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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,163 @@ | ||
| // Licensed to the Apache Software Foundation (ASF) under one or more | ||
| // contributor license agreements. See the NOTICE file distributed with | ||
| // this work for additional information regarding copyright ownership. | ||
| // The ASF licenses this file to You 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 controller | ||
|
|
||
| import ( | ||
| "context" | ||
|
|
||
| "go.uber.org/zap" | ||
| networkingv1 "k8s.io/api/networking/v1" | ||
| "k8s.io/client-go/tools/cache" | ||
| "k8s.io/client-go/util/workqueue" | ||
|
|
||
| "github.com/apache/apisix-ingress-controller/pkg/log" | ||
| "github.com/apache/apisix-ingress-controller/pkg/types" | ||
| ) | ||
|
|
||
| type ingressController struct { | ||
| controller *Controller | ||
| workqueue workqueue.RateLimitingInterface | ||
| workers int | ||
| } | ||
|
|
||
| func (c *Controller) newIngressController() *ingressController { | ||
| ctl := &ingressController{ | ||
| controller: c, | ||
| workqueue: workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), "ingress"), | ||
| workers: 1, | ||
| } | ||
|
|
||
| c.ingressInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{ | ||
| AddFunc: ctl.onAdd, | ||
| UpdateFunc: ctl.onUpdate, | ||
| DeleteFunc: ctl.OnDelete, | ||
| }) | ||
| return ctl | ||
| } | ||
|
|
||
| func (c *ingressController) run(ctx context.Context) { | ||
| log.Info("ingress controller started") | ||
| defer log.Infof("ingress controller exited") | ||
|
|
||
| if !cache.WaitForCacheSync(ctx.Done(), c.controller.ingressInformer.HasSynced, c.controller.ingressClassInformer.HasSynced) { | ||
| log.Errorf("cache sync failed") | ||
| return | ||
| } | ||
| for i := 0; i < c.workers; i++ { | ||
| go c.runWorker(ctx) | ||
| } | ||
| <-ctx.Done() | ||
| c.workqueue.ShutDown() | ||
| } | ||
|
|
||
| func (c *ingressController) runWorker(ctx context.Context) { | ||
| for { | ||
| obj, quit := c.workqueue.Get() | ||
| if quit { | ||
| return | ||
| } | ||
| err := c.sync(ctx, obj.(*types.Event)) | ||
| c.workqueue.Done(obj) | ||
| c.handleSyncErr(obj, err) | ||
| } | ||
| } | ||
|
|
||
| func (c *ingressController) sync(ctx context.Context, ev *types.Event) error { | ||
| return nil | ||
| } | ||
|
|
||
| func (c *ingressController) handleSyncErr(obj interface{}, err error) { | ||
| if err == nil { | ||
| c.workqueue.Forget(obj) | ||
| return | ||
| } | ||
| if c.workqueue.NumRequeues(obj) < _maxRetries { | ||
| log.Infow("sync ingress failed, will retry", | ||
| zap.Any("object", obj), | ||
| ) | ||
| c.workqueue.AddRateLimited(obj) | ||
| } else { | ||
| c.workqueue.Forget(obj) | ||
| log.Warnf("drop ingress %+v out of the queue", obj) | ||
| } | ||
| } | ||
|
|
||
| func (c *ingressController) onAdd(obj interface{}) { | ||
| key, err := cache.MetaNamespaceKeyFunc(obj) | ||
| if err != nil { | ||
| log.Errorf("found ingress resource with bad meta namesapce key: %s", err) | ||
| return | ||
| } | ||
| if !c.controller.namespaceWatching(key) { | ||
| return | ||
| } | ||
| log.Debugw("ingress add event arrived", | ||
| zap.Any("object", obj)) | ||
|
|
||
| c.workqueue.AddRateLimited(&types.Event{ | ||
| Type: types.EventAdd, | ||
| Object: key, | ||
| }) | ||
| } | ||
|
|
||
| func (c *ingressController) onUpdate(oldObj, newObj interface{}) { | ||
| prev := oldObj.(*networkingv1.Ingress) | ||
| curr := newObj.(*networkingv1.Ingress) | ||
| if prev.ResourceVersion >= curr.ResourceVersion { | ||
| return | ||
| } | ||
| key, err := cache.MetaNamespaceKeyFunc(newObj) | ||
| if err != nil { | ||
| log.Errorf("found ingress resource with bad meta namespace key: %s", err) | ||
| return | ||
| } | ||
| log.Debugw("ingress update event arrived", | ||
| zap.Any("new object", curr), | ||
| zap.Any("old object", prev), | ||
| ) | ||
|
|
||
| c.workqueue.AddRateLimited(&types.Event{ | ||
| Type: types.EventUpdate, | ||
| Object: key, | ||
| }) | ||
| } | ||
|
|
||
| func (c *ingressController) OnDelete(obj interface{}) { | ||
| au, ok := obj.(*networkingv1.Ingress) | ||
| if !ok { | ||
| tombstone, ok := obj.(cache.DeletedFinalStateUnknown) | ||
| if !ok { | ||
| return | ||
| } | ||
| au = tombstone.Obj.(*networkingv1.Ingress) | ||
| } | ||
|
|
||
| key, err := cache.DeletionHandlingMetaNamespaceKeyFunc(obj) | ||
| if err != nil { | ||
| log.Errorf("found ingress resource with bad meta namespace key: %s", err) | ||
| return | ||
| } | ||
| if !c.controller.namespaceWatching(key) { | ||
| return | ||
| } | ||
| log.Debugw("ingress delete event arrived", | ||
| zap.Any("final state", au), | ||
| ) | ||
| c.workqueue.AddRateLimited(&types.Event{ | ||
| Type: types.EventDelete, | ||
| Object: key, | ||
| Tombstone: au, | ||
| }) | ||
| } |