[virt-tools-list] [virt-viewer][PATCH 3/3] Listen to virNetwork's Lifecycle events

[Fabiano Fidêncio]

Apart from the usual virDomain's Lifecycle events, we have to listen to
the virNetwork's Lifecycle events in order to get notifications about
libvirt deamon being started/stopped/restarted, which is useful when
connecting to guest through qemu+ssh://

Resolves: rhbz#1164052
https://bugzilla.redhat.com/show_bug.cgi?id=1164052
---
 src/virt-viewer.c | 46 +++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 45 insertions(+), 1 deletion(-)

diff --git a/src/virt-viewer.c b/src/virt-viewer.c
index bc831dc..989e0c2 100644
--- a/src/virt-viewer.c
+++ b/src/virt-viewer.c
@@ -60,6 +60,7 @@ struct _VirtViewerPrivate {
     gboolean reconnect;
     gboolean auth_cancelled;
     gint domain_event;
+    gint network_event;
 };
 
 G_DEFINE_TYPE (VirtViewer, virt_viewer, VIRT_VIEWER_TYPE_APP)
@@ -507,6 +508,38 @@ virt_viewer_domain_event(virConnectPtr conn G_GNUC_UNUSED,
     return 0;
 }
 
+static int
+virt_viewer_network_event(virConnectPtr conn G_GNUC_UNUSED,
+                          virNetworkPtr net G_GNUC_UNUSED,
+                          int event,
+                          int detail G_GNUC_UNUSED,
+                          void *opaque)
+{
+    VirtViewer *self = opaque;
+    VirtViewerApp *app = VIRT_VIEWER_APP(self);
+    GError *error = NULL;
+
+    g_debug("Got domain event %d %d", event, detail);
+
+    switch (event) {
+    case VIR_NETWORK_EVENT_STOPPED:
+        //virt_viewer_deactivate(self);
+        break;
+
+    case VIR_NETWORK_EVENT_STARTED:
+        virt_viewer_app_activate(app, &error);
+        if (error) {
+            /* we may want to consolidate error reporting in
+               app_activate() instead */
+            g_warning("%s", error->message);
+            g_clear_error(&error);
+        }
+        break;
+    }
+
+    return 0;
+}
+
 static void
 virt_viewer_conn_event(virConnectPtr conn G_GNUC_UNUSED,
                        int reason,
@@ -535,6 +568,9 @@ virt_viewer_dispose (GObject *object)
             virConnectDomainEventDeregisterAny(priv->conn,
                                                priv->domain_event);
             priv->domain_event = -1;
+            virConnectNetworkEventDeregisterAny(priv->conn,
+                                                priv->network_event);
+            priv->network_event = -1;
         }
         virConnectUnregisterCloseCallback(priv->conn,
                                           virt_viewer_conn_event);
@@ -830,7 +866,15 @@ virt_viewer_connect(VirtViewerApp *app)
                                                           VIR_DOMAIN_EVENT_CALLBACK(virt_viewer_domain_event),
                                                           self,
                                                           NULL);
-    if (priv->domain_event < 0)
+
+    priv->network_event = virConnectNetworkEventRegisterAny(priv->conn,
+                                                            NULL,
+                                                            VIR_NETWORK_EVENT_ID_LIFECYCLE,
+                                                            VIR_NETWORK_EVENT_CALLBACK(virt_viewer_network_event),
+                                                            self,
+                                                            NULL);
+
+    if (priv->domain_event < 0 || priv->network_event < 0)
         priv->withEvents = FALSE;
     else
         priv->withEvents = TRUE;
-- 
2.1.0