/
refresher_controller.go
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/
refresher_controller.go
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// Copyright © 2021 Banzai Cloud
//
// Licensed 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 controllers
import (
"context"
"time"
"emperror.dev/emperror"
"emperror.dev/errors"
"github.com/cisco-open/operator-tools/pkg/reconciler"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/types"
"logur.dev/logur"
ctrl "sigs.k8s.io/controller-runtime"
ctrlBuilder "sigs.k8s.io/controller-runtime/pkg/builder"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/handler"
"sigs.k8s.io/controller-runtime/pkg/predicate"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
"sigs.k8s.io/controller-runtime/pkg/source"
"github.com/banzaicloud/imps/internal/cron"
"github.com/banzaicloud/imps/pkg/pullsecrets"
)
// RefresherReconciler reconciles a AlertingPolicy object
type RefresherReconciler struct {
client.Client
Log logur.Logger
ErrorHandler emperror.ErrorHandler
ResourceReconciler reconciler.ResourceReconciler
PeriodicReconcileInterval time.Duration
SourceSecrets []types.NamespacedName
TargetSecret types.NamespacedName
}
// +kubebuilder:rbac:groups="",resources=secrets,verbs=get;list;watch;create;update;patch;delete
func (r *RefresherReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
result, err := r.reconcile(ctx, req)
result, err = cron.EnsurePeriodicReconcile(r.PeriodicReconcileInterval, result, err)
if err != nil {
r.ErrorHandler.Handle(err)
}
return result, err
}
func (r *RefresherReconciler) SetupWithManager(mgr ctrl.Manager) error {
builder := ctrl.NewControllerManagedBy(mgr).
For(&corev1.Secret{}, ctrlBuilder.WithPredicates(predicate.GenerationChangedPredicate{})).
Watches(
&source.Kind{Type: &corev1.Secret{}},
handler.EnqueueRequestsFromMapFunc(func(object client.Object) []reconcile.Request {
return r.isMatchingSecret(object)
}))
return builder.Complete(r)
}
func (r *RefresherReconciler) isMatchingSecret(obj client.Object) []ctrl.Request {
secret, ok := obj.(*corev1.Secret)
if !ok {
r.Log.Info("object is not a Secret")
return []ctrl.Request{}
}
reconcileTargetRequest := ctrl.Request{
NamespacedName: r.TargetSecret,
}
secretRef := types.NamespacedName{Namespace: secret.Namespace, Name: secret.Name}
if r.isSourceSecret(secretRef) || r.isTargetSecret(secretRef) {
return []ctrl.Request{reconcileTargetRequest}
}
return []ctrl.Request{}
}
func (r *RefresherReconciler) isSourceSecret(secret types.NamespacedName) bool {
for _, sourceSecret := range r.SourceSecrets {
if sourceSecret.Namespace == secret.Namespace && sourceSecret.Name == secret.Name {
return true
}
}
return false
}
func (r *RefresherReconciler) isTargetSecret(secret types.NamespacedName) bool {
return r.TargetSecret.Namespace == secret.Namespace && r.TargetSecret.Name == secret.Name
}
func (r *RefresherReconciler) reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
logger := logur.WithField(r.Log, "imagepullsecret", req.NamespacedName)
result := ctrl.Result{}
if !r.isSourceSecret(req.NamespacedName) && !r.isTargetSecret(req.NamespacedName) {
return result, nil
}
config := pullsecrets.NewConfigFromSecrets(ctx, r, r.SourceSecrets)
resultingConfig, err := config.ResultingDockerConfig(ctx)
if err != nil {
return result, errors.WithStack(err)
}
pullSecret := resultingConfig.AsSecret(r.TargetSecret.Namespace, r.TargetSecret.Name)
_, err = r.ResourceReconciler.ReconcileResource(pullSecret, reconciler.StatePresent)
if err != nil {
return result, err
}
if err := resultingConfig.AsError(); err != nil {
for secret, status := range resultingConfig.AsStatus() {
if status != pullsecrets.SourceSecretStatus {
logger.Warn("secret failed to render", map[string]interface{}{
"source_secret": secret,
"reason": status,
})
}
}
return result, err
}
logger.Info("successfully reconciled secret", map[string]interface{}{
"expiration": resultingConfig.Expiration,
})
return result, nil
}