clock: Add timer parsing

tests/xmlparse-xml/change-guest-in.xml

@@ -26,7 +26,10 @@
     <feature policy='optional' name='cr8legacy'/>
     <feature name='foo' policy='bar'/>
   </cpu>
-  <clock offset="utc"/>
+  <clock offset="utc">
+    <timer name='rtc' tickpolicy='catchup'/>
+    <timer name='pit' tickpolicy='delay'/>
+  </clock>
   <on_poweroff>destroy</on_poweroff>
   <on_reboot>restart</on_reboot>
   <on_crash>restart</on_crash>

tests/xmlparse-xml/change-guest-out.xml

@@ -30,7 +30,10 @@
     <feature policy="optional" name="cr8legacy"/>
     <feature name="addfeature" policy="require"/>
   </cpu>
-  <clock offset="localtime"/>
+  <clock offset="localtime">
+    <timer name="rtc" tickpolicy="merge"/>
+    <timer name="hpet" present="no"/>
+  </clock>
   <on_poweroff>restart</on_poweroff>
   <on_reboot>destroy</on_reboot>
   <on_crash>destroy</on_crash>

tests/xmlparse.py

@@ -123,6 +123,14 @@ class XMLParseTest(unittest.TestCase):
 
         check = self._make_checker(guest.clock)
         check("offset", "utc", "localtime")
+        guest.clock.remove_timer(guest.clock.timers[0])
+        check = self._make_checker(guest.clock.timers[0])
+        check("name", "pit", "rtc")
+        check("tickpolicy", "delay", "merge")
+        timer = guest.clock.add_timer()
+        check = self._make_checker(timer)
+        check("name", None, "hpet")
+        check("present", None, False)
 
         check = self._make_checker(guest.seclabel)
         check("type", "static", "static")

virtinst/clock.py

@@ -17,10 +17,26 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 # MA 02110-1301 USA.
 
-from virtinst.xmlbuilder import XMLBuilder, XMLProperty
+from virtinst.xmlbuilder import XMLBuilder, XMLChildProperty, XMLProperty
+
+
+class _ClockTimer(XMLBuilder):
+    _XML_ROOT_NAME = "timer"
+
+    name = XMLProperty("./@name")
+    present = XMLProperty("./@present", is_yesno=True)
+    tickpolicy = XMLProperty("./@tickpolicy")
 
 
 class Clock(XMLBuilder):
     _XML_ROOT_NAME = "clock"
 
     offset = XMLProperty("./@offset")
+    timers = XMLChildProperty(_ClockTimer)
+
+    def add_timer(self):
+        obj = _ClockTimer(self.conn)
+        self._add_child(obj)
+        return obj
+    def remove_timer(self, obj):
+        self._remove_child(obj)