[PATCH 3/3] Controller: Add version hash comparement on Controller

[Jiri Prochazka]

This patch adds check between version of Controller and each Slave used for
the actual recipe. If the hashes are different, test ends with an error and
informs user on which machine versions differ

Signed-off-by: Jiri Prochazka <jprochaz(a)redhat.com&gt;
---
 lnst/Controller/Machine.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lnst/Controller/Machine.py b/lnst/Controller/Machine.py
index 14a8061..73f1494 100644
--- a/lnst/Controller/Machine.py
+++ b/lnst/Controller/Machine.py
@@ -21,7 +21,7 @@ from xmlrpclib import Binary
 from lnst.Common.Config import lnst_config
 from lnst.Common.NetUtils import normalize_hwaddr
 from lnst.Common.Utils import wait_for, create_tar_archive
-from lnst.Common.Utils import check_process_running
+from lnst.Common.Utils import check_process_running, get_version_hash
 from lnst.Common.NetTestCommand import DEFAULT_TIMEOUT
 
 # conditional support for libvirt
@@ -193,6 +193,10 @@ class Machine(object):
                   "to machine %s, handshake failed!" % hostname
             raise MachineError(msg)
 
+        if slave_desc["version"] != get_version_hash():
+            raise MachineError("Version hash mismatch between this machine "\
+                               "and machine %s (%s)!" % (m_id, hostname))
+
         self._slave_desc = slave_desc
 
         for iface in self._interfaces:
-- 
2.4.3