project.yml

---
# http://dokku.viewdocs.io/dokku/application-deployment/
- name: Setup Project
  hosts: dokku
  vars:
    projects:
      - {name: python-getting-started, url: "https://github.com/heroku/python-getting-started.git", dbname: 'appdb', env: [key=value, foo=bar]}
      - {name: ruby-rails-sample, url: "https://github.com/heroku/ruby-rails-sample.git", dbname: 'mydb', env: [key=value, foo=bar]}
    databases:
      - {engine: 'postgres', name: 'appdb'}
      - {engine: 'mariadb', name: 'mydb'}

  tasks:
    - name: Get current directory
      local_action: shell pwd
      register: current_dir

    - name: Checkout project to apps directory
      local_action: git repo={{ item.url }} dest={{ current_dir.stdout }}/apps/{{ item.name }} accept_hostkey=True
      with_items: "{{ projects }}"

    - name: Create Dokku project
      shell: dokku apps:create {{ item.name }}
      become: yes
      become_user: dokku
      with_items: "{{ projects }}"
      ignore_errors: yes

    - name: Create Databases for project
      shell: dokku {{ item.engine }}:create {{ item.name }}
      become: yes
      become_user: dokku
      with_items: "{{ databases }}"
      ignore_errors: yes

    - name: Add ENV variables into project
      shell: dokku config:set {{ item.name }} {{ " ".join(item.env) }}
      become: yes
      become_user: dokku
      with_items: "{{ projects }}"

    - name: Add Dokku as remote repository
      local_action: command chdir={{ current_dir.stdout }}/apps/{{ item.name }} git remote add {{ git_remote_name }} dokku@{{ inventory_hostname }}:{{ item.name }}
      with_items: "{{ projects }}"
      ignore_errors: yes

    - name: Link Database with project
      shell: dokku {{ item[0].engine }}:link {{ item[1].dbname }} {{ item[1].name }}
      when: item[0].name == item[1].dbname
      become: yes
      become_user: dokku
      with_nested:
        - "{{ databases }}"
        - "{{ projects }}"
      ignore_errors: yes

    - name: Push project to Dokku
      local_action: command chdir={{ current_dir.stdout }}/apps/{{ item.name }} git push {{ git_remote_name }} master
      with_items: "{{ projects }}"