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work on adding droplets from libvirt xml files 

Signed-off-by: Jeff Carr <jcarr@wit.com>
This commit is contained in:
Jeff Carr 2024-10-23 04:25:24 -05:00
parent 09b635219a
commit 35a2a37940
3 changed files with 123 additions and 24 deletions
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97
addDroplet.go
View File

@ -9,22 +9,34 @@ import (
"libvirt.org/go/libvirtxml"
)
func addDroplet(domcfg *libvirtxml.Domain) (*DropletT, error) {
func addDomainDroplet(domcfg *libvirtxml.Domain) (*DropletT, error) {
if domcfg == nil {
return nil, errors.New("domcfg == nil")
}
d, _ := findDomain(domcfg)
if d != nil {
return d, errors.New(d.pb.Hostname + " droplet exists. need to update instead")
}
// test add some ethernet devices
macs := getMacs(domcfg)
fmt.Printf("Virt mac addr:%s\n", macs)
fmt.Println("ADD FAILED", domcfg.Name, domcfg.UUID)
return nil, errors.New("not found")
}
func findDomain(domcfg *libvirtxml.Domain) (*DropletT, error) {
var found *DropletT
if domcfg == nil {
return nil, errors.New("domcfg == nil")
}
// fmt.Printf("Virt type %s\n", domcfg.Type)
// fmt.Printf("Virt name %s\n", domcfg.Name)
// fmt.Printf("Virt UUID %s\n", domcfg.UUID)
// fmt.Printf("Virt Memory %d %s\n", domcfg.Memory.Value, domcfg.Memory.Unit)
for _, d := range me.droplets {
if d.pb.Hostname == domcfg.Name {
if d.pb.Uuid == domcfg.UUID {
fmt.Println("FOUND NAME", domcfg.Name, domcfg.UUID)
if d.pb.Uuid != domcfg.UUID {
fmt.Println("CHANGED UUID", d.pb.Uuid, domcfg.UUID)
} else {
d.pb.Uuid = domcfg.UUID
me.changed = true
}
@ -37,17 +49,78 @@ func addDroplet(domcfg *libvirtxml.Domain) (*DropletT, error) {
}
if d.pb.Uuid == domcfg.UUID {
if d.pb.Hostname == domcfg.Name {
fmt.Println("FOUND UUID WITH MATCHING NAME", domcfg.Name, domcfg.UUID)
} else {
if d.pb.Hostname != domcfg.Name {
fmt.Println("FOUND UUID WITH MIS-MATCHED NAME", domcfg.Name, domcfg.UUID)
return d, errors.New("UUID with mis-matched names")
}
}
}
return found, nil
}
func updateDroplet(d *DropletT, domcfg *libvirtxml.Domain) bool {
var ok bool = true
if d == nil {
return false
}
if domcfg == nil {
return false
}
// check memory
if domcfg.Memory.Unit == "KiB" {
var m int64
m = int64(domcfg.Memory.Value * 1024)
if d.pb.Memory != m {
d.pb.Memory = m
me.changed = true
fmt.Printf("Memory changed %d, %d %s\n", d.pb.Memory, domcfg.Memory.Value, domcfg.Memory.Unit)
}
} else {
fmt.Println("Unknown Memory Unit", domcfg.Memory.Unit)
ok = false
}
// check cpus
if d.pb.Cpus != int64(domcfg.VCPU.Value) {
fmt.Printf("cpus changed. VCPU = %+v\n", domcfg.VCPU)
d.pb.Cpus = int64(domcfg.VCPU.Value)
me.changed = true
}
// check type
if domcfg.Type != "kvm" {
fmt.Printf("not kvm. Virt type == %s\n", domcfg.Type)
ok = false
}
// test add some ethernet devices
macs := getMacs(domcfg)
fmt.Printf("Virt mac addr:%s\n", macs)
return nil, errors.New("not found")
// fmt.Println("UPDATE FAILED", domcfg.Name, domcfg.UUID)
return ok
}
func updateMemory(d *DropletT, domcfg *libvirtxml.Domain) bool {
if (d == nil) || (domcfg == nil) {
return false
}
// check memory
if domcfg.Memory.Unit == "KiB" {
var m int64
m = int64(domcfg.Memory.Value * 1024)
if d.pb.Memory != m {
d.pb.Memory = m
me.changed = true
fmt.Printf("Memory changed %d, %d %s\n", d.pb.Memory, domcfg.Memory.Value, domcfg.Memory.Unit)
return true
}
return false
}
fmt.Println("Unknown Memory Unit", domcfg.Memory.Unit)
return true
}

13
argv.go
View File

@ -11,12 +11,13 @@ import "go.wit.com/log"
var argv args
type args struct {
Dir string `arg:"--dir" help:"defaults to ~/.config/virtigo/"`
Port int `arg:"--port" default:"8080" help:"specify a different default port"`
Hosts []string `arg:"--hosts" help:"hosts to connect to"`
Uptime bool `arg:"--uptime" default:"true" help:"allow uptime checks for things like Kuma"`
Daemon bool `arg:"--daemon" help:"run in daemon mode"`
Xml []string `arg:"--add-xml" help:"add libvirt xml files"`
Dir string `arg:"--dir" help:"defaults to ~/.config/virtigo/"`
Port int `arg:"--port" default:"8080" help:"specify a different default port"`
Hosts []string `arg:"--hosts" help:"hosts to connect to"`
Uptime bool `arg:"--uptime" default:"true" help:"allow uptime checks for things like Kuma"`
Daemon bool `arg:"--daemon" help:"run in daemon mode"`
Xml []string `arg:"--add-xml" help:"add libvirt xml files"`
Save bool `arg:"--save" default:"false" help:"save xml changes to the protobuf values"`
}
func (a args) Description() string {

37
main.go
View File

@ -44,25 +44,50 @@ func main() {
var ok bool = true
for _, filename := range argv.Xml {
log.Info("add xml file", filename)
domcfg, err := readXml(filename)
if err != nil {
// parsing the libvirt xml file failed
log.Info("error:", filename, err)
ok = false
continue
}
d, err := addDroplet(domcfg)
// see if the libvirt xml droplet is already here
d, err := findDomain(domcfg)
if err != nil {
// some error. probably UUID mismatch or hostname duplication
// this has to be fixed by hand
ok = false
continue
}
if d == nil {
log.Info("addDroplet() returned nil")
ok = false
// this is a new droplet. add it to the cluster
log.Info("Add New Droplet here", domcfg.Name)
_, err := addDomainDroplet(domcfg)
if err != nil {
ok = false
log.Info("addDomainDroplet() failed", err)
}
} else {
// this droplet is already here
if updateDroplet(d, domcfg) {
if me.changed {
log.Info("updateDroplet() worked. droplet changed")
} else {
log.Info("updateDroplet() worked. nothing changed")
}
} else {
log.Info("updateDroplet() failed for", d.pb.Hostname)
ok = false
}
}
}
if me.changed {
writeConfigFile()
writeConfigFileDroplets()
if argv.Save {
writeConfigFile()
writeConfigFileDroplets()
} else {
log.Info("Not saving changes (use --save to save)")
}
os.Exit(0)
}
if !ok {