mirror of
https://github.com/kyverno/kyverno.git
synced 2025-03-06 07:57:07 +00:00
377 lines
12 KiB
Go
377 lines
12 KiB
Go
package event
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import (
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"fmt"
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"strings"
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kyvernov1 "github.com/kyverno/kyverno/api/kyverno/v1"
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kyvernov2alpha1 "github.com/kyverno/kyverno/api/kyverno/v2alpha1"
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engineapi "github.com/kyverno/kyverno/pkg/engine/api"
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corev1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
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"k8s.io/apimachinery/pkg/types"
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)
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func NewPolicyFailEvent(source Source, reason Reason, engineResponse engineapi.EngineResponse, ruleResp engineapi.RuleResponse, blocked bool) Info {
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action := ResourcePassed
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if blocked {
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action = ResourceBlocked
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}
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pol := engineResponse.Policy()
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regarding := corev1.ObjectReference{
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APIVersion: pol.GetAPIVersion(),
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Kind: pol.GetKind(),
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Name: pol.GetName(),
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Namespace: pol.GetNamespace(),
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UID: pol.MetaObject().GetUID(),
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}
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related := engineResponse.GetResourceSpec()
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return Info{
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Regarding: regarding,
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Related: &corev1.ObjectReference{
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APIVersion: related.APIVersion,
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Kind: related.Kind,
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Name: related.Name,
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Namespace: related.Namespace,
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UID: types.UID(related.UID),
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},
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Reason: reason,
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Source: source,
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Message: buildPolicyEventMessage(ruleResp, engineResponse.GetResourceSpec(), blocked),
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Action: action,
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}
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}
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func buildPolicyEventMessage(resp engineapi.RuleResponse, resource engineapi.ResourceSpec, blocked bool) string {
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var b strings.Builder
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if resource.Namespace != "" {
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fmt.Fprintf(&b, "%s %s/%s", resource.Kind, resource.Namespace, resource.Name)
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} else {
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fmt.Fprintf(&b, "%s %s", resource.Kind, resource.Name)
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}
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fmt.Fprintf(&b, ": [%s] %s", resp.Name(), resp.Status())
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if blocked {
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fmt.Fprintf(&b, " (blocked)")
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}
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if resp.Message() != "" {
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fmt.Fprintf(&b, "; %s", resp.Message())
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}
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return b.String()
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}
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func NewPolicyAppliedEvent(source Source, engineResponse engineapi.EngineResponse) Info {
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resource := engineResponse.Resource
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var bldr strings.Builder
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defer bldr.Reset()
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var res string
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if resource.GetNamespace() != "" {
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res = fmt.Sprintf("%s %s/%s", resource.GetKind(), resource.GetNamespace(), resource.GetName())
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} else {
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res = fmt.Sprintf("%s %s", resource.GetKind(), resource.GetName())
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}
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var action Action
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policy := engineResponse.Policy()
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if policy.GetType() == engineapi.KyvernoPolicyType {
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pol := engineResponse.Policy().AsKyvernoPolicy()
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hasValidate := pol.GetSpec().HasValidate()
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hasVerifyImages := pol.GetSpec().HasVerifyImages()
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hasMutate := pol.GetSpec().HasMutate()
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if hasValidate || hasVerifyImages {
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fmt.Fprintf(&bldr, "%s: pass", res)
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action = ResourcePassed
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} else if hasMutate {
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fmt.Fprintf(&bldr, "%s is successfully mutated", res)
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action = ResourceMutated
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}
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} else {
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fmt.Fprintf(&bldr, "%s: pass", res)
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action = ResourcePassed
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}
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regarding := corev1.ObjectReference{
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APIVersion: policy.GetAPIVersion(),
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Kind: policy.GetKind(),
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Name: policy.GetName(),
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Namespace: policy.GetNamespace(),
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UID: policy.MetaObject().GetUID(),
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}
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related := engineResponse.GetResourceSpec()
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return Info{
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Regarding: regarding,
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Related: &corev1.ObjectReference{
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APIVersion: related.APIVersion,
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Kind: related.Kind,
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Name: related.Name,
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Namespace: related.Namespace,
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UID: types.UID(related.UID),
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},
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Reason: PolicyApplied,
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Source: source,
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Message: bldr.String(),
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Action: action,
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}
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}
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func NewResourceViolationEvent(source Source, reason Reason, engineResponse engineapi.EngineResponse, ruleResp engineapi.RuleResponse) Info {
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var bldr strings.Builder
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defer bldr.Reset()
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pol := engineResponse.Policy()
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fmt.Fprintf(&bldr, "policy %s/%s %s: %s", pol.GetName(),
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ruleResp.Name(), ruleResp.Status(), ruleResp.Message())
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resource := engineResponse.GetResourceSpec()
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regarding := corev1.ObjectReference{
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APIVersion: resource.APIVersion,
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Kind: resource.Kind,
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Name: resource.Name,
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Namespace: resource.Namespace,
