Performing regex_findall and split() on the same line - regex

Question

Here is the output that I'm trying to parse:
hostname#show bgp vrf vrfname summary | i 1.1
BGP Route Distinguisher: 1.1.1.1:0
BGP router identifier 1.1.1.1, local AS number 2222
1.1.1.3 0 64512 349608 316062 896772 0 0 2w4d 1
I have the following regex that succesfully matches just the last line. Now I need to split that line and view the last index. In this case it is "1", but I will want to fail if that value is "0".
- name: debug test
debug:
msg: "{{show_bgp_sessions.data | regex_findall('\\d+\\.\\d+\\.\\d+\\.\\d+\\s\\s.*')}}"
I tried adding a split in a couple different formats at the end of the "msg" line so that I can grab the last index to compare it in the failed_when statement:
msg: "{{show_bgp_sessions.data | regex_findall('\\d+\\.\\d+\\.\\d+\\.\\d+\\s\\s.*') | split(' ')}}"
But I'm getting the following error msg:
"template error while templating string: no filter named 'split'. String:
I've also tried to use a few different forms of "ends_with" to verify the last index in the string as I've used that a lot in my python experience, but I can't get it to work in ansible.
I can't create a new task to parse the data and perform the split seperately because I need to run this verification through a loop.

Answer 1

When you select the line, reverse the string, and split the first item. For example
msg: "{{ (my_line|reverse).split()|first }}"

Answer 2

Possibly the regex provided by #Thefourthbird is a better solution.
But for your issue at hand, this is caused by the fact that there is indeed no filter split in Jinja, see the list there: https://jinja.palletsprojects.com/en/2.11.x/templates/#list-of-builtin-filters.
The reason why there is no such a filter is simple: split() is a function of the Python String, and since Jinja is Python, you can just use it as is.
Also mind that, since regex_findall is meant for multiple matches, you'll have to select the first element of the list, for example, with the filter first.
So your message ends up being:
msg: >-
{{
(
show_bgp_sessions.data
| regex_findall('\\d+\\.\\d+\\.\\d+\\.\\d+\\s\\s.*')
| first
).split()
}}
Given the playbook:
- hosts: all
gather_facts: no
vars:
show_bgp_sessions:
data: |
hostname#show bgp vrf vrfname summary | i 1.1
BGP Route Distinguisher: 1.1.1.1:0
BGP router identifier 1.1.1.1, local AS number 2222
1.1.1.3 0 64512 349608 316062 896772 0 0 2w4d 1
tasks:
- debug:
msg: >-
{{
(
show_bgp_sessions.data
| regex_findall('\\d+\\.\\d+\\.\\d+\\.\\d+\\s\\s.*')
| first
).split()
}}
Gives the recap:
TASK [debug] ***************************************************************
ok: [localhost] => {
"msg": [
"1.1.1.3",
"0",
"64512",
"349608",
"316062",
"896772",
"0",
"0",
"2w4d",
"1"
]
}