func readItemStats(vm models.VirtualMachine, vmif models.MeasurementItem) (models.Statistic, error) {
/*
Capacity: 21474836480
Allocation: 483991552
Physical: 483991552
*/
stat1, err1 := util.VirshXDetails("domblkinfo", vm.Name(), vmif.Name, 0, 1, nil)
if err1 != nil {
return models.Statistic{}, err1
}
/*
hda rd_req 23316
hda rd_bytes 461506990
hda wr_req 0
hda wr_bytes 0
hda flush_operations 0
hda rd_total_times 1514874067
hda wr_total_times 0
hda flush_total_times 0
*/
stat2, err2 := util.VirshXDetails("domblkstat", vm.Name(), vmif.Name, 1, 2, nil)
if err2 != nil {
return models.Statistic{}, err2
}
// copy stats from stat1 to stat2
for k, v := range stat1.Values {
stat2.Values[k] = v
}
return stat2, nil
}
func (collector StaticCollector) Collect(vm models.VirtualMachine) (string, error) {
vmx := vms[vm.Name()]
// nothing to do, just look up the osUuid and print it as a result
vmOsUuid := vmx.StaticData.Values["UUID"]
result := fmt.Sprintf("%s", vmOsUuid)
return result, nil
}
func readItems(vm models.VirtualMachine) (models.Statistic, error) {
/*
# virsh dominfo xy
Id: 4
Name: instance-0000012c
UUID: 5f065a85-9a0f-402c-8470-681155a10021
OS Type: hvm
State: running
CPU(s): 2
CPU time: 15240.3s
Max memory: 4194304 KiB
Used memory: 4194304 KiB
Persistent: yes
Autostart: disable
Managed save: no
Security model: none
Security DOI: 0
*/
staticData, err := util.VirshXDetails("dominfo", vm.Name(), "", 0, 1, nil)
if err != nil {
log.Printf("Error while readItems %a", err)
return models.Statistic{}, err
}
return staticData, nil
}
func readItems(vm models.VirtualMachine) ([]models.MeasurementItem, error) {
/*
# virsh domblklist xy
Target Source
------------------------------------------------
vda /var/lib/nova/instances/9e703375-7ca7-4135-9534-b7aaeb5a14e5/disk
*/
list, err := util.VirshXList("domblklist", vm.Name())
if err != nil {
return nil, err
}
return list, nil
}
func readItems(vm models.VirtualMachine) ([]models.MeasurementItem, error) {
/*
# virsh domiflist xy
Interface Type Source Model MAC
-------------------------------------------------------
tap07e88f58-5d bridge qbr07e88f58-5d virtio fa:16:3e:63:1c:a9
*/
list, err := util.VirshXList("domiflist", vm.Name())
if err != nil {
return nil, err
}
return list, nil
}
func readItemStats(vm models.VirtualMachine, vmif models.MeasurementItem) (models.Statistic, error) {
/*
# virsh domiflist xy
Interface Type Source Model MAC
-------------------------------------------------------
tap07e88f58-5d bridge qbr07e88f58-5d virtio fa:16:3e:63:1c:a9
*/
stat, err := util.VirshXDetails("domifstat", vm.Name(), vmif.Name, 1, 2, statisticEvalFunction)
if err != nil {
return models.Statistic{}, err
}
return stat, nil
}
func (collector NetworkCollector) Collect(vm models.VirtualMachine) (string, error) {
vmx := vms[vm.Name()]
// new current counters
newStats, err := vmx.lookupStats()
if err != nil {
return "", err
}
// get old counters
oldStats := vmx.Statistic
if len(oldStats) < 1 {
vmx.Statistic = newStats
vms[vm.Name()] = vmx
return "-", nil
}
// calculate diff between new and old counters
var utilSum int64 = 0
for itemName, newStat := range newStats {
if oldStat, exists := oldStats[itemName]; exists {
utilItem := newStat.DiffPerTime(oldStat)
utilSum = utilSum + utilItem
}
}
// set newStats as oldStats
vmx.Statistic = newStats
vms[vm.Name()] = vmx
utilMB := (float64(utilSum) / 1024 / 1024)
result := fmt.Sprintf("%.2fMB/s", utilMB)
return result, nil
}
func (collector StaticCollector) CollectDetails(vm models.VirtualMachine) {
staticData, err := readItems(vm)
if err != nil {
log.Printf("Error while CollectDetails in StaticCollector %a", err)
return
}
if vmx, exists := vms[vm.Name()]; exists {
vmx.StaticData = staticData
vms[vm.Name()] = vmx
} else {
vms[vm.Name()] = VirtualMachineExtended{vm, staticData}
}
}
func (collector DiskCollector) CollectDetails(vm models.VirtualMachine) {
// lookup network interfaces for all virtual machines
list, err := readItems(vm)
if err != nil {
return
}
if vmx, exists := vms[vm.Name()]; exists {
vmx.Items = list
vms[vm.Name()] = vmx
} else {
vms[vm.Name()] = VirtualMachineExtended{vm, list, nil}
}
}
func (collector DiskCollector) Collect(vm models.VirtualMachine) (string, error) {
vmx := vms[vm.Name()]
// new current counters
newStats, err := vmx.lookupStats()
if err != nil {
return "", err
}
// get old counters
oldStats := vmx.Statistic
if len(oldStats) < 1 {
vmx.Statistic = newStats
vms[vm.Name()] = vmx
return "-", nil
}
// sum up disk space (available and used)
var spaceTotal int64 = 0
var spaceUsed int64 = 0
for _, newStat := range newStats {
spaceTotal = spaceTotal + newStat.GetValueAsInt("Capacity")
spaceUsed = spaceUsed + newStat.GetValueAsInt("Allocation")
}
// calculate read/write bandwidth
var readBand int64 = 0
var writeBand int64 = 0
for itemName, newStat := range newStats {
if oldStat, exists := oldStats[itemName]; exists {
readBandItem := newStat.DiffPerTimeField(oldStat, "rd_bytes")
readBand = readBand + readBandItem
writeBandItem := newStat.DiffPerTimeField(oldStat, "wr_bytes")
writeBand = writeBand + writeBandItem
}
}
// set newStats as oldStats
vmx.Statistic = newStats
vms[vm.Name()] = vmx
// format results
spaceTotalMB := (float64(spaceTotal) / 1024 / 1024)
spaceUsedMB := (float64(spaceUsed) / 1024 / 1024)
readBandMB := (float64(readBand) / 1024 / 1024)
writeBandMB := (float64(writeBand) / 1024 / 1024)
result := fmt.Sprintf("%.0fMB\t%0.fMB\t%.2fMB/s\t%.2fMB/s", spaceUsedMB, spaceTotalMB, readBandMB, writeBandMB)
return result, nil
}