[Libosinfo] [osinfo-db PATCH] RFC: schema: Add support to Guest Features

[Fabiano Fidêncio]

One of the requests that came from KubeVirt is that would be really nice
if we could expose Guest supported features.

In order to do so, I came up with this *prototype* and I'd like to ask
for some review of the schema before I actually start implementing
something on libosinfo side.

One example of how it'll look like is:
<os>
  <features>
    <feature removed="true">device-hotplug</feature>
    <feature>cpu-hotplug</feature>
    <feature>NUMA</feature>
  </features>
</os>

>From the start:
- features *will* be inrited between OSes, by default.
- the feature element has an optional "removed" attribute which, by
default, is "false".

Is this approach okay?

Signed-off-by: Fabiano Fidêncio <fidencio at redhat.com>
---
 data/schema/osinfo.rng.in | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/data/schema/osinfo.rng.in b/data/schema/osinfo.rng.in
index 6693391..73d6037 100644
--- a/data/schema/osinfo.rng.in
+++ b/data/schema/osinfo.rng.in
@@ -518,6 +518,25 @@
     </element>
   </define>
 
+  <define name='features-rel'>
+    <element name='features'>
+      <oneOrMore>
+        <element name='feature'>
+          <choice>
+            <value>cpu-hotplug</value>
+            <value>device-hotplug</value>
+            <value>NUMA</value>
+          </choice>
+          <optional>
+            <attribute name='removed'>
+              <ref name='bool'/>
+            </attribute>
+          </optional>
+        </element>
+      </oneOrMore>
+    </element>
+  </define>
+
   <define name='os'>
     <element name='os'>
       <interleave>
@@ -549,6 +568,9 @@
         <zeroOrMore>
           <ref name='driver'/>
         </zeroOrMore>
+        <zeroOrMore>
+          <ref name='features-rel'/>
+        </zeroOrMore>
       </interleave>
     </element>
   </define>
-- 
2.19.1