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builder.go
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builder.go
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package vulnerabilityreport
import (
"fmt"
"strings"
"time"
"github.com/aquasecurity/starboard/pkg/apis/aquasecurity/v1alpha1"
"github.com/aquasecurity/starboard/pkg/docker"
"github.com/aquasecurity/starboard/pkg/kube"
"github.com/aquasecurity/starboard/pkg/starboard"
batchv1 "k8s.io/api/batch/v1"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/validation"
"k8s.io/utils/pointer"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
)
type ScanJobBuilder struct {
plugin Plugin
pluginContext starboard.PluginContext
timeout time.Duration
object client.Object
credentials map[string]docker.Auth
tolerations []corev1.Toleration
annotations map[string]string
}
func NewScanJobBuilder() *ScanJobBuilder {
return &ScanJobBuilder{}
}
func (s *ScanJobBuilder) WithPlugin(plugin Plugin) *ScanJobBuilder {
s.plugin = plugin
return s
}
func (s *ScanJobBuilder) WithPluginContext(pluginContext starboard.PluginContext) *ScanJobBuilder {
s.pluginContext = pluginContext
return s
}
func (s *ScanJobBuilder) WithTimeout(timeout time.Duration) *ScanJobBuilder {
s.timeout = timeout
return s
}
func (s *ScanJobBuilder) WithObject(object client.Object) *ScanJobBuilder {
s.object = object
return s
}
func (s *ScanJobBuilder) WithTolerations(tolerations []corev1.Toleration) *ScanJobBuilder {
s.tolerations = tolerations
return s
}
func (s *ScanJobBuilder) WithAnnotations(annotations map[string]string) *ScanJobBuilder {
s.annotations = annotations
return s
}
func (s *ScanJobBuilder) WithCredentials(credentials map[string]docker.Auth) *ScanJobBuilder {
s.credentials = credentials
return s
}
func (s *ScanJobBuilder) Get() (*batchv1.Job, []*corev1.Secret, error) {
spec, err := kube.GetPodSpec(s.object)
if err != nil {
return nil, nil, err
}
templateSpec, secrets, err := s.plugin.GetScanJobSpec(s.pluginContext, s.object, s.credentials)
if err != nil {
return nil, nil, err
}
templateSpec.Tolerations = append(templateSpec.Tolerations, s.tolerations...)
containerImagesAsJSON, err := kube.GetContainerImagesFromPodSpec(spec).AsJSON()
if err != nil {
return nil, nil, err
}
podSpecHash := kube.ComputeHash(spec)
labels := map[string]string{
starboard.LabelResourceSpecHash: podSpecHash,
starboard.LabelK8SAppManagedBy: starboard.AppStarboard,
starboard.LabelVulnerabilityReportScanner: s.pluginContext.GetName(),
}
job := &batchv1.Job{
ObjectMeta: metav1.ObjectMeta{
Name: GetScanJobName(s.object),
Namespace: s.pluginContext.GetNamespace(),
Labels: labels,
Annotations: map[string]string{
starboard.AnnotationContainerImages: containerImagesAsJSON,
},
},
Spec: batchv1.JobSpec{
BackoffLimit: pointer.Int32Ptr(0),
Completions: pointer.Int32Ptr(1),
ActiveDeadlineSeconds: kube.GetActiveDeadlineSeconds(s.timeout),
Template: corev1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: labels,
Annotations: s.annotations,
},
Spec: templateSpec,
},
},
}
err = kube.ObjectToObjectMetadata(s.object, &job.ObjectMeta)
if err != nil {
return nil, nil, err
}
err = kube.ObjectToObjectMetadata(s.object, &job.Spec.Template.ObjectMeta)
if err != nil {
return nil, nil, err
}
return job, secrets, nil
}
func GetScanJobName(obj client.Object) string {
return fmt.Sprintf("scan-vulnerabilityreport-%s", kube.ComputeHash(kube.ObjectRef{
Kind: kube.Kind(obj.GetObjectKind().GroupVersionKind().Kind),
Namespace: obj.GetNamespace(),
Name: obj.GetName(),
}))
}
type ReportBuilder struct {
scheme *runtime.Scheme
controller client.Object
container string
hash string
data v1alpha1.VulnerabilityReportData
reportTTL *time.Duration
}
func NewReportBuilder(scheme *runtime.Scheme) *ReportBuilder {
return &ReportBuilder{
scheme: scheme,
}
}
func (b *ReportBuilder) Controller(controller client.Object) *ReportBuilder {
b.controller = controller
return b
}
func (b *ReportBuilder) Container(name string) *ReportBuilder {
b.container = name
return b
}
func (b *ReportBuilder) PodSpecHash(hash string) *ReportBuilder {
b.hash = hash
return b
}
func (b *ReportBuilder) Data(data v1alpha1.VulnerabilityReportData) *ReportBuilder {
b.data = data
return b
}
func (b *ReportBuilder) ReportTTL(ttl *time.Duration) *ReportBuilder {
b.reportTTL = ttl
return b
}
func (b *ReportBuilder) reportName() string {
kind := b.controller.GetObjectKind().GroupVersionKind().Kind
name := b.controller.GetName()
reportName := fmt.Sprintf("%s-%s-%s", strings.ToLower(kind), name, b.container)
if len(validation.IsValidLabelValue(reportName)) == 0 {
return reportName
}
return fmt.Sprintf("%s-%s", strings.ToLower(kind), kube.ComputeHash(name+"-"+b.container))
}
func (b *ReportBuilder) Get() (v1alpha1.VulnerabilityReport, error) {
labels := map[string]string{
starboard.LabelContainerName: b.container,
}
if b.hash != "" {
labels[starboard.LabelResourceSpecHash] = b.hash
}
report := v1alpha1.VulnerabilityReport{
ObjectMeta: metav1.ObjectMeta{
Name: b.reportName(),
Namespace: b.controller.GetNamespace(),
Labels: labels,
},
Report: b.data,
}
if b.reportTTL != nil {
report.Annotations = map[string]string{
v1alpha1.TTLReportAnnotation: b.reportTTL.String(),
}
}
err := kube.ObjectToObjectMetadata(b.controller, &report.ObjectMeta)
if err != nil {
return v1alpha1.VulnerabilityReport{}, err
}
err = controllerutil.SetControllerReference(b.controller, &report, b.scheme)
if err != nil {
return v1alpha1.VulnerabilityReport{}, fmt.Errorf("setting controller reference: %w", err)
}
// The OwnerReferencesPermissionsEnforcement admission controller protects the
// access to metadata.ownerReferences[x].blockOwnerDeletion of an object, so
// that only users with "update" permission to the finalizers subresource of the
// referenced owner can change it.
// We set metadata.ownerReferences[x].blockOwnerDeletion to false so that
// additional RBAC permissions are not required when the OwnerReferencesPermissionsEnforcement
// is enabled.
// See https://kubernetes.io/docs/reference/access-authn-authz/admission-controllers/#ownerreferencespermissionenforcement
report.OwnerReferences[0].BlockOwnerDeletion = pointer.BoolPtr(false)
return report, nil
}