Convert list to values in dictionary with Ansible

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I am trying to use the Ansible gather_facts data from a Linux host as input:

    "ansible_fibre_channel_wwn": [
        "1000e0071bd4d0ed",
        "10009440c90f9d85",
        "1000e0071bce95f3",
        "1000e0071bce95f2",
        "1000e0071bd4d0ec",
        "10009440c90f9d84"
    ],

And would like to create a dictionary using the above list items for dictionary values of a new "wwpn" key:

        fc_initiators: [
            {wwpn: '10:00:e0:07:1b:d4:d0:ed'}, 
            {wwpn: '10:00:94:40:c9:0f:9d:85'}, 
            {wwpn: '10:00:e0:07:1b:ce:95:f3'}, 
            {wwpn: '10:00:e0:07:1b:ce:95:f2'}, 
            {wwpn: '10:00:e0:07:1b:d4:d0:ec'}, 
            {wwpn: '10:00:94:40:c9:0f:9d:84'}
        ]

This regex seems sufficient for converting the initial list items into colonized WWPN:

"{{ ansible_fibre_channel_wwn | 
map('regex_replace', '^(..)(..)(..)(..)(..)(..)(..)(..)$', '\\1:\\2:\\3:\\4:\\5:\\6:\\7:\\8')|list }}"

I'm not sure where to start with the list->dictionary conversion though. Any help is much appreciated.

Thanks!

ansible
1 Answers

"colonize" the items first, e.g.

    - set_fact:
        wwn_colonized: "{{ wwn_colonized|default([]) +
                           [item|map('join')|join(':')] }}"
      loop: "{{ ansible_fibre_channel_wwn|map('batch', 2)|map('list')|list }}"

gives

  wwn_colonized:
  - 10:00:e0:07:1b:d4:d0:ed
  - 10:00:94:40:c9:0f:9d:85
  - 10:00:e0:07:1b:ce:95:f3
  - 10:00:e0:07:1b:ce:95:f2
  - 10:00:e0:07:1b:d4:d0:ec
  - 10:00:94:40:c9:0f:9d:84

Then the task below creates the list of the dictionaries

    - set_fact:
        fc_initiators: "{{ wwn_colonized|
                           map('regex_replace', '^(.*)$', '{wwpn: \\1}')|
                           map('from_yaml')|
                           list }}"

gives

  fc_initiators:
  - wwpn: 10:00:e0:07:1b:d4:d0:ed
  - wwpn: 10:00:94:40:c9:0f:9d:85
  - wwpn: 10:00:e0:07:1b:ce:95:f3
  - wwpn: 10:00:e0:07:1b:ce:95:f2
  - wwpn: 10:00:e0:07:1b:d4:d0:ec
  - wwpn: 10:00:94:40:c9:0f:9d:84

or, the same data in JSON

  fc_initiators|to_nice_json: |-
    [
        {
            "wwpn": "10:00:e0:07:1b:d4:d0:ed"
        },
        {
            "wwpn": "10:00:94:40:c9:0f:9d:85"
        },
        {
            "wwpn": "10:00:e0:07:1b:ce:95:f3"
        },
        {
            "wwpn": "10:00:e0:07:1b:ce:95:f2"
        },
        {
            "wwpn": "10:00:e0:07:1b:d4:d0:ec"
        },
        {
            "wwpn": "10:00:94:40:c9:0f:9d:84"
        }
    ]
user_64825610
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