1/* 2Copyright 2018 The Kubernetes Authors. 3 4Licensed under the Apache License, Version 2.0 (the "License"); 5you may not use this file except in compliance with the License. 6You may obtain a copy of the License at 7 8 http://www.apache.org/licenses/LICENSE-2.0 9 10Unless required by applicable law or agreed to in writing, software 11distributed under the License is distributed on an "AS IS" BASIS, 12WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13See the License for the specific language governing permissions and 14limitations under the License. 15*/ 16 17package policy 18 19import ( 20 "fmt" 21 22 "k8s.io/apiserver/pkg/apis/audit" 23) 24 25// EnforcePolicy drops any part of the event that doesn't conform to a policy level 26// or omitStages and sets the event level accordingly 27func EnforcePolicy(event *audit.Event, level audit.Level, omitStages []audit.Stage) (*audit.Event, error) { 28 for _, stage := range omitStages { 29 if event.Stage == stage { 30 return nil, nil 31 } 32 } 33 return enforceLevel(event, level) 34} 35 36func enforceLevel(event *audit.Event, level audit.Level) (*audit.Event, error) { 37 switch level { 38 case audit.LevelMetadata: 39 event.Level = audit.LevelMetadata 40 event.ResponseObject = nil 41 event.RequestObject = nil 42 case audit.LevelRequest: 43 event.Level = audit.LevelRequest 44 event.ResponseObject = nil 45 case audit.LevelRequestResponse: 46 event.Level = audit.LevelRequestResponse 47 case audit.LevelNone: 48 return nil, nil 49 default: 50 return nil, fmt.Errorf("level unknown: %s", level) 51 } 52 return event, nil 53} 54