validating

package
v0.30.0 Latest Latest
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 Go to latest Published: Apr 17, 2024 License: Apache-2.0 Imports: 47 Imported by: 4

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Constants

View Source 
const (
	// PluginName indicates the name of admission plug-in
	PluginName = "ValidatingAdmissionPolicy"
)

Variables

This section is empty.

Functions

func NewDispatcher 

func NewDispatcher(
	authorizer authorizer.Authorizer,
	matcher generic.PolicyMatcher,
) generic.Dispatcher[PolicyHook]

func NewValidatingAdmissionPolicyAccessor 

func NewValidatingAdmissionPolicyAccessor(obj *v1.ValidatingAdmissionPolicy) generic.PolicyAccessor

func NewValidatingAdmissionPolicyBindingAccessor 

func NewValidatingAdmissionPolicyBindingAccessor(obj *v1.ValidatingAdmissionPolicyBinding) generic.BindingAccessor

func Register 

func Register(plugins *admission.Plugins)

Register registers a plugin

Types

type AuditAnnotationCondition 

type AuditAnnotationCondition struct {
	Key             string
	ValueExpression string
}

AuditAnnotationCondition contains the inputs needed to compile, evaluate and publish a cel audit annotation

func (*AuditAnnotationCondition) GetExpression 

func (v *AuditAnnotationCondition) GetExpression() string

func (*AuditAnnotationCondition) ReturnTypes 

func (v *AuditAnnotationCondition) ReturnTypes() []*celgo.Type

type CELPolicyEvaluator 

type CELPolicyEvaluator interface {
	admission.InitializationValidator

	Validate(ctx context.Context, a admission.Attributes, o admission.ObjectInterfaces) error
	HasSynced() bool
	Run(stopCh <-chan struct{})
}

type MessageExpressionCondition 

type MessageExpressionCondition struct {
	MessageExpression string
}

func (*MessageExpressionCondition) GetExpression 

func (m *MessageExpressionCondition) GetExpression() string

func (*MessageExpressionCondition) ReturnTypes 

func (m *MessageExpressionCondition) ReturnTypes() []*celgo.Type

type Plugin 

type Plugin struct {
	*generic.Plugin[PolicyHook]
}

func NewPlugin 

func NewPlugin(_ io.Reader) *Plugin

func (*Plugin) InspectFeatureGates 

func (a *Plugin) InspectFeatureGates(featureGates featuregate.FeatureGate)

func (*Plugin) Validate 

func (a *Plugin) Validate(ctx context.Context, attr admission.Attributes, o admission.ObjectInterfaces) error

Validate makes an admission decision based on the request attributes.

type Policy 

type Policy = v1.ValidatingAdmissionPolicy

Plugin is an implementation of admission.Interface.

type PolicyAuditAnnotation 

type PolicyAuditAnnotation struct {
	Key     string
	Value   string
	Elapsed time.Duration
	Action  PolicyAuditAnnotationAction
	Error   string
}

type PolicyAuditAnnotationAction 

type PolicyAuditAnnotationAction string
const (
	// AuditAnnotationActionPublish indicates that the audit annotation should be
	// published with the audit event.
	AuditAnnotationActionPublish PolicyAuditAnnotationAction = "publish"
	// AuditAnnotationActionError indicates that the valueExpression resulted
	// in an error.
	AuditAnnotationActionError PolicyAuditAnnotationAction = "error"
	// AuditAnnotationActionExclude indicates that the audit annotation should be excluded
	// because the valueExpression evaluated to null, or because FailurePolicy is Ignore
	// and the expression failed with a parse error, type check error, or runtime error.
	AuditAnnotationActionExclude PolicyAuditAnnotationAction = "exclude"
)

type PolicyBinding 

type PolicyBinding = v1.ValidatingAdmissionPolicyBinding

type PolicyDecision 

type PolicyDecision struct {
	Action     PolicyDecisionAction
	Evaluation PolicyDecisionEvaluation
	Message    string
	Reason     metav1.StatusReason
	Elapsed    time.Duration
}

