why does this loop/when fail

[rjwagn...@gmail.com]

Hey all - I think I'm losing my mind.  Can anyone explain why every iteration of task 3 is being skipped (compare w/ task 2, especially)?

(ansible2_12_8) rowagn@mlb656 client % cat d.yml
- hosts: all
  gather_facts: no
  vars:
    s: '1 2 3'
    t: p1_xyz
    t_list:
      - p1_xyz
      - p2_xyz

  tasks:
  - name: task 1
    debug:
      msg: '{{ ( t | regex_replace("^p(\d+).*$", "\1") ) in s }}'

  - name: task 2
    debug:
      msg: '{{ ( item | regex_replace("^p(\d+).*$", "\1") ) in s }}'
    loop: "{{ t_list }}"

  - name: task 3
    debug:
      msg: "{{ item }} is in s"
    loop: "{{ t_list }}"
    when: ( item | regex_replace("^p(\d+).*$", "\1") ) in s
(ansible2_12_8) rowagn@mlb656 client % ansible-playbook d.yml -i ~/localhost

PLAY [all] **********************************************************************************************************

TASK [task 1] *******************************************************************************************************
ok: [localhost] => {
    "msg": true
}

TASK [task 2] *******************************************************************************************************
ok: [localhost] => (item=p1_xyz) => {
    "msg": true
}
ok: [localhost] => (item=p2_xyz) => {
    "msg": true
}

TASK [task 3] *******************************************************************************************************
skipping: [localhost] => (item=p1_xyz)
skipping: [localhost] => (item=p2_xyz)
skipping: [localhost]

PLAY RECAP **********************************************************************************************************
localhost                  : ok=2    changed=0    unreachable=0    failed=0    skipped=1    rescued=0    ignored=0

I've started at this for hours.

Rob

[Andrew Latham]

Rob

Trying to follow along, So on Task 3 you want to iterate over the list t_list and match if the digit is in variable s? First thought is that you are testing if an int is a string.

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- Andrew "lathama" Latham -

[Andrew Latham]

ok, here it is..... should be \\1 vs \1 in your replacement and test(is) on string contents(in)

  - name: task 3
    debug:

      msg: "{{ item }} is in the s"
    loop: "{{ t_list }}"
    when: ( item | regex_replace("^p(\d+).*$", "\\1") ) is in s

  - name: task 3.orig

    debug:
      msg: "{{ item }} is in s"
    loop: "{{ t_list }}"
    when: ( item | regex_replace("^p(\d+).*$", "\1") ) in s

TASK [task 3] ****************************************************************************************************

ok: [localhost] => (item=p1_xyz) => {

   "msg": "p1_xyz is in the s"

}
ok: [localhost] => (item=p2_xyz) => {

   "msg": "p2_xyz is in the s"
}

TASK [task 3.orig] ***********************************************************************************************

skipping: [localhost] => (item=p1_xyz)  
skipping: [localhost] => (item=p2_xyz)  
skipping: [localhost]

PLAY RECAP *******************************************************************************************************

localhost                  : ok=3    changed=0    unreachable=0    failed=0    skipped=1    rescued=0    ignored=0
  

I did this in a hurry, so there may be mistakes or more awesome ways of doing this. YMMV

[rjwagn...@gmail.com]

Wow.  Never would have thought to try that.  Escaping in YAML/Jinja is such an unintuitive mess.  Thanks so much, Andrew.

[Stefan Hornburg (Racke)]

On 21/11/2022 14:01, rjwagn...@gmail.com wrote:
> Wow.  Never would have thought to try that.  Escaping in YAML/Jinja is such an unintuitive mess.  Thanks so much, Andrew.

It is easier though when you use single quotes for the arguments of the regex_replace filter.

Regards

           Racke

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>
>
>
> --
> - Andrew "lathama" Latham -
>
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>
> --
> - Andrew "lathama" Latham -
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Automation expert - Ansible and friends
Linux administrator & Debian maintainer
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[Rob Wagner]

Thanks Racke, but I just tried:

  - name: task 3
    debug:
      msg: "{{ item }} is in s"
    loop: "{{ t_list }}"
    when: ( item | regex_replace('^p(\d+).*$', '\1') ) in s

It fails.  Only works with \\1.

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