no change notify

[anatoly techtonik]

Is it possible to notify handler if task didn't change anything?

I'm creating a backup prior to executing a task, and want to

remove it if nothing changed. Currently I do it like so:

  - command: cp {{backsrc}} {{backdst}}

  - apt_repository: repo="{{ item }}" state=absent update_cache=false
    register: aptrem
    with_items: reporem

  - apt_repository: repo="{{ item }}" state=present update_cache=false
    register: aptadd
    with_items: repoadd

  - command: rm {{backdst}}
    when: aptrem.changed == 0 and aptadd.changed == 0

  - apt: update_cache=true
    when: aptrem.changed != 0 or aptadd.changed != 0

[Serge van Ginderachter]

You could use the changed_when: keyword to set when a task should be seen as 'changed'

changed_when: not aptrem.changed

perhaps?

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[anatoly techtonik]

changes status is set correctly. I just want to know if it is possible
to use handler + notify instead of passing the state through a variable.

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[Serge van Ginderachter]

On 3 March 2014 20:04, anatoly techtonik <tech...@gmail.com> wrote:

changes status is set correctly. I just want to know if it is possible
to use handler + notify instead of passing the state through a variable.

Handlers get triggered on a changed state, from what you said, you want to trigger it when 'not changed', so hence my example.

There's no way to trigger a handler while keeping the changed: false state.

I'll agree that the changed states get weird in this case :)​

Serge

[anatoly techtonik]

Yes. I better keep my approach. =)