[lnst] SlavePool: Adding a warning when a pool dir is empty

[Jiří Pírko]

commit 53c567a1f83e7f2bc17cb741107f0af316bde50e
Author: Radek Pazdera <rpazdera(a)redhat.com&gt;
Date:   Fri Sep 20 12:53:47 2013 +0200

    SlavePool: Adding a warning when a pool dir is empty
    
    Signed-off-by: Radek Pazdera <rpazdera(a)redhat.com&gt;
    Signed-off-by: Jiri Pirko <jiri(a)resnulli.us&gt;

 lnst/Controller/SlavePool.py |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/lnst/Controller/SlavePool.py b/lnst/Controller/SlavePool.py
index ebd3c2a..33dca41 100644
--- a/lnst/Controller/SlavePool.py
+++ b/lnst/Controller/SlavePool.py
@@ -54,6 +54,9 @@ class SlavePool:
         for dirent in dentries:
             res.append(self.add_file("%s/%s" % (pool_dir, dirent)))
 
+        if len(res) == 0:
+            logging.warn("No machines found in this directory")
+
         max_len = 0
         for m_id, _ in res:
             if len(m_id) > max_len: