5eae7eb166
Implement CRI stats for dockershim using docker stats. This enables use of the summary api to get container metrics on Windows where CRI stats are enabled.
106 lines
3.1 KiB
Go
106 lines
3.1 KiB
Go
// +build windows
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/*
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Copyright 2017 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 dockershim
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import (
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"time"
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runtimeapi "k8s.io/kubernetes/pkg/kubelet/apis/cri/v1alpha1/runtime"
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)
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// ContainerStats returns stats for a container stats request based on container id.
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func (ds *dockerService) ContainerStats(containerID string) (*runtimeapi.ContainerStats, error) {
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containerStats, err := ds.getContainerStats(containerID)
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if err != nil {
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return nil, err
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}
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return containerStats, nil
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}
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// ListContainerStats returns stats for a list container stats request based on a filter.
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func (ds *dockerService) ListContainerStats(containerStatsFilter *runtimeapi.ContainerStatsFilter) ([]*runtimeapi.ContainerStats, error) {
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filter := &runtimeapi.ContainerFilter{}
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if containerStatsFilter != nil {
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filter.Id = containerStatsFilter.Id
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filter.PodSandboxId = containerStatsFilter.PodSandboxId
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filter.LabelSelector = containerStatsFilter.LabelSelector
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}
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containers, err := ds.ListContainers(filter)
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if err != nil {
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return nil, err
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}
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var stats []*runtimeapi.ContainerStats
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for _, container := range containers {
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containerStats, err := ds.getContainerStats(container.Id)
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if err != nil {
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return nil, err
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}
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stats = append(stats, containerStats)
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}
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return stats, nil
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}
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func (ds *dockerService) getContainerStats(containerID string) (*runtimeapi.ContainerStats, error) {
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statsJSON, err := ds.client.GetContainerStats(containerID)
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if err != nil {
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return nil, err
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}
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containerJSON, err := ds.client.InspectContainerWithSize(containerID)
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if err != nil {
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return nil, err
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}
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status, err := ds.ContainerStatus(containerID)
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if err != nil {
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return nil, err
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}
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dockerStats := statsJSON.Stats
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timestamp := time.Now().UnixNano()
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containerStats := &runtimeapi.ContainerStats{
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Attributes: &runtimeapi.ContainerAttributes{
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Id: containerID,
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Metadata: status.Metadata,
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Labels: status.Labels,
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Annotations: status.Annotations,
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},
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Cpu: &runtimeapi.CpuUsage{
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Timestamp: timestamp,
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// have to multiply cpu usage by 100 since docker stats units is in 100's of nano seconds for Windows
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// see https://github.com/moby/moby/blob/v1.13.1/api/types/stats.go#L22
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UsageCoreNanoSeconds: &runtimeapi.UInt64Value{Value: dockerStats.CPUStats.CPUUsage.TotalUsage * 100},
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},
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Memory: &runtimeapi.MemoryUsage{
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Timestamp: timestamp,
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WorkingSetBytes: &runtimeapi.UInt64Value{Value: dockerStats.MemoryStats.PrivateWorkingSet},
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},
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WritableLayer: &runtimeapi.FilesystemUsage{
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Timestamp: timestamp,
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UsedBytes: &runtimeapi.UInt64Value{Value: uint64(*containerJSON.SizeRw)},
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},
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}
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return containerStats, nil
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}
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