TOSCA functions are not supporting complex data extractions

[Denis Makogon]

In TOSCA simple profile definition there is no mentions that any of node-related functions can't have complex data extraction, for example:

  { get_attribute: [node, attribute, attribute_of_attribute, ...] }

and

  { get_property: [node, property, attribute_of_property, ...] }

But TOSCA parser says that it is not possible to have such function definition.

  File "/Users/denismakogon/Documents/Invader/aio-orchestra/.venv/lib/python3.5/site-packages/toscaparser/tosca_template.py", line 105, in __init__
    self.verify_template()
  File "/Users/denismakogon/Documents/Invader/aio-orchestra/.venv/lib/python3.5/site-packages/toscaparser/tosca_template.py", line 242, in verify_template
    '\n\t'.join(ExceptionCollector.getExceptionsReport()))
toscaparser.common.exception.ValidationError:
The input "/Users/denismakogon/Documents/Invader/aio-orchestra/aio-orchestra-openstack-plugin/examples/orchestra-openstack-authorization.yaml" failed validation with the following error(s):

 ValueError: Illegal arguments for function "get_attribute". Expected arguments: "node-template-name", "attribute-name"

[Monika (970954-monika)]

As mentioned we have tried to pass complex data extractions and we successfully retrieved the results.
e.g,
{ get_attribute: [server, ports, mac_address] }

The above ValueError mentioned is because of giving less than 2 arguments. We have checked it in “tosca-parser/toscaparser/functions.py” which is as follows:

 def validate(self):
 if len(self.args) < 2:
  ExceptionCollector.appendException(
   ValueError(_('Illegal arguments for function "{0}". Expected '
     'arguments: "node-template-name", "req-or-cap"'
     '(optional), "property name"'
     ).format(GET_ATTRIBUTE)))
  return

So can you please be more specific about the bug.

[Bob Haddleton (bob-haddleton)]

@Denis - is this still an issue?

Thanks

Bob