gcpchaos_webhook.go

Documentation: github.com/chaos-mesh/chaos-mesh/api/v1alpha1

     1  // Copyright 2021 Chaos Mesh Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package v1alpha1
    15  
    16  import (
    17  	"fmt"
    18  	"reflect"
    19  
    20  	"k8s.io/apimachinery/pkg/runtime"
    21  	"k8s.io/apimachinery/pkg/util/validation/field"
    22  	logf "sigs.k8s.io/controller-runtime/pkg/log"
    23  	"sigs.k8s.io/controller-runtime/pkg/webhook"
    24  )
    25  
    26  // log is for logging in this package.
    27  var gcpchaoslog = logf.Log.WithName("gcpchaos-resource")
    28  
    29  // +kubebuilder:webhook:path=/mutate-chaos-mesh-org-v1alpha1-gcpchaos,mutating=true,failurePolicy=fail,groups=chaos-mesh.org,resources=gcpchaos,verbs=create;update,versions=v1alpha1,name=mgcpchaos.kb.io
    30  
    31  var _ webhook.Defaulter = &GCPChaos{}
    32  
    33  // Default implements webhook.Defaulter so a webhook will be registered for the type
    34  func (in *GCPChaos) Default() {
    35  	gcpchaoslog.Info("default", "name", in.Name)
    36  	in.Spec.Default()
    37  }
    38  
    39  func (in *GCPChaosSpec) Default() {
    40  }
    41  
    42  // +kubebuilder:webhook:verbs=create;update,path=/validate-chaos-mesh-org-v1alpha1-gcpchaos,mutating=false,failurePolicy=fail,groups=chaos-mesh.org,resources=gcpchaos,versions=v1alpha1,name=vgcpchaos.kb.io
    43  
    44  var _ webhook.Validator = &GCPChaos{}
    45  
    46  // ValidateCreate implements webhook.Validator so a webhook will be registered for the type
    47  func (in *GCPChaos) ValidateCreate() error {
    48  	gcpchaoslog.Info("validate create", "name", in.Name)
    49  	return in.Validate()
    50  }
    51  
    52  // ValidateUpdate implements webhook.Validator so a webhook will be registered for the type
    53  func (in *GCPChaos) ValidateUpdate(old runtime.Object) error {
    54  	gcpchaoslog.Info("validate update", "name", in.Name)
    55  	if !reflect.DeepEqual(in.Spec, old.(*GCPChaos).Spec) {
    56  		return ErrCanNotUpdateChaos
    57  	}
    58  	return in.Validate()
    59  }
    60  
    61  // ValidateDelete implements webhook.Validator so a webhook will be registered for the type
    62  func (in *GCPChaos) ValidateDelete() error {
    63  	gcpchaoslog.Info("validate delete", "name", in.Name)
    64  
    65  	// Nothing to do?
    66  	return nil
    67  }
    68  
    69  // Validate validates chaos object
    70  func (in *GCPChaos) Validate() error {
    71  	allErrs := in.Spec.Validate()
    72  
    73  	if len(allErrs) > 0 {
    74  		return fmt.Errorf(allErrs.ToAggregate().Error())
    75  	}
    76  	return nil
    77  }
    78  
    79  func (in *GCPChaosSpec) Validate() field.ErrorList {
    80  	specField := field.NewPath("spec")
    81  	allErrs := in.validateDeviceName(specField.Child("deviceName"))
    82  	allErrs = append(allErrs, validateDuration(in, specField)...)
    83  	allErrs = append(allErrs, in.validateAction(specField)...)
    84  	return allErrs
    85  }
    86  
    87  // validateDeviceName validates the DeviceName
    88  func (in *GCPChaosSpec) validateAction(spec *field.Path) field.ErrorList {
    89  	allErrs := field.ErrorList{}
    90  
    91  	switch in.Action {
    92  	case NodeStop, DiskLoss:
    93  	case NodeReset:
    94  	default:
    95  		err := fmt.Errorf("gcpchaos have unknown action type")
    96  		log.Error(err, "Wrong GCPChaos Action type")
    97  
    98  		actionField := spec.Child("action")
    99  		allErrs = append(allErrs, field.Invalid(actionField, in.Action, err.Error()))
   100  	}
   101  	return allErrs
   102  }
   103  
   104  // validateDeviceName validates the DeviceName
   105  func (in *GCPChaosSpec) validateDeviceName(containerField *field.Path) field.ErrorList {
   106  	allErrs := field.ErrorList{}
   107  	if in.Action == DiskLoss {
   108  		if in.DeviceNames == nil {
   109  			err := fmt.Errorf("at least one device name is required on %s action", in.Action)
   110  			allErrs = append(allErrs, field.Invalid(containerField, in.DeviceNames, err.Error()))
   111  		}
   112  	}
   113  	return allErrs
   114  }
   115