data-model-compare.yml

---
- name: Building configuration from data model
  hosts: all
  connection: local
  gather_facts: false
  tags: ['build', 'validate']
  vars:
      config_dir: "configs"
      build_dir: "compiled"
  pre_tasks:
      - name: Set global facts, cleanup old files and directories
        set_fact:
            host_dir: "{{ config_dir }}/{{ build_dir }}/{{ inventory_hostname }}"
        changed_when: false
        check_mode: true
      - name: Clearing old build configuration files
        file: path={{ host_dir }} state=absent
        changed_when: false
        check_mode: false
      - name: Rebuild build configuration directories
        file: path={{ host_dir }} state=directory
        changed_when: false
        check_mode: false

- name: Building configuration components
  hosts: all
  connection: local
  tags: ['build', 'validate']
  vars:
      model_dir: "datamodel"
  vars_files:
      - "{{ model_dir }}/node-model.yml"
  roles:
      - base
      - common
      - interfaces
      - routing

  post_tasks:
      - name: Assembling configuration components
        tags: ['build', 'validate']
        assemble:
            src: "{{ host_dir }}"
            dest: "{{ host_dir }}/assembled.conf"
        changed_when: false
      - name: Compare data model with config on device, report the differences
        tags: ['validate']
        napalm_install_config:
            hostname: "{{ inventory_hostname }}"
            username: "{{ username }}"
            password: "{{ password }}"
            dev_os: "{{ os }}"
            config_file: "{{ host_dir }}/assembled.conf"
            replace_config: false
            get_diffs: true
            commit_changes: false
            diff_file: "{{ host_dir }}/config-diff"