removing the extra new line from the stdout_lines in ansible

[Bubunia Patra]

Hi all,

I am trying to parse the stdout_lines to find the matching strings in a line. But the problem is stdout_lines adds new line at the end and the match string also contains new line which looks ugly. Any idea how I can fix it?

I tried trim, difference etc after some google around but it does not work inside the jinja template as below. I am stuck here... Can anyone please help?

stdout_lines

ok: [10.10.25.1] => {

    "stdout_lines": [

        "X",

        "B",

        "C",

        "D",

        "E",

        "F",

        "G",

        "H",

        "I",

        "J",

        "A"        

    ]

}

-name : Test match string

 - command: |

        printf "X\nB\nC\n\D\nE\nF\n\G\nH\nI\nJ\nA\n"

        register: cmd

- name: Find the matching string 

  set_fact:

    msg: | 

      {% for line in cmd.stdout_lines %}

      {% if line is defined and 'A' in line %}

      {{ line }}

      {% endif %}   

      {% endfor %}

  when:

    - cmd.stdout_lines is defined 

- debug:

    var: msg

The output looks as below as it adds the new line till the match "A" found(e.g X\n,B\n blah blah) and it looks ugly. But I dont want these new lines in my output. Can anybody please throw some idea how can i fix it?

Actual Output:

===============

TASK [Test : debug] ********************************************************************************************************************************

task path: 

ok: [10.10.25.1] => {

    "msg": "   \n   \n   \n   \n   \n   \n   \n   \n   \n   \n   A"

}

Expected Output:

===============

TASK [Test : debug] ********************************************************************************************************************************

task path: 

ok: [10.10.25.1] => {

    "msg": "A"

}

Some of the links are :

https://github.com/ansible/ansible/issues/15099

Regards

Pradeep

[Matt Martz]

I'd probably just use something like this instead:

- debug:

    msg: "{{ stdout_lines|select('search', 'A')|first }}"

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Matt Martz
@sivel
sivel.net

[Bubunia Patra]

Thanks for your quick help. But I need to use the conditionals for searching multiple  strings. Is it possible? When I use 

({{ stdout_lines|select('search', 'A')|first }}) or ({{ stdout_lines|select('search', 'B')|first }}) it dont work and returning me a generator object. Can you please help?

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[Kosala Atapattu]

this is where filter_plugins may come handy.

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