cloudfoundry/cf-k8s-controllers

package instances

import (
    "context"
    "fmt"

    korifiv1alpha1 "code.cloudfoundry.org/korifi/controllers/api/v1alpha1"
    "code.cloudfoundry.org/korifi/controllers/webhooks"

    apierrors "k8s.io/apimachinery/pkg/api/errors"
    "k8s.io/apimachinery/pkg/runtime"
    ctrl "sigs.k8s.io/controller-runtime"
    logf "sigs.k8s.io/controller-runtime/pkg/log"
    "sigs.k8s.io/controller-runtime/pkg/webhook"
    "sigs.k8s.io/controller-runtime/pkg/webhook/admission"
)

const (
    ServiceInstanceEntityType = "serviceinstance"
)

var cfserviceinstancelog = logf.Log.WithName("cfserviceinstance-validate")

//+kubebuilder:webhook:path=/validate-korifi-cloudfoundry-org-v1alpha1-cfserviceinstance,mutating=false,failurePolicy=fail,sideEffects=NoneOnDryRun,groups=korifi.cloudfoundry.org,resources=cfserviceinstances,verbs=create;update;delete,versions=v1alpha1,name=vcfserviceinstance.korifi.cloudfoundry.org,admissionReviewVersions={v1,v1beta1}

type Validator struct {
    duplicateValidator webhooks.NameValidator
}

var _ webhook.CustomValidator = &Validator{}

func NewValidator(duplicateValidator webhooks.NameValidator) *Validator {
    return &Validator{
        duplicateValidator: duplicateValidator,
    }
}

func (v *Validator) SetupWebhookWithManager(mgr ctrl.Manager) error {
    return ctrl.NewWebhookManagedBy(mgr).
        For(&korifiv1alpha1.CFServiceInstance{}).
        WithValidator(v).
        Complete()
}

func (v *Validator) ValidateCreate(ctx context.Context, obj runtime.Object) (admission.Warnings, error) {
    serviceInstance, ok := obj.(*korifiv1alpha1.CFServiceInstance)
    if !ok {
        return nil, apierrors.NewBadRequest(fmt.Sprintf("expected a CFServiceInstance but got a %T", obj))
    }

    return nil, v.duplicateValidator.ValidateCreate(ctx, cfserviceinstancelog, serviceInstance.Namespace, serviceInstance)
}

func (v *Validator) ValidateUpdate(ctx context.Context, oldObj, obj runtime.Object) (admission.Warnings, error) {
    serviceInstance, ok := obj.(*korifiv1alpha1.CFServiceInstance)
    if !ok {
        return nil, apierrors.NewBadRequest(fmt.Sprintf("expected a CFServiceInstance but got a %T", obj))
    }

    if !serviceInstance.GetDeletionTimestamp().IsZero() {
        return nil, nil
    }

    oldServiceInstance, ok := oldObj.(*korifiv1alpha1.CFServiceInstance)
    if !ok {
        return nil, apierrors.NewBadRequest(fmt.Sprintf("expected a CFServiceInstance but got a %T", oldObj))
    }

    return nil, v.duplicateValidator.ValidateUpdate(ctx, cfserviceinstancelog, serviceInstance.Namespace, oldServiceInstance, serviceInstance)
}

func (v *Validator) ValidateDelete(ctx context.Context, obj runtime.Object) (admission.Warnings, error) {
    serviceInstance, ok := obj.(*korifiv1alpha1.CFServiceInstance)
    if !ok {
        return nil, apierrors.NewBadRequest(fmt.Sprintf("expected a CFServiceInstance but got a %T", obj))
    }

    return nil, v.duplicateValidator.ValidateDelete(ctx, cfserviceinstancelog, serviceInstance.Namespace, serviceInstance)
}