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secretcontroller.go
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secretcontroller.go
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package controller
import (
"context"
"encoding/json"
"time"
"runtime/debug"
"github.com/argoproj/argo-cd/common"
"github.com/argoproj/argo-cd/pkg/apis/application/v1alpha1"
"github.com/argoproj/argo-cd/reposerver"
"github.com/argoproj/argo-cd/reposerver/repository"
"github.com/argoproj/argo-cd/util"
"github.com/argoproj/argo-cd/util/db"
log "github.com/sirupsen/logrus"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/fields"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/selection"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/informers"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/tools/cache"
"k8s.io/client-go/util/workqueue"
)
type SecretController struct {
kubeClient kubernetes.Interface
secretQueue workqueue.RateLimitingInterface
secretInformer cache.SharedIndexInformer
repoClientset reposerver.Clientset
namespace string
}
func (ctrl *SecretController) Run(ctx context.Context) {
go ctrl.secretInformer.Run(ctx.Done())
if !cache.WaitForCacheSync(ctx.Done(), ctrl.secretInformer.HasSynced) {
log.Error("Timed out waiting for caches to sync")
return
}
go wait.Until(func() {
for ctrl.processSecret() {
}
}, time.Second, ctx.Done())
}
func (ctrl *SecretController) processSecret() (processNext bool) {
secretKey, shutdown := ctrl.secretQueue.Get()
if shutdown {
processNext = false
return
} else {
processNext = true
}
defer func() {
if r := recover(); r != nil {
log.Errorf("Recovered from panic: %+v\n%s", r, debug.Stack())
}
ctrl.secretQueue.Done(secretKey)
}()
obj, exists, err := ctrl.secretInformer.GetIndexer().GetByKey(secretKey.(string))
if err != nil {
log.Errorf("Failed to get secret '%s' from informer index: %+v", secretKey, err)
return
}
if !exists {
// This happens after secret was deleted, but the work queue still had an entry for it.
return
}
secret, ok := obj.(*corev1.Secret)
if !ok {
log.Warnf("Key '%s' in index is not an secret", secretKey)
return
}
if secret.Labels[common.LabelKeySecretType] == common.SecretTypeCluster {
cluster := db.SecretToCluster(secret)
ctrl.updateState(secret, ctrl.getClusterState(cluster))
} else if secret.Labels[common.LabelKeySecretType] == common.SecretTypeRepository {
repo := db.SecretToRepo(secret)
ctrl.updateState(secret, ctrl.getRepoConnectionState(repo))
}
return
}
func (ctrl *SecretController) getRepoConnectionState(repo *v1alpha1.Repository) v1alpha1.ConnectionState {
state := v1alpha1.ConnectionState{
ModifiedAt: repo.ConnectionState.ModifiedAt,
Status: v1alpha1.ConnectionStatusUnknown,
}
closer, client, err := ctrl.repoClientset.NewRepositoryClient()
if err != nil {
log.Errorf("Unable to create repository client: %v", err)
return state
}
defer util.Close(closer)
_, err = client.ListDir(context.Background(), &repository.ListDirRequest{Repo: repo, Path: ".gitignore"})
if err == nil {
state.Status = v1alpha1.ConnectionStatusSuccessful
} else {
state.Status = v1alpha1.ConnectionStatusFailed
state.Message = err.Error()
}
return state
}
func (ctrl *SecretController) getClusterState(cluster *v1alpha1.Cluster) v1alpha1.ConnectionState {
state := v1alpha1.ConnectionState{
ModifiedAt: cluster.ConnectionState.ModifiedAt,
Status: v1alpha1.ConnectionStatusUnknown,
}
kubeClientset, err := kubernetes.NewForConfig(cluster.RESTConfig())
if err == nil {
_, err = kubeClientset.Discovery().ServerVersion()
}
if err == nil {
state.Status = v1alpha1.ConnectionStatusSuccessful
} else {
state.Status = v1alpha1.ConnectionStatusFailed
state.Message = err.Error()
}
return state
}
func (ctrl *SecretController) updateState(secret *corev1.Secret, state v1alpha1.ConnectionState) {
annotationsPatch := make(map[string]string)
for key, value := range db.AnnotationsFromConnectionState(&state) {
if secret.Annotations[key] != value {
annotationsPatch[key] = value
}
}
if len(annotationsPatch) > 0 {
annotationsPatch[common.AnnotationConnectionModifiedAt] = metav1.Now().Format(time.RFC3339)
patchData, err := json.Marshal(map[string]interface{}{
"metadata": map[string]interface{}{
"annotations": annotationsPatch,
},
})
if err != nil {
log.Warnf("Unable to prepare secret state annotation patch: %v", err)
} else {
_, err := ctrl.kubeClient.CoreV1().Secrets(secret.Namespace).Patch(secret.Name, types.MergePatchType, patchData)
if err != nil {
log.Warnf("Unable to patch secret state annotation: %v", err)
}
}
}
}
func newSecretInformer(client kubernetes.Interface, resyncPeriod time.Duration, namespace string, secretQueue workqueue.RateLimitingInterface) cache.SharedIndexInformer {
informerFactory := informers.NewFilteredSharedInformerFactory(
client,
resyncPeriod,
namespace,
func(options *metav1.ListOptions) {
var req *labels.Requirement
req, err := labels.NewRequirement(common.LabelKeySecretType, selection.In, []string{common.SecretTypeCluster, common.SecretTypeRepository})
if err != nil {
panic(err)
}
options.FieldSelector = fields.Everything().String()
labelSelector := labels.NewSelector().Add(*req)
options.LabelSelector = labelSelector.String()
},
)
informer := informerFactory.Core().V1().Secrets().Informer()
informer.AddEventHandler(
cache.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
key, err := cache.MetaNamespaceKeyFunc(obj)
if err == nil {
secretQueue.Add(key)
}
},
UpdateFunc: func(old, new interface{}) {
key, err := cache.MetaNamespaceKeyFunc(new)
if err == nil {
secretQueue.Add(key)
}
},
},
)
return informer
}
func NewSecretController(kubeClient kubernetes.Interface, repoClientset reposerver.Clientset, resyncPeriod time.Duration, namespace string) *SecretController {
secretQueue := workqueue.NewRateLimitingQueue(workqueue.DefaultControllerRateLimiter())
return &SecretController{
kubeClient: kubeClient,
secretQueue: secretQueue,
secretInformer: newSecretInformer(kubeClient, resyncPeriod, namespace, secretQueue),
namespace: namespace,
repoClientset: repoClientset,
}
}