// This method takes a container's absolute path and returns the stats for the
// container. The container's absolute path refers to its hierarchy in the
// cgroup file system. e.g. The root container, which represents the whole
// machine, has path "/"; all docker containers have path "/docker/<docker id>"
func (kl *Kubelet) statsFromContainerPath(containerPath string) (*api.ContainerStats, error) {
info, err := kl.CadvisorClient.ContainerInfo(containerPath)
if err != nil {
return nil, err
}
// When the stats data for the container is not available yet.
if info.StatsPercentiles == nil {
return nil, nil
}
ret := new(api.ContainerStats)
ret.MaxMemoryUsage = info.StatsPercentiles.MaxMemoryUsage
if len(info.StatsPercentiles.CpuUsagePercentiles) > 0 {
percentiles := make([]api.Percentile, len(info.StatsPercentiles.CpuUsagePercentiles))
for i, p := range info.StatsPercentiles.CpuUsagePercentiles {
percentiles[i].Percentage = p.Percentage
percentiles[i].Value = p.Value
}
ret.CpuUsagePercentiles = percentiles
}
if len(info.StatsPercentiles.MemoryUsagePercentiles) > 0 {
percentiles := make([]api.Percentile, len(info.StatsPercentiles.MemoryUsagePercentiles))
for i, p := range info.StatsPercentiles.MemoryUsagePercentiles {
percentiles[i].Percentage = p.Percentage
percentiles[i].Value = p.Value
}
ret.MemoryUsagePercentiles = percentiles
}
return ret, nil
}
func (kl *Kubelet) GetContainerStats(name string) (*api.ContainerStats, error) {
if kl.CadvisorClient == nil {
return nil, nil
}
id, found, err := kl.GetContainerID(name)
if err != nil || !found {
return nil, err
}
info, err := kl.CadvisorClient.ContainerInfo(fmt.Sprintf("/docker/%v", id))
if err != nil {
return nil, err
}
// When the stats data for the container is not available yet.
if info.StatsPercentiles == nil {
return nil, nil
}
ret := new(api.ContainerStats)
ret.MaxMemoryUsage = info.StatsPercentiles.MaxMemoryUsage
if len(info.StatsPercentiles.CpuUsagePercentiles) > 0 {
percentiles := make([]api.Percentile, len(info.StatsPercentiles.CpuUsagePercentiles))
for i, p := range info.StatsPercentiles.CpuUsagePercentiles {
percentiles[i].Percentage = p.Percentage
percentiles[i].Value = p.Value
}
ret.CpuUsagePercentiles = percentiles
}
if len(info.StatsPercentiles.MemoryUsagePercentiles) > 0 {
percentiles := make([]api.Percentile, len(info.StatsPercentiles.MemoryUsagePercentiles))
for i, p := range info.StatsPercentiles.MemoryUsagePercentiles {
percentiles[i].Percentage = p.Percentage
percentiles[i].Value = p.Value
}
ret.MemoryUsagePercentiles = percentiles
}
return ret, nil
}