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/
namespace_aggregator.go
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/
namespace_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 (
"github.com/golang/glog"
"k8s.io/heapster/metrics/core"
)
type NamespaceAggregator struct {
MetricsToAggregate []string
}
func (this *NamespaceAggregator) Name() string {
return "namespace_aggregator"
}
func (this *NamespaceAggregator) Process(batch *core.DataBatch) (*core.DataBatch, error) {
namespaces := make(map[string]*core.MetricSet)
for key, metricSet := range batch.MetricSets {
if metricSetType, found := metricSet.Labels[core.LabelMetricSetType.Key]; found && metricSetType == core.MetricSetTypePod {
// Aggregating pods
if namespaceName, found := metricSet.Labels[core.LabelNamespaceName.Key]; found {
namespaceKey := core.NamespaceKey(namespaceName)
namespace, found := namespaces[namespaceKey]
if !found {
if nsFromBatch, found := batch.MetricSets[namespaceKey]; found {
namespace = nsFromBatch
} else {
namespace = namespaceMetricSet(namespaceName, metricSet.Labels[core.LabelPodNamespaceUID.Key])
namespaces[namespaceKey] = namespace
}
}
if err := aggregate(metricSet, namespace, this.MetricsToAggregate); err != nil {
return nil, err
}
} else {
glog.Errorf("No namespace info in pod %s: %v", key, metricSet.Labels)
}
}
}
for key, val := range namespaces {
batch.MetricSets[key] = val
}
return batch, nil
}
func namespaceMetricSet(namespaceName, uid string) *core.MetricSet {
return &core.MetricSet{
MetricValues: make(map[string]core.MetricValue),
Labels: map[string]string{
core.LabelMetricSetType.Key: core.MetricSetTypeNamespace,
core.LabelNamespaceName.Key: namespaceName,
core.LabelPodNamespaceUID.Key: uid,
},
}
}