install_comnetsemu.yml

#
# About: Install ComNetsEmu and ALL dependencies using Ansible
#

---
- name: Install ComNetsEmu
  hosts: all
  gather_facts: true

  vars:
    # The directory where comnetsemu's source code is located.
    # Use relative path
    TOP_DIR: "../../../"

  tasks:

  - name: Create directories
    file:
      path: "{{ item }}"
      state: directory
    with_items: 
    - "{{ TOP_DIR }}/comnetsemu_dependencies"

  - name: Find deprecated/unused directories and files created by the older ComNetsEmu installer
    find:
      paths: "{{ TOP_DIR }}/comnetsemu_dependencies"
      # Old ComNetsEmu installer fetch some source code dependencies manually and append the versions
      # as suffix... They should be removed and use Ansible's way to do it.
      patterns:
        - "docker-*"
        - "mininet-*"
        - "ryu-*"
      file_type: directory
    register: directories_to_remove

  - name: Delete deprecated/unused directories and files created by the older ComNetsEmu installer
    file:
      path: "{{ item.path }}"
      state: absent
    with_items: "{{ directories_to_remove.files }}"

  - name: Update apt-get repo and cache
    become: true
    apt: update_cache=yes force_apt_get=yes cache_valid_time=3600

  - name: Clone Mininet repo
    git:
      repo: https://github.com/mininet/mininet
      dest: "{{ TOP_DIR }}/comnetsemu_dependencies/mininet"
      # Unreleased version 2.3.1b1
      # This version is needed because it replace all git URLs to https!
      version: aa0176fce6fb718a03474f8719261b07b670d30d
      force: yes

  # Patch source code directly, instead of using runtime monkey patching
  - name: Patch Mininet source code
    patch:
      src: "{{ TOP_DIR }}/comnetsemu/patch/mininet/util.py.patch"
      dest: "{{ TOP_DIR }}/comnetsemu_dependencies/mininet/mininet/util.py"

  - name: Remove installed openflow directory to force re-install
    file:
      path: "{{ TOP_DIR }}/comnetsemu_dependencies/openflow"
      state: absent

  - name: Install Mininet and its minimal dependencies
    shell: PYTHON=python3 ./install.sh -nfvw
    args:
      chdir: "{{ TOP_DIR }}/comnetsemu_dependencies/mininet/util"

  - name: Install all deb packages required by ComNetsEmu from the official Ubuntu repo
    become: true
    apt:
      name:
        - docker.io
        - linux-headers-{{ ansible_kernel }}
        - python3-docker
        - python3-libtmux
        - python3-pip
        - python3-pyroute2
        - python3-requests
        - python3-ryu
        - rt-tests
        - stress-ng
        - tmux
        - wireguard
      state: latest

  - name: Install the ComNetsEmu Python package 
    become: true
    shell: pip3 install .
    args:
      chdir: "{{ TOP_DIR }}/comnetsemu"

  - name: Build all test containers for ComNetsEmu (required for unit tests and some built-in examples)
    become: true
    shell: python3 ./build.py
    args:
      chdir: "{{ TOP_DIR }}/comnetsemu/test_containers"

  # You can comment out tasks related to install development packages if you don't want to modify or extend
  # the source code of ComNetsEmu and build the HTML documentation locally.
  - name: Install packages required for the development of ComNetsEmu
    become: true
    apt:
      name:
        - black
        - pylint
        - python3-coverage
        - python3-flake8
        - python3-ipdb
        - python3-pytest
        - shellcheck
      state: latest

  # TODO: Install P4 related dependencies

  # TODO: Install a high-performance data plane solutions e.g. VPP or OVS-DPDK

  - name: Install packages required to build HTML documentation of ComNetsEmu
    become: true
    # Pip must be used here since many required packages are not currently in Ubuntu's repo.
    shell: pip3 install -r ./requirements.txt
    args:
      chdir: "{{ TOP_DIR }}/comnetsemu/doc"

  - name: Start and enable the Docker service
    become: true
    systemd:
      name: docker
      state: started
      enabled: yes