metrics_resource_adder.go

Documentation: k8s.io/kubectl/pkg/metricsutil

     1  /*
     2  Copyright 2021 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package metricsutil
    18  
    19  import (
    20  	corev1 "k8s.io/api/core/v1"
    21  	metricsapi "k8s.io/metrics/pkg/apis/metrics"
    22  )
    23  
    24  type ResourceAdder struct {
    25  	resources []corev1.ResourceName
    26  	total     corev1.ResourceList
    27  }
    28  
    29  func NewResourceAdder(resources []corev1.ResourceName) *ResourceAdder {
    30  	return &ResourceAdder{
    31  		resources: resources,
    32  		total:     make(corev1.ResourceList),
    33  	}
    34  }
    35  
    36  // AddPodMetrics adds each pod metric to the total
    37  func (adder *ResourceAdder) AddPodMetrics(m *metricsapi.PodMetrics) {
    38  	for _, c := range m.Containers {
    39  		for _, res := range adder.resources {
    40  			total := adder.total[res]
    41  			total.Add(c.Usage[res])
    42  			adder.total[res] = total
    43  		}
    44  	}
    45  }
    46
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