75 lines
2.4 KiB
Go
75 lines
2.4 KiB
Go
package work
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import (
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"context"
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"encoding/json"
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"net/http"
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"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/klog/v2"
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"sigs.k8s.io/controller-runtime/pkg/webhook/admission"
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workv1alpha1 "github.com/karmada-io/karmada/pkg/apis/work/v1alpha1"
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"github.com/karmada-io/karmada/pkg/resourceinterpreter/defaultinterpreter/prune"
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)
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// MutatingAdmission mutates API request if necessary.
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type MutatingAdmission struct {
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decoder *admission.Decoder
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}
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// Check if our MutatingAdmission implements necessary interface
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var _ admission.Handler = &MutatingAdmission{}
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var _ admission.DecoderInjector = &MutatingAdmission{}
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// Handle yields a response to an AdmissionRequest.
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func (a *MutatingAdmission) Handle(ctx context.Context, req admission.Request) admission.Response {
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work := &workv1alpha1.Work{}
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err := a.decoder.Decode(req, work)
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if err != nil {
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return admission.Errored(http.StatusBadRequest, err)
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}
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klog.V(2).Infof("Mutating work(%s) for request: %s", work.Name, req.Operation)
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var manifests []workv1alpha1.Manifest
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for _, manifest := range work.Spec.Workload.Manifests {
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workloadObj := &unstructured.Unstructured{}
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err := json.Unmarshal(manifest.Raw, workloadObj)
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if err != nil {
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klog.Errorf("Failed to unmarshal work(%s) manifest to Unstructured", work.Name)
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return admission.Errored(http.StatusInternalServerError, err)
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}
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err = prune.RemoveIrrelevantField(workloadObj, prune.RemoveJobTTLSeconds)
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if err != nil {
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klog.Errorf("Failed to remove irrelevant field for work(%s): %v", work.Name, err)
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return admission.Errored(http.StatusInternalServerError, err)
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}
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workloadJSON, err := workloadObj.MarshalJSON()
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if err != nil {
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klog.Errorf("Failed to marshal workload of work(%s)", work.Name)
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return admission.Errored(http.StatusInternalServerError, err)
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}
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manifests = append(manifests, workv1alpha1.Manifest{RawExtension: runtime.RawExtension{Raw: workloadJSON}})
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}
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work.Spec.Workload.Manifests = manifests
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marshaledBytes, err := json.Marshal(work)
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if err != nil {
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return admission.Errored(http.StatusInternalServerError, err)
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}
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return admission.PatchResponseFromRaw(req.Object.Raw, marshaledBytes)
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}
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// InjectDecoder implements admission.DecoderInjector interface.
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// A decoder will be automatically injected.
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func (a *MutatingAdmission) InjectDecoder(d *admission.Decoder) error {
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a.decoder = d
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return nil
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}
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