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virt: Add logic to parse the libvirt uri

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Guess the domain and os types from the libvirt uri and add the ability
to set the init for lxc containers.
This commit is contained in:
Joe Julian
2016-10-24 16:59:08 -07:00
committed by Vinzenz Feenstra
parent 0aa9c7c592
commit 12f7d0a516
1 changed files with 51 additions and 3 deletions
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54
resources/virt.go
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@@ -22,6 +22,7 @@ import (
"fmt"
"log"
"math/rand"
"net/url"
"time"
"github.com/purpleidea/mgmt/event"
@@ -49,6 +50,7 @@ type VirtRes struct {
Transient bool `yaml:"transient"` // defined (false) or undefined (true)
CPUs uint16 `yaml:"cpus"`
Memory uint64 `yaml:"memory"` // in KBytes
OSInit string `yaml:"osinit"` // init used by lxc
Boot []string `yaml:"boot"` // boot order. values: fd, hd, cdrom, network
Disk []diskDevice `yaml:"disk"`
CDRom []cdRomDevice `yaml:"cdrom"`
@@ -60,7 +62,7 @@ type VirtRes struct {
}
// NewVirtRes is a constructor for this resource. It also calls Init() for you.
func NewVirtRes(name string, uri, state string, transient bool, cpus uint16, memory uint64) (*VirtRes, error) {
func NewVirtRes(name string, uri, state string, transient bool, cpus uint16, memory uint64, osinit string) (*VirtRes, error) {
obj := &VirtRes{
BaseRes: BaseRes{
Name: name,
@@ -70,6 +72,7 @@ func NewVirtRes(name string, uri, state string, transient bool, cpus uint16, mem
Transient: transient,
CPUs: cpus,
Memory: memory,
OSInit: osinit,
}
return obj, obj.Init()
}
@@ -507,16 +510,61 @@ func (obj *VirtRes) CheckApply(apply bool) (bool, error) {
return checkOK, nil // w00t
}
// Return the correct domain type based on the uri
func (obj *VirtRes) getDomainType() string {
u, err := url.Parse(obj.URI)
if err != nil {
log.Printf("%s[%s]: Parsing URI failed: %s", obj.Kind(), obj.GetName(),
obj.URI)
}
switch u.Scheme {
case "lxc":
return "<domain type='lxc'>"
default:
return "<domain type='kvm'>"
}
}
// Return the correct os type based on the uri
func (obj *VirtRes) getOSType() string {
u, err := url.Parse(obj.URI)
if err != nil {
log.Printf("%s[%s]: Parsing URI failed: %s", obj.Kind(), obj.GetName(),
obj.URI)
}
switch u.Scheme {
case "lxc":
return "<type>exe</type>"
default:
return "<type>hvm</type>"
}
}
func (obj *VirtRes) getOSInit() string {
u, err := url.Parse(obj.URI)
if err != nil {
log.Printf("%s[%s]: Parsing URI failed: %s", obj.Kind(), obj.GetName(),
obj.URI)
}
switch u.Scheme {
case "lxc":
return fmt.Sprintf("<init>%s</init>", obj.OSInit)
default:
return ""
}
}
func (obj *VirtRes) getDomainXML() string {
var b string
b += "<domain type='kvm'>" // start domain
b += obj.getDomainType() // start domain
b += fmt.Sprintf("<name>%s</name>", obj.GetName())
b += fmt.Sprintf("<memory unit='KiB'>%d</memory>", obj.Memory)
b += fmt.Sprintf("<vcpu>%d</vcpu>", obj.CPUs)
b += "<os>"
b += "<type>hvm</type>"
b += obj.getOSType()
b += obj.getOSInit()
if obj.Boot != nil {
for _, boot := range obj.Boot {
b += fmt.Sprintf("<boot dev='%s'/>", boot)