util: Move default_* network bits to deviceinterface

tests/xmlconfig.py

@@ -127,14 +127,13 @@ class TestXMLMisc(unittest.TestCase):
     def testDefaultBridge(self):
         # Test our handling of the default bridge routines
         origfunc = None
-        util = None
         try:
-            util = getattr(virtinst, "util")
-            origfunc = util.default_bridge
+            from virtinst import deviceinterface
+            origfunc = getattr(deviceinterface, "_default_bridge")
 
             def newbridge(ignore_conn):
                 return "bzz0"
-            util.default_bridge = newbridge
+            setattr(deviceinterface, "_default_bridge", newbridge)
 
             dev1 = virtinst.VirtualNetworkInterface(_default_conn)
             dev1.macaddr = "22:22:33:44:55:66"
@@ -165,8 +164,9 @@ class TestXMLMisc(unittest.TestCase):
                                "  <mac address=\"22:22:33:44:55:68\"/>\n"
                                "</interface>\n")
         finally:
-            if util and origfunc:
-                util.default_bridge = origfunc
+            if origfunc:
+                from virtinst import deviceinterface
+                setattr(deviceinterface, "_default_bridge", origfunc)
 
     def testCpustrToTuple(self):
         # Various testing our cpustr handling

virtinst/deviceinterface.py

@@ -18,6 +18,7 @@
 # MA 02110-1301 USA.
 
 import logging
+import os
 import random
 
 from . import util
@@ -52,6 +53,67 @@ def _random_mac(conn):
     return ':'.join(["%02x" % x for x in mac])
 
 
+def _default_route():
+    route_file = "/proc/net/route"
+    if not os.path.exists(route_file):
+        logging.debug("route_file=%s does not exist", route_file)
+        return None
+
+    for line in file(route_file):
+        info = line.split()
+        if len(info) != 11:
+            logging.debug("Unexpected field count=%s when parsing %s",
+                          len(info), route_file)
+            break
+
+        try:
+            route = int(info[1], 16)
+            if route == 0:
+                return info[0]
+        except ValueError:
+            continue
+
+    return None
+
+
+def _default_bridge(conn):
+    if "VIRTINST_TEST_SUITE" in os.environ:
+        return "eth0"
+
+    if conn.is_remote():
+        return None
+
+    dev = _default_route()
+    if not dev:
+        return None
+
+    # New style peth0 == phys dev, eth0 == bridge, eth0 == default route
+    if os.path.exists("/sys/class/net/%s/bridge" % dev):
+        return dev
+
+    # Old style, peth0 == phys dev, eth0 == netloop, xenbr0 == bridge,
+    # vif0.0 == netloop enslaved, eth0 == default route
+    try:
+        defn = int(dev[-1])
+    except:
+        defn = -1
+
+    if (defn >= 0 and
+        os.path.exists("/sys/class/net/peth%d/brport" % defn) and
+        os.path.exists("/sys/class/net/xenbr%d/bridge" % defn)):
+        return "xenbr%d"
+    return None
+
+
+def _default_network(conn):
+    ret = _default_bridge(conn)
+    if ret:
+        return ["bridge", ret]
+
+    # FIXME: Check that this exists
+    return ["network", "default"]
+
+
 class VirtualPort(XMLBuilder):
     _XML_ROOT_NAME = "virtualport"
 
@@ -148,7 +210,7 @@ class VirtualNetworkInterface(VirtualDevice):
         ret = self._default_bridge
         if ret is None:
             ret = False
-            default = util.default_bridge(self.conn)
+            default = _default_bridge(self.conn)
             if default:
                 ret = default
 
@@ -262,7 +324,7 @@ class VirtualNetworkInterface(VirtualDevice):
         if (self.conn.is_qemu_session() or self.conn.is_test()):
             self.type = self.TYPE_USER
         else:
-            self.type, self.source = util.default_network(self.conn)
+            self.type, self.source = _default_network(self.conn)
 
 
 VirtualNetworkInterface.register_type()

virtinst/util.py

@@ -160,34 +160,6 @@ def generate_name(base, collision_cb, suffix="", lib_collision=True,
     raise ValueError(_("Name generation range exceeded."))
 
 
-def default_bridge(conn):
-    if "VIRTINST_TEST_SUITE" in os.environ:
-        return "eth0"
-
-    if conn.is_remote():
-        return None
-
-    dev = default_route()
-    if not dev:
-        return None
-
-    # New style peth0 == phys dev, eth0 == bridge, eth0 == default route
-    if os.path.exists("/sys/class/net/%s/bridge" % dev):
-        return dev
-
-    # Old style, peth0 == phys dev, eth0 == netloop, xenbr0 == bridge,
-    # vif0.0 == netloop enslaved, eth0 == default route
-    try:
-        defn = int(dev[-1])
-    except:
-        defn = -1
-
-    if (defn >= 0 and
-        os.path.exists("/sys/class/net/peth%d/brport" % defn) and
-        os.path.exists("/sys/class/net/xenbr%d/bridge" % defn)):
-        return "xenbr%d"
-    return None
-
 
 def generate_uuid(conn):
     for ignore in range(256):
@@ -199,40 +171,6 @@ def generate_uuid(conn):
 
 
 
-def default_route():
-    route_file = "/proc/net/route"
-    if not os.path.exists(route_file):
-        logging.debug("route_file=%s does not exist", route_file)
-        return None
-
-    d = file(route_file)
-
-    defn = 0
-    for line in d.xreadlines():
-        info = line.split()
-        if (len(info) != 11):  # 11 = typical num of fields in the file
-            logging.warn(_("Invalid line length while parsing %s."),
-                         route_file)
-            logging.warn(_("Defaulting bridge to xenbr%d"), defn)
-            break
-        try:
-            route = int(info[1], 16)
-            if route == 0:
-                return info[0]
-        except ValueError:
-            continue
-    return None
-
-
-def default_network(conn):
-    ret = default_bridge(conn)
-    if ret:
-        return ["bridge", ret]
-
-    # FIXME: Check that this exists
-    return ["network", "default"]
-
-
 def randomUUID(conn):
     if conn.fake_conn_predictable():
         # Testing hack