validate: check the version of python-notario

If the version of python-notario is < 0.0.13 an error message is given
like "TypeError: validate() got an unexpected keyword argument
'defined_keys'", which is not helpful in figuring
out you've got an incorrect version of python-notario.

This check will avoid that situation by telling the user that they need
to upgrade python-notario before they hit that error.

Signed-off-by: Andrew Schoen <aschoen@redhat.com>

diff --git a/plugins/actions/validate.py b/plugins/actions/validate.py
index 12667404e4309360d806703f43314470b0ca0837..5cedd83e71a1700e127b32bce9db6042f985ed2c 100644 (file)
--- a/plugins/actions/validate.py
+++ b/plugins/actions/validate.py
@@ -1,5 +1,6 @@
 
 from ansible.plugins.action import ActionBase
+from distutils.version import LooseVersion
 
 try:
     from __main__ import display
@@ -14,6 +15,11 @@ except ImportError:
     display.error(msg)
     raise SystemExit(msg)
 
+if LooseVersion(notario.__version__) < LooseVersion("0.0.13"):
+    msg = "The python-notario libary has an incompatible version. Version >= 0.0.13 is needed, current version: %s" % notario.__version__
+    display.error(msg)
+    raise SystemExit(msg)
+
 from notario.exceptions import Invalid
 from notario.validators import types, chainable, iterables
 from notario.decorators import optional