include error message misleading

[Tom Ekberg]

I distilled the problem down to a simple YAML file:

- hosts: apps2

  vars:
    TOP_BAD: ".."

  tasks:
  - name: check TOP
    debug: msg="{{TOP}}"

  handlers:
    - include: "{{TOP}}/handlers/apache_graceful.yml"

When I save this in inc.yml and run this command:

ansible-playbook -i ../hosts inc.yml

I get this output:

ERROR: file could not read: /home/tekberg/src/ansible_scripts/provision_apps2/{{TOP}}/handlers/apache_graceful.yml

The actual problem is that the variable TOP is not defined, which should have been detected prior to trying to open the file. If I change TOP_BAD to TOP, the script runs to completion with no errors.

Why didn't the interpolation code complain that TOP was undefined?

[Michael DeHaan]

"Why didn't the interpolation code complain that TOP was undefined?"

Because we developers are horrible terrible people that want to cause you pain.

I would ask what version of Ansible you are using and if undefined variable detection is turned on.  If on, I would expect this to result in an error, and if not, filing a github ticket would be a good thing.

Thanks!

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