func NewFromConfigs(kernel, initrd string, configs []FactoryConfig) Factory {
bases := make([]base.Factory, len(configs))
for i, c := range configs {
var b base.Factory
b = direct.New(c.Cpu, c.Memory, kernel, initrd)
bases[i] = cache.New(c.Cache, b)
}
if len(bases) == 0 {
// skip GetVm from the base factory
return single.New(direct.New(1000000, 1000000, kernel, initrd))
} else if len(bases) == 1 {
return single.New(bases[0])
} else {
return multi.New(bases)
}
}
func New(templateRoot string, cpu, mem int, kernel, initrd string) base.Factory {
var vmName string
for {
vmName = fmt.Sprintf("template-vm-%s", pod.RandStr(10, "alpha"))
if _, err := os.Stat(templateRoot + "/" + vmName); os.IsNotExist(err) {
break
}
}
s, err := template.CreateTemplateVM(templateRoot+"/"+vmName, vmName, cpu, mem, kernel, initrd)
if err != nil {
glog.Infof("failed to create template factory: %v", err)
glog.Infof("use direct factory instead")
return direct.New(cpu, mem, kernel, initrd)
}
return &templateFactory{s: s}
}