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listVMs.go
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listVMs.go
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package hypervisors
import (
"bufio"
"fmt"
"net"
"net/http"
"sort"
"github.com/Cloud-Foundations/Dominator/lib/constants"
"github.com/Cloud-Foundations/Dominator/lib/format"
"github.com/Cloud-Foundations/Dominator/lib/html"
"github.com/Cloud-Foundations/Dominator/lib/json"
"github.com/Cloud-Foundations/Dominator/lib/url"
"github.com/Cloud-Foundations/Dominator/lib/verstr"
proto "github.com/Cloud-Foundations/Dominator/proto/hypervisor"
)
const commonStyleSheet string = `<style>
table, th, td {
border-collapse: collapse;
}
</style>
`
func getVmListFromMap(vmMap map[string]*vmInfoType, doSort bool) []*vmInfoType {
vms := make([]*vmInfoType, 0, len(vmMap))
if doSort {
ipAddrs := make([]string, 0, len(vmMap))
for ipAddr := range vmMap {
ipAddrs = append(ipAddrs, ipAddr)
}
verstr.Sort(ipAddrs)
for _, ipAddr := range ipAddrs {
vms = append(vms, vmMap[ipAddr])
}
} else {
for _, vm := range vmMap {
vms = append(vms, vm)
}
}
return vms
}
func (m *Manager) listVMs(writer *bufio.Writer, vms []*vmInfoType,
primaryOwnerFilter string, outputType uint) (map[string]struct{}, error) {
topology, err := m.getTopology()
if err != nil {
return nil, err
}
var tw *html.TableWriter
if outputType == url.OutputTypeHtml {
fmt.Fprintf(writer, "<title>List of VMs</title>\n")
writer.WriteString(commonStyleSheet)
fmt.Fprintln(writer, `<table border="1" style="width:100%">`)
tw, _ = html.NewTableWriter(writer, true, "IP Addr", "Name(tag)",
"State", "RAM", "CPU", "Num Volumes", "Storage", "Primary Owner",
"Hypervisor", "Location")
}
primaryOwnersMap := make(map[string]struct{})
for _, vm := range vms {
if primaryOwnerFilter != "" {
if vm.OwnerUsers[0] != primaryOwnerFilter {
primaryOwnersMap[vm.OwnerUsers[0]] = struct{}{}
continue
}
} else {
primaryOwnersMap[vm.OwnerUsers[0]] = struct{}{}
}
switch outputType {
case url.OutputTypeText:
fmt.Fprintln(writer, vm.ipAddr)
case url.OutputTypeHtml:
var background, foreground string
if vm.hypervisor.probeStatus == probeStatusOff {
foreground = "#ff8080"
} else if vm.hypervisor.probeStatus != probeStatusConnected {
foreground = "red"
} else if vm.hypervisor.healthStatus == "at risk" {
foreground = "#c00000"
} else if vm.hypervisor.healthStatus == "marginal" {
foreground = "#800000"
}
if vm.Uncommitted {
background = "yellow"
} else if topology.CheckIfIpIsReserved(vm.ipAddr) {
background = "orange"
}
tw.WriteRow(foreground, background,
fmt.Sprintf("<a href=\"http://%s:%d/showVM?%s\">%s</a>",
vm.hypervisor.machine.Hostname,
constants.HypervisorPortNumber, vm.ipAddr, vm.ipAddr),
vm.Tags["Name"],
vm.State.String(),
format.FormatBytes(vm.MemoryInMiB<<20),
fmt.Sprintf("%g", float64(vm.MilliCPUs)*1e-3),
vm.numVolumesTableEntry(),
vm.storageTotalTableEntry(),
vm.OwnerUsers[0],
fmt.Sprintf("<a href=\"http://%s:%d/\">%s</a>",
vm.hypervisor.machine.Hostname,
constants.HypervisorPortNumber,
vm.hypervisor.machine.Hostname),
vm.hypervisor.location,
)
}
}
switch outputType {
case url.OutputTypeHtml:
fmt.Fprintln(writer, "</table>")
}
return primaryOwnersMap, nil
}
func (m *Manager) getVMs(doSort bool) []*vmInfoType {
m.mutex.RLock()
defer m.mutex.RUnlock()
return getVmListFromMap(m.vms, doSort)
}
func (m *Manager) listVMsHandler(w http.ResponseWriter,
req *http.Request) {
writer := bufio.NewWriter(w)
defer writer.Flush()
parsedQuery := url.ParseQuery(req.URL)
vms := m.getVMs(true)
if parsedQuery.OutputType() == url.OutputTypeJson {
json.WriteWithIndent(writer, " ", vms)
}
primaryOwnerFilter := parsedQuery.Table["primaryOwner"]
primaryOwnersMap, err := m.listVMs(writer, vms, primaryOwnerFilter,
parsedQuery.OutputType())
if err != nil {
fmt.Fprintln(writer, err)
return
}
switch parsedQuery.OutputType() {
case url.OutputTypeHtml:
fmt.Fprintln(writer, "</body>")
primaryOwners := make([]string, 0, len(primaryOwnersMap))
for primaryOwner := range primaryOwnersMap {
primaryOwners = append(primaryOwners, primaryOwner)
}
sort.Strings(primaryOwners)
fmt.Fprintln(writer, "Filter by primary owner:<br>")
for _, primaryOwner := range primaryOwners {
fmt.Fprintf(writer,
"<a href=\"listVMs?primaryOwner=%s\">%s</a><br>\n",
primaryOwner, primaryOwner)
}
}
}
func (m *Manager) listVMsInLocation(dirname string) ([]net.IP, error) {
hypervisors, err := m.listHypervisors(dirname, showAll, "")
if err != nil {
return nil, err
}
addresses := make([]net.IP, 0)
for _, hypervisor := range hypervisors {
hypervisor.mutex.RLock()
for _, vm := range hypervisor.vms {
addresses = append(addresses, vm.Address.IpAddress)
}
hypervisor.mutex.RUnlock()
}
return addresses, nil
}
func (vm *vmInfoType) numVolumesTableEntry() string {
var comment string
for _, volume := range vm.Volumes {
if comment == "" && volume.Format != proto.VolumeFormatRaw {
comment = `<font style="color:grey;font-size:12px"> (!RAW)</font>`
}
}
return fmt.Sprintf("%d%s", len(vm.Volumes), comment)
}
func (vm *vmInfoType) storageTotalTableEntry() string {
var storage uint64
for _, volume := range vm.Volumes {
storage += volume.Size
}
return format.FormatBytes(storage)
}