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Signed-off-by: Avinash Patnala <[email protected]>
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Avinash Patnala
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Oct 23, 2024
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| package transform | ||
|
|
||
| import ( | ||
| "errors" | ||
| "sync" | ||
|
|
||
| "github.com/go-logr/logr" | ||
| "k8s.io/apimachinery/pkg/runtime/schema" | ||
| "k8s.io/client-go/kubernetes" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
|
|
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| admissionregistrationv1 "k8s.io/api/admissionregistration/v1" | ||
| admissionregistrationv1beta1 "k8s.io/api/admissionregistration/v1beta1" | ||
| rest "k8s.io/client-go/rest" | ||
| ) | ||
|
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| var vapMux sync.RWMutex | ||
|
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| var VapAPIEnabled *bool | ||
|
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| var GroupVersion *schema.GroupVersion | ||
|
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| func IsVapAPIEnabled(log *logr.Logger) (bool, *schema.GroupVersion) { | ||
| vapMux.RLock() | ||
| if VapAPIEnabled != nil { | ||
| apiEnabled, gvk := *VapAPIEnabled, GroupVersion | ||
| vapMux.RUnlock() | ||
| return apiEnabled, gvk | ||
| } | ||
|
|
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| vapMux.RUnlock() | ||
| vapMux.Lock() | ||
| defer vapMux.Unlock() | ||
|
|
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| if VapAPIEnabled != nil { | ||
| return *VapAPIEnabled, GroupVersion | ||
| } | ||
| config, err := rest.InClusterConfig() | ||
| if err != nil { | ||
| log.Info("IsVapAPIEnabled InClusterConfig", "error", err) | ||
| VapAPIEnabled = new(bool) | ||
| *VapAPIEnabled = false | ||
| return false, nil | ||
| } | ||
| clientset, err := kubernetes.NewForConfig(config) | ||
| if err != nil { | ||
| log.Info("IsVapAPIEnabled NewForConfig", "error", err) | ||
| *VapAPIEnabled = false | ||
| return false, nil | ||
| } | ||
|
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| groupVersion := admissionregistrationv1.SchemeGroupVersion | ||
| resList, err := clientset.Discovery().ServerResourcesForGroupVersion(groupVersion.String()) | ||
| if err == nil { | ||
| for i := 0; i < len(resList.APIResources); i++ { | ||
| if resList.APIResources[i].Name == "validatingadmissionpolicies" { | ||
| VapAPIEnabled = new(bool) | ||
| *VapAPIEnabled = true | ||
| GroupVersion = &groupVersion | ||
| return true, GroupVersion | ||
| } | ||
| } | ||
| } | ||
|
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| groupVersion = admissionregistrationv1beta1.SchemeGroupVersion | ||
| resList, err = clientset.Discovery().ServerResourcesForGroupVersion(groupVersion.String()) | ||
| if err == nil { | ||
| for i := 0; i < len(resList.APIResources); i++ { | ||
| if resList.APIResources[i].Name == "validatingadmissionpolicies" { | ||
| VapAPIEnabled = new(bool) | ||
| *VapAPIEnabled = true | ||
| GroupVersion = &groupVersion | ||
| return true, GroupVersion | ||
| } | ||
| } | ||
| } | ||
|
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| log.Error(err, "error checking VAP API availability", "IsVapAPIEnabled", "false") | ||
| VapAPIEnabled = new(bool) | ||
| *VapAPIEnabled = false | ||
| return false, nil | ||
| } | ||
|
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| func VapForVersion(gvk *schema.GroupVersion) (client.Object, error) { | ||
| switch gvk.Version { | ||
| case "v1": | ||
| return &admissionregistrationv1.ValidatingAdmissionPolicy{}, nil | ||
| case "v1beta1": | ||
| return &admissionregistrationv1beta1.ValidatingAdmissionPolicy{}, nil | ||
| default: | ||
| return nil, errors.New("unrecognized version") | ||
| } | ||
| } |