85 lines
2.3 KiB
Go
85 lines
2.3 KiB
Go
package render
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import (
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"fmt"
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"strconv"
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"github.com/derailed/tview"
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autoscalingv1 "k8s.io/api/autoscaling/v1"
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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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)
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// HorizontalPodAutoscaler renders a K8s HorizontalPodAutoscaler to screen.
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type HorizontalPodAutoscaler struct{}
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// ColorerFunc colors a resource row.
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func (HorizontalPodAutoscaler) ColorerFunc() ColorerFunc {
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return DefaultColorer
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}
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// Header returns a header row.
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func (HorizontalPodAutoscaler) Header(ns string) HeaderRow {
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var h HeaderRow
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if isAllNamespace(ns) {
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h = append(h, Header{Name: "NAMESPACE"})
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}
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return append(h,
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Header{Name: "NAME"},
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Header{Name: "REFERENCE"},
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Header{Name: "TARGETS"},
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Header{Name: "MINPODS", Align: tview.AlignRight},
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Header{Name: "MAXPODS", Align: tview.AlignRight},
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Header{Name: "REPLICAS", Align: tview.AlignRight},
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Header{Name: "AGE", Decorator: AgeDecorator},
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)
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}
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// Render renders a K8s resource to screen.
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func (h HorizontalPodAutoscaler) Render(o interface{}, ns string, r *Row) error {
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raw, ok := o.(*unstructured.Unstructured)
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if !ok {
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return fmt.Errorf("Expected HorizontalPodAutoscaler, but got %T", o)
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}
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var hpa autoscalingv1.HorizontalPodAutoscaler
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err := runtime.DefaultUnstructuredConverter.FromUnstructured(raw.Object, &hpa)
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if err != nil {
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return err
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}
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r.ID = MetaFQN(hpa.ObjectMeta)
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r.Fields = make(Fields, 0, len(h.Header(ns)))
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if isAllNamespace(ns) {
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r.Fields = append(r.Fields, hpa.Namespace)
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}
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r.Fields = append(r.Fields,
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hpa.ObjectMeta.Name,
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hpa.Spec.ScaleTargetRef.Name,
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toMetrics(hpa.Spec, hpa.Status),
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strconv.Itoa(int(*hpa.Spec.MinReplicas)),
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strconv.Itoa(int(hpa.Spec.MaxReplicas)),
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strconv.Itoa(int(hpa.Status.CurrentReplicas)),
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toAge(hpa.ObjectMeta.CreationTimestamp),
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)
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return nil
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}
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// ----------------------------------------------------------------------------
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// Helpers...
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func toMetrics(spec autoscalingv1.HorizontalPodAutoscalerSpec, status autoscalingv1.HorizontalPodAutoscalerStatus) string {
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current := "<unknown>"
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if status.CurrentCPUUtilizationPercentage != nil {
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current = strconv.Itoa(int(*status.CurrentCPUUtilizationPercentage)) + "%"
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}
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target := "<unknown>"
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if spec.TargetCPUUtilizationPercentage != nil {
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target = strconv.Itoa(int(*spec.TargetCPUUtilizationPercentage))
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}
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return current + "/" + target + "%"
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}
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