PolicyDecision contains the action determined from a cel evaluation along with metadata such as message, reason and duration

type PolicyDecisionAction 

type PolicyDecisionAction string
const (
	ActionAdmit PolicyDecisionAction = "admit"
	ActionDeny  PolicyDecisionAction = "deny"
)

type PolicyDecisionEvaluation 

type PolicyDecisionEvaluation string
const (
	EvalAdmit PolicyDecisionEvaluation = "admit"
	EvalError PolicyDecisionEvaluation = "error"
	EvalDeny  PolicyDecisionEvaluation = "deny"
)

type PolicyEvaluator 

type PolicyEvaluator = Validator

type PolicyHook 

type PolicyHook = generic.PolicyHook[*Policy, *PolicyBinding, PolicyEvaluator]

type TypeChecker 

type TypeChecker struct {
	SchemaResolver resolver.SchemaResolver
	RestMapper     meta.RESTMapper
}

func (*TypeChecker) Check 

func (c *TypeChecker) Check(policy *v1.ValidatingAdmissionPolicy) []v1.ExpressionWarning

Check preforms the type check against the given policy, and format the result as []ExpressionWarning that is ready to be set in policy.Status The result is nil if type checking returns no warning. The policy object is NOT mutated. The caller should update Status accordingly

func (*TypeChecker) CheckExpression 

func (c *TypeChecker) CheckExpression(ctx *TypeCheckingContext, expression string) TypeCheckingResults

CheckExpression type checks a single expression, given the context

func (*TypeChecker) CreateContext 

func (c *TypeChecker) CreateContext(policy *v1.ValidatingAdmissionPolicy) *TypeCheckingContext

CreateContext resolves all types and their schemas from a policy definition and creates the context.

type TypeCheckingContext 

type TypeCheckingContext struct {
	// contains filtered or unexported fields
}

TypeCheckingContext holds information about the policy being type-checked. The struct is opaque to the caller.

type TypeCheckingResult 

type TypeCheckingResult struct {
	// GVK is the associated GVK
	GVK schema.GroupVersionKind
	// Issues contain machine-readable information about the typechecking result.
	Issues error
	// Err is the possible error that was encounter during type checking.
	Err error
}

TypeCheckingResult holds the issues found during type checking, any returned error, and the gvk that the type checking is performed against.

func (*TypeCheckingResult) String 

func (r *TypeCheckingResult) String() string

String converts the result to human-readable form as a string.

type TypeCheckingResults 

type TypeCheckingResults []*TypeCheckingResult

TypeCheckingResults is a collection of TypeCheckingResult

func (TypeCheckingResults) String 

func (rs TypeCheckingResults) String() string

type ValidateResult 

type ValidateResult struct {
	// Decisions specifies the outcome of the validation as well as the details about the decision.
	Decisions []PolicyDecision
	// AuditAnnotations specifies the audit annotations that should be recorded for the validation.
	AuditAnnotations []PolicyAuditAnnotation
}

ValidateResult defines the result of a Validator.Validate operation.

type ValidationCondition 

type ValidationCondition struct {
	Expression string
	Message    string
	Reason     *metav1.StatusReason
}

ValidationCondition contains the inputs needed to compile, evaluate and validate a cel expression

func (*ValidationCondition) GetExpression 

func (v *ValidationCondition) GetExpression() string

func (*ValidationCondition) ReturnTypes 

func (v *ValidationCondition) ReturnTypes() []*celgo.Type

type ValidationFailureValue 

type ValidationFailureValue struct {
	Message           string                                     `json:"message"`
	Policy            string                                     `json:"policy"`
	Binding           string                                     `json:"binding"`
	ExpressionIndex   int                                        `json:"expressionIndex"`
	ValidationActions []admissionregistrationv1.ValidationAction `json:"validationActions"`
}

validationFailureValue defines the JSON format of a "validation.policy.admission.k8s.io/validation_failure" audit annotation value.

type Validator 

type Validator interface {
	// Validate is used to take cel evaluations and convert into decisions
	// runtimeCELCostBudget was added for testing purpose only. Callers should always use const RuntimeCELCostBudget from k8s.io/apiserver/pkg/apis/cel/config.go as input.
	Validate(ctx context.Context, matchedResource schema.GroupVersionResource, versionedAttr *admission.VersionedAttributes, versionedParams runtime.Object, namespace *corev1.Namespace, runtimeCELCostBudget int64, authz authorizer.Authorizer) ValidateResult
}

Validator is contains logic for converting ValidationEvaluation to PolicyDecisions

func NewValidator 

func NewValidator(validationFilter cel.Filter, celMatcher matchconditions.Matcher, auditAnnotationFilter, messageFilter cel.Filter, failPolicy *v1.FailurePolicyType) Validator

type Variable 

type Variable struct {
	Name       string
	Expression string
}

Variable is a named expression for composition.

func (*Variable) GetExpression 

func (v *Variable) GetExpression() string

func (*Variable) GetName 

func (v *Variable) GetName() string

func (*Variable) ReturnTypes 

func (v *Variable) ReturnTypes() []*celgo.Type

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