xenserver: Retrieve vSwitch version from binary in xsconsole

The xsconsole plugin shows status information about Open vSwitch.  The
version information was retrieved from XAPI, but this could cause
problems.  The most easily reproduced is to make a XenServer part of a
pool, then remove it.  The version string is no longer in the
XenServer's local XAPI view, so it reports "<unknown>".  A more direct
way to get the information is to directly query the binary, which is
what this commit does.

Bug #1626

diff --git a/xenserver/usr_lib_xsconsole_plugins-base_XSFeatureVSwitch.py b/xenserver/usr_lib_xsconsole_plugins-base_XSFeatureVSwitch.py
index 45231395df1e0cf5b9368789da663de35f6f1cc7..dbd00a455f96a854d6562cb455cfa6e7a6895648 100644 (file)
--- a/xenserver/usr_lib_xsconsole_plugins-base_XSFeatureVSwitch.py
+++ b/xenserver/usr_lib_xsconsole_plugins-base_XSFeatureVSwitch.py
@@ -32,6 +32,17 @@ class VSwitchService:
         if self.processname == None:
             self.processname = name
 
+    def version(self):
+        try:
+            output = ShellPipe(["service", self.name, "version"]).Stdout()
+        except StandardError, e:
+            log.error("version retrieval error: " + str(e))
+            return "<unknown>"
+        for line in output:
+            if self.processname in line:
+                return line.split()[-1]
+        return "<unknown>"
+
     def status(self):
         try:
             output = ShellPipe(["service", self.name, "status"]).Stdout()
@@ -40,12 +51,12 @@ class VSwitchService:
             return "<unknown>"
         if len(output) == 0:
             return "<unknown>"
-        for l in output:
-            if self.processname not in l:
+        for line in output:
+            if self.processname not in line:
                 continue
-            elif "running" in l:
+            elif "running" in line:
                 return "Running"
-            elif "stop" in l:
+            elif "stop" in line:
                 return "Stopped"
             else:
                 return "<unknown>"
@@ -262,8 +273,8 @@ class XSFeatureVSwitch:
 
         inPane.NewLine()
 
-        versionStr = data.host.other_config({}).get("vSwitchVersion", "<Unknown>")
-        inPane.AddStatusField(Lang("Version", 20), versionStr)
+        inPane.AddStatusField(Lang("Version", 20),
+                              VSwitchService.Inst("vswitch", "ovs-vswitchd").version())
 
         inPane.NewLine()