Filter line from Ansible stdout_lines result - linux

Question

I am trying to filter out a line out of Ansible stdout_lines result. The ansible playbook task I ran was the following shell argument:
- name: VERIFY | Confirm that queue exists properly
shell: aws sqs list-queues --region {{region}}
environment: "{{ aws_cli_environment|d({}) }}"
register: sqs_list
To see the results, I followed it up with a debug:
- debug:
msg: "{{ sqs_list.stdout_lines|list }}"
which gives the following result during the playbook run:
TASK [sqs : debug] ********************************************************************************************************************************************************************************************
ok: [localhost] => {
"msg": [
"{",
" \"QueueUrls\": [",
" \"sampleurl1\",",
" \"sampleurl2\",",
" \"sampleurl3\",",
" \"sampleurl4\",",
" \"https://sampleurl5/test_sqs\"",
" ]",
"}"
]
}
I want ONLY the last url, "test_sqs" to appear under "msg":, I tried the following filter but had no luck:
- name: VERIFY | Find SQS url
command: "{{ sqs_list.stdout_lines|list }} -- formats | grep $sqs"

Answer 1

aws cli generates JSON output by default, use this advantage:
---
- hosts: localhost
gather_facts: no
tasks:
- shell: aws sqs list-queues --region eu-west-1
register: sqs_list
- debug:
msg: "{{ (sqs_list.stdout | from_json).QueueUrls | last }}"
Output:
PLAY [localhost] **********************************
TASK [command] ************************************
changed: [localhost]
TASK [debug] **************************************
ok: [localhost] => {
"msg": "https://eu-west-1.queue.amazonaws.com/xxxxx/test"
}

Answer 2

Script:
---
- name: A simple template
hosts: local
connection: local
gather_facts: False
tasks:
- name: list queue
shell: aws sqs list-queues --region us-east-1 --queue-name-prefix test_sqs --query 'QueueUrls[*]' --output text
register: sqs_list
- debug:
msg: "{{ sqs_list.stdout_lines|list }}"
Output:
ok: [localhost] => {
"msg": [
"https://queue.amazonaws.com/xxxxxxxxx/test_sqs-198O8HG46WK1Z"
]
}
You can make use of the --queue-name-prefix parameter to list only queues which is starting with name test_sqs. If there is only one queue with that name, you can use this solution.