CODEWITHSUNDEEP
regexansible
nixmind
nixmind

Reputation: 2266

Ansible extract substring from multiline string containing url

I'm trying to extract a substring from a multine string with Ansible regex without success.

I have this ouput from an excuted command (teleport users add):

"stdout": "Signup token has been created and is valid for 3600 seconds. Share this URL with the user:\nhttps://main-proxy:3080/web/newuser/d32ed2bc0ebb0084a381123e3eff0bfa\n\nNOTE: make sure 'main-proxy' is accessible!"

I would like to extract juste the token. Here: d32ed2bc0ebb0084a381123e3eff0bfa.

I registered the output in a result variable, and I'm trying to extract the token without success:

- set_fact:
    signup_token: '{{ result.stdout | regex_replace("^(?s)^https:\/\/.*\/(.+).*?$", "\\1") }}'
- debug: msg={{ signup_token }}

What's the right regex and syntax?

Upvotes: 1

Views: 10498

Answers (2)

nixmind
nixmind

Reputation: 2266

The regex (?s).*https://.*/([^\r\n]+).* works right as I expected.

And also yes I could have tried getting the last 32 characters from the second line of standard output but I prefere to be agnostique from token lenght if it changes, so a regex to extract the token id from output is the right way for my case now.

Upvotes: 0

Konstantin Suvorov
Konstantin Suvorov

Reputation: 68339

Why do you use so complex regular expression? Take 32 chars of [0-9a-f] after /.

- set_fact:
    signup_token: "{{ mystr | regex_search(qry) }}"
  vars:
    qry: '(?<=\/)[a-f0-9]{32}'

Use sites like https://regex101.com/ to test your expressions.

Upvotes: 1

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