CODEWITHSUNDEEP
hashansible
Maik
Maik

Reputation: 341

Ansible - use loopItem as hash key with an existing variable

i work with Ansible 2.4.2.0.

I have a playbook and defined a variable host: mymachine. I have a registered variable that looks like:

"json": {
    "results": [
    {
      [...],
      "item": "myname",
      "stdout_lines": "abc"
      [...]
    },
    {
      [...],
      "item": "myname2",
      "stdout_lines": "xyz"
      [...]
    {
    ]
}

I now want to use the values of item as keys of a new hash (together with my host). Something like this task:

-name Create Hash
    set_fact:
      "{{ host[item.item] }}": "{{ item.stdout_lines }}"
    with_items:
      - "{{ json.results }}" `

I want my hash to look like:

"mymachine": {
  "myname": "abc",
  "myname2": "xyz"
 }

I know the iteration of json.results works and item.item and item.stdout_lines are accessible. But the "{{ host[item.item] }}":-part won't work. I tried all combinations of brackets, I get different error messages, depending on what combination of brackets I use.

Hope someone can tell me the correct syntax.

Upvotes: 0

Views: 2001

Answers (1)

techraf
techraf

Reputation: 68559

I want my Hash to look like:

"mymachine": {
  "myname": "abc",
  "myname2": "xyz"
}

If you want to define a dictionary named mymachine, why does your code not even contain the string mymachine?

the "{{ host[item.item] }}":-part won't work

Why should it work, if trying to use it is the first occurrence of host in your code? You refer to a variable without defining it.

Here's correct syntax for what you want to achieve:

- name: Create Hash
  set_fact:
    mymachine: "{{ mymachine | default({}) | combine(myelement) }}"
  vars:
    myelement: "{ '{{ item.item }}':'{{ item.stdout_lines }}' }"
  with_items:
    - "{{ json.results }}"

Upvotes: 2

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