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feat: consumer controller loop (#516)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,223 @@ | ||
| // 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 ingress | ||
|
|
||
| import ( | ||
| "context" | ||
| "time" | ||
|
|
||
| "go.uber.org/zap" | ||
| corev1 "k8s.io/api/core/v1" | ||
| k8serrors "k8s.io/apimachinery/pkg/api/errors" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/client-go/tools/cache" | ||
| "k8s.io/client-go/util/workqueue" | ||
|
|
||
| configv2alpha1 "github.com/apache/apisix-ingress-controller/pkg/kube/apisix/apis/config/v2alpha1" | ||
| "github.com/apache/apisix-ingress-controller/pkg/log" | ||
| "github.com/apache/apisix-ingress-controller/pkg/types" | ||
| ) | ||
|
|
||
| type apisixConsumerController struct { | ||
| controller *Controller | ||
| workqueue workqueue.RateLimitingInterface | ||
| workers int | ||
| } | ||
|
|
||
| func (c *Controller) newApisixConsumerController() *apisixConsumerController { | ||
| ctl := &apisixConsumerController{ | ||
| controller: c, | ||
| workqueue: workqueue.NewNamedRateLimitingQueue(workqueue.NewItemFastSlowRateLimiter(1*time.Second, 60*time.Second, 5), "ApisixConsumer"), | ||
| workers: 1, | ||
| } | ||
| ctl.controller.apisixConsumerInformer.AddEventHandler( | ||
| cache.ResourceEventHandlerFuncs{ | ||
| AddFunc: ctl.onAdd, | ||
| UpdateFunc: ctl.onUpdate, | ||
| DeleteFunc: ctl.onDelete, | ||
| }, | ||
| ) | ||
| return ctl | ||
| } | ||
|
|
||
| func (c *apisixConsumerController) run(ctx context.Context) { | ||
| log.Info("ApisixConsumer controller started") | ||
| defer log.Info("ApisixConsumer controller exited") | ||
| if ok := cache.WaitForCacheSync(ctx.Done(), c.controller.apisixConsumerInformer.HasSynced); !ok { | ||
| log.Error("cache sync failed") | ||
| return | ||
| } | ||
| for i := 0; i < c.workers; i++ { | ||
| go c.runWorker(ctx) | ||
| } | ||
| <-ctx.Done() | ||
| c.workqueue.ShutDown() | ||
| } | ||
|
|
||
| func (c *apisixConsumerController) 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 *apisixConsumerController) sync(ctx context.Context, ev *types.Event) error { | ||
| key := ev.Object.(string) | ||
| namespace, name, err := cache.SplitMetaNamespaceKey(key) | ||
| if err != nil { | ||
| log.Errorf("found ApisixConsumer resource with invalid meta namespace key %s: %s", key, err) | ||
| return err | ||
| } | ||
|
|
||
| ac, err := c.controller.apisixConsumerLister.ApisixConsumers(namespace).Get(name) | ||
| if err != nil { | ||
| if !k8serrors.IsNotFound(err) { | ||
| log.Errorf("failed to get ApisixConsumer %s: %s", key, err) | ||
| return err | ||
| } | ||
| if ev.Type != types.EventDelete { | ||
| log.Warnf("ApisixConsumer %s was deleted before it can be delivered", key) | ||
| // Don't need to retry. | ||
| return nil | ||
| } | ||
| } | ||
| if ev.Type == types.EventDelete { | ||
| if ac != nil { | ||
| // We still find the resource while we are processing the DELETE event, | ||
| // that means object with same namespace and name was created, discarding | ||
| // this stale DELETE event. | ||
| log.Warnf("discard the stale ApisixConsumer delete event since the %s exists", key) | ||
| return nil | ||
| } | ||
| ac = ev.Tombstone.(*configv2alpha1.ApisixConsumer) | ||
| } | ||
|
|
||
| consumer, err := c.controller.translator.TranslateApisixConsumer(ac) | ||
| if err != nil { | ||
