ansible/roles/application/tasks/install.yml

---
- name: Helm init and upgrade
  command: |
     {{ helm_bin_dir }}/helm init
     --upgrade
     --skip-refresh
  changed_when: true  # init is always changed type of action

# A correct way to implement this would be using --wait option in helm init invocation.
# However, it does not work due to https://github.com/helm/helm/issues/4031 (fixed in newer helm release)
- name: "Wait for helm upgrade to finish"
  command: "{{ helm_bin_dir }}/helm version --tiller-connection-timeout 10"
  register: result
  until: result.rc == 0
  delay: 10
  retries: 12
  changed_when: false  # for idempotency

- name: Get all helm repos
  command: "{{ helm_bin_dir }}/helm repo list"
  register: repos
  changed_when: false  # for idempotency

- name: Remove stable repo
  command: "{{ helm_bin_dir }}/helm repo remove stable"
  changed_when: true  # when executed its a changed type of action
  when: "'stable' in repos.stdout"

- name: Helm Serve
  shell: "{{ helm_bin_dir }}/helm serve &"
  async: 45
  poll: 3  # wait 3sec to get a chance for some stderr
  register: helm_serve
  changed_when: "'address already in use' not in helm_serve.stderr"

- name: List helm repos
  command: "{{ helm_bin_dir }}/helm repo list"
  register: helm_repo_list
  changed_when: false  # for idempotency
  failed_when:
    - helm_repo_list.rc > 0
    - "'Error: no repositories to show' not in helm_repo_list.stderr"

- name: Helm Add Repo
  command: "{{ helm_bin_dir }}/helm repo add {{ helm_repository_name | mandatory }} {{ helm_repository_url | mandatory }}"
  when: "'local' not in helm_repo_list.stdout"
  changed_when: true  # when executed its a changed type of action

- name: Build local helm repository
  make:
    chdir: "{{ app_helm_charts_infra_directory }}"
    target: "{{ item }}"
  loop: "{{ app_helm_build_targets }}"
  environment:
    PATH: "{{ helm_bin_dir }}:{{ ansible_env.PATH }}"

- name: Generate Helm application override file with custom role
  include_role:
    name: "{{ app_helm_override_role }}"
  when: not app_skip_helm_override

# The generated override file is added to override list unless skipped.
- name: Add application helm override file to list of overrides unless skipped
  set_fact:
    helm_override_files: "{{ (helm_override_files | default([])) + [app_helm_override_file] }}"
  when: not app_skip_helm_override

- name: Print final list of override files
  debug:
    var: helm_override_files

- name: Check for deploy plugin presence
  stat:
    path: '{{ helm_home_dir.stdout }}/plugins/deploy/deploy.sh'
  register: deploy_plugin_presence

- name: "Helm Install application {{ app_name }}"
  command: >
          {{ helm_bin_dir }}/helm
          {{ 'deploy' if deploy_plugin_presence.stat.exists else 'install --name' }}
          {{ app_helm_release_name }}
          {{ helm_repository_name }}/{{ app_helm_chart_name }}
          --namespace {{ app_kubernetes_namespace }}
          {% for arg in helm_override_files %} {{ '-f ' + arg }} {% endfor %}
          {% for arg in helm_extra_install_options %} {{ arg.opt }} {% endfor %}
  changed_when: true  # when executed its a changed type of action
  register: helm_install
  failed_when: helm_install.stderr