| /* |
| Copyright 2017 The Kubernetes Authors. |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| */ |
| |
| package networkpolicy |
| |
| import ( |
| "context" |
| "reflect" |
| |
| "k8s.io/apimachinery/pkg/runtime" |
| "k8s.io/apimachinery/pkg/util/validation/field" |
| "k8s.io/apiserver/pkg/storage/names" |
| "k8s.io/kubernetes/pkg/api/legacyscheme" |
| "k8s.io/kubernetes/pkg/apis/networking" |
| "k8s.io/kubernetes/pkg/apis/networking/validation" |
| ) |
| |
| // networkPolicyStrategy implements verification logic for NetworkPolicies |
| type networkPolicyStrategy struct { |
| runtime.ObjectTyper |
| names.NameGenerator |
| } |
| |
| // Strategy is the default logic that applies when creating and updating NetworkPolicy objects. |
| var Strategy = networkPolicyStrategy{legacyscheme.Scheme, names.SimpleNameGenerator} |
| |
| // NamespaceScoped returns true because all NetworkPolicies need to be within a namespace. |
| func (networkPolicyStrategy) NamespaceScoped() bool { |
| return true |
| } |
| |
| // PrepareForCreate clears the status of a NetworkPolicy before creation. |
| func (networkPolicyStrategy) PrepareForCreate(ctx context.Context, obj runtime.Object) { |
| networkPolicy := obj.(*networking.NetworkPolicy) |
| networkPolicy.Generation = 1 |
| } |
| |
| // PrepareForUpdate clears fields that are not allowed to be set by end users on update. |
| func (networkPolicyStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) { |
| newNetworkPolicy := obj.(*networking.NetworkPolicy) |
| oldNetworkPolicy := old.(*networking.NetworkPolicy) |
| |
| // Any changes to the spec increment the generation number, any changes to the |
| // status should reflect the generation number of the corresponding object. |
| // See metav1.ObjectMeta description for more information on Generation. |
| if !reflect.DeepEqual(oldNetworkPolicy.Spec, newNetworkPolicy.Spec) { |
| newNetworkPolicy.Generation = oldNetworkPolicy.Generation + 1 |
| } |
| } |
| |
| // Validate validates a new NetworkPolicy. |
| func (networkPolicyStrategy) Validate(ctx context.Context, obj runtime.Object) field.ErrorList { |
| networkPolicy := obj.(*networking.NetworkPolicy) |
| return validation.ValidateNetworkPolicy(networkPolicy) |
| } |
| |
| // Canonicalize normalizes the object after validation. |
| func (networkPolicyStrategy) Canonicalize(obj runtime.Object) {} |
| |
| // AllowCreateOnUpdate is false for NetworkPolicy; this means POST is needed to create one. |
| func (networkPolicyStrategy) AllowCreateOnUpdate() bool { |
| return false |
| } |
| |
| // ValidateUpdate is the default update validation for an end user. |
| func (networkPolicyStrategy) ValidateUpdate(ctx context.Context, obj, old runtime.Object) field.ErrorList { |
| validationErrorList := validation.ValidateNetworkPolicy(obj.(*networking.NetworkPolicy)) |
| updateErrorList := validation.ValidateNetworkPolicyUpdate(obj.(*networking.NetworkPolicy), old.(*networking.NetworkPolicy)) |
| return append(validationErrorList, updateErrorList...) |
| } |
| |
| // AllowUnconditionalUpdate is the default update policy for NetworkPolicy objects. |
| func (networkPolicyStrategy) AllowUnconditionalUpdate() bool { |
| return true |
| } |