func GetUsage(id_short string) (int64, error) {
id, err := utils.GetFullContainerId(id_short)
if err != nil {
return -1, err
}
return int64((float64((cpuUsages[id] - previousCpuUsages[id])) / float64(1e9) / float64(runtime.NumCPU())) * 100), nil
}
func GetUsage(name string) (int64, error) {
id, err := utils.GetFullContainerId(name)
if err != nil {
return 0, err
}
path := fmt.Sprintf("%s/%s/%s", LXC_MEM_DIR, id, LXC_MEM_USAGE_FILE)
f, err := os.Open(path)
if err != nil {
log.Println("Error while opening : ", err)
return 0, err
}
defer f.Close()
buffer := make([]byte, 16)
n, err := f.Read(buffer)
if err != nil {
log.Println("Error while reading ", path, " : ", err)
return 0, err
}
buffer = buffer[:n-1]
val, err := strconv.ParseInt(string(buffer), 10, strconv.IntSize)
if err != nil {
log.Println("Error while parsing ", string(buffer), " : ", err)
return 0, err
}
return val, nil
}
