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|
(* 'top'-like tool for libvirt domains.
* $Id: virt_top_xml.ml,v 1.1 2007/08/23 09:36:04 rjones Exp $
*
* This file contains all code which requires xml-light.
*)
open ExtList
module C = Libvirt.Connect
module D = Libvirt.Domain
module N = Libvirt.Network ;;
Virt_top.parse_device_xml :=
fun id dom ->
try
let xml = D.get_xml_desc dom in
let xml = Xml.parse_string xml in
let devices =
match xml with
| Xml.Element ("domain", _, children) ->
let devices =
List.filter_map (
function
| Xml.Element ("devices", _, devices) -> Some devices
| _ -> None
) children in
List.concat devices
| _ ->
failwith "get_xml_desc didn't return <domain/>" in
let rec target_dev_of = function
| [] -> None
| Xml.Element ("target", attrs, _) :: rest ->
(try Some (List.assoc "dev" attrs)
with Not_found -> target_dev_of rest)
| _ :: rest -> target_dev_of rest
in
let blkdevs =
List.filter_map (
function
| Xml.Element ("disk", _, children) -> target_dev_of children
| _ -> None
) devices in
let netifs =
List.filter_map (
function
| Xml.Element ("interface", _, children) -> target_dev_of children
| _ -> None
) devices in
blkdevs, netifs
with
| Xml.Error _
| Libvirt.Virterror _ -> [], [] (* ignore transient errs *)
|
