Check attempt count in runtime
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Zolvaring
Aug 6, 2019, 3:16:46 PM8/6/19
to Ansible Project
I'm trying to work with an API in an idempotent and DRY fashion and cannot find a way to do this for the life of me. What I want to do is hit an endpoint with POST, detect if the response indicates the resource already exists and, if so, hit it with a PUT on retry in order to make sure it's set properly.
What I have is this <> just for removing needless info:
- name: Configure my thing
uri:
url: https://{{ ansible_hostname }}:<api_endpoint>
method: >-
{% if results is defined and results.attempts is defined and results.attempts >= 1 -%}
PUT
{%- else -%}
POST
{% endif %}
headers:
<some headers>
body: <body>
loop: <series of requests>
register: results
retries: 1
until: item is changed
changed_when: item.status == 201
failed_when:
- item.status != 200
- item.status != 201
- item.status != 409
The condition is never triggered when I run the task and both retries end up with POST. I tried the simpler method jinja2 of "{% if results is not defined %}POST{% else %}PUT{% endif %} but this never triggers as well, and it seems like even on attempt 2 I cannot access `results` to actually trigger any useful modifications to task parameters.
I'd really appreciate any help if anyone knows what can sort me out here. I realize I can break this up into two or more tasks and have versions that do that but I am looking for the best solution here and to me that means DRY and I'm trying to avoid having multiple tasks or blocks for each action.
Zolvaring
Aug 6, 2019, 3:32:52 PM8/6/19
to Ansible Project
So I thought of a workaround using nested loops shortly after posting this. I'm going to leave this open because I think that being aware of retries in runtime should be possible, but I wanted to post the solution for anyone else stuck:
---
# file: tasks/main.yml
- name: Include API configuration items
include_tasks: configure_api_item.yml
loop: "{{ my_api_items }}"
loop_control:
loop_var: __api_item
---
# file: tasks/configure_api_item.yml
- name: Configure API item
uri:
url: <endpoint>
method: "{{ __method }}"
headers:
- <header1>
- <header2>
body: <body>
loop:
- POST
- PUT
register: __results
changed_when:
- __results.status is defined
- __results.status == 201
failed_when:
- __results.status is defined
- __results.status != 200
- __results.status != 201
- __results.status != 409
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