Todd's dictionary lookup is elegant and flexible. I'd go with that model.
It supports any number of choices and gracefully gives a default value.
Walter
--
Walter Rowe, Division Chief
Infrastructure Services, OISM
Mobile: 202.355.4123
On Jul 17, 2023, at 10:29 PM, Todd Lewis <uto...@gmail.com> wrote:
Hello, David.
You could use a lookup table implemented as a simple dict. If you only need it
in one task, you can define it in that task's vars section as I've done below,
or farther "up" in host_vars, group_vars, etc., as long as it's defined
somewhere. Here's a simple demo. I'm mapping colors to veggies, but you could
map to file names or whatever. Be sure to handle the "missing" case.
[utoddl@tango ansible]$ cat select-artifact.yml
---
- name: Select artifact based on value
hosts: localhost
gather_facts: false
tasks:
- name: Match an artifact based on a value
ansible.builtin.debug:
msg: "Value {{ item }} matches artifact {{ artifacts[item] |
default('!missing!') }}."
vars:
artifacts:
green: cucumbers
red: tomatoes
purple: cabage
yellow: squash
loop:
- red
- orange
- yellow
- green
- blue
- indigo
- violet
[utoddl@tango ansible]$ ansible-playbook select-artifact.yml
PLAY [Select artifact based on value]
*********************************************************
TASK [Match an artifact based on a value]
*****************************************************
ok: [localhost] => (item=red) => {
"msg": "Value red matches artifact tomatoes."
}
ok: [localhost] => (item=orange) => {
"msg": "Value orange matches artifact !missing!."
}
ok: [localhost] => (item=yellow) => {
"msg": "Value yellow matches artifact squash."
}
ok: [localhost] => (item=green) => {
"msg": "Value green matches artifact cucumbers."
}
ok: [localhost] => (item=blue) => {
"msg": "Value blue matches artifact !missing!."
}
ok: [localhost] => (item=indigo) => {
"msg": "Value indigo matches artifact !missing!."
}
ok: [localhost] => (item=violet) => {
"msg": "Value violet matches artifact !missing!."
}
PLAY RECAP
************************************************************************************
localhost : ok=1 changed=0 unreachable=0 failed=0
skipped=0 rescued=0 ignored=0
Cheers,
--
Todd
On 7/14/23 2:00 PM, David Nadelson wrote:
Hi All,
I'm a DBA learning to use ansible to automate. I'm wondering if anyone can
point me to docs on how to use ansible to select a file based on the value of a
variable. i.e. if variable=x than choose 1.txt if variable=y then choose
2.txt.
Thanks,
David
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