos logging config resource | ||
| func (nsi *namespacedInformer) addAppProtectDosLogConfHandler(handlers cache.ResourceEventHandlerFuncs) { | ||
| informer := nsi.dynInformerFactory.ForResource(appprotectdos.DosLogConfGVR).Informer() | ||
| informer.AddEventHandler(handlers) //nolint:errcheck,gosec | ||
| nsi.appProtectDosLogConfLister = informer.GetStore() | ||
|
|
||
| nsi.cacheSyncs = append(nsi.cacheSyncs, informer.HasSynced) | ||
| } | ||
|
|
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| // addAppProtectDosLogConfHandler creates dynamic informers for custom appprotectdos logging config resource | ||
| func (nsi *namespacedInformer) addAppProtectDosProtectedResourceHandler(handlers cache.ResourceEventHandlerFuncs) { | ||
| informer := nsi.confSharedInformerFactory.Appprotectdos().V1beta1().DosProtectedResources().Informer() | ||
| informer.AddEventHandler(handlers) //nolint:errcheck,gosec | ||
| nsi.appProtectDosProtectedLister = informer.GetStore() | ||
|
|
||
| nsi.cacheSyncs = append(nsi.cacheSyncs, informer.HasSynced) | ||
| } | ||
|
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| func (lbc *LoadBalancerController) syncAppProtectDosPolicy(task task) { | ||
| key := task.Key | ||
| glog.V(3).Infof("Syncing AppProtectDosPolicy %v", key) | ||
| var obj interface{} | ||
| var polExists bool | ||
| var err error | ||
|
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| ns, _, _ := cache.SplitMetaNamespaceKey(key) | ||
| obj, polExists, err = lbc.getNamespacedInformer(ns).appProtectDosPolicyLister.GetByKey(key) | ||
| if err != nil { | ||
| lbc.syncQueue.Requeue(task, err) | ||
| return | ||
| } | ||
|
|
||
| var changes []appprotectdos.Change | ||
| var problems []appprotectdos.Problem | ||
|
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| if !polExists { | ||
| glog.V(2).Infof("Deleting APDosPolicy: %v\n", key) | ||
| changes, problems = lbc.dosConfiguration.DeletePolicy(key) | ||
| } else { | ||
| glog.V(2).Infof("Adding or Updating APDosPolicy: %v\n", key) | ||
| changes, problems = lbc.dosConfiguration.AddOrUpdatePolicy(obj.(*unstructured.Unstructured)) | ||
| } | ||
|
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| lbc.processAppProtectDosChanges(changes) | ||
| lbc.processAppProtectDosProblems(problems) | ||
| } | ||
|
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| func (lbc *LoadBalancerController) syncAppProtectDosLogConf(task task) { | ||
| key := task.Key | ||
| glog.V(3).Infof("Syncing APDosLogConf %v", key) | ||
| var obj interface{} | ||
| var confExists bool | ||
| var err error | ||
|
|
||
| ns, _, _ := cache.SplitMetaNamespaceKey(key) | ||
| obj, confExists, err = lbc.getNamespacedInformer(ns).appProtectDosLogConfLister.GetByKey(key) | ||
| if err != nil { | ||
| lbc.syncQueue.Requeue(task, err) | ||
| return | ||
| } | ||
|
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| var changes []appprotectdos.Change | ||
| var problems []appprotectdos.Problem | ||
|
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| if !confExists { | ||
| glog.V(2).Infof("Deleting APDosLogConf: %v\n", key) | ||
| changes, problems = lbc.dosConfiguration.DeleteLogConf(key) | ||
| } else { | ||
| glog.V(2).Infof("Adding or Updating APDosLogConf: %v\n", key) | ||
| changes, problems = lbc.dosConfiguration.AddOrUpdateLogConf(obj.(*unstructured.Unstructured)) | ||
| } | ||
|
|
||
| lbc.processAppProtectDosChanges(changes) | ||
| lbc.processAppProtectDosProblems(problems) | ||
| } | ||
|
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| func (lbc *LoadBalancerController) syncDosProtectedResource(task task) { | ||
| key := task.Key | ||
| glog.V(3).Infof("Syncing DosProtectedResource %v", key) | ||
| var obj interface{} | ||
| var confExists bool | ||
| var err error | ||
|
|
||
| ns, _, _ := cache.SplitMetaNamespaceKey(key) | ||
| obj, confExists, err = lbc.getNamespacedInformer(ns).appProtectDosProtectedLister.GetByKey(key) | ||
| if err != nil { | ||
| lbc.syncQueue.Requeue(task, err) | ||
| return | ||
| } | ||
|
|
||
| var changes []appprotectdos.Change | ||
| var problems []appprotectdos.Problem | ||
|
|
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| if confExists { | ||
| glog.V(2).Infof("Adding or Updating DosProtectedResource: %v\n", key) | ||
| changes, problems = lbc.dosConfiguration.AddOrUpdateDosProtectedResource(obj.(*v1beta1.DosProtectedResource)) | ||
| } else { | ||
| glog.V(2).Infof("Deleting DosProtectedResource: %v\n", key) | ||
| changes, problems = lbc.dosConfiguration.DeleteProtectedResource(key) | ||
| } | ||
|
|
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| lbc.processAppProtectDosChanges(changes) | ||
| lbc.processAppProtectDosProblems(problems) | ||
