sigs.k8s.io/cluster-api-provider-azure@v1.14.3/exp/api/v1beta1/azuremachinepoolmachine_webhook.go (about)

     1  /*
     2  Copyright 2021 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package v1beta1
    18  
    19  import (
    20  	"github.com/pkg/errors"
    21  	"k8s.io/apimachinery/pkg/runtime"
    22  	"k8s.io/apimachinery/pkg/util/validation/field"
    23  	"sigs.k8s.io/cluster-api-provider-azure/feature"
    24  	capifeature "sigs.k8s.io/cluster-api/feature"
    25  	ctrl "sigs.k8s.io/controller-runtime"
    26  	"sigs.k8s.io/controller-runtime/pkg/webhook"
    27  	"sigs.k8s.io/controller-runtime/pkg/webhook/admission"
    28  )
    29  
    30  // SetupWebhookWithManager sets up and registers the webhook with the manager.
    31  func (ampm *AzureMachinePoolMachine) SetupWebhookWithManager(mgr ctrl.Manager) error {
    32  	return ctrl.NewWebhookManagedBy(mgr).
    33  		For(ampm).
    34  		Complete()
    35  }
    36  
    37  // +kubebuilder:webhook:verbs=create;update,path=/validate-infrastructure-cluster-x-k8s-io-v1beta1-azuremachinepoolmachine,mutating=false,failurePolicy=fail,groups=infrastructure.cluster.x-k8s.io,resources=azuremachinepoolmachines,versions=v1beta1,name=azuremachinepoolmachine.kb.io,sideEffects=None,admissionReviewVersions=v1;v1beta1
    38  
    39  var _ webhook.Validator = &AzureMachinePoolMachine{}
    40  
    41  // ValidateCreate implements webhook.Validator so a webhook will be registered for the type.
    42  func (ampm *AzureMachinePoolMachine) ValidateCreate() (admission.Warnings, error) {
    43  	return nil, nil
    44  }
    45  
    46  // ValidateUpdate implements webhook.Validator so a webhook will be registered for the type.
    47  func (ampm *AzureMachinePoolMachine) ValidateUpdate(old runtime.Object) (admission.Warnings, error) {
    48  	// NOTE: AzureMachinePoolMachine is behind MachinePool feature gate flag; the webhook
    49  	// must prevent creating new objects new case the feature flag is disabled.
    50  	if !feature.Gates.Enabled(capifeature.MachinePool) {
    51  		return nil, field.Forbidden(
    52  			field.NewPath("spec"),
    53  			"can be set only if the MachinePool feature flag is enabled",
    54  		)
    55  	}
    56  
    57  	oldMachine, ok := old.(*AzureMachinePoolMachine)
    58  	if !ok {
    59  		return nil, errors.New("expected and AzureMachinePoolMachine")
    60  	}
    61  
    62  	if oldMachine.Spec.ProviderID != "" && ampm.Spec.ProviderID != oldMachine.Spec.ProviderID {
    63  		return nil, errors.New("providerID is immutable")
    64  	}
    65  
    66  	return nil, nil
    67  }
    68  
    69  // ValidateDelete implements webhook.Validator so a webhook will be registered for the type.
    70  func (ampm *AzureMachinePoolMachine) ValidateDelete() (admission.Warnings, error) {
    71  	return nil, nil
    72  }