/
secret.go
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/
secret.go
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// 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"
"fmt"
"sync"
"time"
"go.uber.org/zap"
corev1 "k8s.io/api/core/v1"
k8serrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/util/runtime"
"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/seven/state"
"github.com/apache/apisix-ingress-controller/pkg/types"
apisixv1 "github.com/apache/apisix-ingress-controller/pkg/types/apisix/v1"
)
type secretController struct {
controller *Controller
workqueue workqueue.RateLimitingInterface
workers int
}
func (c *Controller) newSecretController() *secretController {
ctl := &secretController{
controller: c,
workqueue: workqueue.NewNamedRateLimitingQueue(workqueue.NewItemFastSlowRateLimiter(1*time.Second, 60*time.Second, 5), "Secrets"),
workers: 1,
}
ctl.controller.secretInformer.AddEventHandler(
cache.ResourceEventHandlerFuncs{
AddFunc: ctl.onAdd,
UpdateFunc: ctl.onUpdate,
DeleteFunc: ctl.onDelete,
},
)
return ctl
}
func (c *secretController) run(ctx context.Context) {
log.Info("secret controller started")
defer log.Info("secret controller exited")
if ok := cache.WaitForCacheSync(ctx.Done(), c.controller.secretInformer.HasSynced); !ok {
log.Error("informers sync failed")
return
}
handler := func() {
for {
obj, shutdown := c.workqueue.Get()
if shutdown {
return
}
err := func(obj interface{}) error {
defer c.workqueue.Done(obj)
event := obj.(*types.Event)
if key, ok := event.Object.(string); !ok {
c.workqueue.Forget(obj)
return fmt.Errorf("expected Secret in workqueue but got %#v", obj)
} else {
if err := c.sync(ctx, event); err != nil {
c.workqueue.AddRateLimited(obj)
log.Errorf("sync secret with ssl %s failed", key)
return fmt.Errorf("error syncing '%s': %s", key, err.Error())
}
c.workqueue.Forget(obj)
return nil
}
}(obj)
if err != nil {
runtime.HandleError(err)
}
}
}
for i := 0; i < c.workers; i++ {
go handler()
}
<-ctx.Done()
c.workqueue.ShutDown()
}
func (c *secretController) sync(ctx context.Context, ev *types.Event) error {
key := ev.Object.(string)
namespace, name, err := cache.SplitMetaNamespaceKey(key)
if err != nil {
log.Errorf("invalid resource key: %s", key)
return err
}
sec, err := c.controller.secretLister.Secrets(namespace).Get(name)
secretMapkey := namespace + "_" + name
if err != nil {
if !k8serrors.IsNotFound(err) {
log.Errorw("failed to get Secret",
zap.String("key", secretMapkey),
zap.Error(err),
)
return err
}
if ev.Type != types.EventDelete {
log.Warnw("Secret was deleted before it can be delivered",
zap.String("key", secretMapkey),
)
return nil
}
}
if ev.Type == types.EventDelete {
if sec != 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.Warnw("discard the stale secret delete event since the resource still exists",
zap.String("key", secretMapkey),
)
return nil
}
sec = ev.Tombstone.(*corev1.Secret)
}
// sync SSL in APISIX which is store in secretSSLMap
// FixMe Need to update the status of CRD ApisixTls
ssls, ok := secretSSLMap.Load(secretMapkey)
if ok {
sslMap := ssls.(*sync.Map)
sslMap.Range(func(_, v interface{}) bool {
ssl := v.(*apisixv1.Ssl)
// sync ssl
ssl.Cert = string(sec.Data["cert"])
ssl.Key = string(sec.Data["key"])
ssl.FullName = ssl.ID
return state.SyncSsl(ssl, ev.Type.String()) == nil
})
}
return err
}
func (c *secretController) onAdd(obj interface{}) {
key, err := cache.MetaNamespaceKeyFunc(obj)
if err != nil {
log.Errorf("found secret object with bad namespace/name: %s, ignore it", err)
return
}
if !c.controller.namespaceWatching(key) {
return
}
c.workqueue.AddRateLimited(&types.Event{
Type: types.EventAdd,
Object: key,
})
}
func (c *secretController) onUpdate(prev, curr interface{}) {
prevSec := prev.(*corev1.Secret)
currSec := curr.(*corev1.Secret)
if prevSec.GetResourceVersion() == currSec.GetResourceVersion() {
return
}
key, err := cache.MetaNamespaceKeyFunc(currSec)
if err != nil {
log.Errorf("found secrets object with bad namespace/name: %s, ignore it", err)
return
}
if !c.controller.namespaceWatching(key) {
return
}
c.workqueue.AddRateLimited(&types.Event{
Type: types.EventUpdate,
Object: key,
})
}
func (c *secretController) onDelete(obj interface{}) {
sec, ok := obj.(*corev1.Secret)
if !ok {
tombstone, ok := obj.(cache.DeletedFinalStateUnknown)
if !ok {
log.Errorf("found secrets: %+v in bad tombstone state", obj)
return
}
sec = tombstone.Obj.(*corev1.Secret)
}
key, err := cache.DeletionHandlingMetaNamespaceKeyFunc(obj)
if err != nil {
log.Errorf("found secret resource with bad meta namesapce key: %s", err)
return
}
// FIXME Refactor Controller.namespaceWatching to just use
// namespace after all controllers use the same way to fetch
// the object.
if !c.controller.namespaceWatching(key) {
return
}
c.workqueue.AddRateLimited(&types.Event{
Type: types.EventDelete,
Object: key,
Tombstone: sec,
})
}