---
#  USAGE:
#  sudo ansible-playbook qemu_cloud_start.yml
#  you can use --limit regexp to start just two clouds, for example:
#  sudo ansible-playbook qemu_cloud_start.yml -l *cloud[AB]*

- name: create bridges for qemu nodes

  hosts: all
  connection: local
  gather_facts: no
  serial: 1

  tasks:
    - name: create bridges
      linux_bridge:
        state: present
        bridge: "{{ item }}"
      loop:
       - "{{ eth0 }}"
       - "{{ eth2 | default() }}"
      when: item != ""

- name: start qemu nodes

  hosts: all
  connection: local
  gather_facts: no

  vars:
    node_id: "{{ '%02d' | format(groups['all'].index(inventory_hostname)) }}"
    lm_ifname: lm_{{ cloud }}_{{ inventory_hostname_short }}
    rootfs_url: http://repo.libremesh.org/tmp/openwrt-18.06-x86-64-generic-rootfs.tar.gz
    ramfs_url: http://repo.libremesh.org/tmp/openwrt-18.06-x86-64-ramfs.bzImage
    rootfs: files/generic-rootfs.tar.gz
    ramfs: files/ramfs.bzImage

  tasks:
    - name: download rootfs if not found locally
      tags: download
      run_once: yes
      get_url:
        url: "{{ rootfs_url }}"
        dest: "{{ rootfs }}"

    - name: download ramfs if not found locally
      tags: download
      run_once: yes
      get_url:
        url: "{{ ramfs_url }}"
        dest: "{{ ramfs }}"

    - name: create taps
      linux_tuntap:
        state: present
        name: "{{ item }}"
        mode: tap
      loop:
       - "{{ lm_ifname }}_0"
       - "{{ lm_ifname }}_2"

    - name: add eth0 taps to bridges
      linux_bridge_port:
        state: present
        bridge: "{{ eth0 }}"
        port: "{{ lm_ifname }}_0"

    - name: add eth2 taps to bridges
      linux_bridge_port:
        state: present
        bridge: "{{ eth2 | default() }}"
        port: "{{ lm_ifname }}_2"
      when: eth2 | default() != ""

    - name: deploy template
      template:
        dest: "/tmp/lime_node_{{ node_id }}"
        src: lime-node

    - name: run qemu
      shell: (../qemu_dev_start --node-id {{ node_id }} --eth0 {{ lm_ifname }}_0 --eth2 {{ lm_ifname }}_2 {{ rootfs }} {{ ramfs }} &)

    - name: set_fact
      set_fact:
        linklocal: "fe80::5000:ff:feab:c0{{ node_id }}%lm_cloud{{cloud}}"

- name: useful info for doing clusterssh
  hosts: all
  connection: local
  gather_facts: no

  tasks:
    - set_fact:
        linklocals: "{{ linklocals | default([]) | union([ hostvars[item].linklocal | default() ]) }}"
      loop: "{{ groups['all'] }}"
      run_once: yes

    - name: info
      run_once: yes
      pause:
        seconds: 5
        prompt: |
          ===================================
          now to manage the cloud you can do:

          clusterssh {{ linklocals | join(' ') }}

          ===================================