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UID: types.UID(resource.UID),
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}
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return Info{
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Regarding: regarding,
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Reason: reason,
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Source: source,
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Message: bldr.String(),
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Action: ResourcePassed,
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}
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}
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func NewResourceGenerationEvent(policy, rule string, source Source, resource kyvernov1.ResourceSpec) Info {
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msg := fmt.Sprintf("Created %s %s as a result of applying policy %s/%s", resource.GetKind(), resource.GetName(), policy, rule)
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regarding := corev1.ObjectReference{
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APIVersion: resource.APIVersion,
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Kind: resource.Kind,
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Name: resource.Name,
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Namespace: resource.Namespace,
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UID: resource.UID,
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}
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return Info{
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Regarding: regarding,
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Source: source,
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Reason: PolicyApplied,
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Message: msg,
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Action: None,
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}
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}
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func NewBackgroundFailedEvent(err error, policy kyvernov1.PolicyInterface, rule string, source Source, resource kyvernov1.ResourceSpec) []Info {
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var events []Info
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regarding := corev1.ObjectReference{
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// TODO: iirc it's not safe to assume api version is set
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APIVersion: "kyverno.io/v1",
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Kind: policy.GetKind(),
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Name: policy.GetName(),
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Namespace: policy.GetNamespace(),
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UID: policy.GetUID(),
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}
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events = append(events, Info{
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Regarding: regarding,
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Related: &corev1.ObjectReference{
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APIVersion: resource.APIVersion,
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Kind: resource.Kind,
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Name: resource.Name,
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Namespace: resource.Namespace,
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UID: resource.UID,
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},
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Source: source,
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Reason: PolicyError,
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Message: fmt.Sprintf("policy %s/%s error: %v", policy.GetName(), rule, err),
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Action: None,
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})
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return events
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}
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func NewBackgroundSuccessEvent(source Source, policy kyvernov1.PolicyInterface, resources []kyvernov1.ResourceSpec) []Info {
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var events []Info
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msg := "resource generated"
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action := ResourceGenerated
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if source == MutateExistingController {
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msg = "resource mutated"
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action = ResourceMutated
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}
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regarding := corev1.ObjectReference{
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// TODO: iirc it's not safe to assume api version is set
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APIVersion: "kyverno.io/v1",
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Kind: policy.GetKind(),
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Name: policy.GetName(),
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Namespace: policy.GetNamespace(),
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UID: policy.GetUID(),
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}
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for _, res := range resources {
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events = append(events, Info{
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Regarding: regarding,
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Related: &corev1.ObjectReference{
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APIVersion: res.APIVersion,
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Kind: res.Kind,
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Name: res.Name,
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Namespace: res.Namespace,
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UID: res.UID,
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},
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Source: source,
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Reason: PolicyApplied,
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Message: msg,
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Action: action,
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})
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}
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return events
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}
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func NewPolicyExceptionEvents(engineResponse engineapi.EngineResponse, ruleResp engineapi.RuleResponse, source Source) []Info {
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exception := ruleResp.Exception()
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exceptionName, exceptionNamespace := exception.GetName(), exception.GetNamespace()
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policyMessage := fmt.Sprintf("resource %s was skipped from rule %s due to policy exception %s/%s", resourceKey(engineResponse.PatchedResource), ruleResp.Name(), exceptionNamespace, exceptionName)
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pol := engineResponse.Policy().AsKyvernoPolicy()
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var exceptionMessage string
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if pol.GetNamespace() == "" {
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exceptionMessage = fmt.Sprintf("resource %s was skipped from policy rule %s/%s", resourceKey(engineResponse.PatchedResource), pol.GetName(), ruleResp.Name())
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} else {
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exceptionMessage = fmt.Sprintf("resource %s was skipped from policy rule %s/%s/%s", resourceKey(engineResponse.PatchedResource), pol.GetNamespace(), pol.GetName(), ruleResp.Name())
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}
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regarding := corev1.ObjectReference{
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// TODO: iirc it's not safe to assume api version is set
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APIVersion: "kyverno.io/v1",
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Kind: pol.GetKind(),
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Name: pol.GetName(),
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Namespace: pol.GetNamespace(),
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UID: pol.GetUID(),
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}
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related := engineResponse.GetResourceSpec()
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policyEvent := Info{
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Regarding: regarding,
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Related: &corev1.ObjectReference{
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APIVersion: related.APIVersion,
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Kind: related.Kind,
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Name: related.Name,
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Namespace: related.Namespace,
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UID: types.UID(related.UID),
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},
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Reason: PolicySkipped,
