/
policy.go
161 lines (139 loc) · 5.17 KB
/
policy.go
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package addons
import (
"context"
"os"
"strings"
"sync"
k8sdepwatches "github.com/stolostron/kubernetes-dependency-watches/client"
corev1 "k8s.io/api/core/v1"
"k8s.io/client-go/dynamic"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/rest"
"k8s.io/klog/v2"
policyv1 "open-cluster-management.io/governance-policy-propagator/api/v1"
automationctrl "open-cluster-management.io/governance-policy-propagator/controllers/automation"
encryptionkeysctrl "open-cluster-management.io/governance-policy-propagator/controllers/encryptionkeys"
metricsctrl "open-cluster-management.io/governance-policy-propagator/controllers/policymetrics"
policysetctrl "open-cluster-management.io/governance-policy-propagator/controllers/policyset"
propagatorctrl "open-cluster-management.io/governance-policy-propagator/controllers/propagator"
rootpolicystatusctrl "open-cluster-management.io/governance-policy-propagator/controllers/rootpolicystatus"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/builder"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller"
"sigs.k8s.io/controller-runtime/pkg/event"
"sigs.k8s.io/controller-runtime/pkg/predicate"
)
func SetupPolicyWithManager(ctx context.Context, mgr ctrl.Manager, kubeconfig *rest.Config,
kubeClient kubernetes.Interface, dynamicClient dynamic.Interface) error {
dynamicWatcherReconciler, _ := k8sdepwatches.NewControllerRuntimeSource()
dynamicWatcher, err := k8sdepwatches.New(kubeconfig, dynamicWatcherReconciler, nil)
if err != nil {
return err
}
go func() {
err := dynamicWatcher.Start(ctx)
if err != nil {
klog.Error(err, "Unable to start the dynamic watcher", "controller", propagatorctrl.ControllerName)
}
}()
if err = (&propagatorctrl.PolicyReconciler{
Client: mgr.GetClient(),
Scheme: mgr.GetScheme(),
Recorder: mgr.GetEventRecorderFor(propagatorctrl.ControllerName),
DynamicWatcher: dynamicWatcher,
RootPolicyLocks: &sync.Map{},
}).SetupWithManager(mgr); err != nil {
return err
}
if reportMetrics() {
if err = (&metricsctrl.MetricReconciler{
Client: mgr.GetClient(),
Scheme: mgr.GetScheme(),
}).SetupWithManager(mgr); err != nil {
return err
}
}
if err = (&automationctrl.PolicyAutomationReconciler{
Client: mgr.GetClient(),
DynamicClient: dynamicClient,
Scheme: mgr.GetScheme(),
Recorder: mgr.GetEventRecorderFor(automationctrl.ControllerName),
}).SetupWithManager(mgr); err != nil {
return err
}
if err = (&policysetctrl.PolicySetReconciler{
Client: mgr.GetClient(),
Scheme: mgr.GetScheme(),
Recorder: mgr.GetEventRecorderFor(policysetctrl.ControllerName),
}).SetupWithManager(mgr); err != nil {
return err
}
// TODO: allow KeyRotationDays & MaxConcurrentReconciles configuration
encryptionkeysctrl := &encryptionkeysctrl.EncryptionKeysReconciler{
Client: mgr.GetClient(),
KeyRotationDays: 30,
MaxConcurrentReconciles: 10,
Scheme: mgr.GetScheme(),
}
// TODO: allow MaxConcurrentReconciles passed in as a parameter
if err = (&rootpolicystatusctrl.RootPolicyStatusReconciler{
Client: mgr.GetClient(),
MaxConcurrentReconciles: 5,
RootPolicyLocks: &sync.Map{},
Scheme: mgr.GetScheme(),
}).SetupWithManager(mgr); err != nil {
return err
}
// need to limit to
ctrl.NewControllerManagedBy(mgr).
// The work queue prevents the same item being reconciled concurrently:
// https://github.com/kubernetes-sigs/controller-runtime/issues/1416#issuecomment-899833144
WithOptions(controller.Options{MaxConcurrentReconciles: int(encryptionkeysctrl.MaxConcurrentReconciles)}).
Named("policy-encryption-keys").
For(&corev1.Secret{}, builder.WithPredicates(predicate.Funcs{
UpdateFunc: func(e event.UpdateEvent) bool {
if e.ObjectNew.GetName() == propagatorctrl.EncryptionKeySecret {
return true
} else {
return false
}
},
CreateFunc: func(e event.CreateEvent) bool {
if e.Object.GetName() == propagatorctrl.EncryptionKeySecret {
return true
} else {
return false
}
},
DeleteFunc: func(e event.DeleteEvent) bool {
if e.Object.GetName() == propagatorctrl.EncryptionKeySecret {
return true
} else {
return false
}
},
})).
Complete(encryptionkeysctrl)
propagatorctrl.Initialize(kubeconfig, &kubeClient)
cache := mgr.GetCache()
// The following index for the PlacementRef Name is being added to the
// client cache to improve the performance of querying PlacementBindings
indexFunc := func(obj client.Object) []string {
return []string{obj.(*policyv1.PlacementBinding).PlacementRef.Name}
}
if err := cache.IndexField(
context.TODO(), &policyv1.PlacementBinding{}, "placementRef.name", indexFunc,
); err != nil {
panic(err)
}
klog.Info("Waiting for policy dynamic watcher to start")
// This is important to avoid adding watches before the dynamic watcher is ready
<-dynamicWatcher.Started()
return nil
}
// reportMetrics returns a bool on whether to report GRC metrics from the propagator
func reportMetrics() bool {
metrics, _ := os.LookupEnv("DISABLE_REPORT_METRICS")
return !strings.EqualFold(metrics, "true")
}