Fixed panic in GCM data source implementation in Initial Resources

The panic occured when there was no historical data to make prediction

Fixed panic in GCM data source implementation in Initial Resources
ddcb6051 · Piotr Szczesniak · 1a641027 · ddcb6051
Commit ddcb6051 authored Oct 05, 2015 by Piotr Szczesniak
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gcm.go plugin/pkg/admission/initialresources/gcm.go +3 -0

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--- a/plugin/pkg/admission/initialresources/gcm.go
+++ b/plugin/pkg/admission/initialresources/gcm.go
@@ -122,6 +122,9 @@ func (s *gcmSource) GetUsagePercentile(kind api.ResourceName, perc int64, image,
 	}
 	count := len(rawSamples)
+	if count == 0 {
+		return 0, 0, nil
+	}
 	sort.Ints(rawSamples)
 	usageIndex := int64(math.Ceil(float64(count)*9/10)) - 1
 	usage := rawSamples[usageIndex]