fix for reactor.spawnProcess sending deprecation warning

nova/process.py

@@ -1,12 +1,12 @@
 # vim: tabstop=4 shiftwidth=4 softtabstop=4
 # Copyright [2010] [Anso Labs, LLC]
-# 
+#
 #    Licensed under the Apache License, Version 2.0 (the "License");
 #    you may not use this file except in compliance with the License.
 #    You may obtain a copy of the License at
-# 
+#
 #        http://www.apache.org/licenses/LICENSE-2.0
-# 
+#
 #    Unless required by applicable law or agreed to in writing, software
 #    distributed under the License is distributed on an "AS IS" BASIS,
 #    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -118,7 +118,7 @@ class BackRelayWithInput(_BackRelay):
 
     def errReceivedIsGood(self, text):
         self.stderr.write(text)
-    
+
     def connectionMade(self):
         if self.startedDeferred:
             self.startedDeferred.callback(self)
@@ -151,6 +151,11 @@ def getProcessOutput(executable, args=None, env=None, path=None, reactor=None,
     d = defer.Deferred()
     p = BackRelayWithInput(
             d, startedDeferred=startedDeferred, error_ok=error_ok, input=input)
+    # VISH: commands come in as unicode, but self.executes needs
+    #       strings or process.spawn raises a deprecation warning
+    executable = str(executable)
+    if not args is None:
+        args = [str(x) for x in args]
     reactor.spawnProcess(p, executable, (executable,)+tuple(args), env, path)
     return d
 
@@ -167,7 +172,7 @@ class ProcessPool(object):
 
     def simpleExecute(self, cmd, **kw):
         """ Weak emulation of the old utils.execute() function.
-        
+
         This only exists as a way to quickly move old execute methods to
         this new style of code.
 
@@ -190,7 +195,7 @@ class ProcessPool(object):
 
         d.process = None
         d.started = started
-        
+
         d.addCallback(lambda _: getProcessOutput(*args, **kw))
         d.addBoth(self._release)
         return d