/
deployment_trigger_controller.go
145 lines (122 loc) · 4.73 KB
/
deployment_trigger_controller.go
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package controller
import (
"context"
"time"
ottoscaleriov1alpha1 "github.com/flipkart-incubator/ottoscalr/api/v1alpha1"
"github.com/flipkart-incubator/ottoscalr/pkg/reco"
"github.com/flipkart-incubator/ottoscalr/pkg/registry"
"github.com/go-logr/logr"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/types"
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/event"
"sigs.k8s.io/controller-runtime/pkg/handler"
"sigs.k8s.io/controller-runtime/pkg/log"
"sigs.k8s.io/controller-runtime/pkg/predicate"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
)
const (
DeploymentTriggerCtrlName = "DeploymentTriggerController"
)
type DeploymentTriggerController struct {
Client client.Client
Scheme *runtime.Scheme
ClientsRegistry registry.DeploymentClientRegistry
}
func NewDeploymentTriggerController(client client.Client,
scheme *runtime.Scheme, clientsRegistry registry.DeploymentClientRegistry) *DeploymentTriggerController {
return &DeploymentTriggerController{
Client: client,
Scheme: scheme,
ClientsRegistry: clientsRegistry,
}
}
// +kubebuilder:rbac:groups=argoproj.io,resources=rollouts,verbs=get;list;watch
// +kubebuilder:rbac:groups=apps,resources=deployments,verbs=get;list;watch
// +kubebuilder:rbac:groups=your-group.io,resources=policyrecommendations,verbs=create;get;list;watch;update;delete
//+kubebuilder:rbac:groups=ottoscaler.io,resources=policyrecommendations/status,verbs=get;update;patch
//+kubebuilder:rbac:groups=ottoscaler.io,resources=policyrecommendations/finalizers,verbs=update
func (r *DeploymentTriggerController) Reconcile(ctx context.Context,
request ctrl.Request) (ctrl.Result, error) {
logger := log.FromContext(ctx)
logger = logger.WithValues("request", request).WithName(DeploymentTriggerCtrlName)
for _, obj := range r.ClientsRegistry.Clients {
object, err := obj.GetObject(request.Namespace, request.Name)
if err == nil {
return ctrl.Result{}, r.requeuePolicyRecommendation(ctx, object, r.Scheme, logger)
}
if !errors.IsNotFound(err) {
// Error occurred
logger.Error(err, "Failed to get. Requeue the request")
return ctrl.Result{RequeueAfter: 1 * time.Second}, err
}
}
logger.Info("Rollout or Deployment not found.")
return ctrl.Result{}, nil
}
func (r *DeploymentTriggerController) requeuePolicyRecommendation(ctx context.Context,
object client.Object,
scheme *runtime.Scheme,
logger logr.Logger) error {
now := metav1.Now()
policyRecommendation := &ottoscaleriov1alpha1.PolicyRecommendation{}
err := r.Client.Get(context.Background(), types.NamespacedName{
Namespace: object.GetNamespace(),
Name: object.GetName(),
}, policyRecommendation)
if err != nil {
logger.Error(err, "Error while getting policyRecommendation.", "workloadName", object.GetName(), "workloadNamespace", object.GetNamespace())
return client.IgnoreNotFound(err)
}
policyRecommendation.Spec.QueuedForExecution = &trueBool
policyRecommendation.Spec.QueuedForExecutionAt = &now
err = r.Client.Update(context.Background(), policyRecommendation, client.FieldOwner(DeploymentTriggerCtrlName))
if err != nil {
logger.Error(err, "Error while updating policyRecommendation.", "workloadName", object.GetName(), "workloadNamespace", object.GetNamespace())
return err
}
return nil
}
// SetupWithManager sets up the controller with the Manager.
func (r *DeploymentTriggerController) SetupWithManager(mgr ctrl.Manager) error {
annotationUpdatePredicate := predicate.Funcs{
CreateFunc: func(e event.CreateEvent) bool {
return false
},
DeleteFunc: func(e event.DeleteEvent) bool {
return false
},
UpdateFunc: func(e event.UpdateEvent) bool {
newObj := e.ObjectNew
oldObj := e.ObjectOld
var newMaxPods, oldMaxPods string
newMaxPods, _ = newObj.GetAnnotations()[reco.OttoscalrMaxPodAnnotation]
oldMaxPods, _ = oldObj.GetAnnotations()[reco.OttoscalrMaxPodAnnotation]
if newMaxPods != oldMaxPods {
return true
}
return false
},
GenericFunc: func(e event.GenericEvent) bool {
return false
},
}
enqueueFunc := func(ctx context.Context, obj client.Object) []reconcile.Request {
return []reconcile.Request{{NamespacedName: types.NamespacedName{Name: obj.GetName(),
Namespace: obj.GetNamespace()}}}
}
controllerBuilder := ctrl.NewControllerManagedBy(mgr).
Named(DeploymentTriggerCtrlName)
for _, object := range r.ClientsRegistry.Clients {
controllerBuilder.Watches(
object.GetObjectType(),
handler.EnqueueRequestsFromMapFunc(enqueueFunc),
builder.WithPredicates(annotationUpdatePredicate),
)
}
return controllerBuilder.Complete(r)
}