interface-reconfigure: callout to datapath backend class method on rewrite

Use this mechanism to allow the vswitch backend to update the vswitch
configuration's mapping from datapath to XenAPI datamodel Network
UUIDs. The vswitch needs a mechanism to update these when they change
(i.e. on pool join and eject).

Refactor the DatapathFactory method to return the class which the
caller can instantiate or not as the require.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>

diff --git a/xenserver/opt_xensource_libexec_InterfaceReconfigure.py b/xenserver/opt_xensource_libexec_InterfaceReconfigure.py
index 9723c6617ebae65e7b40e4b5cc8eaae4d928c5ca..2b709ad03194270b9a46ad5d43245e3004c73592 100644 (file)
--- a/xenserver/opt_xensource_libexec_InterfaceReconfigure.py
+++ b/xenserver/opt_xensource_libexec_InterfaceReconfigure.py
@@ -803,6 +803,12 @@ class Datapath(object):
     def __init__(self, pif):
         self._pif = pif
 
+    @classmethod
+    def rewrite(cls):
+        """Class method called when write action is called. Can be used
+           to update any backend specific configuration."""
+        pass
+
     def configure_ipdev(self, cfg):
         """Write ifcfg TYPE field for an IPdev, plus any type specific
            fields to cfg
@@ -850,7 +856,7 @@ class Datapath(object):
         """
         raise NotImplementedError
         
-def DatapathFactory(pif):
+def DatapathFactory():
     # XXX Need a datapath object for bridgeless PIFs
 
     try:
@@ -862,9 +868,9 @@ def DatapathFactory(pif):
     
     if network_backend == "bridge":
         from InterfaceReconfigureBridge import DatapathBridge
-        return DatapathBridge(pif)
+        return DatapathBridge
     elif network_backend in ["openvswitch", "vswitch"]:
         from InterfaceReconfigureVswitch import DatapathVswitch
-        return DatapathVswitch(pif)
+        return DatapathVswitch
     else:
         raise Error("unknown network backend %s" % network_backend)

diff --git a/xenserver/opt_xensource_libexec_InterfaceReconfigureVswitch.py b/xenserver/opt_xensource_libexec_InterfaceReconfigureVswitch.py
index b102886e0cabb89850dcabd18e1a7ee9881d6ceb..a4b9da751e4626e1ce527cc4cbe7d1563b72ba20 100644 (file)
--- a/xenserver/opt_xensource_libexec_InterfaceReconfigureVswitch.py
+++ b/xenserver/opt_xensource_libexec_InterfaceReconfigureVswitch.py
@@ -358,6 +358,17 @@ class DatapathVswitch(Datapath):
         
         log("Configured for Vswitch datapath")
 
+    @classmethod
+    def rewrite(cls):
+        vsctl_argv = []
+        for pif in db().get_all_pifs():
+            pifrec = db().get_pif_record(pif)
+            if not pif_is_vlan(pif) and pifrec['currently_attached']:
+                vsctl_argv += set_br_external_ids(pif)
+
+        if vsctl_argv != []:
+            datapath_modify_config(vsctl_argv)
+
     def configure_ipdev(self, cfg):
         cfg.write("TYPE=Ethernet\n")
 

diff --git a/xenserver/opt_xensource_libexec_interface-reconfigure b/xenserver/opt_xensource_libexec_interface-reconfigure
index f756bab7bc30350a26912766b071ca1eb667a5af..7d30f97eda62831b80b875c4e6343c80c5601bcb 100755 (executable)
--- a/xenserver/opt_xensource_libexec_interface-reconfigure
+++ b/xenserver/opt_xensource_libexec_interface-reconfigure
@@ -415,7 +415,7 @@ def action_up(pif, force):
     pifrec = db().get_pif_record(pif)
 
     ipdev = pif_ipdev_name(pif)
-    dp = DatapathFactory(pif)
+    dp = DatapathFactory()(pif)
 
     log("action_up: %s" % ipdev)
 
@@ -455,7 +455,7 @@ def action_up(pif, force):
 
 def action_down(pif):
     ipdev = pif_ipdev_name(pif)
-    dp = DatapathFactory(pif)
+    dp = DatapathFactory()(pif)
 
     log("action_down: %s" % ipdev)
 
@@ -463,6 +463,9 @@ def action_down(pif):
 
     dp.bring_down()
 
+def action_rewrite():
+    DatapathFactory().rewrite()
+    
 # This is useful for reconfiguring the mgmt interface after having lost connectivity to the pool master
 def action_force_rewrite(bridge, config):
     def getUUID():
@@ -666,7 +669,7 @@ def main(argv=None):
                 pif = db().get_pif_by_uuid(pif_uuid)
 
             if action == "rewrite":
-                pass
+                action_rewrite()
             else:
                 if not pif:
                     raise Usage("No PIF given")