[lnst] ControllerAPI: adding get_alias method to ControllerAPI

[Jiří Pírko]

commit 9c115c7faa6b909f981152bd4334dbfdd1ddc342
Author: Jan Tluka <jtluka(a)redhat.com&gt;
Date:   Tue Mar 18 18:38:06 2014 +0100

    ControllerAPI: adding get_alias method to ControllerAPI
    
    ControllerAPI now provides get_alias() method to get alias defined in the
    recipe XML.
    
    Example:
    
    my_value = ctl.get_alias("my_alias")
    
    The code above gets the value of the alias named "my_alias" previously
defined
    in <lnstrecipe> namespace, e.g:
    
    <lnstrecipe>
        <define>
            <alias name="my_alias" value="my_value"/>
        </define>
        ...
    </lnstrecipe>
    
    Signed-off-by: Jan Tluka <jtluka(a)redhat.com&gt;
    Signed-off-by: Jiri Pirko <jiri(a)resnulli.us&gt;

 lnst/Controller/Task.py |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)
---
diff --git a/lnst/Controller/Task.py b/lnst/Controller/Task.py
index b028231..10c9f02 100644
--- a/lnst/Controller/Task.py
+++ b/lnst/Controller/Task.py
@@ -78,6 +78,18 @@ class ControllerAPI(object):
         cmd = {"type": "ctl_wait", "seconds":
int(seconds)}
         return self._ctl._run_command(cmd)
 
+    def get_alias(self, alias):
+        """
+            Get the value of user defined alias.
+
+            :param alias: name of user defined alias
+            :type alias: string
+
+            :return: value of a user defined alias
+            :rtype: string
+        """
+        return self._ctl._get_alias(alias)
+
 class HostAPI(object):
     """ An API class representing a host machine. """