| /* |
| Copyright 2019 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 mutating |
| |
| import ( |
| apiequality "k8s.io/apimachinery/pkg/api/equality" |
| "k8s.io/apimachinery/pkg/runtime" |
| "k8s.io/apimachinery/pkg/util/sets" |
| ) |
| |
| type webhookReinvokeContext struct { |
| // lastWebhookOutput holds the result of the last webhook admission plugin call |
| lastWebhookOutput runtime.Object |
| // previouslyInvokedReinvocableWebhooks holds the set of webhooks that have been invoked and |
| // should be reinvoked if a later mutation occurs |
| previouslyInvokedReinvocableWebhooks sets.String |
| // reinvokeWebhooks holds the set of webhooks that should be reinvoked |
| reinvokeWebhooks sets.String |
| } |
| |
| func (rc *webhookReinvokeContext) ShouldReinvokeWebhook(webhook string) bool { |
| return rc.reinvokeWebhooks.Has(webhook) |
| } |
| |
| func (rc *webhookReinvokeContext) IsOutputChangedSinceLastWebhookInvocation(object runtime.Object) bool { |
| return !apiequality.Semantic.DeepEqual(rc.lastWebhookOutput, object) |
| } |
| |
| func (rc *webhookReinvokeContext) SetLastWebhookInvocationOutput(object runtime.Object) { |
| if object == nil { |
| rc.lastWebhookOutput = nil |
| return |
| } |
| rc.lastWebhookOutput = object.DeepCopyObject() |
| } |
| |
| func (rc *webhookReinvokeContext) AddReinvocableWebhookToPreviouslyInvoked(webhook string) { |
| if rc.previouslyInvokedReinvocableWebhooks == nil { |
| rc.previouslyInvokedReinvocableWebhooks = sets.NewString() |
| } |
| rc.previouslyInvokedReinvocableWebhooks.Insert(webhook) |
| } |
| |
| func (rc *webhookReinvokeContext) RequireReinvokingPreviouslyInvokedPlugins() { |
| if len(rc.previouslyInvokedReinvocableWebhooks) > 0 { |
| if rc.reinvokeWebhooks == nil { |
| rc.reinvokeWebhooks = sets.NewString() |
| } |
| for s := range rc.previouslyInvokedReinvocableWebhooks { |
| rc.reinvokeWebhooks.Insert(s) |
| } |
| rc.previouslyInvokedReinvocableWebhooks = sets.NewString() |
| } |
| } |