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Message: policyMessage,
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Source: source,
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Action: ResourcePassed,
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}
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exceptionEvent := Info{
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Regarding: corev1.ObjectReference{
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// TODO: iirc it's not safe to assume api version is set
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APIVersion: "kyverno.io/v2",
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Kind: "PolicyException",
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Name: exceptionName,
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Namespace: exceptionNamespace,
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UID: exception.GetUID(),
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},
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Related: &corev1.ObjectReference{
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APIVersion: related.APIVersion,
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Kind: related.Kind,
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Name: related.Name,
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Namespace: related.Namespace,
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UID: types.UID(related.UID),
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},
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Reason: PolicySkipped,
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Message: exceptionMessage,
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Source: source,
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Action: ResourcePassed,
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}
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return []Info{policyEvent, exceptionEvent}
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}
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func NewCleanupPolicyEvent(policy kyvernov2alpha1.CleanupPolicyInterface, resource unstructured.Unstructured, err error) Info {
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regarding := corev1.ObjectReference{
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// TODO: iirc it's not safe to assume api version is set
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APIVersion: "kyverno.io/v2beta1",
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Kind: policy.GetKind(),
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Name: policy.GetName(),
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Namespace: policy.GetNamespace(),
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UID: policy.GetUID(),
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}
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related := &corev1.ObjectReference{
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APIVersion: resource.GetAPIVersion(),
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Kind: resource.GetKind(),
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Namespace: resource.GetNamespace(),
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Name: resource.GetName(),
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}
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if err == nil {
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return Info{
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Regarding: regarding,
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Related: related,
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Source: CleanupController,
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Action: ResourceCleanedUp,
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Reason: PolicyApplied,
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Message: fmt.Sprintf("successfully cleaned up the target resource %v/%v/%v", resource.GetKind(), resource.GetNamespace(), resource.GetName()),
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}
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} else {
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return Info{
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Regarding: regarding,
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Related: related,
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Source: CleanupController,
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Action: None,
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Reason: PolicyError,
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Message: fmt.Sprintf("failed to clean up the target resource %v/%v/%v: %v", resource.GetKind(), resource.GetNamespace(), resource.GetName(), err.Error()),
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}
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}
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}
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func NewValidatingAdmissionPolicyEvent(policy kyvernov1.PolicyInterface, vapName, vapBindingName string) []Info {
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regarding := corev1.ObjectReference{
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// TODO: iirc it's not safe to assume api version is set
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APIVersion: "kyverno.io/v1",
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Kind: policy.GetKind(),
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Name: policy.GetName(),
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Namespace: policy.GetNamespace(),
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UID: policy.GetUID(),
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}
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vapEvent := Info{
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Regarding: regarding,
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Related: &corev1.ObjectReference{
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APIVersion: "admissionregistration.k8s.io/v1alpha1",
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Kind: "ValidatingAdmissionPolicy",
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Name: vapName,
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},
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Source: GeneratePolicyController,
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Action: ResourceGenerated,
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Reason: PolicyApplied,
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Message: fmt.Sprintf("successfully generated validating admission policy %s from policy %s", vapName, policy.GetName()),
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}
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vapBindingEvent := Info{
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Regarding: regarding,
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Related: &corev1.ObjectReference{
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APIVersion: "admissionregistration.k8s.io/v1alpha1",
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Kind: "ValidatingAdmissionPolicyBinding",
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Name: vapBindingName,
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},
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Source: GeneratePolicyController,
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Action: ResourceGenerated,
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Reason: PolicyApplied,
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Message: fmt.Sprintf("successfully generated validating admission policy binding %s from policy %s", vapBindingName, policy.GetName()),
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}
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return []Info{vapEvent, vapBindingEvent}
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}
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func NewFailedEvent(err error, policy, rule string, source Source, resource kyvernov1.ResourceSpec) Info {
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return Info{
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Regarding: corev1.ObjectReference{
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APIVersion: resource.APIVersion,
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Kind: resource.Kind,
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Name: resource.Name,
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Namespace: resource.Namespace,
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UID: resource.UID,
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},
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Source: source,
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Reason: PolicyError,
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Message: fmt.Sprintf("policy %s/%s error: %v", policy, rule, err),
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Action: None,
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}
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}
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func resourceKey(resource unstructured.Unstructured) string {
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if resource.GetNamespace() != "" {
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return strings.Join([]string{resource.GetKind(), resource.GetNamespace(), resource.GetName()}, "/")
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}
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return strings.Join([]string{resource.GetKind(), resource.GetName()}, "/")
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}
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