130 lines
3.6 KiB
Go
130 lines
3.6 KiB
Go
/*
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Copyright 2022 The Crossplane Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package webhook
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import (
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"context"
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"k8s.io/apimachinery/pkg/runtime"
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"sigs.k8s.io/controller-runtime/pkg/webhook/admission"
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)
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// WithValidateCreationFns initializes the Validator with given set of creation
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// validation functions.
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func WithValidateCreationFns(fns ...ValidateCreateFn) ValidatorOption {
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return func(v *Validator) {
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v.CreationChain = fns
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}
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}
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// WithValidateUpdateFns initializes the Validator with given set of update
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// validation functions.
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func WithValidateUpdateFns(fns ...ValidateUpdateFn) ValidatorOption {
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return func(v *Validator) {
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v.UpdateChain = fns
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}
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}
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// WithValidateDeletionFns initializes the Validator with given set of deletion
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// validation functions.
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func WithValidateDeletionFns(fns ...ValidateDeleteFn) ValidatorOption {
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return func(v *Validator) {
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v.DeletionChain = fns
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}
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}
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// ValidatorOption allows you to configure given Validator.
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type ValidatorOption func(*Validator)
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// ValidateCreateFn is function type for creation validation.
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type ValidateCreateFn func(ctx context.Context, obj runtime.Object) (admission.Warnings, error)
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// ValidateUpdateFn is function type for update validation.
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type ValidateUpdateFn func(ctx context.Context, oldObj, newObj runtime.Object) (admission.Warnings, error)
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// ValidateDeleteFn is function type for deletion validation.
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type ValidateDeleteFn func(ctx context.Context, obj runtime.Object) (admission.Warnings, error)
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// NewValidator returns a new Validator with no-op defaults.
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func NewValidator(opts ...ValidatorOption) *Validator {
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vc := &Validator{
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CreationChain: []ValidateCreateFn{},
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UpdateChain: []ValidateUpdateFn{},
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DeletionChain: []ValidateDeleteFn{},
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}
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for _, f := range opts {
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f(vc)
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}
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return vc
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}
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// Validator runs the given validation chains in order.
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type Validator struct {
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CreationChain []ValidateCreateFn
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UpdateChain []ValidateUpdateFn
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DeletionChain []ValidateDeleteFn
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}
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// ValidateCreate runs functions in creation chain in order.
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func (vc *Validator) ValidateCreate(ctx context.Context, obj runtime.Object) (admission.Warnings, error) {
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warnings := []string{}
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for _, f := range vc.CreationChain {
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warns, err := f(ctx, obj)
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if err != nil {
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return append(warnings, warns...), err
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}
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warnings = append(warnings, warns...)
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}
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return warnings, nil
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}
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// ValidateUpdate runs functions in update chain in order.
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func (vc *Validator) ValidateUpdate(ctx context.Context, oldObj, newObj runtime.Object) (admission.Warnings, error) {
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warnings := []string{}
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for _, f := range vc.UpdateChain {
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warns, err := f(ctx, oldObj, newObj)
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if err != nil {
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return append(warnings, warns...), err
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}
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warnings = append(warnings, warns...)
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}
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return warnings, nil
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}
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// ValidateDelete runs functions in deletion chain in order.
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func (vc *Validator) ValidateDelete(ctx context.Context, obj runtime.Object) (admission.Warnings, error) {
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warnings := []string{}
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for _, f := range vc.DeletionChain {
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warns, err := f(ctx, obj)
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if err != nil {
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return append(warnings, warns...), err
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}
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warnings = append(warnings, warns...)
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}
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return warnings, nil
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}
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