191666d6a3
CRI runtimes do not supply cpu nano core usage as it is not part of CRI stats. However, there are upstream components that still rely on such stats to function. The previous fix was faulty because the multiple callers could compete and update the stats, causing inconsistent/incoherent metrics. This change, instead, creates a separate call for updating the usage, and rely on eviction manager, which runs periodically, to trigger the updates. The caveat is that if eviction manager is completley turned off, no one would compute the usage.
114 lines
3.8 KiB
Go
114 lines
3.8 KiB
Go
// +build windows
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/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package stats
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import (
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"testing"
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"time"
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fuzz "github.com/google/gofuzz"
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"github.com/stretchr/testify/assert"
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"k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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statsapi "k8s.io/kubernetes/pkg/kubelet/apis/stats/v1alpha1"
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"k8s.io/kubernetes/pkg/kubelet/cm"
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statstest "k8s.io/kubernetes/pkg/kubelet/server/stats/testing"
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)
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func TestSummaryProvider(t *testing.T) {
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var (
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podStats = []statsapi.PodStats{*getPodStats()}
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imageFsStats = getFsStats()
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rootFsStats = getFsStats()
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node = &v1.Node{ObjectMeta: metav1.ObjectMeta{Name: "test-node"}}
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nodeConfig = cm.NodeConfig{}
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cgroupRoot = "/kubepods"
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cgroupStatsMap = map[string]struct {
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cs *statsapi.ContainerStats
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ns *statsapi.NetworkStats
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}{
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"/": {cs: getContainerStats()},
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"/pods": {cs: getContainerStats()},
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}
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)
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assert := assert.New(t)
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mockStatsProvider := new(statstest.StatsProvider)
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mockStatsProvider.
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On("GetNode").Return(node, nil).
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On("GetNodeConfig").Return(nodeConfig).
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On("GetPodCgroupRoot").Return(cgroupRoot).
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On("ListPodStats").Return(podStats, nil).
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On("ListPodStatsAndUpdateCPUNanoCoreUsage").Return(podStats, nil).
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On("ImageFsStats").Return(imageFsStats, nil).
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On("RootFsStats").Return(rootFsStats, nil).
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On("RlimitStats").Return(nil, nil).
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On("GetCgroupStats", "/", true).Return(cgroupStatsMap["/"].cs, cgroupStatsMap["/"].ns, nil)
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provider := NewSummaryProvider(mockStatsProvider)
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summary, err := provider.Get(true)
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assert.NoError(err)
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assert.Equal(summary.Node.NodeName, "test-node")
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assert.Equal(summary.Node.StartTime, cgroupStatsMap["/"].cs.StartTime)
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assert.Equal(summary.Node.CPU, cgroupStatsMap["/"].cs.CPU)
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assert.Equal(summary.Node.Memory, cgroupStatsMap["/"].cs.Memory)
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assert.Equal(summary.Node.Network, cgroupStatsMap["/"].ns)
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assert.Equal(summary.Node.Fs, rootFsStats)
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assert.Equal(summary.Node.Runtime, &statsapi.RuntimeStats{ImageFs: imageFsStats})
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assert.Equal(len(summary.Node.SystemContainers), 1)
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assert.Equal(summary.Node.SystemContainers[0].Name, "pods")
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assert.Equal(summary.Node.SystemContainers[0].CPU.UsageCoreNanoSeconds, podStats[0].CPU.UsageCoreNanoSeconds)
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assert.Equal(summary.Node.SystemContainers[0].CPU.UsageNanoCores, podStats[0].CPU.UsageNanoCores)
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assert.Equal(summary.Node.SystemContainers[0].Memory.WorkingSetBytes, podStats[0].Memory.WorkingSetBytes)
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assert.Equal(summary.Node.SystemContainers[0].Memory.UsageBytes, podStats[0].Memory.UsageBytes)
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assert.Equal(summary.Node.SystemContainers[0].Memory.AvailableBytes, podStats[0].Memory.AvailableBytes)
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assert.Equal(summary.Pods, podStats)
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}
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func getFsStats() *statsapi.FsStats {
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f := fuzz.New().NilChance(0)
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v := &statsapi.FsStats{}
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f.Fuzz(v)
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return v
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}
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func getContainerStats() *statsapi.ContainerStats {
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f := fuzz.New().NilChance(0)
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v := &statsapi.ContainerStats{}
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f.Fuzz(v)
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return v
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}
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func getPodStats() *statsapi.PodStats {
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containerStats := getContainerStats()
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podStats := statsapi.PodStats{
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PodRef: statsapi.PodReference{Name: "test-pod", Namespace: "test-namespace", UID: "UID_test-pod"},
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StartTime: metav1.NewTime(time.Now()),
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Containers: []statsapi.ContainerStats{*containerStats},
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CPU: containerStats.CPU,
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Memory: containerStats.Memory,
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}
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return &podStats
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}
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