Inventory pattern matching from lookup plugin

[Randy Syring]

 I want to develop a lookup plugin that would take a string like "mygroup:!badhost" and return the list of host objects that match that pattern.

Based on my inspection of the Ansible source code, it seems like I could probably do that if I can get reference to an instance of the InventoryManager object.  Can i get access to the inventory object from within a lookup plugin?

[Matt Martz]

There is a lookup that already does this called "inventory_hostnames"

https://github.com/ansible/ansible/blob/devel/lib/ansible/plugins/lookup/inventory_hostnames.py

http://docs.ansible.com/ansible/playbooks_loops.html#looping-over-the-inventory

On Thu, Jun 1, 2017 at 1:07 PM Randy Syring <randy....@level12.io> wrote:

 I want to develop a lookup plugin that would take a string like "mygroup:!badhost" and return the list of host objects that match that pattern.

Based on my inspection of the Ansible source code, it seems like I could probably do that if I can get reference to an instance of the InventoryManager object.  Can i get access to the inventory object from within a lookup plugin?

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Matt Martz
@sivel
sivel.net

[Matt Martz]

I suppose to expand on that, once you have the name, you can then use 

hostvars[item] to effectively get the data associated with the host.

Not an actual Host object, but it should have what you need

[Randy Syring]

Great, thanks so much!

Randy Syring
Chief Executive Developer
Direct: 502.276.0459
Office: 812.285.8766

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