func (h *Host) getProvisioner() (provision.Provisioner, error) {
provisioner, err := provision.DetectProvisioner(h.Driver)
if err != nil {
return nil, fmt.Errorf("Error getting provisioner: %s", err)
}
return provisioner, nil
}
func (h *Host) Upgrade() error {
machineState, err := h.Driver.GetState()
if err != nil {
return err
}
if machineState != state.Running {
log.Fatal(errMachineMustBeRunningForUpgrade)
}
provisioner, err := provision.DetectProvisioner(h.Driver)
if err != nil {
return err
}
if err := provisioner.Package("docker", pkgaction.Upgrade); err != nil {
return err
}
if err := provisioner.Service("docker", pkgaction.Restart); err != nil {
return err
}
return nil
}