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[libvirt] [libvirt-glib] RFC: Empty statistics for user-mode interfaces



From: "Zeeshan Ali (Khattak)" <zeeshanak gnome org>

One of the limitations of user-mode networking of libvirt is that you
can't get statistics for it (not yet, at least). Instead of erroring-out
in that case, simply return empty statistics result and spit a debug
message.

I will merge this into my 'Remove now redundant 'path' property' patch
once someone tells me that this makes sense. :)
---
 libvirt-gobject/libvirt-gobject-domain-interface.c |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)

diff --git a/libvirt-gobject/libvirt-gobject-domain-interface.c b/libvirt-gobject/libvirt-gobject-domain-interface.c
index 0a9bde0..4436466 100644
--- a/libvirt-gobject/libvirt-gobject-domain-interface.c
+++ b/libvirt-gobject/libvirt-gobject-domain-interface.c
@@ -94,7 +94,11 @@ static gchar *gvir_domain_interface_get_path(GVirDomainInterface *self)
     gchar *path = NULL;
 
     config = gvir_domain_device_get_config(GVIR_DOMAIN_DEVICE(self));
-    path = gvir_config_domain_interface_get_ifname(GVIR_CONFIG_DOMAIN_INTERFACE (config));
+    if (GVIR_CONFIG_IS_DOMAIN_INTERFACE_USER(self))
+        /* FIXME: One of the limitations of user-mode networking of libvirt */
+        g_debug("Statistics gathering for user-mode network not yet supported");
+    else
+        path = gvir_config_domain_interface_get_ifname(GVIR_CONFIG_DOMAIN_INTERFACE (config));
 
     g_object_unref (config);
 
@@ -123,6 +127,10 @@ GVirDomainInterfaceStats *gvir_domain_interface_get_stats(GVirDomainInterface *s
 
     handle = gvir_domain_device_get_domain_handle(GVIR_DOMAIN_DEVICE(self));
     path = gvir_domain_interface_get_path (self);
+    if (path == NULL) {
+        ret = g_slice_new0(GVirDomainInterfaceStats);
+        goto end;
+    }
 
     if (virDomainInterfaceStats(handle, path, &stats, sizeof (stats)) < 0) {
         gvir_set_error_literal(err, GVIR_DOMAIN_INTERFACE_ERROR,
-- 
1.7.7.6


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