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/
pod_aggregator.go
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/
pod_aggregator.go
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// Copyright 2015 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package processors
import (
"fmt"
"github.com/golang/glog"
"k8s.io/heapster/metrics/core"
)
var LabelsToPopulate = []core.LabelDescriptor{
core.LabelPodId,
core.LabelPodName,
core.LabelPodNamespace,
core.LabelNamespaceName,
core.LabelPodNamespaceUID,
core.LabelHostname,
core.LabelHostID,
}
type PodAggregator struct {
}
func (this *PodAggregator) Name() string {
return "pod_aggregator"
}
func (this *PodAggregator) Process(batch *core.DataBatch) (*core.DataBatch, error) {
result := core.DataBatch{
Timestamp: batch.Timestamp,
MetricSets: make(map[string]*core.MetricSet),
}
for key, metricSet := range batch.MetricSets {
result.MetricSets[key] = metricSet
if metricSetType, found := metricSet.Labels[core.LabelMetricSetType.Key]; found && metricSetType == core.MetricSetTypePodContainer {
// Aggregating containers
podName, found := metricSet.Labels[core.LabelPodName.Key]
ns, found2 := metricSet.Labels[core.LabelNamespaceName.Key]
if found && found2 {
podKey := core.PodKey(ns, podName)
pod, found := result.MetricSets[podKey]
if !found {
pod, found = batch.MetricSets[podKey]
if !found {
glog.V(2).Infof("Pod not found adding %s", podKey)
pod = this.podMetricSet(metricSet.Labels)
result.MetricSets[podKey] = pod
}
}
for metricName, metricValue := range metricSet.MetricValues {
aggregatedValue, found := pod.MetricValues[metricName]
if found {
if aggregatedValue.ValueType != metricValue.ValueType {
glog.Errorf("PodAggregator: inconsistent type in %s", metricName)
continue
}
switch aggregatedValue.ValueType {
case core.ValueInt64:
aggregatedValue.IntValue += metricValue.IntValue
case core.ValueFloat:
aggregatedValue.FloatValue += metricValue.FloatValue
default:
return nil, fmt.Errorf("PodAggregator: type not supported in %s", metricName)
}
} else {
aggregatedValue = metricValue
}
pod.MetricValues[metricName] = aggregatedValue
}
} else {
glog.Errorf("No namespace and/or pod info in container %s: %v", key, metricSet.Labels)
continue
}
}
}
return &result, nil
}
func (this *PodAggregator) podMetricSet(labels map[string]string) *core.MetricSet {
newLabels := map[string]string{
core.LabelMetricSetType.Key: core.MetricSetTypePod,
}
for _, l := range LabelsToPopulate {
if val, ok := labels[l.Key]; ok {
newLabels[l.Key] = val
}
}
return &core.MetricSet{
MetricValues: make(map[string]core.MetricValue),
Labels: newLabels,
}
}