| log.Errorw("failed to translate ApisixConsumer", | ||
| zap.Error(err), | ||
| zap.Any("ApisixConsumer", ac), | ||
| ) | ||
| c.controller.recorderEvent(ac, corev1.EventTypeWarning, _resourceSyncAborted, err) | ||
| c.controller.recordStatus(ac, _resourceSyncAborted, err, metav1.ConditionFalse) | ||
| return err | ||
| } | ||
| log.Debug("got consumer object from ApisixConsumer", | ||
| zap.Any("consumer", consumer), | ||
| zap.Any("ApisixConsumer", ac), | ||
| ) | ||
|
|
||
| if err := c.controller.syncConsumer(ctx, consumer, ev.Type); err != nil { | ||
| log.Errorw("failed to sync Consumer to APISIX", | ||
| zap.Error(err), | ||
| zap.Any("consumer", consumer), | ||
| ) | ||
| c.controller.recorderEvent(ac, corev1.EventTypeWarning, _resourceSyncAborted, err) | ||
| c.controller.recordStatus(ac, _resourceSyncAborted, err, metav1.ConditionFalse) | ||
| return err | ||
| } | ||
|
|
||
| c.controller.recorderEvent(ac, corev1.EventTypeNormal, _resourceSynced, nil) | ||
| return nil | ||
| } | ||
|
|
||
| func (c *apisixConsumerController) handleSyncErr(obj interface{}, err error) { | ||
| if err == nil { | ||
| c.workqueue.Forget(obj) | ||
| return | ||
| } | ||
| log.Warnw("sync ApisixConsumer failed, will retry", | ||
| zap.Any("object", obj), | ||
| zap.Error(err), | ||
| ) | ||
| c.workqueue.AddRateLimited(obj) | ||
| } | ||
|
|
||
| func (c *apisixConsumerController) onAdd(obj interface{}) { | ||
| key, err := cache.MetaNamespaceKeyFunc(obj) | ||
| if err != nil { | ||
| log.Errorf("found ApisixConsumer resource with bad meta namespace key: %s", err) | ||
| return | ||
| } | ||
| if !c.controller.namespaceWatching(key) { | ||
| return | ||
| } | ||
| log.Debugw("ApisixConsumer add event arrived", | ||
| zap.Any("object", obj), | ||
| ) | ||
|
|
||
| c.workqueue.AddRateLimited(&types.Event{ | ||
| Type: types.EventAdd, | ||
| Object: key, | ||
| }) | ||
| } | ||
|
|
||
| func (c *apisixConsumerController) onUpdate(oldObj, newObj interface{}) { | ||
| prev := oldObj.(*configv2alpha1.ApisixConsumer) | ||
| curr := newObj.(*configv2alpha1.ApisixConsumer) | ||
| if prev.ResourceVersion >= curr.ResourceVersion { | ||
| return | ||
| } | ||
| key, err := cache.MetaNamespaceKeyFunc(newObj) | ||
| if err != nil { | ||
| log.Errorf("found ApisixConsumer resource with bad meta namespace key: %s", err) | ||
| return | ||
| } | ||
| if !c.controller.namespaceWatching(key) { | ||
| return | ||
| } | ||
| log.Debugw("ApisixConsumer 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 *apisixConsumerController) onDelete(obj interface{}) { | ||
| ac, ok := obj.(*configv2alpha1.ApisixConsumer) | ||
| if !ok { | ||
| tombstone, ok := obj.(cache.DeletedFinalStateUnknown) | ||
| if !ok { | ||
| return | ||
| } | ||
| ac = tombstone.Obj.(*configv2alpha1.ApisixConsumer) | ||
| } | ||
|
|
||
| key, err := cache.DeletionHandlingMetaNamespaceKeyFunc(obj) | ||
| if err != nil { | ||
| log.Errorf("found ApisixConsumer resource with bad meta namespace key: %s", err) | ||
| return | ||
| } | ||
| if !c.controller.namespaceWatching(key) { | ||
| return | ||
| } | ||
| log.Debugw("ApisixConsumer delete event arrived", | ||
| zap.Any("final state", ac), | ||
| ) | ||
| c.workqueue.AddRateLimited(&types.Event{ | ||
| Type: types.EventDelete, | ||
| Object: key, | ||
| Tombstone: ac, | ||
| }) | ||
| } |
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