From ea86b2a9b100e87bb72ce920d594f4ee99ca0e26 Mon Sep 17 00:00:00 2001
From: Javi Fontan <jfontan@opennebula.org>
Date: Wed, 30 Mar 2016 15:35:10 +0200
Subject: [PATCH] bug #4387: skip messages with empty actions

---
 src/mad/ruby/OpenNebulaDriver.rb | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/mad/ruby/OpenNebulaDriver.rb b/src/mad/ruby/OpenNebulaDriver.rb
index d132093f86..b5aa332826 100644
--- a/src/mad/ruby/OpenNebulaDriver.rb
+++ b/src/mad/ruby/OpenNebulaDriver.rb
@@ -184,6 +184,11 @@ private
             args   = str.split(/\s+/)
             next if args.length == 0
 
+            if args.first.empty?
+                STDERR.puts "Malformed message: #{str.inspect}"
+                next
+            end
+
             action = args.shift.upcase.to_sym
 
             if (args.length == 0) || (!args[0])