---
# To run this play: ansible-playbook playbooks/snapshot-rootnode.yml -l node_standalone
- name: Initialize cross play variables
  hosts: node_standalone
  vars:
    - job_wait_to_end: true
    - job_abort: false
    # Set to false when taking the first snapshot of a new rootnode
    - revert_before: true
    - snapshot_name: 'base-configuration'
    - wait_for_changes: true
  tasks:
    - ansible.builtin.set_fact:
        job_wait_to_end: "{{job_wait_to_end}}"
        job_abort: "{{job_abort}}"
        revert_before: "{{revert_before}}"
        snapshot_name: "{{snapshot_name}}"
        target_rootnode: "{{inventory_hostname}}"
        wait_for_changes: "{{wait_for_changes}}"

- name: Shutdown and revert
  hosts: node_standalone
  tasks:
    - name: "Find {{target_rootnode}}'s host"
      ansible.builtin.command:
        argv: "{{command_args|list}}"
      register: get_hypervisor
      vars:
        command_args:
          - '../scripts/manage_jenkins_node.py'
          - 'get_hypervisor'
          - "{{target_rootnode}}"
      delegate_to: localhost
    - ansible.builtin.set_fact:
        rootnode_host: "{{get_hypervisor.stdout|trim}}"
    - name: Disable {{target_rootnode}} in Jenkins
      ansible.builtin.command:
        argv: "{{command_args | reject('equalto', '') | list}}"
      vars:
        command_args:
          - '../scripts/manage_jenkins_node.py'
          - 'disable'
          - '--wait'
          - "{{ 0 if job_wait_to_end else -1}}"
          - "{{target_rootnode}}"
          - "{{'--force-abort' if job_abort else ''}}"
          - '--reason'
          - 'Ansible play: snapshot rootnode'
      delegate_to: localhost
    - name: Revert target rootnode
      when: revert_before
      ansible.builtin.command:
        argv: ['virsh', 'snapshot-revert', "{{target_rootnode}}", '--snapshotname', "{{snapshot_name}}", '--running']
      delegate_to: "{{rootnode_host}}"
    - name: Wait for target rootnode to come back online
      local_action: wait_for host={{ target_rootnode }}
                    port=22
                    delay=1
                    timeout=300
                    state=started

# If the playbook isn't run with `-l node_standalone` or `-l ci-rootnode...`, then
# this play errors out trying to find variables for the ci-hosts even if the condition
# `inventory_hostname in groups.node_standalone` is false.
- name: Run site.yml
  import_playbook: '../site.yml'
  when: inventory_hostname in groups.node_standalone

- name: Cleanup and snapshot
  hosts: node_standalone
  tasks:
    - ansible.builtin.debug:
        msg: "Example playbook command: `ansible-playbook site.yml -l {{target_rootnode}}`"
      when: wait_for_changes
      delegate_to: localhost
    - ansible.builtin.pause:
        prompt: "Run any playbooks or make other changes against {{target_rootnode}} then hit enter when ready to continue (Ctrl-C to abort)"
      when: wait_for_changes
      delegate_to: localhost
    - name: Remove the jenkins workspace
      ansible.builtin.file:
        path: "{{item}}"
        state: absent
      with_items:
        - /root/workspace
        - /home/jenkins/workspace
    - name: Stop the VM
      ansible.builtin.command:
        argv: ['virsh', 'destroy', "{{target_rootnode}}"]
      delegate_to: "{{rootnode_host}}"
    - name: Check for existing base snapshot
      ansible.builtin.shell:
        cmd: "virsh snapshot-list '{{target_rootnode}}' --name | grep -E '^{{snapshot_name}}$'"
      ignore_errors: true
      register: existing_snapshot
      delegate_to: "{{rootnode_host}}"
    - name: Remove existing base snapshot
      when: existing_snapshot.rc == 0
      ansible.builtin.command:
        argv: ['virsh', 'snapshot-delete', '--snapshotname', "{{snapshot_name}}", "{{target_rootnode}}"]
      delegate_to: "{{rootnode_host}}"
    - name: Snapshot
      ansible.builtin.command:
        argv: ['virsh', 'snapshot-create-as', '--name', "{{snapshot_name}}", "{{target_rootnode}}"]
      delegate_to: "{{rootnode_host}}"
    - name: Start the vm
      ansible.builtin.command:
        argv: ['virsh', 'start', "{{target_rootnode}}"]
      delegate_to: "{{rootnode_host}}"
    - name: Enable {{target_rootnode}} in Jenkins
      ansible.builtin.command:
        argv: "{{command_args | list}}"
      vars:
        command_args:
          - '../scripts/manage_jenkins_node.py'
          - 'enable'
          - "{{target_rootnode}}"
      delegate_to: localhost