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feat: support gateway API HTTPRoute (#1037)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,216 @@ | ||
| // 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" | ||
| k8serrors "k8s.io/apimachinery/pkg/api/errors" | ||
| "k8s.io/client-go/tools/cache" | ||
| "k8s.io/client-go/util/workqueue" | ||
| gatewayv1alpha2 "sigs.k8s.io/gateway-api/apis/v1alpha2" | ||
|
|
||
| "github.com/apache/apisix-ingress-controller/pkg/kube/translation" | ||
| "github.com/apache/apisix-ingress-controller/pkg/log" | ||
| "github.com/apache/apisix-ingress-controller/pkg/types" | ||
| ) | ||
|
|
||
| type gatewayHTTPRouteController struct { | ||
| controller *Controller | ||
| workqueue workqueue.RateLimitingInterface | ||
| workers int | ||
| } | ||
|
|
||
| func (c *Controller) newGatewayHTTPRouteController() *gatewayHTTPRouteController { | ||
| ctrl := &gatewayHTTPRouteController{ | ||
| controller: c, | ||
| workqueue: workqueue.NewNamedRateLimitingQueue(workqueue.NewItemFastSlowRateLimiter(1*time.Second, 60*time.Second, 5), "GatewayHTTPRoute"), | ||
| workers: 1, | ||
| } | ||
|
|
||
| ctrl.controller.gatewayHttpRouteInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{ | ||
| AddFunc: ctrl.onAdd, | ||
| UpdateFunc: ctrl.onUpdate, | ||
| DeleteFunc: ctrl.OnDelete, | ||
| }) | ||
| return ctrl | ||
| } | ||
|
|
||
| func (c *gatewayHTTPRouteController) run(ctx context.Context) { | ||
| log.Info("gateway HTTPRoute controller started") | ||
| defer log.Info("gateway HTTPRoute controller exited") | ||
| defer c.workqueue.ShutDown() | ||
|
|
||
| if !cache.WaitForCacheSync(ctx.Done(), c.controller.gatewayHttpRouteInformer.HasSynced) { | ||
| log.Error("sync Gateway HTTPRoute cache failed") | ||
| return | ||
| } | ||
|
|
||
| for i := 0; i < c.workers; i++ { | ||
| go c.runWorker(ctx) | ||
| } | ||
| <-ctx.Done() | ||
| } | ||
|
|
||
| func (c *gatewayHTTPRouteController) 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 *gatewayHTTPRouteController) sync(ctx context.Context, ev *types.Event) error { | ||
| key := ev.Object.(string) | ||
| namespace, name, err := cache.SplitMetaNamespaceKey(key) | ||
| if err != nil { | ||
| log.Errorw("found Gateway HTTPRoute resource with invalid key", | ||
| zap.Error(err), | ||
| zap.String("key", key), | ||
| ) | ||
| return err | ||
| } | ||
|
|
||
| httpRoute, err := c.controller.gatewayHttpRouteLister.HTTPRoutes(namespace).Get(name) | ||
| if err != nil { | ||
| if !k8serrors.IsNotFound(err) { | ||
| log.Errorw("failed to get Gateway HTTPRoute", | ||
| zap.Error(err), | ||
| zap.String("key", key), | ||
| ) | ||
| return err | ||
| } | ||
| if ev.Type != types.EventDelete { | ||
| log.Warnw("Gateway HTTPRoute was deleted before process", | ||
| zap.String("key", key), | ||
| ) | ||
| // Don't need to retry. | ||
| return nil | ||
| } | ||
| } | ||
|
|
||
| if ev.Type == types.EventDelete { | ||
| if httpRoute != 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 Gateway delete event since the %s exists", key) | ||
| return nil | ||
| } | ||
| httpRoute = ev.Tombstone.(*gatewayv1alpha2.HTTPRoute) | ||
