[v3 22/32] Add object event namespaces for the event IDs

[Cédric Bosdonnat <cbosdonnat@xxxxxxxx>]

Each unique event ID will thus be composed by 1 byte for the namespace
and 1 byte for a namespace-specific ID. The namespace for domain event
needs to be 0 for compatibility reasons.
---
 src/conf/domain_event.c | 10 ++++++++--
 src/conf/domain_event.h |  8 ++++++++
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/src/conf/domain_event.c b/src/conf/domain_event.c
index 3c14cec..8462754 100644
--- a/src/conf/domain_event.c
+++ b/src/conf/domain_event.c
@@ -1910,11 +1910,17 @@ virObjectEventStateDispatchFunc(virConnectPtr conn,
                                 void *opaque)
 {
     virObjectEventStatePtr state = opaque;
+    virEventNamespaceID namespace = (event->eventID & 0xFF00) >> 8;
 
     /* Drop the lock whle dispatching, for sake of re-entrancy */
     virObjectEventStateUnlock(state);
-    virDomainEventDispatchDefaultFunc(conn, event,
-            VIR_DOMAIN_EVENT_CALLBACK(cb), cbopaque, NULL);
+    switch (namespace)
+    {
+        case VIR_EVENT_NAMESPACE_DOMAIN:
+            virDomainEventDispatchDefaultFunc(conn, event,
+                    VIR_DOMAIN_EVENT_CALLBACK(cb), cbopaque, NULL);
+            break;
+    }
     virObjectEventStateLock(state);
 }
 
diff --git a/src/conf/domain_event.h b/src/conf/domain_event.h
index 647b7e4..ec1b3d6 100644
--- a/src/conf/domain_event.h
+++ b/src/conf/domain_event.h
@@ -28,6 +28,14 @@
 
 # include "domain_conf.h"
 
+
+/** Event IDs are computed in the following way:
+    virEventNamespaceID << 8 + vir*EventId
+  */
+typedef enum {
+    VIR_EVENT_NAMESPACE_DOMAIN = 0, /* 0 to keep value of virDomainEventId unchanged */
+} virEventNamespaceID;
+
 typedef struct _virObjectEventCallback virObjectEventCallback;
 typedef virObjectEventCallback *virObjectEventCallbackPtr;
 
-- 
1.8.4.4

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