Error message for an invalid template

[Sahdev Zala]

The 'heat stack-create' gives an error message if template is invalid but it doesn't tell anything about what's invalid or any other detail that can help user find the error(s) and fix the template.

openstack@plwdevstack:~/devstack$ heat stack-create hello --template-file=/home/openstack/hello-invalid-template.yaml --parameters="KeyName=heat_key"
ERROR: Template not in valid format

We may want to provide a more helpful message.

This is a wishlist.

[Sahdev Zala (spzala)]

I think the simplest recreate scenario would be,
parameters:
  KeyName:
     type: string
    description: Name of an existing key pair to use for the instance
which gives, "ERROR: Template not in valid format"
and doesn't provide any other info.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/51125

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/51125
Committed: http://github.com/openstack/heat/commit/081e5046734162bd4576b6477dbb6f2c486ebacf
Submitter: Jenkins
Branch: master

commit 081e5046734162bd4576b6477dbb6f2c486ebacf
Author: Angus Salkeld <email address hidden>
Date: Mon Oct 14 09:47:46 2013 +1100

    Pass errors from *_format.parse() to the caller

    This gives the user a nice helpful error message, something like:

    ERROR: Template not in valid format: while parsing a block mapping
      in "<unicode string>", line 2, column 3:
          KeyName:
          ^

    Change-Id: I1c0aaa955981eec264e1ff3cc66ad15adc771e72
    Closes-bug: #1226106