| } | ||
|
|
||
| tctx, err := c.controller.translator.TranslateGatewayHTTPRouteV1Alpha2(httpRoute) | ||
|
|
||
| if err != nil { | ||
| log.Errorw("failed to translate gateway HTTPRoute", | ||
| zap.Error(err), | ||
| zap.Any("object", httpRoute), | ||
| ) | ||
| return err | ||
| } | ||
|
|
||
| log.Debugw("translated HTTPRoute", | ||
| zap.Any("routes", tctx.Routes), | ||
| zap.Any("upstreams", tctx.Upstreams), | ||
| ) | ||
| m := &manifest{ | ||
| routes: tctx.Routes, | ||
| upstreams: tctx.Upstreams, | ||
| } | ||
|
|
||
| var ( | ||
| added *manifest | ||
| updated *manifest | ||
| deleted *manifest | ||
| ) | ||
|
|
||
| if ev.Type == types.EventDelete { | ||
| deleted = m | ||
| } else if ev.Type == types.EventAdd { | ||
| added = m | ||
| } else { | ||
| var oldCtx *translation.TranslateContext | ||
| oldObj := ev.OldObject.(*gatewayv1alpha2.HTTPRoute) | ||
| oldCtx, err = c.controller.translator.TranslateGatewayHTTPRouteV1Alpha2(oldObj) | ||
| if err != nil { | ||
| log.Errorw("failed to translate old HTTPRoute", | ||
| zap.String("version", oldObj.APIVersion), | ||
| zap.String("event_type", "update"), | ||
| zap.Any("HTTPRoute", oldObj), | ||
| zap.Error(err), | ||
| ) | ||
| return err | ||
| } | ||
|
|
||
| om := &manifest{ | ||
| routes: oldCtx.Routes, | ||
| upstreams: oldCtx.Upstreams, | ||
| } | ||
| added, updated, deleted = m.diff(om) | ||
| } | ||
|
|
||
| return c.controller.syncManifests(ctx, added, updated, deleted) | ||
| } | ||
|
|
||
| func (c *gatewayHTTPRouteController) handleSyncErr(obj interface{}, err error) { | ||
| if err == nil { | ||
| c.workqueue.Forget(obj) | ||
| c.controller.MetricsCollector.IncrSyncOperation("gateway_httproute", "success") | ||
| return | ||
| } | ||
| event := obj.(*types.Event) | ||
| if k8serrors.IsNotFound(err) && event.Type != types.EventDelete { | ||
| log.Infow("sync gateway HTTPRoute but not found, ignore", | ||
| zap.String("event_type", event.Type.String()), | ||
| zap.String("HTTPRoute ", event.Object.(string)), | ||
| ) | ||
| c.workqueue.Forget(event) | ||
| return | ||
| } | ||
| log.Warnw("sync gateway HTTPRoute failed, will retry", | ||
| zap.Any("object", obj), | ||
| zap.Error(err), | ||
| ) | ||
| c.workqueue.AddRateLimited(obj) | ||
| c.controller.MetricsCollector.IncrSyncOperation("gateway_httproute", "failure") | ||
| } | ||
|
|
||
| func (c *gatewayHTTPRouteController) onAdd(obj interface{}) { | ||
| key, err := cache.MetaNamespaceKeyFunc(obj) | ||
| if err != nil { | ||
| log.Errorf("found gateway HTTPRoute resource with bad meta namespace key: %s", err) | ||
| return | ||
| } | ||
| if !c.controller.isWatchingNamespace(key) { | ||
| return | ||
| } | ||
| log.Debugw("gateway HTTPRoute add event arrived", | ||
| zap.Any("object", obj), | ||
| ) | ||
|
|
||
| c.workqueue.Add(&types.Event{ | ||
| Type: types.EventAdd, | ||
| Object: key, | ||
| }) | ||
| } | ||
| func (c *gatewayHTTPRouteController) onUpdate(oldObj, newObj interface{}) {} | ||
| func (c *gatewayHTTPRouteController) OnDelete(obj interface{}) {} |
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