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report.go
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report.go
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package apply
import (
"encoding/json"
"fmt"
"strings"
report "github.com/kyverno/kyverno/pkg/api/policyreport/v1alpha1"
"github.com/kyverno/kyverno/pkg/engine/response"
"github.com/kyverno/kyverno/pkg/engine/utils"
engineutils "github.com/kyverno/kyverno/pkg/engine/utils"
"github.com/kyverno/kyverno/pkg/policyreport"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/types"
log "sigs.k8s.io/controller-runtime/pkg/log"
)
const clusterpolicyreport = "clusterpolicyreport"
// resps is the engine responses generated for a single policy
func buildPolicyReports(resps []*response.EngineResponse, skippedPolicies []SkippedPolicy) (res []*unstructured.Unstructured) {
var raw []byte
var err error
for _, sp := range skippedPolicies {
for _, r := range sp.Rules {
result := []*report.PolicyReportResult{
{
Message: fmt.Sprintln("skipped policy with variables -", sp.Variable),
Policy: sp.Name,
Rule: r.Name,
Status: "skip",
},
}
report := &report.PolicyReport{
TypeMeta: metav1.TypeMeta{
APIVersion: report.SchemeGroupVersion.String(),
Kind: "PolicyReport",
},
Results: result,
}
if raw, err = json.Marshal(report); err != nil {
log.Log.V(3).Info("failed to serialize policy report", "error", err)
continue
}
reportUnstructured, err := engineutils.ConvertToUnstructured(raw)
if err != nil {
log.Log.V(3).Info("failed to convert policy report", "error", err)
continue
}
res = append(res, reportUnstructured)
}
}
resultsMap := buildPolicyResults(resps)
for scope, result := range resultsMap {
if scope == clusterpolicyreport {
report := &report.ClusterPolicyReport{
TypeMeta: metav1.TypeMeta{
APIVersion: report.SchemeGroupVersion.String(),
Kind: "ClusterPolicyReport",
},
Results: result,
Summary: calculateSummary(result),
}
report.SetName(scope)
if raw, err = json.Marshal(report); err != nil {
log.Log.V(3).Info("failed to serialize policy report", "name", report.Name, "scope", scope, "error", err)
}
} else {
report := &report.PolicyReport{
TypeMeta: metav1.TypeMeta{
APIVersion: report.SchemeGroupVersion.String(),
Kind: "PolicyReport",
},
Results: result,
Summary: calculateSummary(result),
}
ns := strings.ReplaceAll(scope, "policyreport-ns-", "")
report.SetName(scope)
report.SetNamespace(ns)
if raw, err = json.Marshal(report); err != nil {
log.Log.V(3).Info("failed to serialize policy report", "name", report.Name, "scope", scope, "error", err)
}
}
reportUnstructured, err := engineutils.ConvertToUnstructured(raw)
if err != nil {
log.Log.V(3).Info("failed to convert policy report", "scope", scope, "error", err)
continue
}
res = append(res, reportUnstructured)
}
return
}
// buildPolicyResults returns a string-PolicyReportResult map
// the key of the map is one of "clusterpolicyreport", "policyreport-ns-<namespace>"
func buildPolicyResults(resps []*response.EngineResponse) map[string][]*report.PolicyReportResult {
results := make(map[string][]*report.PolicyReportResult)
infos := policyreport.GeneratePRsFromEngineResponse(resps, log.Log)
for _, info := range infos {
var appname string
ns := info.Namespace
if ns != "" {
appname = fmt.Sprintf("policyreport-ns-%s", ns)
} else {
appname = fmt.Sprintf(clusterpolicyreport)
}
for _, infoResult := range info.Results {
for _, rule := range infoResult.Rules {
if rule.Type != utils.Validation.String() {
continue
}
result := report.PolicyReportResult{
Policy: info.PolicyName,
Resources: []*corev1.ObjectReference{
{
Kind: infoResult.Resource.Kind,
Namespace: infoResult.Resource.Namespace,
APIVersion: infoResult.Resource.APIVersion,
Name: infoResult.Resource.Name,
UID: types.UID(infoResult.Resource.UID),
},
},
Scored: true,
}
result.Rule = rule.Name
result.Message = rule.Message
result.Status = report.PolicyStatus(rule.Check)
results[appname] = append(results[appname], &result)
}
}
}
return results
}
func mergeSucceededResults(results map[string][]*report.PolicyReportResult) map[string][]*report.PolicyReportResult {
resultsNew := make(map[string][]*report.PolicyReportResult)
for scope, scopedResults := range results {
resourcesMap := make(map[string]*report.PolicyReportResult)
for _, result := range scopedResults {
if result.Status != report.PolicyStatus("pass") {
resultsNew[scope] = append(resultsNew[scope], result)
continue
}
key := fmt.Sprintf("%s/%s", result.Policy, result.Rule)
if r, ok := resourcesMap[key]; !ok {
resourcesMap[key] = &report.PolicyReportResult{}
resourcesMap[key] = result
} else {
r.Resources = append(r.Resources, result.Resources...)
resourcesMap[key] = r
}
}
for k, v := range resourcesMap {
names := strings.Split(k, "/")
if len(names) != 2 {
continue
}
r := &report.PolicyReportResult{
Policy: names[0],
Rule: names[1],
Resources: v.Resources,
Status: report.PolicyStatus(v.Status),
}
resultsNew[scope] = append(resultsNew[scope], r)
}
}
return resultsNew
}
func calculateSummary(results []*report.PolicyReportResult) (summary report.PolicyReportSummary) {
for _, res := range results {
switch string(res.Status) {
case report.StatusPass:
summary.Pass++
case report.StatusFail:
summary.Fail++
case "warn":
summary.Warn++
case "error":
summary.Error++
case "skip":
summary.Skip++
}
}
return
}