/
pullsecret_controller.go
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/
pullsecret_controller.go
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package pullsecret
// Copyright (c) Microsoft Corporation.
// Licensed under the Apache License 2.0.
import (
"encoding/json"
"github.com/sirupsen/logrus"
corev1 "k8s.io/api/core/v1"
v1 "k8s.io/api/core/v1"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/util/retry"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/event"
"sigs.k8s.io/controller-runtime/pkg/predicate"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
"github.com/Azure/ARO-RP/pkg/operator"
arov1alpha1 "github.com/Azure/ARO-RP/pkg/operator/apis/aro.openshift.io/v1alpha1"
aroclient "github.com/Azure/ARO-RP/pkg/operator/clientset/versioned/typed/aro.openshift.io/v1alpha1"
"github.com/Azure/ARO-RP/pkg/operator/controllers"
"github.com/Azure/ARO-RP/pkg/util/pullsecret"
)
var pullSecretName = types.NamespacedName{Name: "pull-secret", Namespace: "openshift-config"}
// PullSecretReconciler reconciles a Cluster object
type PullSecretReconciler struct {
kubernetescli kubernetes.Interface
arocli aroclient.AroV1alpha1Interface
log *logrus.Entry
}
func NewReconciler(log *logrus.Entry, kubernetescli kubernetes.Interface, arocli aroclient.AroV1alpha1Interface) *PullSecretReconciler {
return &PullSecretReconciler{
log: log,
kubernetescli: kubernetescli,
arocli: arocli,
}
}
// Reconcile will make sure that the ACR part of the pull secret is correct. The
// conditions under which Reconcile is called are slightly unusual and are as
// follows:
// * If the Cluster object changes, we'll see the *Cluster* object requested.
// * If a Secret object owned by the Cluster object changes (e.g., but not
// limited to, the configuration Secret, we'll see the *Cluster* object
// requested).
// * If the pull Secret object (which is not owned by the Cluster object)
// changes, we'll see the pull Secret object requested.
func (r *PullSecretReconciler) Reconcile(request ctrl.Request) (ctrl.Result, error) {
if request.NamespacedName != pullSecretName &&
request.Name != arov1alpha1.SingletonClusterName {
return reconcile.Result{}, nil
}
mysec, err := r.kubernetescli.CoreV1().Secrets(operator.Namespace).Get(operator.SecretName, metav1.GetOptions{})
if err != nil {
return reconcile.Result{}, err
}
return reconcile.Result{}, retry.RetryOnConflict(retry.DefaultRetry, func() error {
ps, isCreate, err := r.pullsecret()
if err != nil {
return err
}
if ps.Data == nil {
ps.Data = map[string][]byte{}
}
// validate
if !json.Valid(ps.Data[v1.DockerConfigJsonKey]) {
r.log.Info("pull secret is not valid json - recreating")
delete(ps.Data, v1.DockerConfigJsonKey)
}
pullsec, changed, err := pullsecret.Merge(string(ps.Data[corev1.DockerConfigJsonKey]), string(mysec.Data[v1.DockerConfigJsonKey]))
if err != nil {
return err
}
// repair Secret type
if ps.Type != v1.SecretTypeDockerConfigJson {
ps = &v1.Secret{
ObjectMeta: metav1.ObjectMeta{
Name: pullSecretName.Name,
Namespace: pullSecretName.Namespace,
},
Type: v1.SecretTypeDockerConfigJson,
Data: map[string][]byte{},
}
isCreate = true
r.log.Info("pull secret has the wrong type - recreating")
// unfortunately the type field is immutable.
err = r.kubernetescli.CoreV1().Secrets(ps.Namespace).Delete(ps.Name, nil)
if err != nil {
return err
}
// there is a small risk of crashing here: if that happens, we will
// restart, create a new pull secret, and will have dropped the rest
// of the customer's pull secret on the floor :-(
}
if !isCreate && !changed {
return nil
}
ps.Data[corev1.DockerConfigJsonKey] = []byte(pullsec)
if isCreate {
r.log.Info("re-creating pull secret")
_, err = r.kubernetescli.CoreV1().Secrets(ps.Namespace).Create(ps)
} else {
r.log.Info("updating pull secret")
_, err = r.kubernetescli.CoreV1().Secrets(ps.Namespace).Update(ps)
}
return err
})
}
func (r *PullSecretReconciler) pullsecret() (*v1.Secret, bool, error) {
ps, err := r.kubernetescli.CoreV1().Secrets(pullSecretName.Namespace).Get(pullSecretName.Name, metav1.GetOptions{})
if apierrors.IsNotFound(err) {
return &v1.Secret{
ObjectMeta: metav1.ObjectMeta{
Name: pullSecretName.Name,
Namespace: pullSecretName.Namespace,
},
Type: v1.SecretTypeDockerConfigJson,
}, true, nil
}
if err != nil {
return nil, false, err
}
return ps, false, nil
}
func triggerReconcile(secret *corev1.Secret) bool {
return (secret.Name == pullSecretName.Name && secret.Namespace == pullSecretName.Namespace) ||
(secret.Name == operator.SecretName && secret.Namespace == operator.Namespace)
}
// SetupWithManager setup our mananger
func (r *PullSecretReconciler) SetupWithManager(mgr ctrl.Manager) error {
isPullSecret := predicate.Funcs{
UpdateFunc: func(e event.UpdateEvent) bool {
_, ok := e.ObjectOld.(*arov1alpha1.Cluster)
if ok {
return true
}
secret, ok := e.ObjectOld.(*corev1.Secret)
return ok && triggerReconcile(secret)
},
CreateFunc: func(e event.CreateEvent) bool {
_, ok := e.Object.(*arov1alpha1.Cluster)
if ok {
return true
}
secret, ok := e.Object.(*corev1.Secret)
return ok && triggerReconcile(secret)
},
DeleteFunc: func(e event.DeleteEvent) bool {
_, ok := e.Object.(*arov1alpha1.Cluster)
if ok {
return true
}
secret, ok := e.Object.(*corev1.Secret)
return ok && triggerReconcile(secret)
},
}
return ctrl.NewControllerManagedBy(mgr).
For(&arov1alpha1.Cluster{}).
For(&v1.Secret{}).
Owns(&v1.Secret{}).
WithEventFilter(isPullSecret).
Named(controllers.PullSecretControllerName).
Complete(r)
}