func readLibvirtVM(HostIpAddress string, UUIDString string) (VirtualMachine, error) {
var conn libvirt.VirConnection
var err error
ok := ipaddressConnectionCache.Check(HostIpAddress)
if ok == false {
conn, err = libvirt.NewVirConnection("qemu+ssh://root@" + HostIpAddress + "/system")
if err != nil {
return VirtualMachine{}, err
}
ipaddressConnectionCache.Set(HostIpAddress, conn)
} else {
//?How to deal with connection's not alive
conn = ipaddressConnectionCache.Get(HostIpAddress).(libvirt.VirConnection)
if ok, _ := conn.IsAlive(); !ok {
log.Printf("remote %s is not alive", HostIpAddress)
conn, err = libvirt.NewVirConnection("qemu+ssh://root@" + HostIpAddress + "/system")
if err != nil {
ipaddressConnectionCache.Delete(HostIpAddress)
return VirtualMachine{}, err
}
/*TODO Write Lock*/
ipaddressConnectionCache.Set(HostIpAddress, conn)
}
}
domain, err := conn.LookupByUUIDString(UUIDString)
if err != nil {
return VirtualMachine{}, err
}
vm := fillVmData(domain, conn)
return vm, nil
}