| } | ||
|
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| func (lbc *LoadBalancerController) processAppProtectDosChanges(changes []appprotectdos.Change) { | ||
| glog.V(3).Infof("Processing %v App Protect Dos changes", len(changes)) | ||
|
|
||
| for _, c := range changes { | ||
| if c.Op == appprotectdos.AddOrUpdate { | ||
| switch impl := c.Resource.(type) { | ||
| case *appprotectdos.DosProtectedResourceEx: | ||
| glog.V(3).Infof("handling change UPDATE OR ADD for DOS protected %s/%s", impl.Obj.Namespace, impl.Obj.Name) | ||
| resources := lbc.configuration.FindResourcesForAppProtectDosProtected(impl.Obj.Namespace, impl.Obj.Name) | ||
| resourceExes := lbc.createExtendedResources(resources) | ||
| warnings, err := lbc.configurator.AddOrUpdateResourcesThatUseDosProtected(resourceExes.IngressExes, resourceExes.MergeableIngresses, resourceExes.VirtualServerExes) | ||
| lbc.updateResourcesStatusAndEvents(resources, warnings, err) | ||
| msg := fmt.Sprintf("Configuration for %s/%s was added or updated", impl.Obj.Namespace, impl.Obj.Name) | ||
| lbc.recorder.Event(impl.Obj, api_v1.EventTypeNormal, "AddedOrUpdated", msg) | ||
| case *appprotectdos.DosPolicyEx: | ||
| msg := "Configuration was added or updated" | ||
| lbc.recorder.Event(impl.Obj, api_v1.EventTypeNormal, "AddedOrUpdated", msg) | ||
| case *appprotectdos.DosLogConfEx: | ||
| eventType := api_v1.EventTypeNormal | ||
| eventTitle := "AddedOrUpdated" | ||
| msg := "Configuration was added or updated" | ||
| if impl.ErrorMsg != "" { | ||
| msg += fmt.Sprintf(" ; with warning(s): %s", impl.ErrorMsg) | ||
| eventTitle = "AddedOrUpdatedWithWarning" | ||
| eventType = api_v1.EventTypeWarning | ||
| } | ||
| lbc.recorder.Event(impl.Obj, eventType, eventTitle, msg) | ||
| } | ||
| } else if c.Op == appprotectdos.Delete { | ||
| switch impl := c.Resource.(type) { | ||
| case *appprotectdos.DosPolicyEx: | ||
| lbc.configurator.DeleteAppProtectDosPolicy(impl.Obj) | ||
|
|
||
| case *appprotectdos.DosLogConfEx: | ||
| lbc.configurator.DeleteAppProtectDosLogConf(impl.Obj) | ||
|
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| case *appprotectdos.DosProtectedResourceEx: | ||
| glog.V(3).Infof("handling change DELETE for DOS protected %s/%s", impl.Obj.Namespace, impl.Obj.Name) | ||
| resources := lbc.configuration.FindResourcesForAppProtectDosProtected(impl.Obj.Namespace, impl.Obj.Name) | ||
| resourceExes := lbc.createExtendedResources(resources) | ||
| warnings, err := lbc.configurator.AddOrUpdateResourcesThatUseDosProtected(resourceExes.IngressExes, resourceExes.MergeableIngresses, resourceExes.VirtualServerExes) | ||
| lbc.updateResourcesStatusAndEvents(resources, warnings, err) | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| func (lbc *LoadBalancerController) processAppProtectDosProblems(problems []appprotectdos.Problem) { | ||
| glog.V(3).Infof("Processing %v App Protect Dos problems", len(problems)) | ||
|
|
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| for _, p := range problems { | ||
| eventType := api_v1.EventTypeWarning | ||
| lbc.recorder.Event(p.Object, eventType, p.Reason, p.Message) | ||
| } | ||
| } | ||
|
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| func (lbc *LoadBalancerController) cleanupUnwatchedAppDosResources(nsi *namespacedInformer) { | ||
| for _, obj := range nsi.appProtectDosPolicyLister.List() { | ||
| dosPol := obj.((*unstructured.Unstructured)) | ||
| namespace := dosPol.GetNamespace() | ||
| name := dosPol.GetName() | ||
|
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| changes, problems := lbc.dosConfiguration.DeletePolicy(namespace + "/" + name) | ||
| lbc.processAppProtectDosChanges(changes) | ||
| lbc.processAppProtectDosProblems(problems) | ||
| } | ||
| for _, obj := range nsi.appProtectDosProtectedLister.List() { | ||
| dosPol := obj.((*unstructured.Unstructured)) | ||
| namespace := dosPol.GetNamespace() | ||
| name := dosPol.GetName() | ||
|
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| changes, problems := lbc.dosConfiguration.DeleteProtectedResource(namespace + "/" + name) | ||
| lbc.processAppProtectDosChanges(changes) | ||
| lbc.processAppProtectDosProblems(problems) | ||
| } | ||
| for _, obj := range nsi.appProtectDosLogConfLister.List() { | ||
| dosPol := obj.((*unstructured.Unstructured)) | ||
| namespace := dosPol.GetNamespace() | ||
| name := dosPol.GetName() | ||
|
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| changes, problems := lbc.dosConfiguration.DeleteLogConf(namespace + "/" + name) | ||
| lbc.processAppProtectDosChanges(changes) | ||
| lbc.processAppProtectDosProblems(problems) | ||
| } | ||
| } |
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