func (collector CpuCollector) Collect(vm models.VirtualMachine) (string, error) {
// new current CPU counters
newSchedStat, err := lookupStats(vm)
if err != nil {
return "", err
}
// get old CPU counters
if oldSchedStat, exists := cpustats[vm.Ppid()]; exists {
// set new stats as old stats for next run
cpustats[vm.Ppid()] = newSchedStat
// calculate diff between new and old counters
cpu_utilisation := newSchedStat.calculateDiff(oldSchedStat)
vCores := len(vm.VCpuTasks())
result := fmt.Sprintf("%d\t%.0f%%\t%.0f%%\t%.0f%%\t%.0f%%",
vCores,
(cpu_utilisation.Avg.Inside * 100),
(cpu_utilisation.Avg.Outside * 100),
(cpu_utilisation.Avg.Steal * 100),
(cpu_utilisation.Avg_other * 100))
return result, nil
} else {
// no measurement yet
// set new stats as old stats for next run
cpustats[vm.Ppid()] = newSchedStat
return "-", nil
}
}
func lookupStats(vm models.VirtualMachine) (VmCpuSchedStat, error) {
cpuSchedStats := []CpuSchedStat{}
for _, taskId := range vm.VCpuTasks() {
cpuSchedStat, err := getCpuSchedStat(taskId)
if err != nil {
return VmCpuSchedStat{}, err
}
cpuSchedStats = append(cpuSchedStats, cpuSchedStat)
}
other := CpuSchedStat{}
// TODO fill other
//getTasks(vm)
return VmCpuSchedStat{cpuSchedStats, other}, nil
}