get_attr used within list_join in SoftwareConfig returns none

[Tomas Sedovic]

Using the template below with:

    `heat stack-create mystack -f overcloud.yaml -P image=fedora-20.x86_64 -P flavor=m1.small`

results in:

    ERROR: Property error : my_config: config "list_join" must operate on a list

This seems to happen because `{get_attr: [servers, name]}` returns None during validation.

The template:

heat_template_version: 2014-10-16

description: "software config using a joined list of ResourceGroup's inner attributes"

parameters:

  key_name:
    default: default
    type: string
  flavor:
    type: string
  image:
    type: string

resources:
  servers:
    type: OS::Heat::ResourceGroup
    properties:
      count: 1
      resource_def:
        type: OS::Nova::Server
        properties:
          flavor: {get_param: flavor}
          image: {get_param: image}
          key_name: {get_param: key_name}

  my_config:
    type: OS::Heat::StructuredConfig
    properties:
      config:
        nodes:
          list_join:
          - ','
          - {get_attr: [servers, name]}

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/115379

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/115379
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=61a9d167c0f36a2846e39fd33a77ce2755801fe6
Submitter: Jenkins
Branch: master

commit 61a9d167c0f36a2846e39fd33a77ce2755801fe6
Author: Tomas Sedovic <email address hidden>
Date: Tue Aug 19 18:35:06 2014 +0200

    Use empty list in list_join for validation

    Calling list_join on the list of ResourceGroup's attributes in a
    SoftwareConfig fails during template validation with:

    ERROR: Property error : my_config: config "list_join" must operate on a
    list

    Closes-Bug: 1358831
    Change-Id: I39d2da7a28ba53fbe3a95bff0198fa5c2f87aa3b

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/icehouse
Review: https://review.openstack.org/121139

[OpenStack Infra (hudson-openstack)]

Change abandoned by Lars Kellogg-Stedman (<email address hidden>) on branch: stable/icehouse
Review: https://review.openstack.org/121139
Reason: This appears to have been merged from some other review.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/121139
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=678ea1315e4b2a0f47134679418be7d9f77a32b5
Submitter: Jenkins
Branch: stable/icehouse

commit 678ea1315e4b2a0f47134679418be7d9f77a32b5
Author: Tomas Sedovic <email address hidden>
Date: Tue Aug 19 18:35:06 2014 +0200

    Use empty list in list_join for validation

    Calling list_join on the list of ResourceGroup's attributes in a
    SoftwareConfig fails during template validation with:

    ERROR: Property error : my_config: config "list_join" must operate on a
    list

    Closes-Bug: 1358831
    Change-Id: I39d2da7a28ba53fbe3a95bff0198fa5c2f87aa3b
    (cherry picked from commit 61a9d167c0f36a2846e39fd33a77ce2755801fe6)