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Merge pull request #22052 from mwielgus/hpa-average

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This commit is contained in:
k8s-merge-robot 2016-03-04 08:38:38 -08:00
commit 18d8e7b756
2 changed files with 61 additions and 6 deletions
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29
pkg/controller/podautoscaler/metrics/metrics_client.go
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@ -74,7 +74,7 @@ type HeapsterMetricsClient struct {
}
var averageFunction = func(metrics heapster.MetricResultList) (intAndFloat, int, time.Time) {
sum, count, timestamp := calculateSumFromLatestSample(metrics)
sum, count, timestamp := calculateSumFromTimeSample(metrics, time.Minute)
result := intAndFloat{0, 0}
if count > 0 {
result.intValue = sum.intValue / int64(count)
@ -218,7 +218,7 @@ func (h *HeapsterMetricsClient) getForPods(metricSpec metricDefinition, namespac
return &sum, timestamp, nil
}
func calculateSumFromLatestSample(metrics heapster.MetricResultList) (sum intAndFloat, count int, timestamp time.Time) {
func calculateSumFromTimeSample(metrics heapster.MetricResultList, duration time.Duration) (sum intAndFloat, count int, timestamp time.Time) {
sum = intAndFloat{0, 0}
count = 0
timestamp = time.Time{}
@ -236,12 +236,29 @@ func calculateSumFromLatestSample(metrics heapster.MetricResultList) (sum intAnd
if oldest == nil || newest.Timestamp.Before(*oldest) {
oldest = &newest.Timestamp
}
intervalSum := intAndFloat{0, 0}
intSumCount := 0
floatSumCount := 0
for _, metricPoint := range metrics.Metrics {
if metricPoint.Timestamp.Add(duration).After(newest.Timestamp) {
intervalSum.intValue += int64(metricPoint.Value)
intSumCount++
if metricPoint.FloatValue != nil {
intervalSum.floatValue += *metricPoint.FloatValue
floatSumCount++
}
}
}
if newest.FloatValue == nil {
sum.intValue += int64(newest.Value)
sum.floatValue += float64(newest.Value)
if intSumCount > 0 {
sum.intValue += int64(intervalSum.intValue / int64(intSumCount))
sum.floatValue += float64(intervalSum.intValue / int64(intSumCount))
}
} else {
sum.intValue += int64(*newest.FloatValue)
sum.floatValue += *newest.FloatValue
if floatSumCount > 0 {
sum.intValue += int64(intervalSum.floatValue / float64(floatSumCount))
sum.floatValue += intervalSum.floatValue / float64(floatSumCount)
}
}
count++
}

38
pkg/controller/podautoscaler/metrics/metrics_client_test.go
View File

@ -413,4 +413,42 @@ func TestCPUEmptyMetricsForOnePod(t *testing.T) {
tc.runTest(t)
}
func TestAggregateSum(t *testing.T) {
//calculateSumFromTimeSample(metrics heapster.MetricResultList, duration time.Duration) (sum intAndFloat, count int, timestamp time.Time) {
now := time.Now()
result := heapster.MetricResultList{
Items: []heapster.MetricResult{
{
Metrics: []heapster.MetricPoint{
{now, 50, nil},
{now.Add(-15 * time.Second), 100, nil},
{now.Add(-60 * time.Second), 100000, nil}},
LatestTimestamp: now,
},
},
}
sum, cnt, _ := calculateSumFromTimeSample(result, time.Minute)
assert.Equal(t, int64(75), sum.intValue)
assert.InEpsilon(t, 75.0, sum.floatValue, 0.1)
assert.Equal(t, 1, cnt)
}
func TestAggregateSumSingle(t *testing.T) {
now := time.Now()
result := heapster.MetricResultList{
Items: []heapster.MetricResult{
{
Metrics: []heapster.MetricPoint{
{now, 50, nil},
{now.Add(-65 * time.Second), 100000, nil}},
LatestTimestamp: now,
},
},
}
sum, cnt, _ := calculateSumFromTimeSample(result, time.Minute)
assert.Equal(t, int64(50), sum.intValue)
assert.InEpsilon(t, 50.0, sum.floatValue, 0.1)
assert.Equal(t, 1, cnt)
}
// TODO: add proper tests for request