/
template_controller.go
95 lines (77 loc) · 2.79 KB
/
template_controller.go
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package controllers
import (
"context"
"fmt"
"k8s.io/apimachinery/pkg/api/equality"
"k8s.io/apimachinery/pkg/runtime"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/event"
"sigs.k8s.io/controller-runtime/pkg/predicate"
cosmov1alpha1 "github.com/cosmo-workspace/cosmo/api/v1alpha1"
"github.com/cosmo-workspace/cosmo/pkg/clog"
)
// TemplateReconciler reconciles a Template object
type TemplateReconciler struct {
client.Client
Scheme *runtime.Scheme
FieldManager string
}
func (r *TemplateReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
log := clog.FromContext(ctx).WithName("TemplateReconciler").WithValues("req", req)
log.Debug().Info("start reconcile")
var tmpl cosmov1alpha1.Template
if err := r.Get(ctx, req.NamespacedName, &tmpl); err != nil {
return ctrl.Result{}, client.IgnoreNotFound(err)
}
log = log.WithValues("UID", tmpl.UID)
ctx = clog.IntoContext(ctx, log)
if err := r.reconcile(ctx, &tmpl); err != nil {
return ctrl.Result{}, err
}
log.Debug().Info("finish reconcile")
return ctrl.Result{}, nil
}
func (r *TemplateReconciler) reconcile(ctx context.Context, tmpl *cosmov1alpha1.Template) error {
log := clog.FromContext(ctx)
var insts cosmov1alpha1.InstanceList
err := r.List(ctx, &insts)
if err != nil {
return fmt.Errorf("failed to list instances for template %s: %w", tmpl.Name, err)
}
if errs := notifyUpdateToInstances(ctx, r.Client, tmpl, insts.InstanceObjects()); len(errs) > 0 {
for _, e := range errs {
log.Error(e, "failed to notify the update of template")
}
return fmt.Errorf("failed to notify the update of template %s", tmpl.Name)
}
return nil
}
func (r *TemplateReconciler) SetupWithManager(mgr ctrl.Manager) error {
return ctrl.NewControllerManagedBy(mgr).
For(&cosmov1alpha1.Template{}).
WithEventFilter(predicate.Funcs{
CreateFunc: func(ce event.CreateEvent) bool { return false },
}).
Complete(r)
}
func notifyUpdateToInstances(ctx context.Context, c client.Client, tmpl cosmov1alpha1.TemplateObject, insts []cosmov1alpha1.InstanceObject) []error {
log := clog.FromContext(ctx)
errs := make([]error, 0)
for _, inst := range insts {
if tmpl.GetName() != inst.GetSpec().Template.Name {
continue
}
before := inst.DeepCopyObject()
inst.GetStatus().TemplateResourceVersion = tmpl.GetResourceVersion()
if equality.Semantic.DeepEqual(before, inst) {
// log
continue
}
log.Info("notify template update to reconcile instance again", "template", tmpl.GetName(), "templateResourceVersion", tmpl.GetResourceVersion(), "instance", inst.GetName())
if err := c.Status().Update(ctx, inst); err != nil {
errs = append(errs, fmt.Errorf("failed to update instance status: %s: %w", inst.GetName(), err))
}
}
return errs
}