Ansible > file compare with stat module: Need to check file has the same value or not

Question

There is a file: test.txt on remote1 and remote2 which has version with date and these file contains are n't fixed.

$ cat test.txt
Release_P1.11_2017-08-02-094316
02/08/2017

I need to check:

1. if file contains are same, then move on further tasks.
2. if file contains are not same, then stop the tasks.

   ---
   - name: latest file check
     stat:
        path: /tmp/test.txt
        get_checksum: yes
     register: test_file_check

   - debug:
        var: test_file_check.stat.checksum

Now if file contains are same, checksum value are equal otherwise it doesn't have same. but I don't figure out the solution.

Answer 1

All you need is second time check and when condition

- hosts: remote_1
  tasks:
    - name: first file check
      stat:
        path: /tmp/test.txt
        get_checksum: yes
      register: test_file_check_1

...........................................
- hosts: remote_2
  tasks: 
    - name: next check
      stat:
        path: /tmp/test.txt
        get_checksum: yes
      register: test_file_check_2
...........................................

- name: Block run only if file has no changes
  command: /bin/true
  when: test_file_check_1.stat.checksum == test_file_check_2.stat.checksum

http://docs.ansible.com/ansible/latest/playbooks_conditionals.html