mirror of
https://github.com/ceph/ceph-csi.git
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96 lines
3.0 KiB
Go
96 lines
3.0 KiB
Go
/*
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Copyright 2022 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 validating
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import (
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"context"
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celgo "github.com/google/cel-go/cel"
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corev1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apiserver/pkg/admission"
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"k8s.io/apiserver/pkg/admission/plugin/cel"
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"k8s.io/apiserver/pkg/authorization/authorizer"
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)
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var _ cel.ExpressionAccessor = &ValidationCondition{}
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// ValidationCondition contains the inputs needed to compile, evaluate and validate a cel expression
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type ValidationCondition struct {
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Expression string
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Message string
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Reason *metav1.StatusReason
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}
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func (v *ValidationCondition) GetExpression() string {
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return v.Expression
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}
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func (v *ValidationCondition) ReturnTypes() []*celgo.Type {
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return []*celgo.Type{celgo.BoolType}
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}
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// AuditAnnotationCondition contains the inputs needed to compile, evaluate and publish a cel audit annotation
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type AuditAnnotationCondition struct {
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Key string
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ValueExpression string
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}
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func (v *AuditAnnotationCondition) GetExpression() string {
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return v.ValueExpression
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}
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func (v *AuditAnnotationCondition) ReturnTypes() []*celgo.Type {
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return []*celgo.Type{celgo.StringType, celgo.NullType}
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}
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// Variable is a named expression for composition.
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type Variable struct {
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Name string
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Expression string
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}
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func (v *Variable) GetExpression() string {
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return v.Expression
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}
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func (v *Variable) ReturnTypes() []*celgo.Type {
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return []*celgo.Type{celgo.AnyType, celgo.DynType}
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}
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func (v *Variable) GetName() string {
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return v.Name
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}
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// ValidateResult defines the result of a Validator.Validate operation.
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type ValidateResult struct {
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// Decisions specifies the outcome of the validation as well as the details about the decision.
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Decisions []PolicyDecision
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// AuditAnnotations specifies the audit annotations that should be recorded for the validation.
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AuditAnnotations []PolicyAuditAnnotation
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}
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// Validator is contains logic for converting ValidationEvaluation to PolicyDecisions
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type Validator interface {
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// Validate is used to take cel evaluations and convert into decisions
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// runtimeCELCostBudget was added for testing purpose only. Callers should always use const RuntimeCELCostBudget from k8s.io/apiserver/pkg/apis/cel/config.go as input.
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Validate(ctx context.Context, matchedResource schema.GroupVersionResource, versionedAttr *admission.VersionedAttributes, versionedParams runtime.Object, namespace *corev1.Namespace, runtimeCELCostBudget int64, authz authorizer.Authorizer) ValidateResult
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}
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