| // 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" |
| |
| "github.com/apache/apisix-ingress-controller/pkg/apisix" |
| 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 apisixClusterConfigController struct { |
| controller *Controller |
| workqueue workqueue.RateLimitingInterface |
| workers int |
| } |
| |
| func (c *Controller) newApisixClusterConfigController() *apisixClusterConfigController { |
| ctl := &apisixClusterConfigController{ |
| controller: c, |
| workqueue: workqueue.NewNamedRateLimitingQueue(workqueue.NewItemFastSlowRateLimiter(time.Second, 60*time.Second, 5), "ApisixClusterConfig"), |
| workers: 1, |
| } |
| c.apisixClusterConfigInformer.AddEventHandler( |
| cache.ResourceEventHandlerFuncs{ |
| AddFunc: ctl.onAdd, |
| UpdateFunc: ctl.onUpdate, |
| DeleteFunc: ctl.onDelete, |
| }, |
| ) |
| return ctl |
| } |
| |
| func (c *apisixClusterConfigController) run(ctx context.Context) { |
| log.Info("ApisixClusterConfig controller started") |
| defer log.Info("ApisixClusterConfig controller exited") |
| defer c.workqueue.ShutDown() |
| |
| if ok := cache.WaitForCacheSync(ctx.Done(), c.controller.apisixClusterConfigInformer.HasSynced); !ok { |
| log.Error("cache sync failed") |
| return |
| } |
| for i := 0; i < c.workers; i++ { |
| go c.runWorker(ctx) |
| } |
| <-ctx.Done() |
| } |
| |
| func (c *apisixClusterConfigController) 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 *apisixClusterConfigController) sync(ctx context.Context, ev *types.Event) error { |
| key := ev.Object.(string) |
| _, name, err := cache.SplitMetaNamespaceKey(key) |
| if err != nil { |
| log.Errorf("found ApisixClusterConfig resource with invalid meta key %s: %s", key, err) |
| return err |
| } |
| acc, err := c.controller.apisixClusterConfigLister.Get(name) |
| if err != nil { |
| if !k8serrors.IsNotFound(err) { |
| log.Errorf("failed to get ApisixClusterConfig %s: %s", key, err) |
| return err |
| } |
| if ev.Type != types.EventDelete { |
| log.Warnf("ApisixClusterConfig %s was deleted before it can be delivered", key) |
| return nil |
| } |
| } |
| if ev.Type == types.EventDelete { |
| if acc != 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 ApisixClusterConfig delete event since the %s exists", key) |
| return nil |
| } |
| acc = ev.Tombstone.(*configv2alpha1.ApisixClusterConfig) |
| } |
| |
| // Currently we don't handle multiple cluster, so only process |
| // the default apisix cluster. |
| if acc.Name != c.controller.cfg.APISIX.DefaultClusterName { |
| log.Infow("ignore non-default apisix cluster config", |
| zap.String("default_cluster_name", c.controller.cfg.APISIX.DefaultClusterName), |
| zap.Any("ApisixClusterConfig", acc), |
| ) |
| return nil |
| } |
| // Cluster delete is dangerous. |
| // TODO handle delete? |
| if ev.Type == types.EventDelete { |
| log.Error("ApisixClusterConfig delete event for default apisix cluster will be ignored") |
| return nil |
| } |
| |
| if acc.Spec.Admin != nil { |
| clusterOpts := &apisix.ClusterOptions{ |
| Name: acc.Name, |
| BaseURL: acc.Spec.Admin.BaseURL, |
| AdminKey: acc.Spec.Admin.AdminKey, |
| } |
| log.Infow("updating cluster", |
| zap.Any("opts", clusterOpts), |
| ) |
| // TODO we may first call AddCluster. |
| // Since now we already have the default cluster, we just call UpdateCluster. |
| if err := c.controller.apisix.UpdateCluster(clusterOpts); err != nil { |
| log.Errorw("failed to update cluster", |
| zap.String("cluster_name", acc.Name), |
| zap.Error(err), |
| zap.Any("opts", clusterOpts), |
| ) |
