resource show returns 'stack or resource not found' for a resource yet to be created

[Unmesh Gurjar]

Branch: master

This is a usability concern raised by a user (here|https://ask.openstack.org/en/question/52292/heat-resource-show-gives-stack-or-resource-not-found/).

Scenario:
1. Create a stack using a template where resource A depends on another resource B (and resource B takes considerable amount of time to create).
2. Check the details of resource A even before resource B is created using 'heat resource-show my-stack A'.

Actual output:
Stack or resource not found: my-stack A

Expected output:
API should return resource with the available details. Though this means that few resource details like attributes, physical_resource_id, etc would be 'null' at this point. Because, this is consistent with the output provided to the user when resource B is CREATE_IN_PROGRESS and does not yet have a physical_resource_id associated!

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/143425

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/143425
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=207872b06012b031b34e5da45823dd26629277f9
Submitter: Jenkins
Branch: master

commit 207872b06012b031b34e5da45823dd26629277f9
Author: Unmesh Gurjar <email address hidden>
Date: Mon Dec 22 16:03:29 2014 +0530

    Return available info for uncreated resource

    The resource show API verified that a resource is defined in stack
    and has an id associated with it. Because of this, for a valid stack
    resource which is not persisted, the resource show API returned the
    error 'stack or resource not found'.
    Fixed by validating only that the resource is defined in a stack
    and return the available information in the resource show API
    response.

    Change-Id: Ic0a031294f4f1dffc3c9978014480d15fd2fa27b
    Closes-bug: #1402531