Recently I had to write templates containing somewhat long filter
pipelines. Part of the logic involved lookuping current output of the
pipeline in a dictionary (hostvars) and then extracting the value of a
field of the resulting dictionary. In order to keep things decoupled I
wrote two almost trivial plugins
<https://gist.github.com/ValFadeev/9bf421fc1262c9ec7e31>. Here an example:
- name: find another host to join to form a cluster (e.g. Consul)
set_fact:
host_to_join: >
{{
groups['my_group'] | difference([inventory_hostname])
| list
| random
| find_in(hostvars)
| get_key('ec2_private_ip_address')
}}
Just wondering whether there are other existing ways of achieving the same
result, with/without plugins, as surely someone must have faced a similar
task.
Thanks
Valentin
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