mirror of
https://github.com/vmware-tanzu/velero.git
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989a1e3ebb
Add filter functions for PeriodicalEnqueueSource. Move BSL's valication frequency check test case to PeriodicalEnqueueSource's test. Signed-off-by: Xun Jiang <jxun@vmware.com>
99 lines
3.2 KiB
Go
99 lines
3.2 KiB
Go
/*
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Copyright the Velero contributors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package kube
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import (
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"context"
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"reflect"
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"time"
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"github.com/sirupsen/logrus"
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"k8s.io/apimachinery/pkg/api/meta"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/apimachinery/pkg/util/wait"
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"k8s.io/client-go/util/workqueue"
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ctrl "sigs.k8s.io/controller-runtime"
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"sigs.k8s.io/controller-runtime/pkg/client"
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"sigs.k8s.io/controller-runtime/pkg/handler"
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"sigs.k8s.io/controller-runtime/pkg/predicate"
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)
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func NewPeriodicalEnqueueSource(logger logrus.FieldLogger, client client.Client, objList client.ObjectList, period time.Duration, filters ...func(object client.Object) bool) *PeriodicalEnqueueSource {
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return &PeriodicalEnqueueSource{
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logger: logger.WithField("resource", reflect.TypeOf(objList).String()),
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Client: client,
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objList: objList,
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period: period,
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filterFuncs: filters,
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}
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}
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// PeriodicalEnqueueSource is an implementation of interface sigs.k8s.io/controller-runtime/pkg/source/Source
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// It reads the specific resources from Kubernetes/cache and enqueues them into the queue to trigger
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// the reconcile logic periodically
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type PeriodicalEnqueueSource struct {
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client.Client
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logger logrus.FieldLogger
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objList client.ObjectList
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period time.Duration
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filterFuncs []func(object client.Object) bool
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}
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func (p *PeriodicalEnqueueSource) Start(ctx context.Context, h handler.EventHandler, q workqueue.RateLimitingInterface, pre ...predicate.Predicate) error {
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go wait.Until(func() {
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p.logger.Debug("enqueueing resources ...")
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if err := p.List(ctx, p.objList); err != nil {
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p.logger.WithError(err).Error("error listing resources")
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return
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}
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if meta.LenList(p.objList) == 0 {
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p.logger.Debug("no resources, skip")
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return
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}
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if err := meta.EachListItem(p.objList, func(object runtime.Object) error {
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obj, ok := object.(metav1.Object)
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if !ok {
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p.logger.Error("%s's type isn't metav1.Object", object.GetObjectKind().GroupVersionKind().String())
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return nil
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}
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for _, filter := range p.filterFuncs {
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if filter != nil {
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if enqueueObj := filter(object.(client.Object)); !enqueueObj {
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p.logger.Debugf("skip enqueue object %s/%s due to filter function.", obj.GetNamespace(), obj.GetName())
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return nil
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}
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}
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}
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q.Add(ctrl.Request{
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NamespacedName: types.NamespacedName{
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Namespace: obj.GetNamespace(),
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Name: obj.GetName(),
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},
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})
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p.logger.Debugf("resource %s/%s enqueued", obj.GetNamespace(), obj.GetName())
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return nil
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}); err != nil {
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p.logger.WithError(err).Error("error enqueueing resources")
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return
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}
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}, p.period, ctx.Done())
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return nil
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}
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