1 files changed, 52 insertions, 0 deletions
diff --git a/virt-top/virt_top_xml.ml b/virt-top/virt_top_xml.ml
new file mode 100644
index 0000000..7d24b3f
--- /dev/null
+++ b/virt-top/virt_top_xml.ml
@@ -0,0 +1,52 @@
+(* '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 *)