merging (environment) dicts?

[Dick Davies]

I've got a task that needs a proxy environment car along with some app-specific env vars to be set.

seems like I can only apply one dict to the environment: field for the task.

does anyone know if I can merge these dicts in Ansible ? this is within a role if that makes any difference.

Thanks!

[Serge van Ginderachter]

On 7 May 2014 18:53, Dick Davies <rasp...@gmail.com> wrote:

does anyone know if I can merge these dicts in Ansible ? this is within a role if that makes any difference.

​You can, but it's general config only, so all or nothing:

$ grep merge ansible.cfg 

# hash can be merged, or replaced

hash_behaviour=merge

​Serge​

[Andrew Pashkin]

What if it is dict of dicts?

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[Serge van Ginderachter]

On 7 May 2014 19:17, Andrew Pashkin <andrew....@gmx.co.uk> wrote:

What if it is dict of dicts?

With that merge setting you will also get deep merge.​

[Dick Davies]

Thanks Serge

trouble is i need the replace behaviour elsewhere in the play >_<

Looks like I'll have to do a tactical dirty hack with set_fact and
inline jinja2 or something.

[Michael DeHaan]

You may be able to try this directly in Jinja2.

Warning:  NOT TESTED

environment:  "{{ base_env.update(my_env) }}"

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[Dick Davies]

Thanks, I gave up and went with a shell script due to time pressures,
but will bookmark this approach for next time :)

> https://groups.google.com/d/msgid/ansible-project/CA%2BnsWgzZmEY%3DdCu2xXx521LdvB9w9TRMQ9JENi0Z8Uaruhm11Q%40mail.gmail.com.

[Andrew Pashkin]

Kind of works:

- name: test playbook
  hosts: 127.0.0.1
  connection: local
  gather_facts: no
  vars:
    - somevar: {'a': 1}
    - anothervar: {'b': 2}
  tasks:
    - debug: msg="{{ somevar.update(anothervar) }}{{ somevar }}"

But it is desireable to have merge_dicts filter for that.

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[Jiri]

On Wednesday, May 21, 2014 at 10:41:08 AM UTC+1, Andrew Pashkin wrote:

But it is desireable to have merge_dicts filter for that.

I have created a pull request to extend the union filter with support to merge two dicts:

https://github.com/ansible/ansible/pull/10483

Please feel free to comment on this feature there.