NSBperf: fix bad sigint handler

This is why we don't do things at module
import time.

when we import this module it makes a bad
sigint handler.  Only load signal handlers
at runtime.

Also fix handler to take *args, **kwargs.

Unittest failures:

>     time.sleep(0.01)
E     TypeError: handler() takes 0 positional arguments but 2 were given

Change-Id: I4296a4bdef0e5f4d58b0503dcbc834f3bef0feeb
Signed-off-by: Ross Brattain <ross.b.brattain@intel.com>

2 files changed, 3 insertions, 4 deletions

diff --git a/tests/unit/cmd/test_NSBperf.py b/tests/unit/cmd/test_NSBperf.py
index 5bd248a84..e1b4da7fc 100644
--- a/tests/unit/cmd/test_NSBperf.py
+++ b/tests/unit/cmd/test_NSBperf.py
@@ -29,7 +29,7 @@ from yardstick.cmd import NSBperf
 class TestHandler(unittest.TestCase):
     def test_handler(self, test):
         subprocess.call = mock.Mock(return_value=0)
-        self.assertRaises(SystemExit, NSBperf.handler)
+        self.assertRaises(SystemExit, NSBperf.sigint_handler)
 
 
 class TestYardstickNSCli(unittest.TestCase):
diff --git a/yardstick/cmd/NSBperf.py b/yardstick/cmd/NSBperf.py
index f158d57f4..011990a3d 100755
--- a/yardstick/cmd/NSBperf.py
+++ b/yardstick/cmd/NSBperf.py
@@ -39,13 +39,11 @@ if not PYTHONPATH or not VIRTUAL_ENV:
     raise SystemExit(1)
 
 
-def handler():
+def sigint_handler(*args, **kwargs):
     """ Capture ctrl+c and exit cli """
     subprocess.call(["pkill", "-9", "yardstick"])
     raise SystemExit(1)
 
-signal.signal(signal.SIGINT, handler)
-
 
 class YardstickNSCli(object):
     """ This class handles yardstick network serivce testing """
@@ -214,5 +212,6 @@ class YardstickNSCli(object):
         self.run_test(args, test_path)
 
 if __name__ == "__main__":
+    signal.signal(signal.SIGINT, sigint_handler)
     NS_CLI = YardstickNSCli()
     NS_CLI.main()