Module uri - Image to base64 String for JSON object

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1

Hi community,

maybe one of you have an nice idea how to solve my problem.

I want to transfer a logo (jpg) over the ansible tower api “api/v2/settings/ui/”.

`

  • name: Import over API
    uri:
    url: “{{ api_url }}”
    user: “{{ username }}”
    password: “{{ password }}”
    method: PATCH
    body: “{{ lookup(‘template’, ‘logo.j2’) }}”
    force_basic_auth: yes
    body_format: json
    status_code: “200,201”
    validate_certs: no
    `

The template “logo.j2” looks like this:

{ "CUSTOM_LOGO": "data:image/jpeg;base64,/9j/4AAQSkZ.......AKKKKAP/2Q==" }

To get the base64 string I uploaded the image with the Ansible-Tower GUI and call the API GET method. An alternative is to use this website: https://www.base64-image.de/

My goal is to encode the image with ansible or with a jinja2 filter like this:

`
{
“CUSTOM_LOGO”: “{{ lookup(‘file’, ‘image.jpg’) | b64encode }}”
}

`

Thanks for your support.

Alexander

2

This list for Ansible only and not Tower.
For help with Tower contact RedHat support.

3

Hi Kai,

its not an Ansible Tower question. Is general Ansible.

I want to encode a jpg image to base64 to use this image in a JSON object.

This JSON object I want to transfer as body with the Ansible module uri.

Thanks,

Alexander

4

Hi Kai,

its not an Ansible Tower question. Is general Ansible.

I'm sorry, probably read it to fast and jumped to conclusions.

I want to encode a jpg image to base64 to use this image in a JSON object.
This JSON object I want to transfer as body with the Ansible module uri.

The b64decode in Ansible can only handle plain text/ascii, for binary date it gives corrupt result so my hunch that b64encode does the same and you need to use base64 command with command/shell module.

5

Hi,

here is my solution:

`

  • name: Get base64 string
    shell: “/usr/bin/base64 {{ role_path }}/files/{{ ansible_tower_logo_filename }} | tr -d ‘\n’”
    delegate_to: 127.0.0.1
    register: base64_string

  • name: debug base64 string
    debug:
    var: base64_string
    verbosity: 3

  • name: Show template
    debug:
    msg: “{{ lookup(‘template’, ‘ui.j2’) | to_nice_json }}”
    verbosity: 2

  • name: Import over API
    uri:
    url: “{{ api_url }}”
    user: “{{ ansible_tower_inventory_admin_username }}”
    password: “{{ ansible_tower_inventory_admin_password }}”
    method: PATCH
    body: “{{ lookup(‘template’, ‘ui.j2’) }}”
    force_basic_auth: yes
    body_format: json
    status_code: “200,201”
    validate_certs: no
    `

Here the content of the file ui.j2:

{ "CUSTOM_LOGO": "data:image/jpeg;base64,/{{ base64_string.stdout }}", "CUSTOM_LOGIN_INFO": "{{ ansible_tower_login_info_message | default('') }}" }

Thanks for your help
Alexander