| c.controller.recorderEvent(acc, corev1.EventTypeWarning, _resourceSyncAborted, err) |
| c.controller.recordStatus(acc, _resourceSyncAborted, err, metav1.ConditionFalse) |
| return err |
| } |
| } |
| |
| globalRule, err := c.controller.translator.TranslateClusterConfig(acc) |
| if err != nil { |
| // TODO add status |
| log.Errorw("failed to translate ApisixClusterConfig", |
| zap.Error(err), |
| zap.String("key", key), |
| zap.Any("object", acc), |
| ) |
| c.controller.recorderEvent(acc, corev1.EventTypeWarning, _resourceSyncAborted, err) |
| c.controller.recordStatus(acc, _resourceSyncAborted, err, metav1.ConditionFalse) |
| return err |
| } |
| log.Debugw("translated global_rule", |
| zap.Any("object", globalRule), |
| ) |
| |
| // TODO multiple cluster support |
| if ev.Type == types.EventAdd { |
| _, err = c.controller.apisix.Cluster(acc.Name).GlobalRule().Create(ctx, globalRule) |
| } else { |
| _, err = c.controller.apisix.Cluster(acc.Name).GlobalRule().Update(ctx, globalRule) |
| } |
| if err != nil { |
| log.Errorw("failed to reflect global_rule changes to apisix cluster", |
| zap.Any("global_rule", globalRule), |
| zap.Any("cluster", acc.Name), |
| ) |
| c.controller.recorderEvent(acc, corev1.EventTypeWarning, _resourceSyncAborted, err) |
| c.controller.recordStatus(acc, _resourceSyncAborted, err, metav1.ConditionFalse) |
| return err |
| } |
| c.controller.recorderEvent(acc, corev1.EventTypeNormal, _resourceSynced, nil) |
| c.controller.recordStatus(acc, _resourceSynced, nil, metav1.ConditionTrue) |
| return nil |
| } |
| |
| func (c *apisixClusterConfigController) handleSyncErr(obj interface{}, err error) { |
| if err == nil { |
| c.workqueue.Forget(obj) |
| return |
| } |
| log.Warnw("sync ApisixClusterConfig failed, will retry", |
| zap.Any("object", obj), |
| zap.Error(err), |
| ) |
| c.workqueue.AddRateLimited(obj) |
| } |
| |
| func (c *apisixClusterConfigController) onAdd(obj interface{}) { |
| key, err := cache.MetaNamespaceKeyFunc(obj) |
| if err != nil { |
| log.Errorf("found ApisixClusterConfig resource with bad meta key: %s", err.Error()) |
| return |
| } |
| log.Debugw("ApisixClusterConfig add event arrived", |
| zap.String("key", key), |
| zap.Any("object", obj), |
| ) |
| |
| c.workqueue.AddRateLimited(&types.Event{ |
| Type: types.EventAdd, |
| Object: key, |
| }) |
| } |
| |
| func (c *apisixClusterConfigController) onUpdate(oldObj, newObj interface{}) { |
| prev := oldObj.(*configv2alpha1.ApisixClusterConfig) |
| curr := newObj.(*configv2alpha1.ApisixClusterConfig) |
| if prev.ResourceVersion >= curr.ResourceVersion { |
| return |
| } |
| key, err := cache.MetaNamespaceKeyFunc(newObj) |
| if err != nil { |
| log.Errorf("found ApisixClusterConfig with bad meta key: %s", err) |
| return |
| } |
| log.Debugw("ApisixClusterConfig 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 *apisixClusterConfigController) onDelete(obj interface{}) { |
| acc, ok := obj.(*configv2alpha1.ApisixClusterConfig) |
| if !ok { |
| tombstone, ok := obj.(*cache.DeletedFinalStateUnknown) |
| if !ok { |
| return |
| } |
| acc = tombstone.Obj.(*configv2alpha1.ApisixClusterConfig) |
| } |
| |
| key, err := cache.DeletionHandlingMetaNamespaceKeyFunc(obj) |
| if err != nil { |
| log.Errorf("found ApisixClusterConfig resource with bad meta key: %s", err) |
| return |
| } |
| log.Debugw("ApisixClusterConfig delete event arrived", |
| zap.Any("final state", acc), |
| ) |
| c.workqueue.AddRateLimited(&types.Event{ |
| Type: types.EventDelete, |
| Object: key, |
| Tombstone: acc, |
| }) |
| } |