OS::stack_id output of nested stack not passed to parent stack correctly

[Johannes Grassler]

According to Heat's documentation it should be possible to return a resource ID
as OS::stack_id output from a nested stack, in order to be able use one of the
resources in the nested stack directly from the parent stack:

http://docs.openstack.org/developer/heat/template_guide/composition.html#making-your-template-resource-more-transparent

We tried this and it fails, since we get what looks like some kind of
serialization artifact instead of the desired resource UUID (a neutron Port ID
in this case). A minimum example to provoke this problem is attached. The
problem is caused by the get_resource lookup in test.yaml:40.

Steps to reproduce:

1. tar -C /tmp -xf test_stackid.tar
2. heat stack-create -e /tmp/test_stackid/env.yaml -f /tmp/test_stackid/test.yaml -P key_name=<nova key name> test_stackid

Stack creation will fail with the following stack_status_reason:

  Resource CREATE failed: BadRequest: Port id arn:openstack:heat::b23a1ea1a6d6481681822ab6242ee703:stacks
  /test_stackid-test_port-3ju4vbax45jz/e2e69284-c9e6-45bc-af62-7c4e414610c4 could not be found. (HTTP 400)

[Steve Baker (steve-stevebaker)]

On 07/03/15 03:42, Johannes Grassler wrote:
> Public bug reported:
>
> According to Heat's documentation it should be possible to return a resource ID
> as OS::stack_id output from a nested stack, in order to be able use one of the
> resources in the nested stack directly from the parent stack:
>
> http://docs.openstack.org/developer/heat/template_guide/composition.html
> #making-your-template-resource-more-transparent
>
This documentation should say that OS::stack_id is available in the
(upcoming) Kilo release of Heat. What version of Openstack is your cloud?

[Johannes Grassler (jgr-launchpad)]

We are running Juno, so I guess that means the bug is in the documentation.

(The example shown in the documentation even specifies heat_template_version: 2014-10-16, which is the Juno one).

[Steve Baker (steve-stevebaker)]

The fix is to clarify in the docs that OS::stack_id was added in Kilo

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/166907

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/166907
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=d06b6c098ba7f25ef8410a83b764c506f2955d08
Submitter: Jenkins
Branch: master

commit d06b6c098ba7f25ef8410a83b764c506f2955d08
Author: Tetiana Lashchova <email address hidden>
Date: Mon Mar 23 18:03:48 2015 +0200

    Add note that OS::stack_id is available since Kilo

    Change-Id: Iccf17494aa9446ebc83b0a8d5cac07594f8cd6a0
    Closes-Bug: #1429154