How to create a list of dicts

[Ashok]

Hi All,

I have a list  ` logf_dest ` (of log files):

"logf_dest": [
        "/logs/mx/mail.log",
        "/logs/dyn.log",  
        "/logs/apache-servers/other.log"
    ]

I need to form a "list of dicts" called ` logfile_config `, like the below:

- logfile_name: remote.conf
  logfile_pattern: /logs/mx/mail.log
  logfile_owner: root


- logfile_name: remote.conf
  logfile_pattern: /logs/dyn.log
  logfile_owner: root


- logfile_name: remote.conf
  logfile_pattern: /logs/apache-servers/other.log
  logfile_owner: root

I've come this far in doing so:

    - name: Create list of dicts
      set_fact:
        logfile_config: |
           {    
           {% for k in logf_dest %}
           logfile_name: remote.conf
           logfile_pattern: {{ k }}
           logfile_owner: root
           {% endfor %}
           }

But, above is obviously not formatted correctly.

I need help on what I am missing here. 

Thanks in advance.

[Karl Auer]

How dynamic is the content of that source list? One simple approach would be:

- logfile_name: remote.conf
  logfile_pattern: "{{ logf_dest[0] }}"

  logfile_owner: root
- logfile_name: remote.conf

  logfile_pattern: "{{ logf_dest[1] }}"

  logfile_owner: root
- logfile_name: remote.conf

  logfile_pattern: "{{ logf_dest[2] }}"
  logfile_owner: root

If the list is not always three items long, you can do it with a loop:

- set_fact:
     logdict: "{{ loglist |default([]) +
           [  {

                                'logfile_name':    'remote.conf',
                  'logfile_pattern': item,
                 'logfile_owner':   'root'

                            }
           ] }}"
  with_items: "{{ logf_dest }}"

Anyway, something like that. That's off the top of my head, so you may need to correct the syntax a bit, but you get the idea.

Regards, k.

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[Ashok]

The content of the source is very dynamic on each run, hence, going static isn't viable. 

I tried with your logic, like below:

    - name: Form list of dicts
      set_fact:
        logfile_config: "{{ logf_dest |default([]) +

                     [ {
                        'logfile_name': 'remote.conf',
                        'logfile_pattern': item,
                        'logfile_owner':   'root'
                       }
                     ] }}"

      with_items: "{{ logf_dest }}"


    - debug:
        var: logfile_config

It doesn't give the desired output. `logfile_config` is:

TASK [debug] *********************************************************************************************************************************

task path: /home/ansible/playbooks/loghost-new.yml:42

ok: [log-dvl.vpn] => {

    "logfile_config": [

        "/logs/mx/mail.log", 

        "/logs/dyn.log", 

        "/logs/apache-servers/other.log", 

        {

            "logfile_name": "remote.conf", 

            "logfile_owner": "root", 

            "logfile_pattern": "/logs/apache-servers/other.log"

        }

    ]

}

Anything I missed? 

[Kai Stian Olstad]

On 13.03.2019 12:08, Ashok wrote:
> The content of the source is very dynamic on each run, hence, going
> static
> isn't viable.
>
> I tried with your logic, like below:
>
> - name: Form list of dicts
> set_fact:
> logfile_config: "{{ logf_dest |default([]) +

This need to be
logfile_config: "{{ logfile_config |default([]) +

--
Kai Stian Olstad

[Karl Auer]

Sorry about that. I did warn you it was off the top of my head :-)

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[Karl Auer]

As Kai Stian Olstad wrote, I got the target list wrong. The first ocurrence of "loglist" should  be "logdict", OR (even better) do as Kai suggested and substitute "logfile_config" for loglist and logdict.

Regards, K.

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[Ashok]

Hey, it worked :)

Thanks, Kai and Karl.