mirror of
https://github.com/kubernetes-sigs/prometheus-adapter.git
synced 2026-04-07 10:17:51 +00:00
a293b2bf94
Travis seems to be having issues pulling deps, so we'll have to check in the vendor directory and prevent the makefile from trying to regenerate it normally.
95 lines
2.6 KiB
Go
95 lines
2.6 KiB
Go
/*
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Copyright 2018 The Kubernetes 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 admission
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import (
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"fmt"
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auditinternal "k8s.io/apiserver/pkg/apis/audit"
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"k8s.io/apiserver/pkg/audit"
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)
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// auditHandler logs annotations set by other admission handlers
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type auditHandler struct {
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Interface
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ae *auditinternal.Event
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}
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var _ Interface = &auditHandler{}
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var _ MutationInterface = &auditHandler{}
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var _ ValidationInterface = &auditHandler{}
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// WithAudit is a decorator for a admission phase. It saves annotations
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// of attribute into the audit event. Attributes passed to the Admit and
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// Validate function must be instance of privateAnnotationsGetter or
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// AnnotationsGetter, otherwise an error is returned.
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func WithAudit(i Interface, ae *auditinternal.Event) Interface {
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if i == nil {
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return i
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}
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return &auditHandler{i, ae}
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}
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func (handler auditHandler) Admit(a Attributes) error {
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if !handler.Interface.Handles(a.GetOperation()) {
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return nil
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}
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if err := ensureAnnotationGetter(a); err != nil {
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return err
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}
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var err error
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if mutator, ok := handler.Interface.(MutationInterface); ok {
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err = mutator.Admit(a)
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handler.logAnnotations(a)
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}
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return err
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}
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func (handler auditHandler) Validate(a Attributes) error {
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if !handler.Interface.Handles(a.GetOperation()) {
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return nil
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}
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if err := ensureAnnotationGetter(a); err != nil {
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return err
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}
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var err error
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if validator, ok := handler.Interface.(ValidationInterface); ok {
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err = validator.Validate(a)
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handler.logAnnotations(a)
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}
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return err
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}
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func ensureAnnotationGetter(a Attributes) error {
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_, okPrivate := a.(privateAnnotationsGetter)
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_, okPublic := a.(AnnotationsGetter)
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if okPrivate || okPublic {
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return nil
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}
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return fmt.Errorf("attributes must be an instance of privateAnnotationsGetter or AnnotationsGetter")
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}
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func (handler auditHandler) logAnnotations(a Attributes) {
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switch a := a.(type) {
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case privateAnnotationsGetter:
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audit.LogAnnotations(handler.ae, a.getAnnotations())
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case AnnotationsGetter:
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audit.LogAnnotations(handler.ae, a.GetAnnotations())
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default:
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// this will never happen, because we have already checked it in ensureAnnotationGetter
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}
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}
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