github.com/aclisp/heapster@v0.19.2-0.20160613100040-51756f899a96/metrics/processors/node_aggregator.go (about)

     1  // Copyright 2015 Google Inc. All Rights Reserved.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package processors
    16  
    17  import (
    18  	"github.com/golang/glog"
    19  	"k8s.io/heapster/metrics/core"
    20  )
    21  
    22  // Does not add any nodes.
    23  type NodeAggregator struct {
    24  	MetricsToAggregate []string
    25  }
    26  
    27  func (this *NodeAggregator) Name() string {
    28  	return "node_aggregator"
    29  }
    30  
    31  func (this *NodeAggregator) Process(batch *core.DataBatch) (*core.DataBatch, error) {
    32  	for key, metricSet := range batch.MetricSets {
    33  		if metricSetType, found := metricSet.Labels[core.LabelMetricSetType.Key]; found && metricSetType == core.MetricSetTypePod {
    34  			// Aggregating pods
    35  			nodeName, found := metricSet.Labels[core.LabelNodename.Key]
    36  			if nodeName == "" {
    37  				glog.V(8).Infof("Skipping pod %s: no node info", key)
    38  				continue
    39  			}
    40  			if found {
    41  				nodeKey := core.NodeKey(nodeName)
    42  				node, found := batch.MetricSets[nodeKey]
    43  				if !found {
    44  					glog.Warningf("Failed to find node: %s", nodeKey)
    45  				} else if err := aggregate(metricSet, node, this.MetricsToAggregate); err != nil {
    46  					return nil, err
    47  				}
    48  			} else {
    49  				glog.Errorf("No node info in pod %s: %v", key, metricSet.Labels)
    50  			}
    51  		}
    52  	}
    53  	return batch, nil
    54  }