mirror of
https://github.com/k3s-io/kubernetes.git
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103 lines
3.2 KiB
Go
103 lines
3.2 KiB
Go
/*
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Copyright 2015 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 kubelet
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import (
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cadvisorapi "github.com/google/cadvisor/info/v1"
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cadvisorapiv2 "github.com/google/cadvisor/info/v2"
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kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
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"k8s.io/kubernetes/pkg/types"
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)
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// GetContainerInfo returns stats (from Cadvisor) for a container.
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func (kl *Kubelet) GetContainerInfo(podFullName string, podUID types.UID, containerName string, req *cadvisorapi.ContainerInfoRequest) (*cadvisorapi.ContainerInfo, error) {
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podUID = kl.podManager.TranslatePodUID(podUID)
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pods, err := kl.runtimeCache.GetPods()
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if err != nil {
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return nil, err
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}
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pod := kubecontainer.Pods(pods).FindPod(podFullName, podUID)
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container := pod.FindContainerByName(containerName)
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if container == nil {
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return nil, kubecontainer.ErrContainerNotFound
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}
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ci, err := kl.cadvisor.DockerContainer(container.ID.ID, req)
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if err != nil {
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return nil, err
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}
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return &ci, nil
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}
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// HasDedicatedImageFs returns true if the imagefs has a dedicated device.
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func (kl *Kubelet) HasDedicatedImageFs() (bool, error) {
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imageFsInfo, err := kl.ImagesFsInfo()
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if err != nil {
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return false, err
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}
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rootFsInfo, err := kl.RootFsInfo()
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if err != nil {
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return false, err
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}
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return imageFsInfo.Device != rootFsInfo.Device, nil
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}
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// GetContainerInfoV2 returns stats (from Cadvisor) for containers.
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func (kl *Kubelet) GetContainerInfoV2(name string, options cadvisorapiv2.RequestOptions) (map[string]cadvisorapiv2.ContainerInfo, error) {
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return kl.cadvisor.ContainerInfoV2(name, options)
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}
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// ImagesFsInfo returns information about docker image fs usage from
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// cadvisor.
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func (kl *Kubelet) ImagesFsInfo() (cadvisorapiv2.FsInfo, error) {
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return kl.cadvisor.ImagesFsInfo()
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}
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// RootFsInfo returns info about the root fs from cadvisor.
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func (kl *Kubelet) RootFsInfo() (cadvisorapiv2.FsInfo, error) {
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return kl.cadvisor.RootFsInfo()
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}
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// Returns stats (from Cadvisor) for a non-Kubernetes container.
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func (kl *Kubelet) GetRawContainerInfo(containerName string, req *cadvisorapi.ContainerInfoRequest, subcontainers bool) (map[string]*cadvisorapi.ContainerInfo, error) {
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if subcontainers {
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return kl.cadvisor.SubcontainerInfo(containerName, req)
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} else {
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containerInfo, err := kl.cadvisor.ContainerInfo(containerName, req)
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if err != nil {
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return nil, err
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}
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return map[string]*cadvisorapi.ContainerInfo{
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containerInfo.Name: containerInfo,
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}, nil
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}
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}
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// GetCachedMachineInfo assumes that the machine info can't change without a reboot
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func (kl *Kubelet) GetCachedMachineInfo() (*cadvisorapi.MachineInfo, error) {
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if kl.machineInfo == nil {
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info, err := kl.cadvisor.MachineInfo()
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if err != nil {
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return nil, err
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}
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kl.machineInfo = info
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}
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return kl.machineInfo, nil
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}
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