e8da890aee
We let dockershim implement the kubelet's internal (CRI) API as an intermediary step before transitioning fully to communicate using gRPC. Now that kubelet has been communicating to the runtime over gRPC for multiple releases, we can safely retire the extra interface in dockershim.
110 lines
3.5 KiB
Go
110 lines
3.5 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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"golang.org/x/net/context"
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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(_ context.Context, r *runtimeapi.ContainerStatsRequest) (*runtimeapi.ContainerStatsResponse, error) {
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stats, err := ds.getContainerStats(r.ContainerId)
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if err != nil {
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return nil, err
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}
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return &runtimeapi.ContainerStatsResponse{Stats: stats}, 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(ctx context.Context, r *runtimeapi.ListContainerStatsRequest) (*runtimeapi.ListContainerStatsResponse, error) {
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containerStatsFilter := r.GetFilter()
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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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listResp, err := ds.ListContainers(ctx, &runtimeapi.ListContainersRequest{Filter: 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 listResp.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 &runtimeapi.ListContainerStatsResponse{Stats: 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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statusResp, err := ds.ContainerStatus(context.Background(), &runtimeapi.ContainerStatusRequest{ContainerId: containerID})
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if err != nil {
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return nil, err
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}
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status := statusResp.GetStatus()
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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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