Hi Michael:

tosca-parser expects that the input values will be defined already and passed to the ToscaTemplate object in the parsed_params argument.

If you change:

tosca = ToscaTemplate(sys.argv[1])

to:

tosca = ToscaTemplate(sys.argv[1], parsed_params={'cpus': 4})

the output becomes:

Processing node template server
  disk_size: 10 GB
  num_cpus: 4
  mem_size: 4096 MB
  architecture: x86_64
  type: Linux
  distribution: Fedora
  version: 18.0
  min_instances: 1
  max_instances: 1
  secure: True


Hope this helps.

Bob

On 12/17/18 3:25 AM, Michael Still wrote:

Hi,

I'm trying to use tosca-parser to parse CSAR files. Its working quite well, until I hit a wall with capabilities today. Specifically I am testing with the single instance wordpress example CSAR, which uses a get_input for the num_cpus argument for host capabilities for the server.

Based on how properties work, I would expect to get a function back for anything which requires referencing another value, but in the case of capabilities I either get the hardcoded value (strings, ints etc), or a None for values which would be functions if we were talking about prototypes.

Here's a snippet of example code:

#!/usr/bin/python

import sys

from jinja2 import Template

import toscaparser.functions

from toscaparser.tosca_template import ToscaTemplate

tosca = ToscaTemplate(sys.argv[1])

for nodetemplate in tosca.nodetemplates:

    print

    print('Processing node template %s'% nodetemplate.name)

    capabilities = nodetemplate.get_capabilities_objects()

    for cap in capabilities:

        propobjs = cap.get_properties_objects()

        if not propobjs:

            continue

        for po in propobjs:

            print('  %s: %s' %(po.name, po.value))

Which returns this:

$ python _capabilities.py csar_wordpress.zip 

No handlers could be found for logger "tosca.model"

Processing node template wordpress

  network_name: PRIVATE

  initiator: source

  protocol: tcp

  secure: False

Processing node template webserver

  network_name: PRIVATE

  initiator: source

  protocol: tcp

  secure: False

  secure: True

Processing node template mysql_dbms

Processing node template mysql_database

Processing node template server

  secure: True

  min_instances: 1

  max_instances: 1

  mem_size: 4096 MB

  num_cpus: None

  disk_size: 10 GB

  distribution: Fedora

  version: 18.0

  type: Linux

  architecture: x86_64

I would expect num_cpus for the "server" node_template to be a GetInput() function based on its definition in the CSAR, but instead I get None.

Is there an example somewhere of how to correctly access functions for capabilities?

Thanks,

Michael