guest: Remove default_cb usage

This lets us simplify things in create.py a bit, since we don't
need to manually encode a UUID

virtManager/create.py

@@ -1566,13 +1566,6 @@ class vmmCreate(vmmGObjectUI):
         if machine:
             guest.os.machine = machine
 
-        # Generate UUID (makes customize dialog happy)
-        try:
-            guest.uuid = util.randomUUID(guest.conn)
-        except Exception as e:
-            self.err.show_err(_("Error setting UUID: %s") % str(e))
-            return None
-
         # OS distro/variant validation
         try:
             if variant:
@@ -2142,19 +2135,22 @@ class vmmCreate(vmmGObjectUI):
             return False
 
         logging.debug("Starting create finish() sequence")
-        guest = self._guest
-
-        # Start the install
         self._failed_guest = None
-        self.set_finish_cursor()
 
-        if not self.widget("summary-customize").get_active():
-            self._start_install(guest)
-            return
-
-        logging.debug("User requested 'customize', launching dialog")
         try:
-            self._show_customize_dialog(guest)
+            self.set_finish_cursor()
+
+            # This encodes all the virtinst defaults up front, so the customize
+            # dialog actually shows disk buses, cache values, default devices,
+            # etc. Not required for straight start_install but doesn't hurt.
+            self._guest.set_install_defaults()
+
+            if not self.widget("summary-customize").get_active():
+                self._start_install(self._guest)
+                return
+
+            logging.debug("User requested 'customize', launching dialog")
+            self._show_customize_dialog()
         except Exception as e:
             self.reset_finish_cursor()
             self.err.show_err(_("Error starting installation: ") + str(e))
@@ -2169,8 +2165,9 @@ class vmmCreate(vmmGObjectUI):
         self._customize_window = None
         window.cleanup()
 
-    def _show_customize_dialog(self, guest):
-        virtinst_guest = vmmDomainVirtinst(self.conn, guest, self._guest.uuid)
+    def _show_customize_dialog(self):
+        guest = self._guest
+        virtinst_guest = vmmDomainVirtinst(self.conn, guest, guest.uuid)
 
         def start_install_wrapper(ignore, guest):
             if not self.is_visible():

virtManager/domain.py

@@ -1909,10 +1909,6 @@ class vmmDomainVirtinst(vmmDomain):
         vmmDomain.__init__(self, conn, backend, key)
         self._orig_xml = None
 
-        # This encodes all the virtinst defaults up front, so the customize
-        # dialog actually shows disk buses, cache values, default devices, etc.
-        backend.set_install_defaults()
-
         self._refresh_status()
         logging.debug("%s initialized with XML=\n%s", self, self._XMLDesc(0))
 

virtinst/guest.py

@@ -138,7 +138,6 @@ class Guest(XMLBuilder):
         self.x86_cpu_default = self.cpu.SPECIAL_MODE_HOST_MODEL_ONLY
 
         self.__osinfo = None
-        self._random_uuid = None
         self._install_cdrom_device = None
         self._defaults_are_set = False
 
@@ -169,7 +168,6 @@ class Guest(XMLBuilder):
             self.maxmemory = val
         return val
     memory = XMLProperty("./currentMemory", is_int=True,
-                         default_cb=lambda s: 1,
                          set_converter=_set_memory)
     maxmemory = XMLProperty("./memory", is_int=True)
     hotplugmemorymax = XMLProperty("./maxMemory", is_int=True)
@@ -184,21 +182,14 @@ class Guest(XMLBuilder):
             self.curvcpus = val
         return val
     vcpus = XMLProperty("./vcpu", is_int=True,
-                        set_converter=_set_vcpus,
-                        default_cb=lambda s: 1)
+                        set_converter=_set_vcpus)
     curvcpus = XMLProperty("./vcpu/@current", is_int=True)
     vcpu_placement = XMLProperty("./vcpu/@placement")
     cpuset = XMLProperty("./vcpu/@cpuset")
 
-    def _get_default_uuid(self):
-        if self._random_uuid is None:
-            self._random_uuid = util.generate_uuid(self.conn)
-        return self._random_uuid
-    uuid = XMLProperty("./uuid", default_cb=_get_default_uuid)
-
-
+    uuid = XMLProperty("./uuid")
     id = XMLProperty("./@id", is_int=True)
-    type = XMLProperty("./@type", default_cb=lambda s: "xen")
+    type = XMLProperty("./@type")
     bootloader = XMLProperty("./bootloader")
     description = XMLProperty("./description")
     title = XMLProperty("./title")
@@ -749,6 +740,10 @@ class Guest(XMLBuilder):
                 dev.path = None
 
     def _set_defaults(self):
+        if not self.uuid:
+            self.uuid = util.generate_uuid(self.conn)
+        if not self.vcpus:
+            self.vcpus = 1
         if self.os.is_xenpv() or self.type == "vz":
             self.emulator = None