More fun with lists

[Ross Becker]

So, I've found another hiccup with lists.  I'm trying to set a value through a python "split" call, and then access the individual pieces.  I've verified that set_fact does in fact, set a list, because I can use the result for with_items, and it correctly picks up the individual values, but syntax which works for accessing array elements for a list set as a var, does not work for accessing the array elements when set via set_fact and python split.  Here's a small playbook which demonstrates the issue:

- hosts: configurator

  user: root

  gather_facts: False

  vars:

    some_list: [ "foo", "bar", "baz" ]

    ldap_base_dn: "jrbhome.net"

  tasks:

    - name: splittest

      set_fact: ldap_domain_split="{{ldap_base_dn.split(".")}}"

    - name: retrievetest

      debug: msg="Item access {{ some_list[0] }}"

    - name: retrievetest

      debug: msg="Domain part 1 {{ ldap_domain_split[0] }}"

    - name: retrieveloop

      debug: msg="Domain part  {{item}}"

      with_items: ldap_domain_split

The first debug statement works perfectly, shows 'foo' for the value.  The with_items loop works correctly, but the value which comes back from "retrievetest" is '['.  I think it's setting the fact to a string, and accessing characters of the string, rather than correctly picking up that this is an array.... but it's very odd that with_items works in that case.

[Michael DeHaan]

Yep, I'd expect that.

Set fact is not really intended to store list facts at this time -- or at least wasn't written for them.

I think this should be filed as a feature request, or otherwise someone should take a stab at making this module do a little bit more with complex data types.

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Michael DeHaan <mic...@ansibleworks.com>
CTO, AnsibleWorks, Inc.
http://www.ansibleworks.com/

[Matt Martz]

This may be a bug at some level.  But looks like, from my testing, that this is fixed by using something like:

    - name: splittest

      set_fact:

        ldap_domain_split: "{{ ldap_base_dn.split('.') }}”

when you do a single line set_fact:

    - name: splittest

      set_fact: ldap_domain_split="{{ldap_base_dn.split(".")}}”

…something doesn’t convey.

-- 
Matt Martz
ma...@sivel.net